{"id":1987,"date":"2026-04-17T22:19:45","date_gmt":"2026-04-17T14:19:45","guid":{"rendered":"http:\/\/www.preluna.xyz\/?p=1987"},"modified":"2026-04-18T17:27:46","modified_gmt":"2026-04-18T09:27:46","slug":"%e8%b7%af%e7%94%b1%e7%ae%97%e6%b3%95%e4%b8%8e%e8%b7%af%e7%94%b1%e5%8d%8f%e8%ae%ae","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2026\/04\/17\/%e8%b7%af%e7%94%b1%e7%ae%97%e6%b3%95%e4%b8%8e%e8%b7%af%e7%94%b1%e5%8d%8f%e8%ae%ae\/preluna\/text\/","title":{"rendered":"\u8def\u7531\u7b97\u6cd5\u4e0e\u8def\u7531\u534f\u8bae"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/22-768x1024.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/22-768x1024.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1988\"  sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c22\u9898\uff1a\u8ddd\u79bb\u5411\u91cf\u7b97\u6cd5\u66f4\u65b0<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u7b2c 22 \u9898\u9009 <strong>B<\/strong>\u3002<\/p>\n\n\n\n<p>C \u5230\u6240\u6709\u7ed3\u70b9\u7684\u6700\u77ed\u8def\u5f84\u5411\u91cf\u4e3a\uff1a<\/p>\n\n\n\n<p><code>(11, 6, 0, 3, 5, 8)<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u8003\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u8fd9\u9898\u8003\u7684\u662f<strong>\u8ddd\u79bb\u5411\u91cf\u8def\u7531\u7b97\u6cd5<\/strong>\uff0c\u672c\u8d28\u5c31\u662f Bellman-Ford \u601d\u60f3\u5728\u8def\u7531\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n<p>\u9898\u76ee\u91cc\u8bf4\u201c\u4e0b\u9762\u7684\u5411\u91cf\u521a\u521a\u5230\u8fbe\u8def\u7531\u5668 C\u201d\uff0c\u8fd9\u91cc\u7684\u201c\u5411\u91cf\u201d\u6307\u7684\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u90bb\u5c45\u8def\u7531\u5668\u5f53\u524d\u8ba4\u4e3a\u81ea\u5df1\u5230\u5404\u4e2a\u76ee\u7684\u7ed3\u70b9\u7684\u8ddd\u79bb\u5217\u8868\u3002<\/strong><\/p>\n\n\n\n<p>\u6bd4\u5982\u6765\u81ea B \u7684\u5411\u91cf <code>(5, 0, 8, 12, 6, 2)<\/code>\uff0c\u5982\u679c\u6309\u7ed3\u70b9\u987a\u5e8f <code>A, B, C, D, E, F<\/code> \u6765\u770b\uff0c\u5c31\u8868\u793a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>B \u5230 A \u7684\u8ddd\u79bb\u662f 5<\/li>\n\n\n\n<li>B \u5230 B \u7684\u8ddd\u79bb\u662f 0<\/li>\n\n\n\n<li>B \u5230 C \u7684\u8ddd\u79bb\u662f 8<\/li>\n\n\n\n<li>B \u5230 D \u7684\u8ddd\u79bb\u662f 12<\/li>\n\n\n\n<li>B \u5230 E \u7684\u8ddd\u79bb\u662f 6<\/li>\n\n\n\n<li>B \u5230 F \u7684\u8ddd\u79bb\u662f 2<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\uff0c\u8fd9\u9053\u9898\u4e0d\u662f\u8ba9\u76f4\u63a5\u770b\u56fe\u627e\u6700\u77ed\u8def\uff0c\u800c\u662f\u8ba9\u6839\u636e\u90bb\u5c45\u53d1\u6765\u7684\u8ddd\u79bb\u5411\u91cf\uff0c\u66f4\u65b0 C \u81ea\u5df1\u7684\u8def\u7531\u8868\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u524d\u7f6e\u77e5\u8bc6\uff1a\u8ddd\u79bb\u5411\u91cf\u7b97\u6cd5\u600e\u4e48\u66f4\u65b0<\/h3>\n\n\n\n<p>\u5982\u679c\u5f53\u524d\u8def\u7531\u5668\u662f C\uff0c\u90a3\u4e48\u5b83\u5230\u67d0\u4e2a\u76ee\u7684\u7ed3\u70b9 X \u7684\u8ddd\u79bb\u5e94\u6309\u4e0b\u9762\u516c\u5f0f\u66f4\u65b0\uff1a<\/p>\n\n\n\n<p><code>D_C(X) = min{ C\u2192B + D_B(X), C\u2192D + D_D(X), C\u2192E + D_E(X) }<\/code><\/p>\n\n\n\n<p>\u610f\u601d\u5f88\u7b80\u5355\uff1a<\/p>\n\n\n\n<p>C \u4e0d\u77e5\u9053\u5168\u7f51\u6700\u77ed\u8def\uff0c\u4f46\u5b83\u53ef\u4ee5\u53bb\u95ee\u90bb\u5c45\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f60\u5230\u76ee\u6807\u591a\u8fdc\uff1f<\/li>\n\n\n\n<li>\u6211\u518d\u52a0\u4e0a\u6211\u5230\u4f60\u7684\u4ee3\u4ef7<\/li>\n\n\n\n<li>\u6700\u540e\u53d6\u6700\u5c0f<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u5e72\u5df2\u77e5\u6761\u4ef6<\/h3>\n\n\n\n<p>\u6765\u81ea B \u7684\u5411\u91cf\uff1a<\/p>\n\n\n\n<p><code>(5, 0, 8, 12, 6, 2)<\/code><\/p>\n\n\n\n<p>\u6765\u81ea D \u7684\u5411\u91cf\uff1a<\/p>\n\n\n\n<p><code>(16, 12, 6, 0, 9, 10)<\/code><\/p>\n\n\n\n<p>\u6765\u81ea E \u7684\u5411\u91cf\uff1a<\/p>\n\n\n\n<p><code>(7, 6, 3, 9, 0, 4)<\/code><\/p>\n\n\n\n<p>\u6d4b\u5f97\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C \u5230 B \u7684\u5ef6\u8fdf\u4e3a 6<\/li>\n\n\n\n<li>C \u5230 D \u7684\u5ef6\u8fdf\u4e3a 3<\/li>\n\n\n\n<li>C \u5230 E \u7684\u5ef6\u8fdf\u4e3a 5<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5206\u6b65\u8ba1\u7b97<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. C \u5230 A<\/h4>\n\n\n\n<p>\u7ecf B\uff1a<code>6 + 5 = 11<\/code><br>\u7ecf D\uff1a<code>3 + 16 = 19<\/code><br>\u7ecf E\uff1a<code>5 + 7 = 12<\/code><\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\uff0c\u5f97\uff1a<\/p>\n\n\n\n<p><code>C \u5230 A = 11<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">2. C \u5230 B<\/h4>\n\n\n\n<p>\u7ecf B\uff1a<code>6 + 0 = 6<\/code><br>\u7ecf D\uff1a<code>3 + 12 = 15<\/code><br>\u7ecf E\uff1a<code>5 + 6 = 11<\/code><\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\uff0c\u5f97\uff1a<\/p>\n\n\n\n<p><code>C \u5230 B = 6<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">3. C \u5230 C<\/h4>\n\n\n\n<p>\u5230\u81ea\u5df1\u4e00\u5b9a\u662f\uff1a<\/p>\n\n\n\n<p><code>C \u5230 C = 0<\/code><\/p>\n\n\n\n<p>\u8fd9\u4e00\u6b65\u975e\u5e38\u91cd\u8981\u3002<br>\u4e0d\u80fd\u673a\u68b0\u5730\u6309\u90bb\u5c45\u5411\u91cf\u53bb\u5957\u516c\u5f0f\uff0c\u5426\u5219\u4f1a\u7b97\u51fa\u4e00\u4e2a\u7ed5\u8def\u56de\u81ea\u5df1\u7684\u503c\uff0c\u4f46\u8def\u7531\u5668\u5230\u81ea\u5df1\u7684\u8ddd\u79bb\u5fc5\u987b\u5199 0\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">4. C \u5230 D<\/h4>\n\n\n\n<p>\u7ecf B\uff1a<code>6 + 12 = 18<\/code><br>\u7ecf D\uff1a<code>3 + 0 = 3<\/code><br>\u7ecf E\uff1a<code>5 + 9 = 14<\/code><\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\uff0c\u5f97\uff1a<\/p>\n\n\n\n<p><code>C \u5230 D = 3<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">5. C \u5230 E<\/h4>\n\n\n\n<p>\u7ecf B\uff1a<code>6 + 6 = 12<\/code><br>\u7ecf D\uff1a<code>3 + 9 = 12<\/code><br>\u7ecf E\uff1a<code>5 + 0 = 5<\/code><\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\uff0c\u5f97\uff1a<\/p>\n\n\n\n<p><code>C \u5230 E = 5<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">6. C \u5230 F<\/h4>\n\n\n\n<p>\u7ecf B\uff1a<code>6 + 2 = 8<\/code><br>\u7ecf D\uff1a<code>3 + 10 = 13<\/code><br>\u7ecf E\uff1a<code>5 + 4 = 9<\/code><\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\uff0c\u5f97\uff1a<\/p>\n\n\n\n<p><code>C \u5230 F = 8<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u7ec8\u7ed3\u679c<\/h3>\n\n\n\n<p>\u6240\u4ee5 C \u7684\u6700\u77ed\u8def\u5f84\u5411\u91cf\u4e3a\uff1a<\/p>\n\n\n\n<p><code>(11, 6, 0, 3, 5, 8)<\/code><\/p>\n\n\n\n<p>\u5bf9\u5e94\u9009\u9879 <strong>B<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u7c7b\u9898\u4e3a\u4ec0\u4e48\u5bb9\u6613\u9519<\/h3>\n\n\n\n<p>\u8fd9\u9898\u5e38\u89c1\u9519\u8bef\u6709 3 \u4e2a\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c<strong>\u770b\u9519\u5411\u91cf\u987a\u5e8f<\/strong>\u3002<br>\u9898\u91cc\u9ed8\u8ba4\u987a\u5e8f\u4e00\u822c\u5c31\u662f\u56fe\u4e2d\u7ed3\u70b9\u987a\u5e8f\uff0c\u5fc5\u987b\u5148\u5bf9\u4e0a\u6bcf\u4e00\u4f4d\u5bf9\u5e94\u54ea\u4e2a\u7ed3\u70b9\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\uff0c<strong>\u628a\u5230\u81ea\u5df1\u7684\u8ddd\u79bb\u4e5f\u62ff\u53bb\u5957\u516c\u5f0f<\/strong>\u3002<br>\u5230\u81ea\u5df1\u5fc5\u987b\u662f 0\uff0c\u8fd9\u662f\u8def\u7531\u8868\u57fa\u672c\u89c4\u5219\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\uff0c<strong>\u628a\u5b83\u5f53\u6210\u7eaf\u56fe\u8bba\u6700\u77ed\u8def\u9898\u53bb\u505a<\/strong>\u3002<br>\u8fd9\u9898\u8003\u7684\u4e0d\u662f\u201c\u624b\u52a8\u753b\u6240\u6709\u8def\u5f84\u201d\uff0c\u800c\u662f\u201c\u8ddd\u79bb\u5411\u91cf\u5982\u4f55\u66f4\u65b0\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u540c\u7c7b\u9898\u5feb\u901f\u8bc6\u522b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u53ea\u8981\u9898\u76ee\u51fa\u73b0\u4e0b\u9762\u8fd9\u4e9b\u8868\u8ff0\uff0c\u5c31\u8981\u9a6c\u4e0a\u60f3\u5230\u8ddd\u79bb\u5411\u91cf\u66f4\u65b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u67d0\u8def\u7531\u5668\u521a\u6536\u5230\u6765\u81ea\u90bb\u5c45\u7684\u8ddd\u79bb\u5411\u91cf<\/li>\n\n\n\n<li>\u5df2\u77e5\u5230\u5404\u90bb\u5c45\u7684\u94fe\u8def\u4ee3\u4ef7<\/li>\n\n\n\n<li>\u6c42\u8be5\u8def\u7531\u5668\u5230\u5404\u7ed3\u70b9\u7684\u6700\u77ed\u8def\u5f84\u5411\u91cf<\/li>\n<\/ul>\n\n\n\n<p>\u505a\u6cd5\u56fa\u5b9a\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u9010\u5217\u66f4\u65b0 = \u5230\u90bb\u5c45\u4ee3\u4ef7 + \u90bb\u5c45\u5230\u76ee\u6807\u8ddd\u79bb\uff0c\u6700\u540e\u53d6\u6700\u5c0f\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c23\u9898\uff1aOSPF \u9009\u8def + \u5206\u7ec4\u4ea4\u6362\u65f6\u5ef6\u8ba1\u7b97<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u7b2c 23 \u9898\u9009 <strong>C<\/strong>\u3002<\/p>\n\n\n\n<p>\u4ece A \u5f00\u59cb\u53d1\u9001\u5230 B \u63a5\u6536\u5b8c\u6bd5\uff0c\u6240\u9700\u65f6\u95f4\u4e3a\uff1a<\/p>\n\n\n\n<p><code>80.32 ms<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u8003\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u8fd9\u9898\u662f\u5178\u578b\u7684<strong>\u8de8\u77e5\u8bc6\u70b9\u7efc\u5408\u9898<\/strong>\uff0c\u540c\u65f6\u8003\u4e86\u4e24\u90e8\u5206\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u90e8\u5206\uff0c<strong>OSPF \u5982\u4f55\u9009\u8def<\/strong><br>\u7b2c\u4e8c\u90e8\u5206\uff0c<strong>\u5206\u7ec4\u4ea4\u6362\u4e2d\u5b58\u50a8\u8f6c\u53d1\u7684\u603b\u65f6\u5ef6\u8ba1\u7b97<\/strong><\/p>\n\n\n\n<p>\u8fd9\u7c7b\u9898\u770b\u8d77\u6765\u4fe1\u606f\u591a\uff0c\u5b9e\u9645\u4e0a\u8981\u5206\u4e24\u6b65\u505a\uff0c\u4e0d\u80fd\u6df7\u5728\u4e00\u8d77\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u7528 OSPF \u9009\u6700\u77ed\u8def\u5f84<\/h3>\n\n\n\n<p>\u56fe\u4e2d\u4e24\u6761\u4e3b\u8981\u8def\u5f84\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e0a\u8def<\/h4>\n\n\n\n<p>A \u2192 \u5de6\u4e0a\u8def\u7531\u5668 \u2192 \u53f3\u4e0a\u8def\u7531\u5668 \u2192 B<\/p>\n\n\n\n<p>\u603b\u4ee3\u4ef7\uff1a<\/p>\n\n\n\n<p><code>2 + 6 + 2 = 10<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e0b\u8def<\/h4>\n\n\n\n<p>A \u2192 \u5de6\u4e0a\u8def\u7531\u5668 \u2192 \u5de6\u4e0b\u8def\u7531\u5668 \u2192 \u53f3\u4e0b\u8def\u7531\u5668 \u2192 \u53f3\u4e0a\u8def\u7531\u5668 \u2192 B<\/p>\n\n\n\n<p>\u603b\u4ee3\u4ef7\uff1a<\/p>\n\n\n\n<p><code>2 + 3 + 1 + 1 + 2 = 9<\/code><\/p>\n\n\n\n<p>OSPF \u9009\u7684\u662f<strong>\u603b\u4ee3\u4ef7\u6700\u5c0f\u8def\u5f84<\/strong>\uff0c\u4e0d\u662f\u8df3\u6570\u6700\u5c11\uff0c\u4e5f\u4e0d\u662f\u753b\u8d77\u6765\u66f4\u76f4\u7684\u90a3\u6761\u8def\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u5e94\u8be5\u8d70\u4e0b\u8def\uff0c\u603b\u5171\u7ecf\u8fc7 <strong>5 \u6bb5\u94fe\u8def<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u7b97\u4e00\u5171\u5206\u6210\u591a\u5c11\u4e2a\u5206\u7ec4<\/h3>\n\n\n\n<p>\u9898\u76ee\u7ed9\u51fa\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6587\u4ef6\u5927\u5c0f\uff1a<code>980000 B<\/code><\/li>\n\n\n\n<li>\u5206\u7ec4\u957f\u5ea6\uff1a<code>1000 B<\/code><\/li>\n\n\n\n<li>\u9996\u90e8\u957f\u5ea6\uff1a<code>20 B<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u6bcf\u4e2a\u5206\u7ec4\u771f\u6b63\u627f\u8f7d\u7684\u6570\u636e\u662f\uff1a<\/p>\n\n\n\n<p><code>1000 - 20 = 980 B<\/code><\/p>\n\n\n\n<p>\u4e8e\u662f\u5206\u7ec4\u6570\u4e3a\uff1a<\/p>\n\n\n\n<p><code>980000 \/ 980 = 1000<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u4e00\u5171\u53d1\u9001 <strong>1000 \u4e2a\u5206\u7ec4<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff1a\u7b97\u6bcf\u4e2a\u5206\u7ec4\u5728\u4e00\u6bb5\u94fe\u8def\u4e0a\u7684\u53d1\u9001\u65f6\u5ef6<\/h3>\n\n\n\n<p>\u5e26\u5bbd\u662f\uff1a<\/p>\n\n\n\n<p><code>100 Mb\/s<\/code><\/p>\n\n\n\n<p>\u6bcf\u4e2a\u5206\u7ec4\u957f\u5ea6\u662f\uff1a<\/p>\n\n\n\n<p><code>1000 B = 8000 bit<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u4e00\u4e2a\u5206\u7ec4\u5728\u4e00\u6bb5\u94fe\u8def\u4e0a\u7684\u53d1\u9001\u65f6\u5ef6\u4e3a\uff1a<\/p>\n\n\n\n<p><code>8000 \/ (100 \u00d7 10^6) s = 0.00008 s = 0.08 ms<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u56db\u6b65\uff1a\u6309\u5b58\u50a8\u8f6c\u53d1\u8ba1\u7b97\u603b\u65f6\u95f4<\/h3>\n\n\n\n<p>\u5728\u5b58\u50a8\u8f6c\u53d1\u5206\u7ec4\u4ea4\u6362\u4e2d\uff0c\u5982\u679c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5206\u7ec4\u6570\u4e3a <code>n<\/code><\/li>\n\n\n\n<li>\u94fe\u8def\u6bb5\u6570\u4e3a <code>h<\/code><\/li>\n\n\n\n<li>\u5355\u4e2a\u5206\u7ec4\u5355\u94fe\u8def\u53d1\u9001\u65f6\u5ef6\u4e3a <code>t<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u5219\u603b\u65f6\u95f4\u4e3a\uff1a<\/p>\n\n\n\n<p><code>(n + h - 1) \u00d7 t<\/code><\/p>\n\n\n\n<p>\u8fd9\u91cc\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>n = 1000<\/code><\/li>\n\n\n\n<li><code>h = 5<\/code><\/li>\n\n\n\n<li><code>t = 0.08 ms<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u603b\u65f6\u95f4\u4e3a\uff1a<\/p>\n\n\n\n<p><code>(1000 + 5 - 1) \u00d7 0.08 = 1004 \u00d7 0.08 = 80.32 ms<\/code><\/p>\n\n\n\n<p>\u56e0\u6b64\u9009 <strong>C<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u4e3a\u4ec0\u4e48\u5bb9\u6613\u9519<\/h3>\n\n\n\n<p>\u4e3b\u8981\u6709 4 \u4e2a\u5751\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. OSPF \u9009\u8def\u770b\u603b\u4ee3\u4ef7\uff0c\u4e0d\u770b\u8df3\u6570<\/h4>\n\n\n\n<p>\u5f88\u591a\u4eba\u4f1a\u89c9\u5f97\u4e0a\u8def\u66f4\u77ed\uff0c\u5176\u5b9e OSPF \u770b\u7684\u662f\u6743\u503c\u548c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. 1000B \u4e0d\u662f\u6709\u6548\u6570\u636e\u957f\u5ea6<\/h4>\n\n\n\n<p>\u9898\u76ee\u5df2\u7ecf\u8bf4\u660e 20B \u662f\u9996\u90e8\uff0c\u6240\u4ee5\u6709\u6548\u8f7d\u8377\u53ea\u6709 980B\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u5ffd\u7565\u4e86\u7aef\u4e3b\u673a\u5230\u8def\u7531\u5668\u3001\u8def\u7531\u5668\u5230\u7aef\u4e3b\u673a\u7684\u94fe\u8def<\/h4>\n\n\n\n<p>\u9898\u76ee\u95ee\u7684\u662f\u4ece A \u53d1\u5230 B \u6536\u5b8c\uff0c\u6574\u4e2a\u7aef\u5230\u7aef\u8def\u5f84\u90fd\u8981\u7b97\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. \u4e0d\u4f1a\u7528\u6d41\u6c34\u7ebf\u516c\u5f0f<\/h4>\n\n\n\n<p>\u5982\u679c\u628a\u603b\u65f6\u95f4\u5199\u6210\uff1a<\/p>\n\n\n\n<p><code>1000 \u00d7 5 \u00d7 0.08ms<\/code><\/p>\n\n\n\n<p>\u5c31\u9519\u4e86\u3002<br>\u56e0\u4e3a\u5206\u7ec4\u4ea4\u6362\u662f\u53ef\u4ee5\u6d41\u6c34\u4f20\u8f93\u7684\uff0c\u5e94\u8be5\u7528\uff1a<\/p>\n\n\n\n<p><code>(n + h - 1) \u00d7 t<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u540c\u7c7b\u9898\u5feb\u901f\u8bc6\u522b\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u770b\u5230\u4e0b\u9762\u8fd9\u79cd\u8868\u8ff0\uff0c\u5c31\u77e5\u9053\u662f\u4e24\u6bb5\u5f0f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5404\u8def\u7531\u5668\u4f7f\u7528 OSPF\uff0c\u94fe\u8def\u5ea6\u91cf\u5df2\u77e5<\/li>\n\n\n\n<li>\u5206\u7ec4\u957f\u5ea6\u3001\u9996\u90e8\u957f\u5ea6\u3001\u5e26\u5bbd\u5df2\u77e5<\/li>\n\n\n\n<li>\u6c42\u6587\u4ef6\u4f20\u8f93\u603b\u65f6\u95f4<\/li>\n<\/ul>\n\n\n\n<p>\u56fa\u5b9a\u505a\u6cd5\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u5148\u9009\u8def\uff0c\u518d\u7b97\u5206\u7ec4\u6570\uff0c\u518d\u7b97\u5355\u5206\u7ec4\u53d1\u9001\u65f6\u5ef6\uff0c\u6700\u540e\u5957 <code>(n + h - 1) \u00d7 t<\/code>\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c24\u9898\uff1aRIP \u4e2d 16 \u7684\u542b\u4e49<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u7b2c 24 \u9898\u9009 <strong>D<\/strong>\u3002<\/p>\n\n\n\n<p>R1 \u4e0d\u80fd\u7ecf R2 \u5230\u8fbe Net1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u8003\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u8fd9\u9898\u8003\u7684\u662f RIP \u6700\u57fa\u7840\u3001\u4e5f\u6700\u91cd\u8981\u7684\u4e00\u6761\u534f\u8bae\u89c4\u5219\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RIP \u4ee5<strong>\u8df3\u6570<\/strong>\u4f5c\u4e3a\u8ddd\u79bb<\/li>\n\n\n\n<li>\u6700\u5927\u6709\u6548\u8ddd\u79bb\u662f <strong>15<\/strong><\/li>\n\n\n\n<li><strong>16 \u8868\u793a\u4e0d\u53ef\u8fbe<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u5f53 R1 \u6536\u5230\u90bb\u5c45 R2 \u53d1\u6765\u7684\u8ddd\u79bb\u5411\u91cf\u4e2d\u542b\u6709 <code>&lt;Net1, 16&gt;<\/code> \u65f6\uff0c\u8868\u793a\uff1a<\/p>\n\n\n\n<p><strong>R2 \u544a\u8bc9 R1\uff1a\u5b83\u5230 Net1 \u4e0d\u53ef\u8fbe\u3002<\/strong><\/p>\n\n\n\n<p>\u4e8e\u662f R1 \u53ef\u4ee5\u5f97\u51fa\u7ed3\u8bba\uff1a<\/p>\n\n\n\n<p><strong>R1 \u4e0d\u80fd\u7ecf\u8fc7 R2 \u5230\u8fbe Net1\u3002<\/strong><\/p>\n\n\n\n<p>\u6240\u4ee5\u9009 <strong>D<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u522b\u7684\u9009\u9879\u9519<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">A \u9519<\/h4>\n\n\n\n<p>\u201cR2 \u53ef\u4ee5\u7ecf\u8fc7 R1 \u5230\u8fbe Net1\uff0c\u8df3\u6570\u4e3a 17\u201d<br>\u9519\u5728 RIP \u4e2d 16 \u5df2\u7ecf\u8868\u793a\u65e0\u7a77\u5927\uff0c\u4e0d\u5b58\u5728\u6709\u6548\u7684 17 \u8df3\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">B \u9519<\/h4>\n\n\n\n<p>\u201cR2 \u53ef\u4ee5\u5230\u8fbe Net1\uff0c\u8df3\u6570\u4e3a 16\u201d<br>\u9519\u5728 16 \u4e0d\u662f\u53ef\u8fbe\uff0c\u800c\u662f\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">C \u9519<\/h4>\n\n\n\n<p>\u201cR1 \u53ef\u4ee5\u7ecf\u8fc7 R2 \u5230\u8fbe Net1\uff0c\u8df3\u6570\u4e3a 17\u201d<br>\u540c\u6837\u9519\u5728 17 \u6ca1\u6709\u5b9e\u9645\u610f\u4e49\uff0c\u800c\u4e14 <code>&lt;Net1,16&gt;<\/code> \u6070\u6070\u8bf4\u660e\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u7684\u6838\u5fc3\u8bb0\u5fc6\u70b9<\/h3>\n\n\n\n<p>\u8fd9\u9898\u5176\u5b9e\u5c31\u662f\u4e00\u53e5\u8bdd\uff1a<\/p>\n\n\n\n<p><strong>RIP \u4e2d 16 \u4e0d\u662f\u201c\u5f88\u8fdc\u201d\uff0c\u800c\u662f\u201c\u5230\u4e0d\u4e86\u201d\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u53e5\u8bdd\u4e00\u5b9a\u8981\u6b7b\u8bb0\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5bb9\u6613\u9519\u5728\u54ea\u91cc<\/h3>\n\n\n\n<p>\u6700\u5e38\u89c1\u9519\u8bef\u5c31\u662f\u628a 16 \u5f53\u6210\u666e\u901a\u6570\u5b57\u770b\u5f85\uff0c\u8bef\u4ee5\u4e3a\u8fd8\u80fd\u518d\u52a0 1 \u53d8\u6210 17\u3002<br>\u4f46 RIP \u91cc 16 \u5df2\u7ecf\u662f\u201c\u65e0\u7a77\u5927\u201d\u7684\u534f\u8bae\u8bed\u4e49\uff0c\u4e0d\u662f\u6b63\u5e38\u8df3\u6570\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c25\u9898\uff1aRIP \u7684\u201c\u574f\u6d88\u606f\u4f20\u5f97\u6162\u201d\u548c\u8ba1\u6570\u5230\u65e0\u7a77<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u7b2c 25 \u9898\u9009 <strong>B<\/strong>\u3002<\/p>\n\n\n\n<p>R2 \u66f4\u65b0\u540e\uff0c\u5230\u7f51\u7edc <code>201.1.2.0\/25<\/code> \u7684\u8ddd\u79bb\u662f\uff1a<\/p>\n\n\n\n<p><code>3<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u8bf4\u660e\u4e00\u4e0b\u8fd9\u9898\u4e3a\u4ec0\u4e48\u7279\u522b\u5bb9\u6613\u9519<\/h3>\n\n\n\n<p>\u8fd9\u9898\u4e0d\u80fd\u6309\u201cR3 \u53d1\u73b0\u4e0d\u53ef\u8fbe\uff0c\u4e8e\u662f\u7acb\u523b\u5bf9\u5916\u901a\u544a 16\uff0c\u56e0\u6b64 R2 \u66f4\u65b0\u6210 16\u201d\u90a3\u79cd\u6700\u76f4\u89c2\u601d\u8def\u53bb\u505a\u3002<br>\u5982\u679c\u8fd9\u6837\u505a\uff0c\u4f1a\u6389\u8fdb\u9677\u9631\u3002<\/p>\n\n\n\n<p>\u8fd9\u9053\u9898\u7684\u6807\u51c6\u8003\u6cd5\u662f\u5728\u8003 RIP \u7684\u7ecf\u5178\u7f3a\u9677\uff1a<\/p>\n\n\n\n<p><strong>\u574f\u6d88\u606f\u4f20\u5f97\u6162<\/strong><br><strong>\u8ba1\u6570\u5230\u65e0\u7a77<\/strong><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u867d\u7136\u7f51\u7edc\u5b9e\u9645\u4e0a\u5df2\u7ecf\u574f\u4e86\uff0c\u4f46\u7531\u4e8e\u5176\u4ed6\u8def\u7531\u5668\u624b\u91cc\u8fd8\u4fdd\u7559\u7740\u65e7\u7684\u9519\u8bef\u53ef\u8fbe\u4fe1\u606f\uff0cRIP \u4f1a\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u4e0d\u65ad\u9519\u8bef\u66f4\u65b0\uff0c\u8ddd\u79bb\u4ece 2 \u53d8 3\u3001\u518d\u53d8 4\u3001\u518d\u53d8 5\u2026\u2026\u6700\u540e\u624d\u6da8\u5230 16\u3002<\/p>\n\n\n\n<p>\u8fd9\u9898\u95ee\u7684\u6b63\u662f<strong>\u7b2c\u4e00\u6b21\u66f4\u65b0\u540e\u7684\u7ed3\u679c<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u8003\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u8fd9\u9898\u8003\u7684\u662f RIP \u7684\u52a8\u6001\u66f4\u65b0\u8fc7\u7a0b\uff0c\u800c\u4e0d\u662f\u53ea\u8003\u201c16 \u8868\u793a\u4e0d\u53ef\u8fbe\u201d\u8fd9\u4e2a\u9759\u6001\u5b9a\u4e49\u3002<\/p>\n\n\n\n<p>\u5fc5\u987b\u628a\u7b2c24\u9898\u548c\u7b2c25\u9898\u533a\u5206\u5f00\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c24\u9898\u8003\uff1a<code>16<\/code> \u7684\u8bed\u4e49\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u7b2c25\u9898\u8003\uff1a\u53d1\u751f\u6545\u969c\u540e\uff0cRIP \u4e3a\u4ec0\u4e48\u8fd8\u4f1a\u6682\u65f6\u7b97\u51fa\u4e00\u4e2a\u8f83\u5c0f\u7684\u9519\u8bef\u8ddd\u79bb<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6545\u969c\u524d\u7684\u6536\u655b\u72b6\u6001<\/h3>\n\n\n\n<p>\u76ee\u6807\u7f51\u7edc <code>201.1.2.0\/25<\/code> \u662f\u76f4\u63a5\u6302\u5728 R3 \u4e0a\u7684\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u5728\u6545\u969c\u524d\u3001\u5168\u7f51\u5df2\u7ecf\u6536\u655b\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R3 \u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u4e3a <code>1<\/code><\/li>\n\n\n\n<li>R1 \u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u4e3a <code>2<\/code><\/li>\n\n\n\n<li>R2 \u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u4e3a <code>2<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e00\u6b65\u8981\u5148\u5efa\u7acb\u8d77\u6765\uff0c\u5426\u5219\u540e\u9762\u6ca1\u6cd5\u63a8\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6545\u969c\u53d1\u751f\u540e\uff0cR3 \u4e3a\u4ec0\u4e48\u4f1a\u7b97\u51fa 3<\/h3>\n\n\n\n<p>\u73b0\u5728 R3 \u68c0\u6d4b\u5230 <code>201.1.2.0\/25<\/code> \u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u53ea\u770b\u5b83\u81ea\u5df1\u7684\u76f4\u8fde\u72b6\u6001\uff0c\u5b83\u5f53\u7136\u5e94\u8be5\u8ba4\u4e3a\u76f4\u8fde\u8fd9\u6761\u8def\u574f\u4e86\u3002<br>\u4f46 RIP \u4e0d\u662f\u53ea\u770b\u672c\u5730\u94fe\u8def\uff0c\u5b83\u4f1a\u6839\u636e\u4fdd\u5b58\u7684\u90bb\u5c45\u8ddd\u79bb\u5411\u91cf\u91cd\u65b0\u8ba1\u7b97\u6700\u77ed\u8def\u3002<\/p>\n\n\n\n<p>\u8fd9\u65f6\uff0cR1 \u548c R2 \u8fd8\u6ca1\u6709\u6765\u5f97\u53ca\u77e5\u9053\u6545\u969c\uff0c\u5b83\u4eec\u4ecd\u4fdd\u7559\u65e7\u4fe1\u606f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R1 \u8fd8\u8ba4\u4e3a\u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u662f <code>2<\/code><\/li>\n\n\n\n<li>R2 \u8fd8\u8ba4\u4e3a\u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u662f <code>2<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u4e8e\u662f R3 \u91cd\u65b0\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<p><code>min{16, 2+1, 2+1} = min{16, 3, 3} = 3<\/code><\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684 16 \u8868\u793a\u201c\u672c\u6765\u76f4\u8fde\u5df2\u574f\uff0c\u6309\u672c\u5730\u770b\u662f\u4e0d\u53ef\u8fbe\u201d\uff1b<br>\u4f46\u7531\u4e8e\u90bb\u5c45\u8fd8\u5728\u8bf4\u201c\u6211\u80fd\u5230\u201d\uff0cR3 \u53cd\u800c\u8bef\u4ee5\u4e3a\u53ef\u4ee5\u901a\u8fc7\u90bb\u5c45\u7ed5\u5230\u76ee\u6807\u7f51\u7edc\uff0c\u4e8e\u662f\u628a\u81ea\u5df1\u7684\u8ddd\u79bb\u66f4\u65b0\u6210\u4e86 <code>3<\/code>\u3002<\/p>\n\n\n\n<p>\u8fd9\u5c31\u662f RIP \u7684\u5178\u578b\u9519\u8bef\u73b0\u8c61\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">R2 \u4e3a\u4ec0\u4e48\u66f4\u65b0\u540e\u4e5f\u662f 3<\/h3>\n\n\n\n<p>R3 \u628a\u201c\u6211\u5230\u8be5\u7f51\u7edc\u8ddd\u79bb\u4e3a 3\u201d\u7684\u65b0\u5411\u91cf\u901a\u544a\u7ed9\u90bb\u5c45\u540e\uff0cR2 \u518d\u91cd\u65b0\u8ba1\u7b97\u3002<\/p>\n\n\n\n<p>\u6b64\u65f6 R2 \u4fdd\u5b58\u7740\u7684\u90bb\u5c45\u4fe1\u606f\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R1 \u5230\u8be5\u7f51\u7edc\u8ddd\u79bb\u4ecd\u4e3a <code>2<\/code><\/li>\n\n\n\n<li>R3 \u5230\u8be5\u7f51\u7edc\u8ddd\u79bb\u53d8\u6210\u4e86 <code>3<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5 R2 \u91cd\u65b0\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<p><code>min{2+1, 3+1} = min{3, 4} = 3<\/code><\/p>\n\n\n\n<p>\u4e8e\u662f R2 \u66f4\u65b0\u540e\uff0c\u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u5c31\u53d8\u6210\u4e86 <code>3<\/code>\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u7b54\u6848\u662f <strong>B<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u7684\u672c\u8d28\u662f\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u8fd9\u9898\u672c\u8d28\u4e0a\u662f\u5728\u8003\uff1a<\/p>\n\n\n\n<p><strong>\u8ddd\u79bb\u5411\u91cf\u7b97\u6cd5\u5728\u6545\u969c\u65f6\u53ef\u80fd\u88ab\u65e7\u4fe1\u606f\u8bef\u5bfc\u3002<\/strong><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u8def\u7531\u5668\u5e76\u4e0d\u77e5\u9053\u90bb\u5c45\u6240\u8c13\u7684\u201c\u53ef\u8fbe\u201d\u662f\u4e0d\u662f\u5176\u5b9e\u8981\u7ed5\u56de\u81ea\u5df1\uff0c\u5b83\u53ea\u4f1a\u673a\u68b0\u5730\u6bd4\u8f83\u6570\u503c\u5927\u5c0f\u3002<br>\u4e8e\u662f\u5c31\u4f1a\u51fa\u73b0\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R3 \u4ee5\u4e3a\u53ef\u4ee5\u7ecf R1 \u6216 R2 \u5230\u76ee\u6807\u7f51\u7edc<\/li>\n\n\n\n<li>R1\u3001R2 \u53c8\u53ef\u80fd\u7ee7\u7eed\u4ee5\u4e3a\u53ef\u4ee5\u901a\u8fc7\u522b\u7684\u8def\u7531\u5668\u5230\u76ee\u6807\u7f51\u7edc<\/li>\n\n\n\n<li>\u8ddd\u79bb\u4e0d\u65ad\u589e\u52a0\uff1a3\u30014\u30015\u2026\u2026\u76f4\u5230 16<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u5c31\u53eb<strong>\u8ba1\u6570\u5230\u65e0\u7a77<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8fd9\u9898\u4e0d\u80fd\u76f4\u63a5\u5199 16<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u9898\u76ee\u95ee\u7684\u662f\uff1a<\/p>\n\n\n\n<p><strong>R3 \u5411 R2 \u901a\u544a\u4e00\u6b21\u65b0\u7684\u8ddd\u79bb\u5411\u91cf\u540e\uff0cR2 \u66f4\u65b0\u540e\u662f\u591a\u5c11\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u8bf4\u660e\u5b83\u8003\u7684\u662f\u7b2c\u4e00\u6b21\u6545\u969c\u4f20\u64ad\u540e RIP \u7684\u91cd\u65b0\u8ba1\u7b97\u7ed3\u679c\uff0c\u4e0d\u662f\u95ee\u201c\u6700\u7ec8\u5f7b\u5e95\u6536\u655b\u540e\u662f\u591a\u5c11\u201d\u3002<\/p>\n\n\n\n<p>\u5728\u7b2c\u4e00\u6b21\u66f4\u65b0\u65f6\uff0c\u7531\u4e8e\u65e7\u5411\u91cf\u8fd8\u5728\uff0cR2 \u6682\u65f6\u7b97\u51fa\u6765\u7684\u662f 3\uff0c\u800c\u4e0d\u662f 16\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u7c7b\u9898\u7684\u5178\u578b\u9677\u9631<\/h3>\n\n\n\n<p>\u8fd9\u9898\u5e38\u89c1\u8bef\u533a\u6709\u4e24\u4e2a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u628a RIP \u5f53\u4f5c\u201c\u6536\u5230\u574f\u6d88\u606f\u7acb\u523b\u5168\u7f51\u540c\u6b65\u201d<\/h4>\n\n\n\n<p>\u8fd9\u662f\u9519\u8bef\u7684\u3002<br>RIP \u7684\u7f3a\u9677\u6070\u6070\u5c31\u662f\u574f\u6d88\u606f\u4f20\u64ad\u6162\uff0c\u4e0d\u4f1a\u7acb\u523b\u5168\u7f51\u4e00\u81f4\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u628a\u7b2c24\u9898\u7684\u601d\u8def\u7167\u642c\u5230\u7b2c25\u9898<\/h4>\n\n\n\n<p>\u7b2c24\u9898\u662f\u9759\u6001\u8bed\u4e49\u9898\u3002<br>\u7b2c25\u9898\u662f\u52a8\u6001\u66f4\u65b0\u9898\u3002<br>\u4e24\u8005\u4e0d\u80fd\u6df7\u7528\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">22\uff5e25\u9898\u7684\u77e5\u8bc6\u4e3b\u7ebf\u603b\u7ed3<\/h2>\n\n\n\n<p>\u8fd9\u56db\u9898\u5176\u5b9e\u521a\u597d\u6784\u6210\u4e86\u4e00\u6761\u5b8c\u6574\u4e3b\u7ebf\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c22\u9898<\/h3>\n\n\n\n<p>\u8003<strong>\u8ddd\u79bb\u5411\u91cf\u7b97\u6cd5\u6b63\u5e38\u60c5\u51b5\u4e0b\u5982\u4f55\u66f4\u65b0<\/strong><\/p>\n\n\n\n<p>\u6838\u5fc3\u662f\uff1a<\/p>\n\n\n\n<p><code>\u5230\u90bb\u5c45\u7684\u4ee3\u4ef7 + \u90bb\u5c45\u5230\u76ee\u6807\u7684\u8ddd\u79bb\uff0c\u518d\u53d6\u6700\u5c0f<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c23\u9898<\/h3>\n\n\n\n<p>\u8003<strong>OSPF \u5982\u4f55\u9009\u8def<\/strong>\uff0c\u4ee5\u53ca<strong>\u5206\u7ec4\u4ea4\u6362\u603b\u65f6\u5ef6\u5982\u4f55\u8ba1\u7b97<\/strong><\/p>\n\n\n\n<p>\u6838\u5fc3\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>OSPF \u6bd4\u7684\u662f\u94fe\u8def\u4ee3\u4ef7\u548c<\/li>\n\n\n\n<li>\u5b58\u50a8\u8f6c\u53d1\u603b\u65f6\u5ef6\u7528 <code>(n + h - 1) \u00d7 t<\/code><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c24\u9898<\/h3>\n\n\n\n<p>\u8003<strong>RIP \u4e2d 16 \u7684\u534f\u8bae\u8bed\u4e49<\/strong><\/p>\n\n\n\n<p>\u6838\u5fc3\u662f\uff1a<\/p>\n\n\n\n<p><code>16 = \u4e0d\u53ef\u8fbe<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c25\u9898<\/h3>\n\n\n\n<p>\u8003<strong>RIP \u7684\u7f3a\u9677\uff1a\u574f\u6d88\u606f\u4f20\u5f97\u6162\u3001\u8ba1\u6570\u5230\u65e0\u7a77<\/strong><\/p>\n\n\n\n<p>\u6838\u5fc3\u662f\uff1a<\/p>\n\n\n\n<p>\u867d\u7136\u7f51\u7edc\u574f\u4e86\uff0c\u4f46\u90bb\u5c45\u8fd8\u4fdd\u7559\u65e7\u4fe1\u606f\uff0c\u6240\u4ee5\u77ed\u65f6\u95f4\u5185\u4f1a\u9519\u8bef\u66f4\u65b0\u6210 3\u30014\u30015\u2026\u2026\uff0c\u800c\u4e0d\u662f\u7acb\u523b\u53d8\u6210 16\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8865\u5145\u8bf4\u660e\uff1a\u7b2c25\u9898\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u201c\u7b54\u6848\u662f 3\u201d\u8fd9\u79cd\u7279\u6b8a\u60c5\u51b5<\/h2>\n\n\n\n<p>\u7b2c25\u9898\u6700\u7279\u6b8a\u7684\u5730\u65b9\uff0c\u4e0d\u5728\u4e8e\u7b97\u672f\uff0c\u800c\u5728\u4e8e\u5b83\u8003\u7684\u4e0d\u662f\u201c\u6b63\u5e38 RIP \u66f4\u65b0\u201d\uff0c\u800c\u662f <strong>RIP \u5728\u6545\u969c\u573a\u666f\u4e0b\u7684\u5f02\u5e38\u6536\u655b\u73b0\u8c61<\/strong>\u3002<\/p>\n\n\n\n<p>\u5e73\u65f6\u4e00\u770b\u5230\u201c\u67d0\u7f51\u7edc\u4e0d\u53ef\u8fbe\u201d\uff0c\u7b2c\u4e00\u53cd\u5e94\u5f80\u5f80\u662f\uff1a<\/p>\n\n\n\n<p><code>16 = \u4e0d\u53ef\u8fbe<\/code><\/p>\n\n\n\n<p>\u4e8e\u662f\u5f88\u5bb9\u6613\u76f4\u63a5\u628a\u7b54\u6848\u5199\u6210 16\u3002<br>\u4f46\u8fd9\u9053\u9898\u7684\u6807\u51c6\u7b54\u6848\u662f 3\uff0c\u539f\u56e0\u5c31\u5728\u4e8e\u5b83\u8003\u7684\u662f\u4e00\u4e2a\u5f88\u5178\u578b\u7684\u8865\u5145\u77e5\u8bc6\u70b9\uff1a<\/p>\n\n\n\n<p><strong>\u8ba1\u6570\u5230\u65e0\u7a77\uff08count to infinity\uff09<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9053\u9898\u4e3a\u4ec0\u4e48\u5c5e\u4e8e\u201c\u7279\u6b8a\u60c5\u51b5\u201d<\/h2>\n\n\n\n<p>\u5982\u679c\u6309\u6700\u6734\u7d20\u7684\u7406\u89e3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R3 \u76f4\u8fde\u7f51\u7edc <code>201.1.2.0\/25<\/code><\/li>\n\n\n\n<li>\u73b0\u5728 R3 \u53d1\u73b0\u8fd9\u4e2a\u7f51\u7edc\u574f\u4e86<\/li>\n\n\n\n<li>\u90a3\u4e48 R3 \u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u5c31\u5e94\u8be5\u53d8\u6210 16<\/li>\n\n\n\n<li>R2 \u518d\u6536\u5230\u8fd9\u4e2a 16\uff0c\u4e5f\u5c31\u8be5\u628a\u81ea\u5df1\u7684\u8ddd\u79bb\u6539\u6210 16<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u79cd\u7406\u89e3\u672c\u8eab\u4e0d\u7b97\u9519\uff0c\u4f46\u5b83\u5bf9\u5e94\u7684\u662f\u4e00\u79cd\u201c\u7406\u60f3\u5316\u7684\u3001\u6ca1\u6709\u65e7\u9519\u8bef\u4fe1\u606f\u5e72\u6270\u201d\u7684\u601d\u8def\u3002<\/p>\n\n\n\n<p>\u800c\u7b2c25\u9898\u8003\u7684\u6070\u6070\u4e0d\u662f\u8fd9\u4e2a\u7406\u60f3\u8fc7\u7a0b\u3002<br>\u5b83\u8003\u7684\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u5728 RIP \u4e2d\uff0c\u90bb\u5c45\u624b\u91cc\u8fd8\u4fdd\u7559\u7740\u65e7\u7684\u53ef\u8fbe\u4fe1\u606f\u65f6\uff0c\u574f\u6d88\u606f\u4e0d\u4f1a\u7acb\u523b\u4f20\u904d\u5168\u7f51\uff0c\u53cd\u800c\u4f1a\u8bf1\u53d1\u9519\u8bef\u66f4\u65b0\u3002<\/strong><\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u9898\u662f\u4e00\u4e2a\u6545\u969c\u4f20\u64ad\u7684\u7279\u6b8a\u573a\u666f\u9898\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u4e2a\u7279\u6b8a\u60c5\u51b5\u7684\u672c\u8d28\uff1aR3 \u88ab\u65e7\u4fe1\u606f\u9a97\u4e86<\/h2>\n\n\n\n<p>\u6545\u969c\u53d1\u751f\u524d\uff0c\u8def\u7531\u5df2\u7ecf\u6536\u655b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R3 \u5230\u76ee\u6807\u7f51\u7edc\u8ddd\u79bb\u4e3a 1<\/li>\n\n\n\n<li>R1 \u5230\u76ee\u6807\u7f51\u7edc\u8ddd\u79bb\u4e3a 2<\/li>\n\n\n\n<li>R2 \u5230\u76ee\u6807\u7f51\u7edc\u8ddd\u79bb\u4e3a 2<\/li>\n<\/ul>\n\n\n\n<p>\u73b0\u5728\u76ee\u6807\u7f51\u7edc\u4ece R3 \u8fd9\u8fb9\u65ad\u6389\u4e86\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u53ea\u770b R3 \u81ea\u5df1\u7684\u76f4\u8fde\u60c5\u51b5\uff0c\u90a3\u4e48\u786e\u5b9e\u5e94\u8be5\u8ba4\u4e3a\uff1a<\/p>\n\n\n\n<p><code>R3 \u5230\u8be5\u7f51\u7edc = 16<\/code><\/p>\n\n\n\n<p>\u4f46\u662f RIP \u4e0d\u53ea\u770b\u201c\u6211\u76f4\u8fde\u662f\u4e0d\u662f\u574f\u4e86\u201d\uff0c<br>\u5b83\u8fd8\u4f1a\u770b\u90bb\u5c45\u4e4b\u524d\u53d1\u7ed9\u81ea\u5df1\u7684\u8ddd\u79bb\u5411\u91cf\u3002<\/p>\n\n\n\n<p>\u800c\u6b64\u65f6 R1\u3001R2 \u8fd8\u6ca1\u6709\u610f\u8bc6\u5230\u7f51\u7edc\u5df2\u7ecf\u574f\u4e86\uff0c\u5b83\u4eec\u4ecd\u7136\u4fdd\u7559\u7740\u65e7\u503c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R1 \u8fd8\u8ba4\u4e3a\u8ddd\u79bb\u662f 2<\/li>\n\n\n\n<li>R2 \u8fd8\u8ba4\u4e3a\u8ddd\u79bb\u662f 2<\/li>\n<\/ul>\n\n\n\n<p>\u4e8e\u662f R3 \u5c31\u4f1a\u91cd\u65b0\u8ba1\u7b97\uff1a<\/p>\n\n\n\n<p><code>min(16, 2+1, 2+1) = 3<\/code><\/p>\n\n\n\n<p>\u8fd9\u4e00\u6b65\u5c31\u662f\u8fd9\u9053\u9898\u6700\u7279\u522b\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff1a<\/p>\n\n\n\n<p><strong>R3 \u660e\u660e\u662f\u6700\u5148\u53d1\u73b0\u6545\u969c\u7684\u90a3\u4e2a\u8def\u7531\u5668\uff0c\u5374\u56e0\u4e3a\u90bb\u5c45\u624b\u91cc\u8fd8\u62ff\u7740\u65e7\u8def\u7531\uff0c\u53cd\u800c\u8bef\u4ee5\u4e3a\u201c\u4e5f\u8bb8\u8fd8\u53ef\u4ee5\u7ed5\u7ecf\u90bb\u5c45\u5230\u8fbe\u76ee\u6807\u7f51\u7edc\u201d\u3002<\/strong><\/p>\n\n\n\n<p>\u4e8e\u662f\u5b83\u5bf9\u5916\u901a\u544a\u7684\u8ddd\u79bb\uff0c\u5c31\u4e0d\u662f 16\uff0c\u800c\u662f 3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48 R2 \u6700\u540e\u4e5f\u4f1a\u5f97\u5230 3<\/h2>\n\n\n\n<p>R2 \u6536\u5230 R3 \u53d1\u6765\u7684\u66f4\u65b0\u540e\uff0c\u770b\u5230\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R1 \u8fd8\u8bf4\u5230\u8be5\u7f51\u7edc\u8ddd\u79bb\u4e3a 2<\/li>\n\n\n\n<li>R3 \u73b0\u5728\u8bf4\u5230\u8be5\u7f51\u7edc\u8ddd\u79bb\u4e3a 3<\/li>\n<\/ul>\n\n\n\n<p>\u4e8e\u662f R2 \u518d\u91cd\u7b97\uff1a<\/p>\n\n\n\n<p><code>min(2+1, 3+1) = 3<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5 R2 \u66f4\u65b0\u540e\uff0c\u5230\u8be5\u7f51\u7edc\u7684\u8ddd\u79bb\u4e5f\u4f1a\u53d8\u6210 3\u3002<\/p>\n\n\n\n<p>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u7b2c25\u9898\u9009 3\uff0c\u800c\u4e0d\u662f 16\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u7c7b\u73b0\u8c61\u53eb\u4ec0\u4e48<\/h2>\n\n\n\n<p>\u8fd9\u7c7b\u73b0\u8c61\u5c31\u53eb\uff1a<\/p>\n\n\n\n<p><strong>\u574f\u6d88\u606f\u4f20\u5f97\u6162<\/strong><\/p>\n\n\n\n<p>\u8fdb\u4e00\u6b65\u8bf4\uff0c\u5b83\u5bf9\u5e94\u7684\u7ecf\u5178\u73b0\u8c61\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u8ba1\u6570\u5230\u65e0\u7a77<\/strong><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u539f\u6765\u5e94\u8be5\u5c3d\u5feb\u53d8\u6210\u201c\u4e0d\u53ef\u8fbe\u201d\u7684\u8def\u7531\uff0c\u4e0d\u4f1a\u4e00\u4e0b\u5b50\u8df3\u5230 16\uff0c<br>\u800c\u662f\u53ef\u80fd\u7ecf\u5386\uff1a<\/p>\n\n\n\n<p><code>3 \u2192 4 \u2192 5 \u2192 \u2026\u2026 \u2192 16<\/code><\/p>\n\n\n\n<p>\u6700\u540e\u624d\u771f\u6b63\u6536\u655b\u4e3a\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u9898\u7684\u201c3\u201d\u4e0d\u662f\u6700\u7ec8\u7a33\u5b9a\u7ed3\u679c\uff0c\u800c\u662f\u6545\u969c\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u4e00\u4e2a\u4e2d\u95f4\u7ed3\u679c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u8bf4\u5b83\u662f\u201c\u8865\u5145\u77e5\u8bc6\u201d\uff0c\u800c\u4e0d\u662f\u666e\u901a\u57fa\u7840\u9898<\/h2>\n\n\n\n<p>\u56e0\u4e3a\u666e\u901a\u57fa\u7840\u9898\u901a\u5e38\u53ea\u8003\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RIP \u7684\u5ea6\u91cf\u662f\u8df3\u6570<\/li>\n\n\n\n<li>16 \u8868\u793a\u4e0d\u53ef\u8fbe<\/li>\n\n\n\n<li>\u6536\u5230 <code>&lt;Net,16&gt;<\/code> \u5c31\u7406\u89e3\u4e3a\u201c\u5230\u4e0d\u4e86\u201d<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u7c7b\u9898\u662f\u9759\u6001\u5b9a\u4e49\u9898\u3002<\/p>\n\n\n\n<p>\u800c\u7b2c25\u9898\u5f80\u524d\u8d70\u4e86\u4e00\u6b65\uff0c\u5b83\u5728\u8003\uff1a<\/p>\n\n\n\n<p><strong>\u5f53\u7f51\u7edc\u521a\u51fa\u6545\u969c\uff0c\u800c\u5404\u8def\u7531\u5668\u7684\u8ddd\u79bb\u5411\u91cf\u8fd8\u6ca1\u6765\u5f97\u53ca\u540c\u6b65\u66f4\u65b0\u65f6\uff0c\u4f1a\u53d1\u751f\u4ec0\u4e48\u3002<\/strong><\/p>\n\n\n\n<p>\u6240\u4ee5\u5b83\u5df2\u7ecf\u4e0d\u662f\u5355\u7eaf\u8bb0\u5fc6\u5b9a\u4e49\u4e86\uff0c\u800c\u662f\u5728\u8003 RIP \u7684\u7f3a\u9677\u4e0e\u6536\u655b\u8fc7\u7a0b\u3002<\/p>\n\n\n\n<p>\u4ece\u590d\u4e60\u89d2\u5ea6\u770b\uff0c\u8fd9\u7c7b\u9898\u5c5e\u4e8e\u201c\u7406\u89e3\u578b\u8865\u5145\u8003\u70b9\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c25\u9898\u4e3a\u4ec0\u4e48\u7279\u522b\u5bb9\u6613\u8bef\u5224<\/h2>\n\n\n\n<p>\u56e0\u4e3a\u5b83\u6b63\u597d\u5361\u5728\u4e24\u4e2a\u77e5\u8bc6\u70b9\u4e4b\u95f4\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u9762\uff0c\u8111\u5b50\u91cc\u7262\u7262\u8bb0\u7740\uff1a<\/p>\n\n\n\n<p><code>16 = \u4e0d\u53ef\u8fbe<\/code><\/p>\n\n\n\n<p>\u53e6\u4e00\u65b9\u9762\uff0c\u9898\u76ee\u53c8\u5728\u8003\uff1a<\/p>\n\n\n\n<p>\u201c\u660e\u660e\u5df2\u7ecf\u4e0d\u53ef\u8fbe\u4e86\uff0c\u4e3a\u4ec0\u4e48\u8def\u7531\u5668\u8fd8\u4f1a\u6682\u65f6\u7b97\u51fa\u4e00\u4e2a 3\uff1f\u201d<\/p>\n\n\n\n<p>\u5982\u679c\u6ca1\u6709\u628a\u201cRIP \u53ef\u80fd\u88ab\u65e7\u90bb\u5c45\u4fe1\u606f\u8bef\u5bfc\u201d\u8fd9\u4ef6\u4e8b\u5355\u72ec\u62ce\u51fa\u6765\uff0c\u5c31\u5f88\u96be\u63a5\u53d7\u8fd9\u4e2a\u7b54\u6848\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u9898\u672c\u8d28\u4e0a\u4e0d\u662f\u5728\u5426\u5b9a\u201c16 \u8868\u793a\u4e0d\u53ef\u8fbe\u201d\uff0c<br>\u800c\u662f\u5728\u63d0\u9192\uff1a<\/p>\n\n\n\n<p><strong>\u5373\u4f7f\u771f\u5b9e\u7f51\u7edc\u5df2\u7ecf\u4e0d\u53ef\u8fbe\uff0cRIP \u7684\u8def\u7531\u8868\u4e5f\u53ef\u80fd\u4e0d\u4f1a\u7acb\u523b\u6b63\u786e\u53cd\u6620\u8fd9\u4e2a\u4e8b\u5b9e\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ec0\u4e48\u65f6\u5019\u4f1a\u76f4\u63a5\u53d8\u6210 16\uff0c\u800c\u4e0d\u662f\u51fa\u73b0 3<\/h2>\n\n\n\n<p>\u8fd9\u4e5f\u662f\u8fd9\u9053\u9898\u6700\u503c\u5f97\u8865\u5145\u7684\u4e00\u70b9\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u9898\u76ee\u660e\u786e\u7ed9\u51fa\u4e0b\u9762\u8fd9\u4e9b\u6761\u4ef6\u4e4b\u4e00\uff0c\u90a3\u4e48\u5f80\u5f80\u4e0d\u4f1a\u51fa\u73b0\u8fd9\u79cd\u201c\u5148\u53d8\u6210 3\u201d\u7684\u73b0\u8c61\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u4f7f\u7528\u4e86\u6bd2\u6027\u9006\u8f6c<\/h3>\n\n\n\n<p>\u4e5f\u5c31\u662f\u628a\u4e0d\u53ef\u8fbe\u8def\u7531\u660e\u786e\u6309 16 \u901a\u544a\u7ed9\u76f8\u5173\u90bb\u5c45\uff0c\u9632\u6b62\u5bf9\u65b9\u518d\u8bef\u4ee5\u4e3a\u201c\u8fd8\u6709\u8def\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u4f7f\u7528\u4e86\u6c34\u5e73\u5206\u5272<\/h3>\n\n\n\n<p>\u4ece\u67d0\u4e2a\u63a5\u53e3\u5b66\u6765\u7684\u8def\u7531\uff0c\u4e0d\u518d\u4ece\u8be5\u63a5\u53e3\u539f\u6837\u53d1\u56de\u53bb\uff0c\u51cf\u5c11\u73af\u8def\u548c\u9519\u8bef\u53cd\u9988\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u9898\u76ee\u660e\u786e\u6309\u201c\u7406\u60f3\u66f4\u65b0\u201d\u5904\u7406<\/h3>\n\n\n\n<p>\u6709\u4e9b\u9898\u4e0d\u4f1a\u8003 RIP \u7684\u7f3a\u9677\uff0c\u53ea\u8003\u6700\u76f4\u63a5\u7684\u66f4\u65b0\u903b\u8f91\u3002<br>\u8fd9\u79cd\u9898\u91cc\uff0c\u4e00\u770b\u5230\u6545\u969c\uff0c\u5c31\u6309 16 \u5904\u7406\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c25\u9898\u4e4b\u6240\u4ee5\u7279\u6b8a\uff0c\u6070\u6070\u662f\u56e0\u4e3a\u5b83\u9ed8\u8ba4\u8003\u7684\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u6ca1\u6709\u53ca\u65f6\u6291\u5236\u9519\u8bef\u4f20\u64ad\u7684\u666e\u901a RIP \u573a\u666f\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5173\u4e8e\u8fd9\u9053\u9898\uff0c\u6700\u5e94\u8be5\u8bb0\u4f4f\u7684\u4e00\u53e5\u8bdd<\/h2>\n\n\n\n<p>\u7b2c25\u9898\u4e0d\u662f\u5728\u8003\u201c16 \u7684\u5b9a\u4e49\u201d\uff0c<br>\u800c\u662f\u5728\u8003\uff1a<\/p>\n\n\n\n<p><strong>\u4e3a\u4ec0\u4e48\u771f\u5b9e\u6545\u969c\u5df2\u7ecf\u53d1\u751f\uff0c\u4f46 RIP \u534f\u8bae\u4ecd\u53ef\u80fd\u6682\u65f6\u7b97\u51fa\u4e00\u4e2a\u5047\u7684\u53ef\u8fbe\u8ddd\u79bb\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u4e2a\u201c\u5047\u7684\u53ef\u8fbe\u8ddd\u79bb\u201d\uff0c\u5c31\u662f 3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u90e8\u5206\u8865\u5145\u77e5\u8bc6\u6700\u9002\u5408\u600e\u4e48\u8bb0<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u53ef\u4ee5\u538b\u7f29\u6210\u4e00\u4e2a\u975e\u5e38\u9002\u5408\u8003\u524d\u56de\u5fc6\u7684\u5c0f\u7ed3\u8bba\uff1a<\/p>\n\n\n\n<p><strong>\u5f53 RIP \u7f51\u7edc\u4e2d\u67d0\u6761\u771f\u5b9e\u8def\u5f84\u521a\u5931\u6548\u65f6\uff0c\u6700\u5148\u53d1\u73b0\u6545\u969c\u7684\u8def\u7531\u5668\u4e0d\u4e00\u5b9a\u9a6c\u4e0a\u5bf9\u5916\u901a\u544a 16\uff1b\u5982\u679c\u90bb\u5c45\u8fd8\u4fdd\u7559\u7740\u65e7\u7684\u53ef\u8fbe\u8ddd\u79bb\uff0c\u5b83\u53ef\u80fd\u4f1a\u88ab\u8bef\u5bfc\uff0c\u91cd\u65b0\u7b97\u51fa\u4e00\u4e2a\u66f4\u5c0f\u4f46\u9519\u8bef\u7684\u8ddd\u79bb\u503c\uff0c\u8fd9\u5c31\u662f\u574f\u6d88\u606f\u4f20\u5f97\u6162\u548c\u8ba1\u6570\u5230\u65e0\u7a77\u73b0\u8c61\u3002<\/strong><\/p>\n\n\n\n<p>\u628a\u8fd9\u53e5\u8bdd\u8bb0\u4f4f\uff0c\u7b2c25\u9898\u8fd9\u79cd\u201c\u7b54\u6848\u770b\u7740\u4e0d\u5408\u7406\uff0c\u5176\u5b9e\u8003\u7684\u662f\u534f\u8bae\u7f3a\u9677\u201d\u7684\u9898\u5c31\u4e0d\u5bb9\u6613\u518d\u6389\u5751\u91cc\u4e86\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/26-1024x477.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"477\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/26-1024x477.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1991\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u4e24\u9898\u90fd\u5c5e\u4e8e\u201c\u8def\u7531\u534f\u8bae + \u8def\u7531\u7b97\u6cd5\u201d\u7684\u5178\u578b\u8003\u6cd5\u3002\u7b2c26\u9898\u8003\u7684\u662f\u5e38\u89c1\u8def\u7531\u534f\u8bae\u8fd0\u884c\u5728\u54ea\u4e00\u5c42\u3001\u5c01\u88c5\u5230\u4ec0\u4e48\u534f\u8bae\u91cc\uff1b\u7b2c27\u9898\u8003\u7684\u662f\u8ddd\u79bb\u2014\u5411\u91cf\u7b97\u6cd5\u7684\u66f4\u65b0\u89c4\u5219\uff0c\u4e5f\u5c31\u662f\u62ff\u5230\u90bb\u5c45\u7684\u8ddd\u79bb\u5411\u91cf\u4e4b\u540e\uff0c\u5982\u4f55\u91cd\u65b0\u8ba1\u7b97\u81ea\u5df1\u5230\u5404\u76ee\u7684\u7f51\u7edc\u7684\u8ddd\u79bb\u3002<\/p>\n\n\n\n<p>\u5148\u7ed9\u7ed3\u8bba\uff1a<\/p>\n\n\n\n<p>\u7b2c26\u9898\u9009 <strong>D\uff1aUDP\u3001IP\u3001TCP<\/strong>\u3002<br>\u7b2c27\u9898\u9009 <strong>D\uff1a9\uff0c20\uff0c28\uff0c20<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">26\u9898\u600e\u4e48\u505a<\/h2>\n\n\n\n<p>\u9898\u76ee\u95ee\u7684\u662f\uff1a<strong>\u76f4\u63a5\u5c01\u88c5 RIP\u3001OSPF\u3001BGP \u62a5\u6587\u7684\u534f\u8bae\u5206\u522b\u662f\u4ec0\u4e48<\/strong>\u3002<\/p>\n\n\n\n<p>\u8fd9\u9053\u9898\u672c\u8d28\u4e0a\u4e0d\u662f\u8003\u201c\u8c01\u662f\u8def\u7531\u534f\u8bae\u201d\u8fd9\u4e48\u7b80\u5355\uff0c\u800c\u662f\u8003\u201c\u8fd9\u4e9b\u8def\u7531\u534f\u8bae\u5de5\u4f5c\u65f6\uff0c\u62a5\u6587\u5230\u5e95\u4ea4\u7ed9\u8c01\u6765\u627f\u8f7d\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u8bb0\u4f4f\u4e09\u4e2a\u56fa\u5b9a\u642d\u914d<\/h3>\n\n\n\n<p>RIP \u2192 UDP<br>OSPF \u2192 IP<br>BGP \u2192 TCP<\/p>\n\n\n\n<p>\u6240\u4ee5\u987a\u5e8f\u662f\uff1a<\/p>\n\n\n\n<p>RIP\u3001OSPF\u3001BGP<br>\u5bf9\u5e94<br>UDP\u3001IP\u3001TCP<\/p>\n\n\n\n<p>\u7b54\u6848\u5c31\u662f <strong>D<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u662f\u8fd9\u6837<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1\uff09RIP \u76f4\u63a5\u5c01\u88c5\u5728 UDP \u4e2d<\/h4>\n\n\n\n<p>RIP \u662f\u5e94\u7528\u5c42\u8def\u7531\u534f\u8bae\uff0c\u4f7f\u7528 UDP \u4f20\u8f93\uff0c\u7aef\u53e3\u53f7\u662f 520\u3002<br>\u8003\u8bd5\u91cc\u6700\u5e38\u89c1\u7684\u8868\u8ff0\u5c31\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RIP \u4f7f\u7528 UDP<\/li>\n\n\n\n<li>RIP \u662f\u8ddd\u79bb\u2014\u5411\u91cf\u8def\u7531\u534f\u8bae<\/li>\n\n\n\n<li>RIP \u4ee5\u8df3\u6570\u4f5c\u4e3a\u5ea6\u91cf\uff0c\u6700\u5927\u8df3\u6570 15\uff0c16 \u8868\u793a\u4e0d\u53ef\u8fbe<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u770b\u5230 RIP\uff0c\u7b2c\u4e00\u53cd\u5e94\u5c31\u5e94\u8be5\u662f <strong>UDP<\/strong>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2\uff09OSPF \u76f4\u63a5\u5c01\u88c5\u5728 IP \u4e2d<\/h4>\n\n\n\n<p>OSPF \u4e0d\u901a\u8fc7 TCP\uff0c\u4e5f\u4e0d\u901a\u8fc7 UDP\uff0c\u800c\u662f<strong>\u76f4\u63a5\u7531 IP \u627f\u8f7d<\/strong>\u3002<br>\u4e5f\u5c31\u662f\u8bf4\uff0cOSPF \u62a5\u6587\u653e\u5728 IP \u6570\u636e\u62a5\u7684\u6570\u636e\u90e8\u5206\u4e2d\uff0c\u9760 IP \u9996\u90e8\u4e2d\u7684\u534f\u8bae\u5b57\u6bb5\u533a\u5206\uff0cOSPF \u7684\u534f\u8bae\u53f7\u662f 89\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e00\u70b9\u975e\u5e38\u5bb9\u6613\u548c RIP\u3001BGP \u6df7\u6dc6\uff0c\u56e0\u4e3a\u5927\u5bb6\u90fd\u662f\u8def\u7531\u534f\u8bae\uff0c\u4f46\u5c01\u88c5\u65b9\u5f0f\u4e0d\u540c\u3002<br>\u8003\u8bd5\u5c31\u559c\u6b22\u4e13\u95e8\u62ff\u8fd9\u4e00\u70b9\u51fa\u9009\u62e9\u9898\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3\uff09BGP \u76f4\u63a5\u5c01\u88c5\u5728 TCP \u4e2d<\/h4>\n\n\n\n<p>BGP \u662f\u5916\u90e8\u7f51\u5173\u534f\u8bae\uff0c\u8fd0\u884c\u5728 TCP \u4e4b\u4e0a\uff0c\u7aef\u53e3\u53f7 179\u3002<br>BGP \u4e4b\u6240\u4ee5\u4f7f\u7528 TCP\uff0c\u662f\u56e0\u4e3a\u5b83\u66f4\u5f3a\u8c03\u53ef\u9760\u4f20\u8f93\u3001\u6309\u5e8f\u4ea4\u4ed8\u3001\u4f1a\u8bdd\u7ef4\u6301\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u770b\u5230 BGP\uff0c\u7b2c\u4e00\u53cd\u5e94\u5c31\u662f <strong>TCP<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u8003\u4e86\u54ea\u4e9b\u77e5\u8bc6\u70b9<\/h3>\n\n\n\n<p>\u8fd9\u9898\u4e3b\u8981\u8003\u4e86\u4e09\u4e2a\u70b9\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c<strong>\u5e38\u89c1\u8def\u7531\u534f\u8bae\u7684\u5206\u7c7b\u4e0e\u7279\u5f81<\/strong>\u3002<br>RIP \u662f\u8ddd\u79bb\u2014\u5411\u91cf\u534f\u8bae\uff0cOSPF \u662f\u94fe\u8def\u72b6\u6001\u534f\u8bae\uff0cBGP \u662f\u8def\u5f84\u5411\u91cf\u534f\u8bae\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\uff0c<strong>\u8def\u7531\u534f\u8bae\u62a5\u6587\u7684\u5c01\u88c5\u65b9\u5f0f<\/strong>\u3002<br>\u8fd9\u662f\u6700\u6838\u5fc3\u7684\u8003\u70b9\uff0c\u4e5f\u662f\u672c\u9898\u7684\u76f4\u63a5\u843d\u70b9\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\uff0c<strong>\u7f51\u7edc\u5c42\u534f\u8bae\u4e0e\u4f20\u8f93\u5c42\u534f\u8bae\u7684\u533a\u5206<\/strong>\u3002<br>\u5f88\u591a\u4eba\u4f1a\u628a\u201c\u8def\u7531\u534f\u8bae\u5c5e\u4e8e\u7f51\u7edc\u5c42\u201d\u8bef\u7406\u89e3\u6210\u201c\u5b83\u4eec\u90fd\u76f4\u63a5\u5c01\u88c5\u5728 IP \u91cc\u201d\u3002\u8fd9\u662f\u9519\u7684\u3002<br>\u201c\u529f\u80fd\u4e0a\u5c5e\u4e8e\u7f51\u7edc\u5c42\u63a7\u5236\u534f\u8bae\u201d\u548c\u201c\u62a5\u6587\u901a\u8fc7\u8c01\u6765\u4f20\u201d\u662f\u4e24\u4ef6\u4e8b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u4e3a\u4ec0\u4e48\u5bb9\u6613\u9519<\/h3>\n\n\n\n<p>\u6700\u5bb9\u6613\u9519\u5728 OSPF\u3002<\/p>\n\n\n\n<p>\u5f88\u591a\u4eba\u80cc\u6210\u4e86\u201cRIP \u548c BGP \u90fd\u662f\u5e94\u7528\u5c42\uff0c\u6240\u4ee5\u90fd\u8d70\u4f20\u8f93\u5c42\uff1bOSPF \u4e5f\u662f\u8def\u7531\u534f\u8bae\uff0c\u53ef\u80fd\u4e5f\u8d70 UDP \u6216 TCP\u201d\uff0c\u7ed3\u679c\u5c31\u9519\u4e86\u3002<br>OSPF \u7684\u7279\u6b8a\u70b9\u5c31\u5728\u4e8e\uff1a<strong>\u5b83\u76f4\u63a5\u4f7f\u7528 IP\uff0c\u4e0d\u7ecf\u8fc7 TCP\/UDP\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u7c7b\u9898\u6700\u7a33\u7684\u505a\u6cd5\u4e0d\u662f\u4e34\u573a\u63a8\uff0c\u800c\u662f\u76f4\u63a5\u80cc\u6210\u56fa\u5b9a\u642d\u914d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RIP\u2014UDP<\/li>\n\n\n\n<li>OSPF\u2014IP<\/li>\n\n\n\n<li>BGP\u2014TCP<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u662f\u9ad8\u9891\u9001\u5206\u70b9\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">27\u9898\u600e\u4e48\u505a<\/h2>\n\n\n\n<p>\u8fd9\u9898\u662f\u4e00\u4e2a\u6807\u51c6\u7684<strong>\u8ddd\u79bb\u2014\u5411\u91cf\u8def\u7531\u7b97\u6cd5\u66f4\u65b0\u9898<\/strong>\u3002<\/p>\n\n\n\n<p>\u9898\u76ee\u7ed9\u51fa\uff1a<\/p>\n\n\n\n<p>\u8def\u7531\u5668 E \u5230\u90bb\u5c45 A\u3001B\u3001C\u3001D \u7684\u76f4\u63a5\u94fe\u8def\u8ddd\u79bb\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>E\u2192A = 8<\/li>\n\n\n\n<li>E\u2192B = 10<\/li>\n\n\n\n<li>E\u2192C = 12<\/li>\n\n\n\n<li>E\u2192D = 6<\/li>\n<\/ul>\n\n\n\n<p>\u53c8\u7ed9\u51fa\u4e86 A\u3001B\u3001C\u3001D \u5230 Net1\uff5eNet4 \u7684\u8ddd\u79bb\u5411\u91cf\u3002<br>\u8981\u6c42\u7684\u662f\uff1a<strong>E \u66f4\u65b0\u540e\uff0c\u5230\u5404\u76ee\u7684\u7f51\u7edc\u7684\u8ddd\u79bb\u662f\u591a\u5c11\u3002<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u8bf4\u505a\u9898\u516c\u5f0f<\/h3>\n\n\n\n<p>\u8ddd\u79bb\u2014\u5411\u91cf\u7b97\u6cd5\u7684\u6838\u5fc3\u516c\u5f0f\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><code>E\u5230\u67d0\u76ee\u7684\u7f51\u7edc\u7684\u8ddd\u79bb = min{ \u7ecf\u8fc7\u67d0\u90bb\u5c45\u7684\u4ee3\u4ef7 }<\/code><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><code>D_E(\u76ee\u7684\u7f51\u7edc) = min[ c(E,A)+D_A(\u76ee\u7684\u7f51\u7edc), c(E,B)+D_B(\u76ee\u7684\u7f51\u7edc), c(E,C)+D_C(\u76ee\u7684\u7f51\u7edc), c(E,D)+D_D(\u76ee\u7684\u7f51\u7edc) ]<\/code><\/p>\n\n\n\n<p>\u5176\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>c(E,A)<\/code> \u8868\u793a E \u5230\u90bb\u5c45 A \u7684\u76f4\u63a5\u94fe\u8def\u4ee3\u4ef7<\/li>\n\n\n\n<li><code>D_A(\u76ee\u7684\u7f51\u7edc)<\/code> \u8868\u793a A \u544a\u8bc9 E\uff1aA \u5230\u8be5\u76ee\u7684\u7f51\u7edc\u7684\u8ddd\u79bb<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u9053\u9898\u5c31\u662f\u628a\u6bcf\u4e2a\u76ee\u7684\u7f51\u7edc\u90fd\u6309\u8fd9\u4e2a\u516c\u5f0f\u7b97\u4e00\u904d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u8868\u683c\u6574\u7406<\/h3>\n\n\n\n<p>\u90bb\u5c45\u7684\u8ddd\u79bb\u5411\u91cf\u662f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>A<\/th><th>B<\/th><th>C<\/th><th>D<\/th><\/tr><\/thead><tbody><tr><td>Net1<\/td><td>1<\/td><td>23<\/td><td>20<\/td><td>22<\/td><\/tr><tr><td>Net2<\/td><td>12<\/td><td>35<\/td><td>30<\/td><td>28<\/td><\/tr><tr><td>Net3<\/td><td>24<\/td><td>18<\/td><td>16<\/td><td>36<\/td><\/tr><tr><td>Net4<\/td><td>36<\/td><td>30<\/td><td>8<\/td><td>24<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u800c E \u5230\u5404\u90bb\u5c45\u7684\u76f4\u63a5\u94fe\u8def\u4ee3\u4ef7\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5230 A\uff1a8<\/li>\n\n\n\n<li>\u5230 B\uff1a10<\/li>\n\n\n\n<li>\u5230 C\uff1a12<\/li>\n\n\n\n<li>\u5230 D\uff1a6<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5206\u522b\u8ba1\u7b97<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1\uff09\u5230 Net1 \u7684\u8ddd\u79bb<\/h4>\n\n\n\n<p>\u7ecf A\uff1a8 + 1 = 9<br>\u7ecf B\uff1a10 + 23 = 33<br>\u7ecf C\uff1a12 + 20 = 32<br>\u7ecf D\uff1a6 + 22 = 28<\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\u503c\uff0c\u5f97\u5230\uff1a<\/p>\n\n\n\n<p><code>D_E(Net1) = 9<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">2\uff09\u5230 Net2 \u7684\u8ddd\u79bb<\/h4>\n\n\n\n<p>\u7ecf A\uff1a8 + 12 = 20<br>\u7ecf B\uff1a10 + 35 = 45<br>\u7ecf C\uff1a12 + 30 = 42<br>\u7ecf D\uff1a6 + 28 = 34<\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\u503c\uff0c\u5f97\u5230\uff1a<\/p>\n\n\n\n<p><code>D_E(Net2) = 20<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">3\uff09\u5230 Net3 \u7684\u8ddd\u79bb<\/h4>\n\n\n\n<p>\u7ecf A\uff1a8 + 24 = 32<br>\u7ecf B\uff1a10 + 18 = 28<br>\u7ecf C\uff1a12 + 16 = 28<br>\u7ecf D\uff1a6 + 36 = 42<\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\u503c\uff0c\u5f97\u5230\uff1a<\/p>\n\n\n\n<p><code>D_E(Net3) = 28<\/code><\/p>\n\n\n\n<p>\u8fd9\u91cc\u6ce8\u610f\uff0c\u7ecf\u8fc7 B \u548c\u7ecf\u8fc7 C \u90fd\u662f 28\uff0c\u6700\u77ed\u8ddd\u79bb\u4e00\u6837\uff0c\u9898\u76ee\u53ea\u95ee\u8ddd\u79bb\uff0c\u4e0d\u95ee\u4e0b\u4e00\u8df3\uff0c\u6240\u4ee5\u5199 28 \u5373\u53ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h4 class=\"wp-block-heading\">4\uff09\u5230 Net4 \u7684\u8ddd\u79bb<\/h4>\n\n\n\n<p>\u7ecf A\uff1a8 + 36 = 44<br>\u7ecf B\uff1a10 + 30 = 40<br>\u7ecf C\uff1a12 + 8 = 20<br>\u7ecf D\uff1a6 + 24 = 30<\/p>\n\n\n\n<p>\u53d6\u6700\u5c0f\u503c\uff0c\u5f97\u5230\uff1a<\/p>\n\n\n\n<p><code>D_E(Net4) = 20<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u7ec8\u7ed3\u679c<\/h3>\n\n\n\n<p>\u6240\u4ee5 E \u66f4\u65b0\u540e\uff0c\u5230 Net1\uff5eNet4 \u7684\u8ddd\u79bb\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n<p><code>9\uff0c20\uff0c28\uff0c20<\/code><\/p>\n\n\n\n<p>\u7b54\u6848\u9009 <strong>D<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">27\u9898\u8003\u4e86\u54ea\u4e9b\u77e5\u8bc6\u70b9<\/h2>\n\n\n\n<p>\u8fd9\u9898\u4e3b\u8981\u8003\u56db\u4e2a\u77e5\u8bc6\u70b9\uff0c\u800c\u4e14\u5f88\u5178\u578b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1\uff09\u8ddd\u79bb\u2014\u5411\u91cf\u7b97\u6cd5\u7684\u66f4\u65b0\u601d\u60f3<\/h3>\n\n\n\n<p>\u6bcf\u4e2a\u8def\u7531\u5668\u5e76\u4e0d\u77e5\u9053\u5168\u7f51\u62d3\u6251\uff0c\u53ea\u77e5\u9053\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u81ea\u5df1\u5230\u90bb\u5c45\u7684\u4ee3\u4ef7<\/li>\n\n\n\n<li>\u90bb\u5c45\u544a\u8bc9\u81ea\u5df1\u7684\u201c\u5230\u5404\u76ee\u7684\u5730\u7684\u8ddd\u79bb\u201d<\/li>\n<\/ul>\n\n\n\n<p>\u7136\u540e\u901a\u8fc7\u201c\u5230\u90bb\u5c45\u7684\u4ee3\u4ef7 + \u90bb\u5c45\u5230\u76ee\u7684\u5730\u7684\u4ee3\u4ef7\u201d\u6765\u8fed\u4ee3\u66f4\u65b0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2\uff09\u8ddd\u79bb\u5411\u91cf\u8868\u7684\u542b\u4e49<\/h3>\n\n\n\n<p>\u8868\u91cc\u4e0d\u662f\u201c\u90bb\u5c45\u7f16\u53f7\u201d\uff0c\u4e5f\u4e0d\u662f\u201c\u8df3\u6570\u56fa\u5b9a\u4e3a1\u201d\uff0c\u800c\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u90bb\u5c45\u5230\u5404\u76ee\u7684\u7f51\u7edc\u7684\u5f53\u524d\u4f30\u8ba1\u8ddd\u79bb\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u70b9\u5fc5\u987b\u770b\u660e\u767d\uff0c\u4e0d\u7136\u540e\u9762\u4e0d\u4f1a\u7b97\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3\uff09\u6700\u77ed\u8def\u5f84\u7684\u5c40\u90e8\u9012\u63a8<\/h3>\n\n\n\n<p>\u5bf9\u4e8e\u67d0\u4e2a\u76ee\u7684\u7f51\u7edc\uff0c\u8981\u628a\u201c\u7ecf\u8fc7\u6bcf\u4e2a\u90bb\u5c45\u7684\u603b\u4ee3\u4ef7\u201d\u90fd\u5217\u51fa\u6765\uff0c\u7136\u540e\u53d6\u6700\u5c0f\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">4\uff09\u94fe\u8def\u4ee3\u4ef7\u4e0d\u4e00\u5b9a\u662f1<\/h3>\n\n\n\n<p>\u8fd9\u9898\u5c24\u5176\u5bb9\u6613\u8bef\u5224\u6210 RIP \u90a3\u79cd\u201c\u6bcf\u7ecf\u8fc7\u4e00\u4e2a\u8def\u7531\u5668\u8df3\u6570 +1\u201d\u3002<br>\u4f46\u9898\u76ee\u660e\u786e\u8bf4\u7684\u662f\uff1a<\/p>\n\n\n\n<p>\u201c\u76f4\u63a5\u94fe\u8def\u8ddd\u79bb\u5206\u522b\u662f 8\u300110\u300112\u30016\u201d<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u91cc\u52a0\u7684\u4e0d\u662f 1\uff0c\u800c\u662f\u5404\u81ea\u7684\u94fe\u8def\u4ee3\u4ef7\u3002<\/p>\n\n\n\n<p>\u8fd9\u6b63\u662f\u672c\u9898\u7684\u9677\u9631\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9898\u4e3a\u4ec0\u4e48\u5bb9\u6613\u9519<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u7c7b\u9519\u8bef\uff1a\u628a\u5b83\u5f53\u6210 RIP \u8df3\u6570\u9898<\/h3>\n\n\n\n<p>\u6709\u4e9b\u4eba\u4e00\u770b\u5230\u201c\u8ddd\u79bb\u2014\u5411\u91cf\u7b97\u6cd5\u201d\uff0c\u5c31\u76f4\u63a5\u4ee3\u5165\u201c\u6bcf\u8df3 +1\u201d\u3002<br>\u4e8e\u662f\u4f1a\u628a\u516c\u5f0f\u5199\u6210\uff1a<\/p>\n\n\n\n<p><code>\u90bb\u5c45\u5230\u76ee\u7684\u7f51\u7edc\u7684\u8ddd\u79bb + 1<\/code><\/p>\n\n\n\n<p>\u8fd9\u662f\u9519\u8bef\u7684\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u672c\u9898\u7ed9\u7684\u662f<strong>\u4e00\u822c\u5316\u7684\u8ddd\u79bb\u2014\u5411\u91cf\u7b97\u6cd5<\/strong>\uff0c\u94fe\u8def\u4ee3\u4ef7\u5df2\u7ecf\u660e\u786e\u4e0d\u662f\u7edf\u4e00\u7684 1\uff0c\u800c\u662f 8\u300110\u300112\u30016\u3002<br>\u6240\u4ee5\u5e94\u8be5\u52a0\u5b9e\u9645\u94fe\u8def\u4ee3\u4ef7\uff0c\u800c\u4e0d\u662f\u56fa\u5b9a\u52a01\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u7c7b\u9519\u8bef\uff1a\u628a\u90bb\u5c45\u7684\u6700\u5c0f\u503c\u76f4\u63a5\u6284\u4e0b\u6765<\/h3>\n\n\n\n<p>\u6bd4\u5982 Net1 \u8fd9\u4e00\u884c\uff0c\u770b\u5230 A \u5230 Net1 \u662f 1\uff0c\u5c31\u76f4\u63a5\u4ee5\u4e3a E \u5230 Net1 \u4e5f\u662f 1\u3002<br>\u8fd9\u4e5f\u9519\u4e86\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a E \u4e0d\u76f4\u63a5\u8fde\u5230 Net1\uff0c\u5b83\u8981\u5148\u5230 A\uff0c\u518d\u7531 A \u53bb Net1\u3002<br>\u6240\u4ee5\u603b\u4ee3\u4ef7\u5e94\u8be5\u662f\uff1a<\/p>\n\n\n\n<p><code>E\u5230A\u7684\u4ee3\u4ef7 + A\u5230Net1\u7684\u4ee3\u4ef7 = 8 + 1 = 9<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u7c7b\u9519\u8bef\uff1a\u7b97\u5bf9\u4e00\u534a\uff0c\u6ca1\u6709\u9010\u9879\u6bd4\u8f83<\/h3>\n\n\n\n<p>\u6709\u4e9b\u4eba\u770b\u5230\u67d0\u4e00\u5217\u6bd4\u8f83\u5c0f\uff0c\u5c31\u76f4\u63a5\u9009\u4e86\uff0c\u6ca1\u628a\u56db\u4e2a\u90bb\u5c45\u90fd\u7b97\u5b8c\u3002<br>\u8fd9\u7c7b\u9898\u4e00\u5b9a\u8981\u8001\u8001\u5b9e\u5b9e\u628a\u56db\u6761\u8def\u5f84\u90fd\u5217\u51fa\u6765\u518d\u53d6\u6700\u5c0f\u503c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4ee5\u540e\u600e\u4e48\u5feb\u901f\u8bc6\u522b\u8fd9\u7c7b\u9898<\/h2>\n\n\n\n<p>\u505a\u8fd9\u7c7b\u9898\u65f6\uff0c\u53ef\u4ee5\u6309\u4e0b\u9762\u8fd9\u4e2a\u56fa\u5b9a\u6d41\u7a0b\u8d70\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u5148\u770b\u9898\u76ee\u8bf4\u7684\u662f\u4e0d\u662f<strong>\u8ddd\u79bb\u2014\u5411\u91cf\u7b97\u6cd5<\/strong>\u3002<br>\u5982\u679c\u662f\uff0c\u90a3\u57fa\u672c\u5c31\u662f\u201c\u90bb\u5c45\u4ee3\u4ef7 + \u90bb\u5c45\u901a\u544a\u503c\uff0c\u518d\u53d6\u6700\u5c0f\u201d\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u6b65\uff0c\u7acb\u523b\u5224\u65ad\u201c\u52a0\u7684\u662f 1 \u8fd8\u662f\u5b9e\u9645\u94fe\u8def\u4ee3\u4ef7\u201d\u3002<br>\u8fd9\u4e00\u6b65\u6700\u5173\u952e\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u9898\u76ee\u8bf4\u201c\u8df3\u6570\u201d\u201cRIP\u201d\u201c\u6bcf\u6761\u94fe\u8def\u4ee3\u4ef7\u76f8\u540c\u201d\uff0c\u901a\u5e38\u6309 <code>+1<\/code><\/li>\n\n\n\n<li>\u5982\u679c\u9898\u76ee\u7ed9\u4e86\u5177\u4f53\u94fe\u8def\u6743\u503c\uff0c\u6bd4\u5982 8\u300110\u300112\u30016\uff0c\u5c31\u6309\u5177\u4f53\u503c\u76f8\u52a0<\/li>\n<\/ul>\n\n\n\n<p>\u7b2c\u4e09\u6b65\uff0c\u5bf9\u6bcf\u4e2a\u76ee\u7684\u7f51\u7edc\u5355\u72ec\u5217\u51fa\u56db\u4e2a\u5019\u9009\u503c\u3002<br>\u4e0d\u8981\u5fc3\u7b97\uff0c\u4e0d\u8981\u8df3\u6b65\u3002<\/p>\n\n\n\n<p>\u7b2c\u56db\u6b65\uff0c\u53d6\u6700\u5c0f\u503c\u3002<br>\u5982\u679c\u6709\u5e76\u5217\u6700\u5c0f\uff0c\u53ea\u95ee\u8ddd\u79bb\u65f6\u5199\u6700\u5c0f\u503c\u5373\u53ef\uff1b\u82e5\u95ee\u4e0b\u4e00\u8df3\uff0c\u5219\u4efb\u9009\u4e00\u4e2a\u6700\u4f18\u90bb\u5c45\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e24\u9898\u653e\u5728\u4e00\u8d77\u770b\uff0c\u77e5\u8bc6\u4e3b\u7ebf\u662f\u4ec0\u4e48<\/h2>\n\n\n\n<p>\u8fd9\u4e24\u9898\u867d\u7136\u9898\u578b\u4e0d\u540c\uff0c\u4f46\u90fd\u5728\u8003\u201c\u8def\u7531\u201d\u8fd9\u4e00\u7ae0\u91cc\u6700\u6838\u5fc3\u7684\u4e24\u6761\u7ebf\u3002<\/p>\n\n\n\n<p>\u4e00\u6761\u7ebf\u662f<strong>\u8def\u7531\u534f\u8bae\u672c\u8eab<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RIP\u3001OSPF\u3001BGP\u5206\u522b\u662f\u4ec0\u4e48<\/li>\n\n\n\n<li>\u5404\u81ea\u5de5\u4f5c\u673a\u5236\u6709\u4ec0\u4e48\u4e0d\u540c<\/li>\n\n\n\n<li>\u62a5\u6587\u7531\u8c01\u627f\u8f7d<\/li>\n<\/ul>\n\n\n\n<p>\u53e6\u4e00\u6761\u7ebf\u662f<strong>\u8def\u7531\u7b97\u6cd5\u5982\u4f55\u7b97\u8def\u5f84<\/strong>\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8ddd\u79bb\u2014\u5411\u91cf\u600e\u4e48\u66f4\u65b0<\/li>\n\n\n\n<li>\u94fe\u8def\u72b6\u6001\u548c\u8ddd\u79bb\u2014\u5411\u91cf\u7684\u533a\u522b<\/li>\n\n\n\n<li>\u5ea6\u91cf\u503c\u5230\u5e95\u662f\u4ec0\u4e48<\/li>\n<\/ul>\n\n\n\n<p>\u7b2c26\u9898\u504f\u201c\u534f\u8bae\u8bb0\u5fc6\u578b\u9001\u5206\u70b9\u201d\uff0c\u7b2c27\u9898\u504f\u201c\u7b97\u6cd5\u8ba1\u7b97\u578b\u57fa\u7840\u9898\u201d\u3002<br>\u590d\u4e60\u65f6\u8fd9\u4e24\u7c7b\u9898\u6700\u597d\u653e\u5728\u4e00\u8d77\u6574\u7406\uff0c\u56e0\u4e3a\u201c\u534f\u8bae\u662f\u4ec0\u4e48\u201d\u548c\u201c\u534f\u8bae\u5185\u90e8\u5927\u81f4\u600e\u4e48\u8ba1\u7b97\u201d\u672c\u6765\u5c31\u662f\u4e00\u4f53\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/3-1024x910.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"910\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/3-1024x910.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1994\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u4e09\u9898\u662f\u4e00\u4e2a\u5f88\u5178\u578b\u7684\u201c\u8def\u7531\u534f\u8bae\u7efc\u5408\u9898\u7ec4\u201d\uff0c\u5206\u522b\u5728\u8003\u4e09\u7c7b\u80fd\u529b\uff1a<\/p>\n\n\n\n<p>\u7b2c1\u9898\u8003\u201c\u8def\u7531\u534f\u8bae\u4e3a\u4ec0\u4e48\u9009\u4e0d\u540c\u7684\u4f20\u8f93\u65b9\u5f0f\u201d\uff1b<br>\u7b2c2\u9898\u8003\u201cRIP \u8ddd\u79bb\u5411\u91cf\u66f4\u65b0\u201d\uff1b<br>\u7b2c3\u9898\u8003\u201cOSPF \u6700\u77ed\u8def\u5f84\u8ba1\u7b97\u201d\u3002<\/p>\n\n\n\n<p>\u8fd9\u7ec4\u9898\u4e0d\u80fd\u53ea\u80cc\u5b9a\u4e49\uff0c\u5fc5\u987b\u4f1a\u4ece\u534f\u8bae\u673a\u5236\u53cd\u63a8\u51fa\u9898\u76ee\u7b54\u6848\u3002\u4e0b\u9762\u6309\u9898\u76ee\u987a\u5e8f\u5b8c\u6574\u62c6\u5f00\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c1\u9898\uff1aRIP \u7528 UDP\uff0cOSPF \u7528 IP\uff0cBGP \u7528 TCP\uff0c\u4e3a\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u9898\u7ed3\u8bba<\/h3>\n\n\n\n<p>RIP \u7528 UDP\uff0c\u662f\u56e0\u4e3a\u5b83\u5b9e\u73b0\u7b80\u5355\u3001\u5f00\u9500\u5c0f\uff0c\u9002\u5408\u5468\u671f\u6027\u53d1\u9001\u6574\u5f20\u8def\u7531\u8868\uff0c\u4e0d\u9700\u8981\u5efa\u7acb\u8fde\u63a5\u3002<\/p>\n\n\n\n<p>OSPF \u76f4\u63a5\u7528 IP\uff0c\u662f\u56e0\u4e3a\u5b83\u672c\u8eab\u5c31\u662f\u7f51\u7edc\u5c42\u5185\u90e8\u8def\u7531\u534f\u8bae\uff0c\u9700\u8981\u81ea\u5df1\u63a7\u5236\u62a5\u6587\u7c7b\u578b\u3001\u90bb\u63a5\u5efa\u7acb\u3001\u94fe\u8def\u72b6\u6001\u6cdb\u6d2a\u548c\u53ef\u9760\u673a\u5236\uff0c\u76f4\u63a5\u653e\u5728 IP \u4e0a\u6548\u7387\u66f4\u9ad8\uff0c\u4e0d\u5fc5\u518d\u5957 UDP\/TCP\u3002<\/p>\n\n\n\n<p>BGP \u7528 TCP\uff0c\u662f\u56e0\u4e3a BGP \u5c5e\u4e8e\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u7684\u8def\u7531\u534f\u8bae\uff0c\u8981\u6c42\u9ad8\u53ef\u9760\u3001\u6309\u5e8f\u4f20\u8f93\uff0c\u8def\u7531\u66f4\u65b0\u91cf\u5927\u4e14\u91cd\u8981\uff0c\u4f7f\u7528 TCP \u53ef\u4ee5\u76f4\u63a5\u5229\u7528\u8fde\u63a5\u7ba1\u7406\u3001\u786e\u8ba4\u3001\u91cd\u4f20\u3001\u6d41\u91cf\u63a7\u5236\u7b49\u673a\u5236\u3002<\/p>\n\n\n\n<p>RIP \u5468\u671f\u6027\u548c\u90bb\u7ad9\u4ea4\u6362\u8def\u7531\u4fe1\u606f\uff0c\u800c BGP \u4e0d\u8fd9\u6837\u505a\uff0c\u662f\u56e0\u4e3a\uff1a<br>RIP \u662f\u8ddd\u79bb\u5411\u91cf\u534f\u8bae\uff0c\u9700\u8981\u9760\u5468\u671f\u6027\u4ea4\u6362\u6574\u5f20\u8def\u7531\u8868\u6765\u7ef4\u6301\u4e00\u81f4\u6027\uff1b<br>BGP \u662f\u8def\u5f84\u5411\u91cf\u534f\u8bae\uff0c\u5efa\u7acb TCP \u8fde\u63a5\u540e\uff0c\u5148\u4ea4\u6362\u4e00\u6b21\u5b8c\u6574\u8def\u7531\uff0c\u4ee5\u540e\u53ea\u5728\u8def\u7531\u53d8\u5316\u65f6\u53d1\u9001\u589e\u91cf\u66f4\u65b0\uff0c\u518d\u914d\u5408 Keepalive \u4fdd\u6d3b\uff0c\u4e0d\u9700\u8981\u5468\u671f\u6027\u6574\u8868\u5e7f\u64ad\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u9898\u600e\u4e48\u7ec4\u7ec7\u7b54\u6848<\/h3>\n\n\n\n<p>\u8fd9\u9898\u672c\u8d28\u4e0d\u662f\u95ee\u201c\u8bb0\u5fc6\u70b9\u201d\uff0c\u800c\u662f\u95ee\u201c\u534f\u8bae\u673a\u5236\u4e0e\u5c01\u88c5\u65b9\u5f0f\u662f\u5426\u5339\u914d\u201d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1\uff09RIP \u4e3a\u4ec0\u4e48\u7528 UDP<\/h4>\n\n\n\n<p>RIP \u662f\u5e94\u7528\u5c42\u534f\u8bae\uff0c\u4f46\u5b83\u7684\u5de5\u4f5c\u65b9\u5f0f\u5f88\u201c\u8f7b\u201d\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c\u5b83\u4f20\u8f93\u7684\u5bf9\u8c61\u6bd4\u8f83\u7b80\u5355\uff0c\u5c31\u662f\u8ddd\u79bb\u5411\u91cf\uff1b<br>\u7b2c\u4e8c\uff0c\u5b83\u672c\u6765\u5c31\u4f1a\u5468\u671f\u6027\u53d1\u9001\u66f4\u65b0\u62a5\u6587\uff0c\u6240\u4ee5\u5373\u4fbf\u67d0\u6b21\u4e22\u4e86\uff0c\u4e0b\u4e00\u8f6e\u8fd8\u4f1a\u518d\u53d1\uff1b<br>\u7b2c\u4e09\uff0c\u5b83\u53ea\u548c\u90bb\u5c45\u4ea4\u6362\uff0c\u4e0d\u9700\u8981\u50cf TCP \u90a3\u6837\u5efa\u7acb\u8fde\u63a5\u3001\u7ef4\u62a4\u8fde\u63a5\u72b6\u6001\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u7528 UDP \u7684\u597d\u5904\u5c31\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u65e0\u8fde\u63a5\uff0c\u7b80\u5355\uff1b<\/li>\n\n\n\n<li>\u9996\u90e8\u5f00\u9500\u5c0f\uff1b<\/li>\n\n\n\n<li>\u9002\u5408\u5468\u671f\u6027\u5e7f\u64ad\/\u7ec4\u64ad\u66f4\u65b0\uff1b<\/li>\n\n\n\n<li>\u5b9e\u73b0\u6210\u672c\u4f4e\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u91cc\u7684\u8003\u8bd5\u8868\u8ff0\u901a\u5e38\u53ef\u4ee5\u5199\u6210\uff1a<br>\u201cRIP \u4f7f\u7528 UDP\uff0c\u53ef\u51cf\u5c11\u8fde\u63a5\u5efa\u7acb\u4e0e\u7ef4\u62a4\u5f00\u9500\uff0c\u9002\u5408\u5468\u671f\u6027\u3001\u7b80\u5355\u7684\u8def\u7531\u66f4\u65b0\u62a5\u6587\u4f20\u8f93\u3002\u201d<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2\uff09OSPF \u4e3a\u4ec0\u4e48\u76f4\u63a5\u7528 IP<\/h4>\n\n\n\n<p>OSPF \u4e5f\u662f\u7f51\u7edc\u5c42\u8def\u7531\u534f\u8bae\uff0c\u4f46\u5b83\u4e0d\u50cf RIP \u90a3\u6837\u7b80\u5355\u5468\u671f\u53d1\u8868\uff0c\u800c\u662f\u8981\u505a\u5f88\u591a\u66f4\u5e95\u5c42\u3001\u66f4\u7cbe\u7ec6\u7684\u63a7\u5236\uff1a<\/p>\n\n\n\n<p>\u5b83\u8981\u53d1\u73b0\u90bb\u5c45\u3001\u5efa\u7acb\u90bb\u63a5\u5173\u7cfb\u3001\u53d1\u9001 Hello\u3001\u53d1\u9001\u94fe\u8def\u72b6\u6001\u66f4\u65b0\u3001\u6cdb\u6d2a LSU\/LSA\uff0c\u8fd8\u8981\u81ea\u5df1\u4fdd\u8bc1\u94fe\u8def\u72b6\u6001\u6570\u636e\u5e93\u540c\u6b65\u7684\u4e00\u81f4\u6027\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u518d\u5957\u4e00\u5c42 TCP \u6216 UDP\uff0c\u53cd\u800c\u4e0d\u65b9\u4fbf\u3002\u5c24\u5176\u662f TCP \u7684\u201c\u9762\u5411\u8fde\u63a5\u3001\u7aef\u5230\u7aef\u53ef\u9760\u4f20\u8f93\u201d\u673a\u5236\uff0c\u5e76\u4e0d\u9002\u5408 OSPF \u8fd9\u79cd\u201c\u672c\u5730\u90bb\u63a5\u3001\u94fe\u8def\u72b6\u6001\u6cdb\u6d2a\u201d\u7684\u5de5\u4f5c\u65b9\u5f0f\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5 OSPF \u76f4\u63a5\u5c01\u88c5\u5728 IP \u6570\u636e\u62a5\u4e2d\uff0c\u4f18\u70b9\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5c11\u4e00\u5c42\u5c01\u88c5\uff0c\u6548\u7387\u9ad8\uff1b<\/li>\n\n\n\n<li>\u4fbf\u4e8e\u81ea\u884c\u5b9a\u4e49\u534f\u8bae\u62a5\u6587\u7c7b\u578b\uff1b<\/li>\n\n\n\n<li>\u4fbf\u4e8e\u76f4\u63a5\u63a7\u5236\u6cdb\u6d2a\u4e0e\u90bb\u5c45\u901a\u4fe1\uff1b<\/li>\n\n\n\n<li>\u4e0d\u53d7 TCP \u9762\u5411\u8fde\u63a5\u673a\u5236\u675f\u7f1a\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8003\u8bd5\u91cc\u5e38\u5199\u6210\uff1a<br>\u201cOSPF \u76f4\u63a5\u4f7f\u7528 IP\uff0c\u6709\u5229\u4e8e\u51cf\u5c11\u989d\u5916\u5f00\u9500\uff0c\u5e76\u7531\u534f\u8bae\u81ea\u8eab\u5b9e\u73b0\u90bb\u63a5\u7ef4\u62a4\u548c\u94fe\u8def\u72b6\u6001\u53ef\u9760\u6cdb\u6d2a\u3002\u201d<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3\uff09BGP \u4e3a\u4ec0\u4e48\u7528 TCP<\/h4>\n\n\n\n<p>BGP \u662f\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u7684\u8def\u7531\u534f\u8bae\uff0c\u5b83\u9762\u4e34\u7684\u662f\u5927\u89c4\u6a21\u3001\u590d\u6742\u3001\u91cd\u8981\u7684\u8def\u7531\u4ea4\u6362\uff0c\u4e0d\u80fd\u50cf RIP \u4e00\u6837\u201c\u4e22\u4e86\u4e0b\u6b21\u518d\u8bf4\u201d\u3002<\/p>\n\n\n\n<p>BGP \u9700\u8981\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8def\u7531\u66f4\u65b0\u53ef\u9760\u9001\u8fbe\uff1b<\/li>\n\n\n\n<li>\u8def\u7531\u66f4\u65b0\u6309\u5e8f\u5230\u8fbe\uff1b<\/li>\n\n\n\n<li>\u652f\u6301\u957f\u8fde\u63a5\u4f1a\u8bdd\uff1b<\/li>\n\n\n\n<li>\u51cf\u5c11\u91cd\u590d\u5b9e\u73b0\u91cd\u4f20\u3001\u786e\u8ba4\u7b49\u673a\u5236\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u56e0\u6b64 BGP \u76f4\u63a5\u4f9d\u8d56 TCP\u3002\u8fd9\u6837\u5b83\u4e0d\u9700\u8981\u81ea\u5df1\u518d\u53bb\u9020\u4e00\u5957\u53ef\u9760\u4f20\u8f93\u673a\u5236\u3002<\/p>\n\n\n\n<p>\u8003\u8bd5\u4e2d\u53ef\u4ee5\u5199\uff1a<br>\u201cBGP \u4f7f\u7528 TCP\uff0c\u53ef\u5229\u7528 TCP \u63d0\u4f9b\u7684\u53ef\u9760\u3001\u6309\u5e8f\u3001\u9762\u5411\u8fde\u63a5\u4f20\u8f93\uff0c\u63d0\u9ad8\u57df\u95f4\u8def\u7531\u4ea4\u6362\u7684\u53ef\u9760\u6027\u3002\u201d<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48 RIP \u5468\u671f\u6027\u4ea4\u6362\uff0c\u800c BGP \u4e0d\u8fd9\u6837\u505a<\/h3>\n\n\n\n<p>\u8fd9\u662f\u8fd9\u9898\u6700\u5bb9\u6613\u4e22\u5206\u7684\u70b9\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">RIP \u8981\u5468\u671f\u6027\u4ea4\u6362\u7684\u539f\u56e0<\/h4>\n\n\n\n<p>RIP \u662f\u8ddd\u79bb\u5411\u91cf\u534f\u8bae\u3002\u6bcf\u4e2a\u8def\u7531\u5668\u53ea\u77e5\u9053\u201c\u5230\u67d0\u76ee\u7684\u7f51\u6709\u591a\u8fdc\u3001\u7ecf\u8c01\u8d70\u201d\uff0c\u4e0d\u77e5\u9053\u6574\u4e2a\u62d3\u6251\u3002<br>\u56e0\u6b64\u5b83\u5fc5\u987b\u4e0d\u65ad\u548c\u90bb\u5c45\u4ea4\u6362\u81ea\u5df1\u7684\u8ddd\u79bb\u5411\u91cf\uff0c\u624d\u80fd\u9010\u6b65\u4fee\u6b63\u5168\u7f51\u8def\u7531\u3002<\/p>\n\n\n\n<p>\u800c\u4e14 RIP \u91c7\u7528\u201c\u6574\u8868\u901a\u544a\u201d\u7684\u65b9\u5f0f\uff0c\u672c\u8eab\u5c31\u5e26\u6709\u5468\u671f\u66f4\u65b0\u673a\u5236\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">BGP \u4e0d\u5468\u671f\u6027\u4ea4\u6362\u6574\u5f20\u8868\u7684\u539f\u56e0<\/h4>\n\n\n\n<p>BGP \u4e0d\u662f\u9760\u5468\u671f\u6027\u6574\u8868\u5237\u65b0\u6765\u7ef4\u6301\u8def\u7531\uff0c\u800c\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5148\u5efa\u7acb TCP \u4f1a\u8bdd\uff1b<\/li>\n\n\n\n<li>\u5efa\u7acb\u65f6\u4ea4\u6362\u5168\u90e8\u8def\u7531\uff1b<\/li>\n\n\n\n<li>\u4e4b\u540e\u53ea\u53d1\u9001\u53d8\u5316\u90e8\u5206\uff1b<\/li>\n\n\n\n<li>\u901a\u8fc7 Keepalive \u4fdd\u6301\u90bb\u5c45\u5173\u7cfb\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u6837\u505a\u7684\u539f\u56e0\u662f\uff1a\u4e92\u8054\u7f51\u89c4\u6a21\u592a\u5927\uff0c\u5982\u679c\u50cf RIP \u4e00\u6837\u5468\u671f\u6027\u6574\u8868\u5e7f\u64ad\uff0c\u5f00\u9500\u4f1a\u975e\u5e38\u5927\uff0c\u6548\u7387\u5f88\u4f4e\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u4e00\u53e5\u8bdd\u603b\u7ed3\u5c31\u662f\uff1a<\/p>\n\n\n\n<p>RIP \u9760\u201c\u5468\u671f\u6027\u6574\u8868\u66f4\u65b0\u201d\u7ef4\u6301\u6b63\u786e\u6027\uff1b<br>BGP \u9760\u201cTCP \u957f\u8fde\u63a5 + \u589e\u91cf\u66f4\u65b0 + \u4fdd\u6d3b\u201d\u7ef4\u6301\u6b63\u786e\u6027\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c1\u9898\u6807\u51c6\u5316\u7b54\u6cd5<\/h3>\n\n\n\n<p>\u53ef\u4ee5\u76f4\u63a5\u5199\u6210\u4e0b\u9762\u8fd9\u79cd\u8003\u8bd5\u7b54\u6848\uff1a<\/p>\n\n\n\n<p>RIP \u4f7f\u7528 UDP\uff0c\u4f18\u70b9\u662f\u65e0\u8fde\u63a5\u3001\u5f00\u9500\u5c0f\u3001\u5b9e\u73b0\u7b80\u5355\uff0c\u9002\u5408\u5468\u671f\u6027\u4f20\u8f93\u8def\u7531\u66f4\u65b0\u62a5\u6587\u3002<br>OSPF \u76f4\u63a5\u4f7f\u7528 IP\uff0c\u51cf\u5c11\u4e86\u4f20\u8f93\u5c42\u5c01\u88c5\u5f00\u9500\uff0c\u4fbf\u4e8e\u534f\u8bae\u81ea\u8eab\u5b8c\u6210\u90bb\u5c45\u53d1\u73b0\u3001\u94fe\u8def\u72b6\u6001\u6cdb\u6d2a\u548c\u540c\u6b65\u63a7\u5236\u3002<br>BGP \u4f7f\u7528 TCP\uff0c\u80fd\u591f\u5229\u7528 TCP \u63d0\u4f9b\u7684\u53ef\u9760\u4f20\u8f93\u3001\u6309\u5e8f\u4ea4\u4ed8\u548c\u8fde\u63a5\u7ba1\u7406\u529f\u80fd\uff0c\u9002\u5408\u81ea\u6cbb\u7cfb\u7edf\u95f4\u91cd\u8981\u8def\u7531\u4fe1\u606f\u7684\u4ea4\u6362\u3002<br>RIP \u5468\u671f\u6027\u4e0e\u90bb\u7ad9\u4ea4\u6362\u8def\u7531\u4fe1\u606f\uff0c\u662f\u56e0\u4e3a RIP \u5c5e\u4e8e\u8ddd\u79bb\u5411\u91cf\u534f\u8bae\uff0c\u9700\u8981\u5468\u671f\u6027\u6574\u8868\u66f4\u65b0\u6765\u7ef4\u6301\u8def\u7531\u4e00\u81f4\u6027\uff1b\u800c BGP \u5efa\u7acb TCP \u8fde\u63a5\u540e\uff0c\u901a\u5e38\u53ea\u5728\u8def\u7531\u53d8\u5316\u65f6\u53d1\u9001\u589e\u91cf\u66f4\u65b0\uff0c\u5e76\u901a\u8fc7 Keepalive \u7ef4\u6301\u4f1a\u8bdd\uff0c\u56e0\u6b64\u4e0d\u9700\u8981\u50cf RIP \u90a3\u6837\u5468\u671f\u6027\u4ea4\u6362\u6574\u5f20\u8def\u7531\u8868\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c2\u9898\uff1aRIP \u66f4\u65b0\u540e\u7684 B \u8def\u7531\u8868\u600e\u4e48\u6c42<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u8bfb\u9898\u5e72\u4fe1\u606f<\/h3>\n\n\n\n<p>B \u539f\u8def\u7531\u8868\uff08\u88681\uff09\u662f\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u8ddd\u79bb<\/th><th>\u4e0b\u4e00\u8df3<\/th><\/tr><\/thead><tbody><tr><td>N1<\/td><td>7<\/td><td>A<\/td><\/tr><tr><td>N2<\/td><td>2<\/td><td>C<\/td><\/tr><tr><td>N6<\/td><td>8<\/td><td>F<\/td><\/tr><tr><td>N8<\/td><td>4<\/td><td>E<\/td><\/tr><tr><td>N9<\/td><td>4<\/td><td>D<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>C \u53d1\u7ed9 B \u7684\u8ddd\u79bb\u5411\u91cf\uff08\u88682\uff09\u662f\uff1a<\/p>\n\n\n\n<p>| \u76ee\u7684\u7f51\u7edc | \u8ddd\u79bb |<br>|&#8212;|&#8212;:|&#8212;|<br>| N2 | 15 |<br>| N3 | 2 |<br>| N4 | 8 |<br>| N8 | 2 |<br>| N7 | 4 |<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u5148\u628a C \u7684\u8ddd\u79bb\u7edf\u4e00\u52a0 1<\/h3>\n\n\n\n<p>\u56e0\u4e3a B \u5230\u8fd9\u4e9b\u7f51\u7edc\u8981\u5148\u8d70\u5230\u90bb\u5c45 C\uff0c\u6240\u4ee5 B \u7ecf C \u5230\u5404\u7f51\u7684\u8ddd\u79bb\u5e94\u4e3a\u201cC \u62a5\u7684\u8ddd\u79bb + 1\u201d\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\u5f97\u5230\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u7ecf C \u7684\u65b0\u8ddd\u79bb<\/th><\/tr><\/thead><tbody><tr><td>N2<\/td><td>16<\/td><\/tr><tr><td>N3<\/td><td>3<\/td><\/tr><tr><td>N4<\/td><td>9<\/td><\/tr><tr><td>N8<\/td><td>3<\/td><\/tr><tr><td>N7<\/td><td>5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u8981\u9a6c\u4e0a\u610f\u8bc6\u5230\uff1a<br>\u5728 RIP \u4e2d\uff0c16 \u8868\u793a\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u9010\u9879\u66f4\u65b0 B \u7684\u8def\u7531\u8868<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9 N2<\/h4>\n\n\n\n<p>\u539f\u6765 B \u5230 N2 \u7684\u8868\u9879\u662f\uff1a<code>N2, 2, C<\/code><br>\u73b0\u5728\u6536\u5230\u6765\u81ea C \u7684\u65b0\u4fe1\u606f\uff1a\u7ecf C \u5230 N2 \u7684\u8ddd\u79bb\u53d8\u6210 16\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a\u539f\u6765\u7684\u4e0b\u4e00\u8df3\u672c\u6765\u5c31\u662f C\uff0c\u6240\u4ee5\u8981\u6309\u6765\u81ea\u540c\u4e00\u4e0b\u4e00\u8df3\u7684\u65b0\u4fe1\u606f\u66f4\u65b0\u3002<br>\u56e0\u6b64 N2 \u5e94\u66f4\u65b0\u4e3a\uff1a<\/p>\n\n\n\n<p><code>N2, 16, C<\/code><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u201c\u4e0d\u53ef\u8fbe\u201d\u3002<\/p>\n\n\n\n<p>\u8fd9\u662f\u672c\u9898\u6700\u5927\u9677\u9631\u3002<br>\u5f88\u591a\u4eba\u4f1a\u8bef\u5199\u6210\u201c\u4fdd\u7559\u539f\u6765\u7684 2\u201d\uff0c\u8fd9\u662f\u9519\u7684\u3002RIP \u4e2d\u5982\u679c\u6765\u81ea\u539f\u4e0b\u4e00\u8df3\u7684\u5ea6\u91cf\u53d8\u4e86\uff0c\u5c31\u8981\u8ddf\u7740\u6539\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9 N3<\/h4>\n\n\n\n<p>\u539f\u8868\u6ca1\u6709 N3\uff0c\u65b0\u52a0\u5165\uff1a<\/p>\n\n\n\n<p><code>N3, 3, C<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9 N4<\/h4>\n\n\n\n<p>\u539f\u8868\u6ca1\u6709 N4\uff0c\u65b0\u52a0\u5165\uff1a<\/p>\n\n\n\n<p><code>N4, 9, C<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9 N8<\/h4>\n\n\n\n<p>\u539f\u6765 B \u5230 N8 \u662f\uff1a<code>N8, 4, E<\/code><br>\u73b0\u5728\u7ecf C \u53ef\u8fbe N8 \u7684\u8ddd\u79bb\u662f 3\u3002<\/p>\n\n\n\n<p>\u6bd4\u8f83 3 \u548c 4\uff0c\u9009\u66f4\u5c0f\u7684\uff0c\u56e0\u6b64\u66f4\u65b0\u4e3a\uff1a<\/p>\n\n\n\n<p><code>N8, 3, C<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9 N7<\/h4>\n\n\n\n<p>\u539f\u8868\u6ca1\u6709 N7\uff0c\u65b0\u52a0\u5165\uff1a<\/p>\n\n\n\n<p><code>N7, 5, C<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9 N1\u3001N6\u3001N9<\/h4>\n\n\n\n<p>C \u6ca1\u6709\u63d0\u4f9b\u66f4\u4f18\u8def\u5f84\uff0c\u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6240\u4ee5\uff0cB \u66f4\u65b0\u540e\u7684\u8def\u7531\u8868\u662f<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u8ddd\u79bb<\/th><th>\u4e0b\u4e00\u8df3<\/th><\/tr><\/thead><tbody><tr><td>N1<\/td><td>7<\/td><td>A<\/td><\/tr><tr><td>N2<\/td><td>16<\/td><td>C<\/td><\/tr><tr><td>N3<\/td><td>3<\/td><td>C<\/td><\/tr><tr><td>N4<\/td><td>9<\/td><td>C<\/td><\/tr><tr><td>N6<\/td><td>8<\/td><td>F<\/td><\/tr><tr><td>N7<\/td><td>5<\/td><td>C<\/td><\/tr><tr><td>N8<\/td><td>3<\/td><td>C<\/td><\/tr><tr><td>N9<\/td><td>4<\/td><td>D<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u5982\u679c\u8001\u5e08\u66f4\u503e\u5411\u201c\u4e0d\u53ef\u8fbe\u9879\u5220\u9664\u201d\u7684\u5199\u6cd5\uff0c\u4e5f\u6709\u6559\u6750\u4f1a\u628a N2 \u5220\u9664\u3002<br>\u4f46\u6309 RIP \u673a\u5236\u66f4\u6807\u51c6\u7684\u5199\u6cd5\uff0c\u662f\u5148\u8bb0\u4e3a\u8ddd\u79bb 16\uff0c\u8868\u793a\u4e0d\u53ef\u8fbe\uff1b\u8001\u5316\u540e\u518d\u5220\u9664\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c2\u95ee\uff1aB \u6536\u5230\u53d1\u5f80 N2 \u7684 IP \u5206\u7ec4\u65f6\u600e\u4e48\u5904\u7406<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u66f4\u65b0\u540e B \u5230 N2 \u7684\u8ddd\u79bb\u4e3a 16\uff0c\u5728 RIP \u4e2d\u8868\u793a\u4e0d\u53ef\u8fbe\u3002<br>\u56e0\u6b64 B \u4e0d\u80fd\u7ee7\u7eed\u8f6c\u53d1\u8fd9\u4e2a\u5206\u7ec4\u3002<\/p>\n\n\n\n<p>\u6807\u51c6\u5904\u7406\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e22\u5f03\u8be5 IP \u5206\u7ec4\uff1b<\/li>\n\n\n\n<li>\u5411\u6e90\u4e3b\u673a\u53d1\u9001 ICMP\u201c\u76ee\u7684\u7f51\u7edc\u4e0d\u53ef\u8fbe\u201d\u5dee\u9519\u62a5\u6587\u3002<\/li>\n<\/ol>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c2\u9898\u5b8c\u6574\u7b54\u6848\u5199\u6cd5<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c1\u95ee\u7b54\u6848<\/h4>\n\n\n\n<p>C \u53d1\u6765\u7684\u8ddd\u79bb\u5411\u91cf\u52a0 1 \u540e\uff0cB \u7ecf C \u5230\u5404\u76ee\u7684\u7f51\u7edc\u7684\u8ddd\u79bb\u5206\u522b\u4e3a\uff1a<br>N2 \u4e3a 16\uff0cN3 \u4e3a 3\uff0cN4 \u4e3a 9\uff0cN8 \u4e3a 3\uff0cN7 \u4e3a 5\u3002<\/p>\n\n\n\n<p>\u518d\u4e0e B \u539f\u8def\u7531\u8868\u6bd4\u8f83\u5e76\u66f4\u65b0\uff1a<br>N2 \u539f\u4e0b\u4e00\u8df3\u5c31\u662f C\uff0c\u56e0\u6b64\u66f4\u65b0\u4e3a\u8ddd\u79bb 16\uff1b<br>N3\u3001N4\u3001N7 \u4e3a\u65b0\u589e\u8868\u9879\uff1b<br>N8 \u7ecf C \u7684\u8ddd\u79bb 3 \u5c0f\u4e8e\u539f\u6765\u7684 4\uff0c\u56e0\u6b64\u6539\u4e3a\u7ecf C \u8f6c\u53d1\uff1b<br>N1\u3001N6\u3001N9 \u4fdd\u6301\u4e0d\u53d8\u3002<\/p>\n\n\n\n<p>\u6545\u66f4\u65b0\u540e\u7684\u8def\u7531\u8868\u4e3a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u8ddd\u79bb<\/th><th>\u4e0b\u4e00\u8df3<\/th><\/tr><\/thead><tbody><tr><td>N1<\/td><td>7<\/td><td>A<\/td><\/tr><tr><td>N2<\/td><td>16<\/td><td>C<\/td><\/tr><tr><td>N3<\/td><td>3<\/td><td>C<\/td><\/tr><tr><td>N4<\/td><td>9<\/td><td>C<\/td><\/tr><tr><td>N6<\/td><td>8<\/td><td>F<\/td><\/tr><tr><td>N7<\/td><td>5<\/td><td>C<\/td><\/tr><tr><td>N8<\/td><td>3<\/td><td>C<\/td><\/tr><tr><td>N9<\/td><td>4<\/td><td>D<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c2\u95ee\u7b54\u6848<\/h4>\n\n\n\n<p>B \u6536\u5230\u53d1\u5f80 N2 \u7684 IP \u5206\u7ec4\u65f6\uff0c\u5e94\u53d1\u73b0\u5230 N2 \u7684\u8ddd\u79bb\u4e3a 16\uff0c\u8bf4\u660e\u76ee\u7684\u7f51\u7edc\u4e0d\u53ef\u8fbe\uff0c\u56e0\u6b64\u5e94\u4e22\u5f03\u8be5\u5206\u7ec4\uff0c\u5e76\u53ef\u5411\u6e90\u4e3b\u673a\u53d1\u9001 ICMP \u76ee\u7684\u7f51\u7edc\u4e0d\u53ef\u8fbe\u62a5\u6587\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u7c7b\u9898\u7684\u901a\u7528\u89e3\u6cd5<\/h3>\n\n\n\n<p>RIP \u66f4\u65b0\u9898\u53ef\u4ee5\u56fa\u5b9a\u6309\u56db\u6b65\u8d70\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b65\uff0c\u5148\u628a\u90bb\u5c45\u901a\u544a\u7684\u8ddd\u79bb\u5168\u90e8\u52a0 1\u3002<br>\u7b2c\u4e8c\u6b65\uff0c\u540c\u76ee\u7684\u7f51\u7edc\u82e5\u539f\u4e0b\u4e00\u8df3\u5c31\u662f\u8be5\u90bb\u5c45\uff0c\u5219\u76f4\u63a5\u66f4\u65b0\u3002<br>\u7b2c\u4e09\u6b65\uff0c\u82e5\u539f\u4e0b\u4e00\u8df3\u4e0d\u662f\u8be5\u90bb\u5c45\uff0c\u5219\u6bd4\u8f83\u65b0\u65e7\u8ddd\u79bb\uff0c\u53d6\u66f4\u5c0f\u8005\u3002<br>\u7b2c\u56db\u6b65\uff0c\u65b0\u76ee\u7684\u7f51\u7edc\u76f4\u63a5\u52a0\u5165\uff0c16 \u89c6\u4e3a\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<p>\u771f\u6b63\u6700\u5bb9\u6613\u9519\u7684\u53ea\u6709\u4e00\u4e2a\u70b9\uff1a<\/p>\n\n\n\n<p>\u201c\u6765\u81ea\u539f\u4e0b\u4e00\u8df3\u7684\u65b0\u4fe1\u606f\u53d8\u5dee\u4e86\uff0c\u8981\u4e0d\u8981\u66f4\u65b0\uff1f\u201d<\/p>\n\n\n\n<p>\u7b54\u6848\u662f\uff1a\u8981\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c3\u9898\uff1aOSPF \u4e0b\u6c42 R6 \u5230 N1\u3001N2\u3001N3\u3001N4 \u7684\u8def\u7531\u8868<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u770b\u56fe\u600e\u4e48\u8bfb<\/h3>\n\n\n\n<p>\u9898\u76ee\u8bf4\u660e\u975e\u5e38\u5173\u952e\uff1a<\/p>\n\n\n\n<p>\u201c\u7aef\u53e3\u5904\u7684\u6570\u5b57\u662f\u8be5\u8def\u7531\u5668\u5411\u8be5\u94fe\u8def\u8f6c\u53d1\u5206\u7ec4\u7684\u4ee3\u4ef7\u3002\u201d<\/p>\n\n\n\n<p>\u8fd9\u8bf4\u660e\u8fd9\u662f OSPF \u7684\u201c\u63a5\u53e3\u5f00\u9500\u201d\u6a21\u578b\uff0c\u4e0d\u662f\u7b80\u5355\u628a\u4e00\u6761\u7ebf\u5f53\u6210\u4e00\u4e2a\u56fa\u5b9a\u6743\u503c\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u505a\u9898\u65f6\u8981\u6309\u201c\u4ece\u5f53\u524d\u8def\u7531\u5668\u53d1\u51fa\u65f6\uff0c\u7ecf\u8fc7\u7684\u6bcf\u4e2a\u51fa\u63a5\u53e3\u4ee3\u4ef7\u6c42\u548c\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u627e R6 \u7684\u4e24\u6761\u51fa\u53e3<\/h3>\n\n\n\n<p>R6 \u53ea\u6709\u4e24\u6761\u53ef\u80fd\u7684\u65b9\u5411\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5411\u4e0a\u5230 R5\uff0c\u4ee3\u4ef7 6\uff1b<\/li>\n\n\n\n<li>\u5411\u5de6\u5230 R3\uff0c\u4ee3\u4ef7 6\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4f46\u7ee7\u7eed\u8d70\u4e0b\u53bb\uff0c\u4e24\u6761\u8def\u603b\u4ee3\u4ef7\u4e0d\u540c\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u6c42\u5230 N3 \u7684\u6700\u77ed\u4ee3\u4ef7<\/h3>\n\n\n\n<p>\u4ece R6 \u5230 N3 \u6709\u4e24\u79cd\u4e3b\u8981\u8d70\u6cd5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8d70 R6 \u2192 R3 \u2192 N3<\/h4>\n\n\n\n<p>\u4ee3\u4ef7 = <code>R6\u5230R3<\/code> \u7684 6 + <code>R3\u5230N3<\/code> \u7684 1 = 7<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u8d70 R6 \u2192 R5 \u2192 R4 \u2192 N3<\/h4>\n\n\n\n<p>\u4ee3\u4ef7 = <code>R6\u5230R5<\/code> \u7684 6 + <code>R5\u5230R4<\/code> \u7684 8 + <code>R4\u5230N3<\/code> \u7684 1 = 15<\/p>\n\n\n\n<p>\u6240\u4ee5\u5230 N3 \u7684\u6700\u77ed\u8def\u5f84\u662f\u7ecf R3\uff0c\u603b\u4ee3\u4ef7 7\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u518d\u6c42\u5230 N4<\/h3>\n\n\n\n<p>\u6700\u77ed\u660e\u663e\u662f\uff1a<\/p>\n\n\n\n<p>R6 \u2192 R3 \u2192 N4<\/p>\n\n\n\n<p>\u4ee3\u4ef7 = <code>R6\u5230R3<\/code> \u7684 6 + <code>R3\u5230N4<\/code> \u7684 2 = 8<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u518d\u6c42\u5230 N1<\/h3>\n\n\n\n<p>\u5230 N1 \u6700\u77ed\u8def\u5e94\u8be5\u5148\u5230 N3\uff0c\u518d\u5230 R1\uff0c\u518d\u5230 N1\u3002<\/p>\n\n\n\n<p>\u8def\u5f84\uff1a<\/p>\n\n\n\n<p>R6 \u2192 R3 \u2192 N3 \u2192 R1 \u2192 N1<\/p>\n\n\n\n<p>\u4ee3\u4ef7 = <code>R6\u5230R3<\/code> \u7684 6 + <code>R3\u5230N3<\/code> \u7684 1 + <code>R1\u5230N1<\/code> \u7684 3 = 10<\/p>\n\n\n\n<p>\u8fd9\u91cc N3 \u662f\u4e00\u4e2a\u7f51\u7edc\uff0c\u7f51\u7edc\u5230\u76f8\u8fde\u8def\u7531\u5668\u4e0d\u518d\u989d\u5916\u589e\u52a0\u8f6c\u53d1\u4ee3\u4ef7\uff0c\u6240\u4ee5\u53ea\u52a0\u8def\u7531\u5668\u51fa\u63a5\u53e3\u4ee3\u4ef7\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u53e6\u4e00\u6761\u8def\u5982\u679c\u7ed5 R5\u3001R4 \u518d\u5230 N3\uff0c\u660e\u663e\u66f4\u5927\uff1a<\/p>\n\n\n\n<p>6 + 8 + 1 + 3 = 18<\/p>\n\n\n\n<p>\u6240\u4ee5\u5230 N1 \u8d70 R3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u518d\u6c42\u5230 N2<\/h3>\n\n\n\n<p>\u540c\u7406\uff1a<\/p>\n\n\n\n<p>R6 \u2192 R3 \u2192 N3 \u2192 R2 \u2192 N2<\/p>\n\n\n\n<p>\u4ee3\u4ef7 = <code>R6\u5230R3<\/code> \u7684 6 + <code>R3\u5230N3<\/code> \u7684 1 + <code>R2\u5230N2<\/code> \u7684 3 = 10<\/p>\n\n\n\n<p>\u7ed5 R5\u3001R4 \u4f1a\u66f4\u5927\uff0c\u4e0d\u53d6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6240\u4ee5 R6 \u7684\u8def\u7531\u8868\u4e3a<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u6700\u77ed\u8def\u5f84\u4ee3\u4ef7<\/th><th>\u4e0b\u4e00\u8df3<\/th><\/tr><\/thead><tbody><tr><td>N1<\/td><td>10<\/td><td>R3<\/td><\/tr><tr><td>N2<\/td><td>10<\/td><td>R3<\/td><\/tr><tr><td>N3<\/td><td>7<\/td><td>R3<\/td><\/tr><tr><td>N4<\/td><td>8<\/td><td>R3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5982\u679c\u9898\u76ee\u8981\u6c42\u5199\u201c\u8f93\u51fa\u7ebf\u8def\u201d\uff0c\u672c\u8d28\u4e0a\u4e5f\u662f\u8d70\u5411 R3 \u7684\u90a3\u4e2a\u63a5\u53e3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c3\u9898\u6807\u51c6\u7b54\u6848\u8868\u8ff0<\/h3>\n\n\n\n<p>\u6839\u636e OSPF \u6700\u77ed\u8def\u5f84\u7b97\u6cd5\uff0c\u4ece R6 \u51fa\u53d1\u8ba1\u7b97\u5230\u5404\u7f51\u7edc\u7684\u6700\u5c0f\u4ee3\u4ef7\uff1a<\/p>\n\n\n\n<p>\u5230 N3\uff1aR6\u2192R3\u2192N3\uff0c\u4ee3\u4ef7\u4e3a 6+1=7\uff1b<br>\u5230 N4\uff1aR6\u2192R3\u2192N4\uff0c\u4ee3\u4ef7\u4e3a 6+2=8\uff1b<br>\u5230 N1\uff1aR6\u2192R3\u2192N3\u2192R1\u2192N1\uff0c\u4ee3\u4ef7\u4e3a 6+1+3=10\uff1b<br>\u5230 N2\uff1aR6\u2192R3\u2192N3\u2192R2\u2192N2\uff0c\u4ee3\u4ef7\u4e3a 6+1+3=10\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0cR6 \u5173\u4e8e N1\u3001N2\u3001N3\u3001N4 \u7684\u8def\u7531\u8868\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u4ee3\u4ef7<\/th><th>\u4e0b\u4e00\u8df3<\/th><\/tr><\/thead><tbody><tr><td>N1<\/td><td>10<\/td><td>R3<\/td><\/tr><tr><td>N2<\/td><td>10<\/td><td>R3<\/td><\/tr><tr><td>N3<\/td><td>7<\/td><td>R3<\/td><\/tr><tr><td>N4<\/td><td>8<\/td><td>R3<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u4e09\u9898\u5206\u522b\u8003\u4e86\u4ec0\u4e48\u77e5\u8bc6\u70b9<\/h2>\n\n\n\n<p>\u8fd9\u7ec4\u9898\u5176\u5b9e\u628a\u201c\u7f51\u7edc\u5c42\u8def\u7531\u201d\u91cc\u6700\u6838\u5fc3\u7684\u4e09\u5757\u90fd\u8003\u5230\u4e86\u3002<\/p>\n\n\n\n<p>\u7b2c1\u9898\u8003\u7684\u662f\u4e0d\u540c\u8def\u7531\u534f\u8bae\u7684\u5de5\u4f5c\u5c42\u6b21\u4e0e\u5c01\u88c5\u9009\u62e9\uff1a<br>RIP\u2014UDP\uff0cOSPF\u2014IP\uff0cBGP\u2014TCP\uff0c\u4ee5\u53ca RIP \u4e0e BGP \u66f4\u65b0\u673a\u5236\u7684\u5dee\u5f02\u3002<\/p>\n\n\n\n<p>\u7b2c2\u9898\u8003\u7684\u662f RIP \u7684\u8ddd\u79bb\u5411\u91cf\u66f4\u65b0\u89c4\u5219\uff1a<br>\u90bb\u5c45\u901a\u544a\u52a0 1\u3001\u540c\u4e00\u4e0b\u4e00\u8df3\u66f4\u65b0\u3001\u66f4\u77ed\u8def\u5f84\u66ff\u6362\u300116 \u8868\u793a\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<p>\u7b2c3\u9898\u8003\u7684\u662f OSPF \u7684\u6700\u77ed\u8def\u5f84\u8ba1\u7b97\uff1a<br>\u628a\u63a5\u53e3\u6570\u5b57\u7406\u89e3\u6210\u201c\u51fa\u63a5\u53e3\u4ee3\u4ef7\u201d\uff0c\u518d\u6309\u6700\u77ed\u8def\u5f84\u6c42\u5230\u76ee\u7684\u7f51\u7edc\u7684\u603b\u4ee3\u4ef7\u548c\u4e0b\u4e00\u8df3\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u7ec4\u9898\u6700\u5bb9\u6613\u9519\u7684\u5730\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c1\u9898\u5bb9\u6613\u9519\u5728\u53ea\u80cc\u7ed3\u8bba\uff0c\u4e0d\u8bb2\u201c\u4e3a\u4ec0\u4e48\u201d<\/h3>\n\n\n\n<p>\u6bd4\u5982\u53ea\u5199\u201cRIP \u7528 UDP\uff0cBGP \u7528 TCP\u201d\uff0c\u4f46\u6ca1\u89e3\u91ca\u201cRIP \u5468\u671f\u6574\u8868\u3001BGP \u589e\u91cf\u66f4\u65b0\u201d\uff0c\u5206\u6570\u5c31\u4e0d\u9ad8\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c2\u9898\u5bb9\u6613\u9519\u5728 N2<\/h3>\n\n\n\n<p>\u5f88\u591a\u4eba\u770b\u5230\u539f\u8868\u91cc N2 \u8ddd\u79bb\u662f 2\uff0c\u5c31\u4e0d\u613f\u610f\u6539\u3002<br>\u4f46\u672c\u9898\u6765\u81ea C \u7684\u66f4\u65b0\u544a\u8bc9 B\uff1a\u7ecf C \u53bb N2 \u7684\u4ee3\u4ef7\u5df2\u7ecf\u53d8\u6210 16\u3002<br>\u800c\u539f\u6765 B \u5230 N2 \u7684\u4e0b\u4e00\u8df3\u6b63\u597d\u5c31\u662f C\uff0c\u6240\u4ee5\u5fc5\u987b\u66f4\u65b0\u6210 16\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c3\u9898\u5bb9\u6613\u9519\u5728\u628a\u56fe\u4e0a\u7684\u6570\u5b57\u5f53\u201c\u94fe\u8def\u603b\u6743\u503c\u201d<\/h3>\n\n\n\n<p>\u8fd9\u9053 OSPF \u9898\u56fe\u4e0a\u7684\u6570\u5b57\u662f\u201c\u7aef\u53e3\u4ee3\u4ef7\u201d\uff0c\u4e0d\u662f\u4e00\u6574\u6761\u8fb9\u7684\u7edf\u4e00\u6743\u503c\u3002<br>\u6240\u4ee5\u5fc5\u987b\u6309\u201c\u6cbf\u8def\u7ecf\u8fc7\u7684\u6bcf\u4e2a\u8def\u7531\u5668\u51fa\u63a5\u53e3\u4ee3\u4ef7\u6c42\u548c\u201d\uff0c\u4e0d\u662f\u7b80\u5355\u6570\u8df3\u6570\uff0c\u4e5f\u4e0d\u662f\u53ea\u770b\u67d0\u4e00\u6bb5\u94fe\u8def\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/4-62x1024.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"123\" height=\"2048\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/4-62x1024.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1998\"  sizes=\"auto, (max-width: 123px) 100vw, 123px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/4-1-543x1024.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"543\" height=\"1024\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/4-1-543x1024.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1999\"  sizes=\"auto, (max-width: 543px) 100vw, 543px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u9053 2013 \u7edf\u8003\u9898\uff0c\u672c\u8d28\u4e0a\u662f\u4e00\u4e2a\u5f88\u5178\u578b\u7684\u201c\u8def\u7531\u805a\u5408 + \u6700\u957f\u524d\u7f00\u5339\u914d + \u57df\u95f4\u8def\u7531\u534f\u8bae\u201d\u7efc\u5408\u9898\u3002<br>\u771f\u6b63\u96be\u70b9\u4e0d\u5728\u7b97\uff0c\u800c\u5728\u4e8e\u80fd\u4e0d\u80fd\u4e00\u773c\u770b\u51fa\u4e09\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c\u54ea\u4e9b\u7f51\u6bb5\u53ef\u4ee5\u805a\u5408\uff1b<br>\u7b2c\u4e8c\uff0c\u805a\u5408\u4e4b\u540e\u4f1a\u4e0d\u4f1a\u548c\u76f4\u8fde\u5b50\u7f51\u91cd\u53e0\uff1b<br>\u7b2c\u4e09\uff0c\u91cd\u53e0\u4ee5\u540e\u9760\u4ec0\u4e48\u89c4\u5219\u4fdd\u8bc1\u8f6c\u53d1\u4ecd\u7136\u6b63\u786e\u3002<\/p>\n\n\n\n<p>\u8fd9\u9898\u7684\u6807\u51c6\u601d\u8def\u5982\u4e0b\u3002<\/p>\n\n\n\n<p>\u5148\u770b\u9898\u76ee\u5230\u5e95\u8003\u4ec0\u4e48\u3002<br>R2 \u4f4d\u4e8e AS2 \u4e2d\uff0c\u5b83\u4e00\u8fb9\u901a\u8fc7 S0 \u8fde\u5230 R1\uff0c\u53e6\u4e00\u8fb9\u901a\u8fc7 S1 \u8fde\u5230 R3\uff0c\u81ea\u5df1\u8fd8\u6709\u4e00\u4e2a E0 \u76f4\u8fde\u5b50\u7f51 <code>194.17.20.128\/25<\/code>\u3002<br>\u6240\u4ee5\u5bf9 R2 \u6765\u8bf4\uff0c\u8def\u7531\u6765\u6e90\u5206\u4e09\u7c7b\uff1a<\/p>\n\n\n\n<p>\u4e00\u7c7b\u662f\u7ecf R1 \u5230\u8fbe AS1 \u7684\u4e24\u4e2a\u5b50\u7f51\uff1b<br>\u4e00\u7c7b\u662f\u81ea\u5df1 E0 \u76f4\u8fde\u7684\u5b50\u7f51\uff1b<br>\u4e00\u7c7b\u662f\u7ecf R3 \u5230\u8fbe AS2 \u5185\u53e6\u5916\u4e24\u4e2a\u5b50\u7f51\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 1 \u95ee\uff1a\u7ed9\u51fa R2 \u7684\u8def\u7531\u8868<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u505a\u8def\u7531\u805a\u5408<\/h3>\n\n\n\n<p>AS1 \u4e2d\u4e24\u4e2a\u5b50\u7f51\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>153.14.5.0\/25<\/code><\/li>\n\n\n\n<li><code>153.14.5.128\/25<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e24\u4e2a \/25 \u6b63\u597d\u62fc\u6210\u4e00\u4e2a \/24\uff0c\u6240\u4ee5\u53ef\u4ee5\u805a\u5408\u4e3a\uff1a<\/p>\n\n\n\n<p><code>153.14.5.0\/24<\/code><\/p>\n\n\n\n<p>\u4e0b\u4e00\u8df3\u663e\u7136\u662f R1\uff0c\u56fe\u4e2d\u7ed9\u51fa\u7684 R1 \u63a5\u53e3 IP \u662f <code>153.14.3.2<\/code>\uff0c\u6240\u4ee5\u8fd9\u6761\u8def\u7531\u5199\u6210\uff1a<\/p>\n\n\n\n<p><code>153.14.5.0\/24 -&gt; 153.14.3.2 -&gt; S0<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>AS2 \u4e2d\u7531 R3 \u8fde\u63a5\u7684\u4e24\u4e2a\u5b50\u7f51\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>194.17.20.0\/25<\/code><\/li>\n\n\n\n<li><code>194.17.21.0\/24<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u4e24\u4e2a\u7f51\u6bb5\u53ef\u4ee5\u805a\u5408\u4e3a\uff1a<\/p>\n\n\n\n<p><code>194.17.20.0\/23<\/code><\/p>\n\n\n\n<p>\u8fd9\u91cc\u5f88\u591a\u4eba\u7b2c\u4e00\u6b21\u4f1a\u4e0d\u6562\u5408\u5e76\uff0c\u56e0\u4e3a\u4f1a\u53d1\u73b0 <code>194.17.20.128\/25<\/code> \u4e5f\u843d\u5728\u8fd9\u4e2a \/23 \u8303\u56f4\u91cc\u3002<br>\u4f46\u8fd9\u6070\u6070\u662f\u8fd9\u9898\u7684\u8bbe\u8ba1\u70b9\uff1a<strong>\u53ef\u4ee5\u805a\u5408\uff0c\u91cd\u53e0\u6ca1\u5173\u7cfb\uff0c\u540e\u9762\u9760\u6700\u957f\u524d\u7f00\u5339\u914d\u89e3\u51b3\u3002<\/strong><\/p>\n\n\n\n<p>R3 \u7684\u63a5\u53e3 IP \u7ed9\u7684\u662f <code>194.17.24.2<\/code>\uff0c\u6240\u4ee5\u8fd9\u6761\u805a\u5408\u8def\u7531\u662f\uff1a<\/p>\n\n\n\n<p><code>194.17.20.0\/23 -&gt; 194.17.24.2 -&gt; S1<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>R2 \u81ea\u5df1\u76f4\u8fde\u7684\u5b50\u7f51\u662f\uff1a<\/p>\n\n\n\n<p><code>194.17.20.128\/25<\/code><\/p>\n\n\n\n<p>\u8fd9\u6761\u4e0d\u9700\u8981\u4e0b\u4e00\u8df3\uff0c\u76f4\u63a5\u4ece E0 \u53d1\u51fa\u5373\u53ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u6240\u4ee5\uff0cR2 \u7684\u6700\u7b80\u8def\u7531\u8868\u5e94\u4e3a<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u4e0b\u4e00\u8df3<\/th><th>\u63a5\u53e3<\/th><\/tr><\/thead><tbody><tr><td>153.14.5.0\/24<\/td><td>153.14.3.2<\/td><td>S0<\/td><\/tr><tr><td>194.17.20.128\/25<\/td><td>\u76f4\u63a5\u4ea4\u4ed8<\/td><td>E0<\/td><\/tr><tr><td>194.17.20.0\/23<\/td><td>194.17.24.2<\/td><td>S1<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u201c\u76f4\u63a5\u4ea4\u4ed8\u201d\u4e5f\u53ef\u4ee5\u5199\u6210\u201c-\u201d\u6216\u201c\u76f4\u8fde\u201d\uff0c\u770b\u8001\u5e08\u6216\u9898\u76ee\u4e60\u60ef\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 2 \u95ee\uff1aR2 \u6536\u5230\u76ee\u7684\u5730\u5740\u4e3a 194.17.20.200 \u7684 IP \u5206\u7ec4\uff0c\u7ecf\u54ea\u4e2a\u63a5\u53e3\u8f6c\u53d1\uff1f<\/h2>\n\n\n\n<p>\u5148\u5224\u65ad\u8fd9\u4e2a\u5730\u5740\u5c5e\u4e8e\u54ea\u4e9b\u7f51\u6bb5\u3002<\/p>\n\n\n\n<p><code>194.17.20.200<\/code> \u843d\u5728\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>194.17.20.128\/25<\/code> \u4e2d\uff0c\u56e0\u4e3a\u8fd9\u4e2a \/25 \u7684\u5730\u5740\u8303\u56f4\u662f <code>194.17.20.128 ~ 194.17.20.255<\/code><\/li>\n\n\n\n<li>\u540c\u65f6\u4e5f\u843d\u5728 <code>194.17.20.0\/23<\/code> \u4e2d\uff0c\u56e0\u4e3a \/23 \u7684\u8303\u56f4\u662f <code>194.17.20.0 ~ 194.17.21.255<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e2a\u76ee\u7684\u5730\u5740\u4f1a\u5339\u914d\u4e24\u6761\u8def\u7531\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>194.17.20.128\/25 -> E0<\/code><\/li>\n\n\n\n<li><code>194.17.20.0\/23 -> S1<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u65f6\u4e0d\u80fd\u968f\u4fbf\u9009\uff0c\u800c\u662f\u8981\u6309 <strong>\u6700\u957f\u524d\u7f00\u5339\u914d<\/strong>\u3002<br><code>\/25<\/code> \u6bd4 <code>\/23<\/code> \u66f4\u957f\u3001\u66f4\u5177\u4f53\uff0c\u6240\u4ee5\u4f18\u5148\u9009 <code>\/25<\/code> \u8fd9\u4e00\u6761\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0cR2 \u4f1a\u901a\u8fc7 <strong>E0 \u63a5\u53e3<\/strong> \u8f6c\u53d1\u8be5 IP \u5206\u7ec4\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c 2 \u95ee\u7b54\u6848<\/h3>\n\n\n\n<p>R2 \u901a\u8fc7 <strong>E0<\/strong> \u63a5\u53e3\u8f6c\u53d1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 3 \u95ee\uff1aR1 \u4e0e R2 \u4e4b\u95f4\u5229\u7528\u54ea\u4e2a\u8def\u7531\u534f\u8bae\u4ea4\u6362\u8def\u7531\u4fe1\u606f\uff1f\u8be5\u62a5\u6587\u5c01\u88c5\u5230\u54ea\u4e2a\u534f\u8bae\u7684\u5206\u7ec4\u4e2d\u4f20\u8f93\uff1f<\/h2>\n\n\n\n<p>R1 \u5c5e\u4e8e AS1\uff0cR2 \u5c5e\u4e8e AS2\u3002<br>\u5b83\u4eec\u5904\u5728\u4e24\u4e2a\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\uff0c\u6240\u4ee5\u8fd9\u91cc\u4f7f\u7528\u7684\u662f <strong>BGP<\/strong>\uff0c\u66f4\u51c6\u786e\u5730\u8bf4\u662f <strong>eBGP<\/strong>\u3002<\/p>\n\n\n\n<p>BGP \u7684\u4e00\u4e2a\u5e38\u8003\u70b9\u662f\uff1a<br><strong>BGP \u62a5\u6587\u4e0d\u662f\u76f4\u63a5\u5c01\u88c5\u5230 IP \u6570\u636e\u62a5\u4e2d\uff0c\u800c\u662f\u5148\u5c01\u88c5\u5230 TCP \u62a5\u6587\u6bb5\u4e2d\u4f20\u8f93\u3002<\/strong><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<p>BGP \u62a5\u6587 \u2192 TCP \u62a5\u6587\u6bb5 \u2192 IP \u6570\u636e\u62a5<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c 3 \u95ee\u7b54\u6848<\/h3>\n\n\n\n<p>R1 \u4e0e R2 \u4e4b\u95f4\u4f7f\u7528 <strong>BGP\uff08\u4e25\u683c\u8bf4\u662f eBGP\uff09<\/strong> \u4ea4\u6362\u8def\u7531\u4fe1\u606f\u3002<br>BGP \u62a5\u6587\u5c01\u88c5\u5728 <strong>TCP \u62a5\u6587\u6bb5<\/strong> \u4e2d\u4f20\u8f93\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9053\u9898\u4e3a\u4ec0\u4e48\u5bb9\u6613\u9519<\/h2>\n\n\n\n<p>\u6700\u5bb9\u6613\u9519\u7684\u5730\u65b9\u6709\u4e24\u4e2a\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\u4e2a\u9519\u6cd5\uff0c\u662f\u7b2c 1 \u95ee\u4e0d\u6562\u628a <code>194.17.20.0\/25<\/code> \u548c <code>194.17.21.0\/24<\/code> \u805a\u5408\u6210 <code>194.17.20.0\/23<\/code>\u3002<br>\u539f\u56e0\u662f\u770b\u5230\u5b83\u548c <code>194.17.20.128\/25<\/code> \u6709\u91cd\u53e0\uff0c\u5c31\u4ee5\u4e3a\u4e0d\u80fd\u805a\u5408\u3002\u5b9e\u9645\u4e0a\u53ef\u4ee5\u805a\u5408\uff0c\u53ea\u8981\u4fdd\u7559\u66f4\u5177\u4f53\u7684\u76f4\u8fde\u8def\u7531\u5373\u53ef\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u4e2a\u9519\u6cd5\uff0c\u662f\u7b2c 2 \u95ee\u770b\u5230 <code>194.17.20.200<\/code> \u5c5e\u4e8e <code>194.17.20.0\/23<\/code>\uff0c\u5c31\u76f4\u63a5\u9009 S1\u3002<br>\u8fd9\u8bf4\u660e\u6ca1\u6709\u7528\u6700\u957f\u524d\u7f00\u5339\u914d\u3002\u8003\u8bd5\u91cc\u53ea\u8981\u51fa\u73b0\u201c\u4e00\u4e2a\u5730\u5740\u540c\u65f6\u5339\u914d\u591a\u6761\u8def\u7531\u201d\uff0c\u4f18\u5148\u7ea7\u6c38\u8fdc\u5148\u770b\u63a9\u7801\u957f\u5ea6\uff0c\u63a9\u7801\u957f\u7684\u4f18\u5148\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u7c7b\u9898\u4ee5\u540e\u600e\u4e48\u5feb\u901f\u8bc6\u522b<\/h2>\n\n\n\n<p>\u770b\u5230\u8fd9\u79cd\u9898\uff0c\u5efa\u8bae\u56fa\u5b9a\u6309\u8fd9\u4e2a\u987a\u5e8f\u505a\uff1a<\/p>\n\n\n\n<p>\u5148\u628a\u201c\u76f4\u8fde\u7f51\u6bb5\u201d\u548c\u201c\u7ecf\u90bb\u5c45\u5230\u8fbe\u7684\u7f51\u6bb5\u201d\u5206\u5f00\u3002<br>\u7136\u540e\u53ea\u5bf9\u201c\u540c\u4e00\u65b9\u5411\u3001\u540c\u4e00\u4e0b\u4e00\u8df3\u201d\u7684\u591a\u4e2a\u7f51\u6bb5\u505a\u805a\u5408\u3002<br>\u805a\u5408\u5b8c\u4ee5\u540e\uff0c\u518d\u68c0\u67e5\u662f\u5426\u4e0e\u67d0\u6761\u66f4\u5177\u4f53\u7684\u76f4\u8fde\u8def\u7531\u91cd\u53e0\u3002<br>\u5982\u679c\u91cd\u53e0\uff0c\u4e0d\u5fc5\u614c\uff0c\u53ea\u8981\u4fdd\u7559\u66f4\u5177\u4f53\u8def\u7531\uff0c\u8f6c\u53d1\u65f6\u9760\u6700\u957f\u524d\u7f00\u5339\u914d\u5373\u53ef\u3002<br>\u6700\u540e\u5982\u679c\u9898\u76ee\u95ee\u4e0d\u540c AS \u4e4b\u95f4\u7684\u534f\u8bae\uff0c\u76f4\u63a5\u60f3\u5230 <strong>BGP<\/strong>\uff1b\u5982\u679c\u518d\u95ee\u5c01\u88c5\uff0c\u76f4\u63a5\u60f3\u5230 <strong>TCP<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/5-768x1024.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/5-768x1024.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2001\"  sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/5-1-1024x238.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"238\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/5-1-1024x238.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2002\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">OSPF \u94fe\u8def\u72b6\u6001\u9898\u4e0e\u8def\u7531\u8868\u538b\u7f29\u9898\u89e3\u6790<\/h2>\n\n\n\n<p>\u8fd9\u9053\u9898\u5f88\u6709\u4ee3\u8868\u6027\uff0c\u56e0\u4e3a\u5b83\u4e0d\u662f\u5355\u7eaf\u8003 OSPF \u7684\u5b9a\u4e49\uff0c\u800c\u662f\u628a\u4e09\u4e2a\u5c42\u9762\u7684\u5185\u5bb9\u653e\u5230\u4e86\u4e00\u8d77\uff1a\u5148\u6839\u636e\u94fe\u8def\u72b6\u6001\u4fe1\u606f\u6062\u590d\u62d3\u6251\u5e76\u8ba1\u7b97\u6700\u77ed\u8def\u5f84\uff0c\u518d\u6839\u636e\u6700\u77ed\u8def\u5f84\u586b\u5199\u8def\u7531\u8868\uff0c\u6700\u540e\u518d\u7ed3\u5408\u6700\u957f\u524d\u7f00\u5339\u914d\uff0c\u628a\u8def\u7531\u8868\u538b\u7f29\u5230\u5c3d\u53ef\u80fd\u5c11\u3002\u505a\u8fd9\u7c7b\u9898\u65f6\uff0c\u601d\u8def\u4e00\u5b9a\u4e0d\u80fd\u4e71\uff0c\u5426\u5219\u5f88\u5bb9\u6613\u628a\u201cRouter ID\u201d\u201c\u4e0b\u4e00\u8df3\u5730\u5740\u201d\u201c\u51fa\u53e3\u63a5\u53e3\u201d\u201c\u8def\u5f84\u4ee3\u4ef7\u201d\u8fd9\u4e9b\u6982\u5ff5\u6df7\u5728\u4e00\u8d77\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001\u5148\u628a\u9898\u76ee\u8003\u7684\u6838\u5fc3\u6293\u51fa\u6765<\/h3>\n\n\n\n<p>\u8fd9\u9053\u9898\u672c\u8d28\u4e0a\u8003\u4e86\u56db\u4ef6\u4e8b\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\u662f OSPF \u7684\u6700\u77ed\u8def\u5f84\u8ba1\u7b97\u3002\u4e5f\u5c31\u662f\u6839\u636e\u5404\u94fe\u8def\u7684 Metric\uff0c\u786e\u5b9a\u4ece R1 \u5230\u5404\u76ee\u7684\u7f51\u7edc\u5e94\u8be5\u8d70\u54ea\u6761\u8def\u5f84\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u662f\u8def\u7531\u8868\u9879\u7684\u542b\u4e49\u3002\u8def\u7531\u8868\u91cc\u5199\u7684\u4e0d\u662f\u6574\u6761\u8def\u5f84\uff0c\u800c\u662f\u201c\u76ee\u7684\u7f51\u7edc\u3001\u4e0b\u4e00\u8df3\u3001\u51fa\u53e3\u63a5\u53e3\u201d\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e09\u662f\u8def\u7531\u805a\u5408\u4e0e\u6700\u957f\u524d\u7f00\u5339\u914d\u3002\u9898\u76ee\u8981\u6c42\u201c\u8def\u7531\u9879\u5c3d\u53ef\u80fd\u5c11\u201d\uff0c\u8fd9\u5c31\u4e0d\u662f\u673a\u68b0\u5730\u628a\u6bcf\u4e2a\u5b50\u7f51\u5199\u4e00\u6761\uff0c\u800c\u662f\u8981\u770b\u54ea\u4e9b\u8def\u7531\u80fd\u5408\u5e76\u3002<\/p>\n\n\n\n<p>\u7b2c\u56db\u662f TTL \u7684\u53d8\u5316\u89c4\u5f8b\u3002IP \u5206\u7ec4\u6bcf\u7ecf\u8fc7\u4e00\u4e2a\u8def\u7531\u5668\uff0cTTL \u51cf 1\uff0c\u5230\u4e3b\u673a\u65f6\u4e0d\u518d\u51cf\u5c11\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e00\u9898\u4e4b\u6240\u4ee5\u5bb9\u6613\u51fa\u9519\uff0c\u5c31\u662f\u56e0\u4e3a\u5f88\u591a\u4eba\u628a\u201c\u5148\u6c42\u6700\u77ed\u8def\u201d\u548c\u201c\u518d\u538b\u7f29\u8def\u7531\u8868\u201d\u8fd9\u4e24\u4e2a\u9636\u6bb5\u6df7\u4e3a\u4e00\u8c08\u3002\u5b9e\u9645\u4e0a\uff0c\u5fc5\u987b\u5148\u628a\u6bcf\u4e2a\u5b50\u7f51\u5404\u81ea\u7684\u6700\u4f18\u8def\u5f84\u7b97\u5bf9\uff0c\u4e4b\u540e\u624d\u8c08\u5f97\u4e0a\u5408\u5e76\u8def\u7531\u9879\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001\u6839\u636e\u9898\u56fe\u5148\u6062\u590d R1 \u5230\u5404\u5b50\u7f51\u7684\u6700\u77ed\u8def\u5f84<\/h3>\n\n\n\n<p>\u4ece\u56fe\u4e2d\u53ef\u4ee5\u8bfb\u51fa\u5982\u4e0b\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>R1 \u76f4\u8fde <code>192.1.1.0\/24<\/code>\uff0c\u63a5\u53e3\u662f <code>E0<\/code>\uff0c\u4ee3\u4ef7\u4e3a 1\u3002<br>R1 \u5230 R2 \u7684\u94fe\u8def\u4ee3\u4ef7\u4e3a 3\uff0cR1 \u8fd9\u4fa7\u63a5\u53e3\u662f <code>L0<\/code>\uff0cR2 \u5bf9\u7aef\u5730\u5740\u662f <code>10.1.1.2<\/code>\u3002<br>R1 \u5230 R3 \u7684\u94fe\u8def\u4ee3\u4ef7\u4e3a 2\uff0cR1 \u8fd9\u4fa7\u63a5\u53e3\u662f <code>L1<\/code>\uff0cR3 \u5bf9\u7aef\u5730\u5740\u662f <code>10.1.1.10<\/code>\u3002<br>R2 \u76f4\u8fde <code>192.1.6.0\/24<\/code>\uff0c\u4ee3\u4ef7\u4e3a 1\u3002<br>R3 \u76f4\u8fde <code>192.1.5.0\/24<\/code>\uff0c\u4ee3\u4ef7\u4e3a 1\u3002<br>R4 \u76f4\u8fde <code>192.1.7.0\/24<\/code>\uff0c\u4ee3\u4ef7\u4e3a 1\u3002<br>R2 \u5230 R4 \u7684\u94fe\u8def\u4ee3\u4ef7\u4e3a 4\u3002<br>R3 \u5230 R4 \u7684\u94fe\u8def\u4ee3\u4ef7\u4e3a 6\u3002<\/p>\n\n\n\n<p>\u73b0\u5728\u4ece R1 \u51fa\u53d1\uff0c\u5206\u522b\u6c42\u5230\u5404\u4e2a <code>192.1.x.0\/24<\/code> \u5b50\u7f51\u7684\u6700\u77ed\u4ee3\u4ef7\u3002<\/p>\n\n\n\n<p>\u5230 <code>192.1.1.0\/24<\/code>\uff1a\u8fd9\u662f R1 \u81ea\u5df1\u76f4\u8fde\u7f51\u7edc\uff0c\u6240\u4ee5\u603b\u4ee3\u4ef7\u5c31\u662f 1\u3002<\/p>\n\n\n\n<p>\u5230 <code>192.1.5.0\/24<\/code>\uff1a\u6700\u660e\u663e\u7684\u8def\u5f84\u662f <code>R1 \u2192 R3 \u2192 192.1.5.0\/24<\/code>\uff0c\u603b\u4ee3\u4ef7\u4e3a\uff1a<\/p>\n\n\n\n<p><code>2 + 1 = 3<\/code><\/p>\n\n\n\n<p>\u5230 <code>192.1.6.0\/24<\/code>\uff1a\u8def\u5f84\u4e3a <code>R1 \u2192 R2 \u2192 192.1.6.0\/24<\/code>\uff0c\u603b\u4ee3\u4ef7\u4e3a\uff1a<\/p>\n\n\n\n<p><code>3 + 1 = 4<\/code><\/p>\n\n\n\n<p>\u5230 <code>192.1.7.0\/24<\/code>\uff1a\u8fd9\u91cc\u6709\u4e24\u79cd\u5019\u9009\u8def\u5f84\u3002<\/p>\n\n\n\n<p>\u8def\u5f84 1\uff1a<code>R1 \u2192 R2 \u2192 R4 \u2192 192.1.7.0\/24<\/code><br>\u603b\u4ee3\u4ef7\uff1a<\/p>\n\n\n\n<p><code>3 + 4 + 1 = 8<\/code><\/p>\n\n\n\n<p>\u8def\u5f84 2\uff1a<code>R1 \u2192 R3 \u2192 R4 \u2192 192.1.7.0\/24<\/code><br>\u603b\u4ee3\u4ef7\uff1a<\/p>\n\n\n\n<p><code>2 + 6 + 1 = 9<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u5e94\u8be5\u9009\u8def\u5f84 1\uff0c\u4e5f\u5c31\u662f\u7ecf\u8fc7 R2 \u518d\u5230 R4\u3002<\/p>\n\n\n\n<p>\u8fd9\u6837\uff0cR1 \u5230\u5404\u5b50\u7f51\u7684\u6700\u77ed\u8def\u5f84\u7ed3\u679c\u5c31\u51fa\u6765\u4e86\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u6700\u77ed\u8def\u5f84<\/th><th>\u4ee3\u4ef7<\/th><\/tr><\/thead><tbody><tr><td>192.1.1.0\/24<\/td><td>R1 \u76f4\u8fde<\/td><td>1<\/td><\/tr><tr><td>192.1.5.0\/24<\/td><td>R1 \u2192 R3 \u2192 192.1.5.0\/24<\/td><td>3<\/td><\/tr><tr><td>192.1.6.0\/24<\/td><td>R1 \u2192 R2 \u2192 192.1.6.0\/24<\/td><td>4<\/td><\/tr><tr><td>192.1.7.0\/24<\/td><td>R1 \u2192 R2 \u2192 R4 \u2192 192.1.7.0\/24<\/td><td>8<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001\u7531\u6700\u77ed\u8def\u5f84\u8f6c\u6210 R1 \u7684\u8def\u7531\u8868\u9879<\/h3>\n\n\n\n<p>\u8fd9\u4e00\u6b65\u662f\u5f88\u591a\u4eba\u6700\u5bb9\u6613\u5199\u9519\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<p>\u8def\u7531\u8868\u9879\u5199\u7684\u662f\u201c\u53bb\u67d0\u4e2a\u76ee\u7684\u7f51\u7edc\u65f6\uff0c\u6211\u4e0b\u4e00\u6b65\u628a\u5206\u7ec4\u4ea4\u7ed9\u8c01\uff0c\u4ece\u54ea\u4e2a\u63a5\u53e3\u9001\u51fa\u53bb\u201d\u3002\u6240\u4ee5\u8981\u7279\u522b\u533a\u5206\u4e09\u4ef6\u4e1c\u897f\uff1a<\/p>\n\n\n\n<p><code>Router ID<\/code> \u4e0d\u662f\u4e0b\u4e00\u8df3\u5730\u5740\u3002<br>\u4e0b\u4e00\u8df3\u901a\u5e38\u5199\u76f8\u90bb\u8def\u7531\u5668\u5728\u8be5\u94fe\u8def\u4e0a\u7684\u63a5\u53e3 IP\u3002<br>\u63a5\u53e3\u5199\u7684\u662f\u672c\u8def\u7531\u5668\u81ea\u5df1\u7684\u8f93\u51fa\u63a5\u53e3\uff0c\u4e0d\u662f\u5bf9\u7aef\u7684\u63a5\u53e3\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff1a<\/p>\n\n\n\n<p>\u53bb <code>192.1.1.0\/24<\/code> \u65f6\uff0c\u56e0\u4e3a\u5b83\u662f\u76f4\u8fde\u7f51\u7edc\uff0c\u6240\u4ee5\u53ef\u4ee5\u5199\u201c\u76f4\u8fde\u201d\uff0c\u63a5\u53e3\u4e3a <code>E0<\/code>\u3002<\/p>\n\n\n\n<p>\u53bb <code>192.1.5.0\/24<\/code> \u65f6\uff0cR1 \u7684\u4e0b\u4e00\u8df3\u662f R3\u3002R3 \u5728\u8fd9\u6761\u94fe\u8def\u4e0a\u7684\u63a5\u53e3\u5730\u5740\u662f <code>10.1.1.10<\/code>\uff0cR1 \u81ea\u5df1\u53d1\u51fa\u53bb\u7684\u63a5\u53e3\u662f <code>L1<\/code>\u3002<\/p>\n\n\n\n<p>\u53bb <code>192.1.6.0\/24<\/code> \u65f6\uff0cR1 \u7684\u4e0b\u4e00\u8df3\u662f R2\u3002R2 \u5728\u8fd9\u6761\u94fe\u8def\u4e0a\u7684\u63a5\u53e3\u5730\u5740\u662f <code>10.1.1.2<\/code>\uff0cR1 \u7684\u8f93\u51fa\u63a5\u53e3\u662f <code>L0<\/code>\u3002<\/p>\n\n\n\n<p>\u53bb <code>192.1.7.0\/24<\/code> \u65f6\uff0c\u867d\u7136\u6700\u7ec8\u8981\u7ecf\u8fc7 R4\uff0c\u4f46\u5bf9 R1 \u6765\u8bf4\uff0c\u4e0b\u4e00\u8df3\u4ecd\u7136\u53ea\u662f R2\uff0c\u6240\u4ee5\u4e0b\u4e00\u8df3\u4f9d\u65e7\u662f <code>10.1.1.2<\/code>\uff0c\u63a5\u53e3\u4f9d\u65e7\u662f <code>L0<\/code>\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0c\u4e0d\u505a\u538b\u7f29\u65f6\uff0cR1 \u7684\u8def\u7531\u8868\u5e94\u4e3a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u4e0b\u4e00\u8df3<\/th><th>\u63a5\u53e3<\/th><\/tr><\/thead><tbody><tr><td>192.1.1.0\/24<\/td><td>\u76f4\u8fde<\/td><td>E0<\/td><\/tr><tr><td>192.1.5.0\/24<\/td><td>10.1.1.10<\/td><td>L1<\/td><\/tr><tr><td>192.1.6.0\/24<\/td><td>10.1.1.2<\/td><td>L0<\/td><\/tr><tr><td>192.1.7.0\/24<\/td><td>10.1.1.2<\/td><td>L0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u56db\u3001\u4e3a\u4ec0\u4e48\u8fd8\u80fd\u7ee7\u7eed\u538b\u7f29\u8def\u7531\u8868<\/h3>\n\n\n\n<p>\u9898\u76ee\u660e\u786e\u8bf4\u201c\u8def\u7531\u8868\u4e2d\u7684\u8def\u7531\u9879\u5c3d\u53ef\u80fd\u5c11\u201d\uff0c\u8fd9\u8bf4\u660e\u4e0d\u80fd\u505c\u5728\u4e0a\u9762\u8fd9 4 \u9879\uff0c\u8fd8\u5f97\u7ee7\u7eed\u770b\u80fd\u4e0d\u80fd\u805a\u5408\u3002<\/p>\n\n\n\n<p>\u8fd9\u65f6\u5019\u8981\u68c0\u67e5\u7684\u4e0d\u662f\u201c\u5730\u5740\u50cf\u4e0d\u50cf\u201d\uff0c\u800c\u662f\u4e24\u4e2a\u6761\u4ef6\u662f\u5426\u540c\u65f6\u6ee1\u8db3\uff1a<\/p>\n\n\n\n<p>\u540c\u4e00\u7ec4\u76ee\u7684\u7f51\u7edc\u662f\u5426\u80fd\u7528\u4e00\u4e2a\u66f4\u5927\u7684\u524d\u7f00\u8868\u793a\uff1b<br>\u8fd9\u4e9b\u7f51\u7edc\u7684\u4e0b\u4e00\u8df3\u548c\u51fa\u53e3\u63a5\u53e3\u662f\u5426\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n\n\n\n<p>\u89c2\u5bdf <code>192.1.6.0\/24<\/code> \u548c <code>192.1.7.0\/24<\/code>\uff1a<\/p>\n\n\n\n<p>\u5b83\u4eec\u5730\u5740\u8fde\u7eed\u3002<br>\u5b83\u4eec\u7684\u4e0b\u4e00\u8df3\u90fd\u4e3a <code>10.1.1.2<\/code>\u3002<br>\u5b83\u4eec\u7684\u8f93\u51fa\u63a5\u53e3\u90fd\u4e3a <code>L0<\/code>\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u4e24\u9879\u53ef\u4ee5\u805a\u5408\u6210\u4e00\u9879\uff1a<\/p>\n\n\n\n<p><code>192.1.6.0\/23<\/code><\/p>\n\n\n\n<p>\u56e0\u4e3a <code>\/23<\/code> \u7684\u8986\u76d6\u8303\u56f4\u6b63\u597d\u662f\uff1a<\/p>\n\n\n\n<p><code>192.1.6.0 ~ 192.1.7.255<\/code><\/p>\n\n\n\n<p>\u8fd9\u5c31\u521a\u597d\u628a <code>192.1.6.0\/24<\/code> \u548c <code>192.1.7.0\/24<\/code> \u4e24\u4e2a\u7f51\u6bb5\u90fd\u5305\u542b\u8fdb\u6765\u4e86\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u538b\u7f29\u540e\u7684\u6700\u7b80\u8def\u7531\u8868\u4e3a\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u4e0b\u4e00\u8df3<\/th><th>\u63a5\u53e3<\/th><\/tr><\/thead><tbody><tr><td>192.1.1.0\/24<\/td><td>\u76f4\u8fde<\/td><td>E0<\/td><\/tr><tr><td>192.1.5.0\/24<\/td><td>10.1.1.10<\/td><td>L1<\/td><\/tr><tr><td>192.1.6.0\/23<\/td><td>10.1.1.2<\/td><td>L0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u5c31\u662f\u8fd9\u9053\u9898\u7b2c 1 \u95ee\u6700\u7a33\u59a5\u3001\u6700\u81ea\u7136\u7684\u7b54\u6848\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e94\u3001\u7b2c\u4e8c\u95ee\u4e3a\u4ec0\u4e48\u662f\u4ece L0 \u8f6c\u53d1\uff0cTTL \u4e3a\u4ec0\u4e48\u662f 61<\/h3>\n\n\n\n<p>\u9898\u76ee\u8bf4\uff0c\u4e3b\u673a <code>192.1.1.130<\/code> \u5411\u4e3b\u673a <code>192.1.7.211<\/code> \u53d1\u9001\u4e00\u4e2a <code>TTL = 64<\/code> \u7684 IP \u5206\u7ec4\u3002<\/p>\n\n\n\n<p>\u5148\u770b\u76ee\u7684\u5730\u5740 <code>192.1.7.211<\/code> \u4f1a\u5339\u914d\u54ea\u6761\u8def\u7531\u3002<\/p>\n\n\n\n<p>\u5728 R1 \u7684\u6700\u7b80\u8def\u7531\u8868\u4e2d\uff1a<\/p>\n\n\n\n<p><code>192.1.1.0\/24<\/code> \u663e\u7136\u4e0d\u5339\u914d\u3002<br><code>192.1.5.0\/24<\/code> \u4e5f\u4e0d\u5339\u914d\u3002<br><code>192.1.6.0\/23<\/code> \u7684\u8986\u76d6\u8303\u56f4\u662f <code>192.1.6.0 ~ 192.1.7.255<\/code>\uff0c\u6240\u4ee5 <code>192.1.7.211<\/code> \u843d\u5728\u8fd9\u4e2a\u8303\u56f4\u91cc\u3002<\/p>\n\n\n\n<p>\u56e0\u6b64\uff0cR1 \u4e00\u5b9a\u4f1a\u6309\u7167\u8fd9\u6761\u805a\u5408\u8def\u7531\u8f6c\u53d1\uff0c\u4e5f\u5c31\u662f\uff1a<\/p>\n\n\n\n<p>\u4e0b\u4e00\u8df3\u662f <code>10.1.1.2<\/code>\uff0c\u63a5\u53e3\u662f <code>L0<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c 2 \u95ee\u524d\u534a\u95ee\u7684\u7b54\u6848\u662f\uff1aR1 \u901a\u8fc7 <code>L0<\/code> \u63a5\u53e3\u8f6c\u53d1\u8be5 IP \u5206\u7ec4\u3002<\/p>\n\n\n\n<p>\u63a5\u7740\u770b TTL\u3002<\/p>\n\n\n\n<p>TTL \u7684\u89c4\u5219\u975e\u5e38\u673a\u68b0\uff1a\u6bcf\u7ecf\u8fc7\u4e00\u4e2a\u8def\u7531\u5668\uff0cTTL \u51cf 1\u3002\u4e3b\u673a\u53d1\u9001\u65f6\u4e0d\u51cf\uff0c\u4e3b\u673a\u63a5\u6536\u65f6\u4e5f\u4e0d\u4f1a\u518d\u51cf\u3002<\/p>\n\n\n\n<p>\u8be5\u5206\u7ec4\u5b9e\u9645\u7ecf\u8fc7\u7684\u8def\u7531\u5668\u662f\uff1a<\/p>\n\n\n\n<p><code>R1 \u2192 R2 \u2192 R4<\/code><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u4e00\u5171\u7ecf\u8fc7 3 \u4e2a\u8def\u7531\u5668\uff0c\u6240\u4ee5 TTL \u7684\u53d8\u5316\u8fc7\u7a0b\u4e3a\uff1a<\/p>\n\n\n\n<p><code>64 \u2192 63 \u2192 62 \u2192 61<\/code><\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u4e3b\u673a <code>192.1.7.211<\/code> \u6536\u5230\u8be5\u5206\u7ec4\u65f6\uff0cTTL \u662f <code>61<\/code>\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e00\u95ee\u7279\u522b\u5bb9\u6613\u9519\u6210 <code>62<\/code>\uff0c\u539f\u56e0\u901a\u5e38\u662f\u5c11\u7b97\u4e86\u4e00\u4e2a\u8def\u7531\u5668\u3002\u5f88\u591a\u4eba\u4e0b\u610f\u8bc6\u53ea\u7b97\u4e2d\u95f4\u8f6c\u53d1\u7684\u4e24\u4e2a\u8def\u7531\u5668 R2\u3001R4\uff0c\u5374\u5fd8\u4e86 R1 \u81ea\u5df1\u4e5f\u662f\u4e00\u4e2a\u8f6c\u53d1\u8def\u7531\u5668\u3002\u53ea\u8981 IP \u5206\u7ec4\u8fdb\u5165 R1 \u5e76\u7531 R1 \u8f6c\u53d1\u51fa\u53bb\uff0cR1 \u5c31\u5df2\u7ecf\u4f1a\u8ba9 TTL \u51cf 1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u516d\u3001\u7b2c\u4e09\u95ee\u672c\u8d28\u4e0a\u662f\u5728\u8003\u9ed8\u8ba4\u8def\u7531\u7684\u53d1\u5e03<\/h3>\n\n\n\n<p>\u9898\u76ee\u6700\u540e\u95ee\uff1a\u5982\u679c R1 \u589e\u52a0\u4e00\u6761 Metric \u4e3a 10 \u7684\u94fe\u8def\u8fde\u63a5 Internet\uff0c\u90a3\u4e48 R1 \u7684 LSI \u9700\u8981\u589e\u52a0\u54ea\u4e9b\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u8fd9\u9053\u9898\u5728\u8003\u7814\u8bed\u5883\u4e0b\uff0c\u4e0d\u5fc5\u5f80\u771f\u5b9e OSPF \u534f\u8bae\u7684\u5404\u79cd LSA \u7c7b\u578b\u4e0a\u94bb\u5f97\u592a\u6df1\uff0c\u5148\u6293\u4f4f\u672c\u8d28\uff1aR1 \u73b0\u5728\u53d8\u6210\u4e86\u4e00\u4e2a\u80fd\u5230\u8fbe\u5916\u90e8\u7f51\u7edc\u7684\u51fa\u53e3\u8def\u7531\u5668\uff0c\u6240\u4ee5\u5b83\u5e94\u8be5\u5411\u5176\u4ed6\u8def\u7531\u5668\u8868\u660e\u201c\u6211\u8fd9\u91cc\u53ef\u4ee5\u901a\u5411 Internet\u201d\u3002<\/p>\n\n\n\n<p>\u5728\u8def\u7531\u8868\u5c42\u9762\uff0c\u8fd9\u4e2a\u4fe1\u606f\u6700\u5178\u578b\u7684\u8868\u8fbe\u65b9\u5f0f\u5c31\u662f\u9ed8\u8ba4\u8def\u7531\uff1a<\/p>\n\n\n\n<p><code>0.0.0.0\/0<\/code><\/p>\n\n\n\n<p>\u56e0\u6b64\uff0c\u5728\u9898\u76ee\u8fd9\u4e2a\u7b80\u5316\u7684 LSI \u8868\u8fbe\u65b9\u5f0f\u4e0b\uff0c\u6838\u5fc3\u65b0\u589e\u4fe1\u606f\u5e94\u5f53\u662f\uff1a<\/p>\n\n\n\n<p><code>Prefix = 0.0.0.0\/0<\/code><br><code>Metric = 10<\/code><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u8981\u589e\u52a0\u4e00\u6761\u8868\u793a\u201c\u53ef\u5230\u8fbe\u9ed8\u8ba4\u7f51\u7edc\u201d\u7684\u8bb0\u5f55\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u628a\u9898\u76ee\u7406\u89e3\u5f97\u66f4\u7ec6\u4e00\u70b9\uff0c\u56e0\u4e3a\u65b0\u589e\u7684\u662f\u201c\u4e00\u6761\u94fe\u8def\u201d\uff0c\u90a3\u4e48\u8fd8\u53ef\u4ee5\u8865\u5145\u7406\u89e3\u4e3a\uff1aR1 \u8fd8\u4f1a\u591a\u4e00\u6761\u65b0\u7684\u5916\u8fde\u94fe\u8def\u4fe1\u606f\uff0c\u5305\u62ec\u8fd9\u6761\u94fe\u8def\u4e0a\u7684\u672c\u5730 IP \u5730\u5740\uff0c\u4ee5\u53ca\u8be5\u94fe\u8def\u7684 Metric \u4e3a 10\u3002\u4f46\u5728\u9898\u76ee\u8fd9\u79cd\u8868\u683c\u7ed3\u6784\u548c\u5f97\u5206\u903b\u8f91\u4e0b\uff0c\u771f\u6b63\u5173\u952e\u7684\u5f97\u5206\u70b9\u4ecd\u7136\u662f\u8fd9\u6761\u9ed8\u8ba4\u524d\u7f00\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c 3 \u95ee\u5199\u6210\u4e0b\u9762\u8fd9\u6837\u6700\u7a33\uff1a<\/p>\n\n\n\n<p>\u65b0\u589e\u4e00\u6761\u5230 Internet \u7684\u9ed8\u8ba4\u8def\u7531\u4fe1\u606f\uff1a<br><code>Prefix = 0.0.0.0\/0<\/code>\uff0c<code>Metric = 10<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e03\u3001\u8fd9\u7c7b\u9898\u4ee5\u540e\u600e\u4e48\u5feb\u901f\u505a<\/h3>\n\n\n\n<p>\u628a\u8fd9\u9053\u9898\u62bd\u8c61\u4e00\u4e0b\uff0c\u4eca\u540e\u9047\u5230\u7c7b\u4f3c\u9898\u76ee\uff0c\u57fa\u672c\u90fd\u53ef\u4ee5\u6309\u8fd9\u4e2a\u6a21\u677f\u505a\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u5148\u7b97\u201c\u5230\u6bcf\u4e2a\u76ee\u7684\u7f51\u7edc\u201d\u7684\u6700\u77ed\u8def<\/h4>\n\n\n\n<p>\u6ce8\u610f\u4e0d\u662f\u5148\u5199\u8def\u7531\u8868\uff0c\u800c\u662f\u5148\u628a\u6bcf\u4e2a\u7f51\u7edc\u7684\u6700\u4f18\u8def\u5f84\u548c\u603b\u4ee3\u4ef7\u7b97\u51fa\u6765\u3002<br>\u8fd9\u4e00\u6b65\u5982\u679c\u9519\u4e86\uff0c\u540e\u9762\u6240\u6709\u4e0b\u4e00\u8df3\u3001\u63a5\u53e3\u3001TTL \u90fd\u4f1a\u8ddf\u7740\u9519\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u518d\u628a\u6700\u77ed\u8def\u7ffb\u8bd1\u6210\u8def\u7531\u8868\u9879<\/h4>\n\n\n\n<p>\u7ffb\u8bd1\u65f6\u56fa\u5b9a\u95ee\u81ea\u5df1\u4e09\u4e2a\u95ee\u9898\uff1a<\/p>\n\n\n\n<p>\u8fd9\u4e2a\u76ee\u7684\u7f51\u7edc\u662f\u4ec0\u4e48\uff1f<br>\u6211\u7684\u7b2c\u4e00\u8df3\u4ea4\u7ed9\u8c01\uff1f<br>\u6211\u662f\u4ece\u81ea\u5df1\u7684\u54ea\u4e2a\u63a5\u53e3\u53d1\u51fa\u53bb\uff1f<\/p>\n\n\n\n<p>\u53ea\u8981\u628a\u201c\u4e0b\u4e00\u8df3\u201d\u548c\u201c\u51fa\u53e3\u63a5\u53e3\u201d\u5206\u6e05\uff0c\u8def\u7531\u8868\u5c31\u4e0d\u4f1a\u4e71\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u518d\u68c0\u67e5\u80fd\u4e0d\u80fd\u805a\u5408<\/h4>\n\n\n\n<p>\u805a\u5408\u5fc5\u987b\u540c\u65f6\u6ee1\u8db3\u4e24\u4e2a\u6761\u4ef6\uff1a<\/p>\n\n\n\n<p>\u5730\u5740\u524d\u7f00\u4e0a\u53ef\u5408\u5e76\uff1b<br>\u4e0b\u4e00\u8df3\u76f8\u540c\uff0c\u63a5\u53e3\u4e5f\u76f8\u540c\u3002<\/p>\n\n\n\n<p>\u53ea\u770b\u5730\u5740\u8fde\u7eed\u800c\u5ffd\u7565\u4e0b\u4e00\u8df3\u662f\u5426\u4e00\u81f4\uff0c\u662f\u8fd9\u7c7b\u9898\u6700\u5e38\u89c1\u7684\u9677\u9631\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. TTL \u53ea\u6309\u201c\u7ecf\u8fc7\u51e0\u4e2a\u8def\u7531\u5668\u201d\u6765\u51cf<\/h4>\n\n\n\n<p>\u6bcf\u8fc7\u4e00\u4e2a\u8def\u7531\u5668\uff0c\u51cf 1\u3002<br>\u4e3b\u673a\u4e0d\u53c2\u4e0e\u51cf TTL\u3002<br>\u4e0d\u8981\u5c11\u7b97\u7b2c\u4e00\u53f0\u8def\u7531\u5668\uff0c\u4e5f\u4e0d\u8981\u628a\u76ee\u7684\u4e3b\u673a\u7b97\u8fdb\u53bb\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u516b\u3001\u8fd9\u9053\u9898\u6700\u5bb9\u6613\u72af\u7684\u51e0\u4e2a\u9519\u8bef<\/h3>\n\n\n\n<p>\u8fd9\u9898\u975e\u5e38\u9002\u5408\u62ff\u6765\u603b\u7ed3\u9519\u56e0\uff0c\u56e0\u4e3a\u6bcf\u4e2a\u9519\u8bef\u90fd\u5f88\u5178\u578b\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u628a Router ID \u5f53\u6210\u4e0b\u4e00\u8df3\u5730\u5740<\/h4>\n\n\n\n<p>\u8fd9\u662f OSPF \u9898\u91cc\u5f88\u5e38\u89c1\u7684\u9519\u8bef\u3002<br>Router ID \u662f\u534f\u8bae\u5185\u90e8\u6807\u8bc6\uff0c\u4e0d\u7b49\u4e8e\u8def\u7531\u8868\u91cc\u586b\u5199\u7684\u4e0b\u4e00\u8df3 IP\u3002<br>\u8def\u7531\u8868\u91cc\u901a\u5e38\u5199\u76f8\u90bb\u8def\u7531\u5668\u5728\u8be5\u94fe\u8def\u4e0a\u7684\u63a5\u53e3\u5730\u5740\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u628a\u5bf9\u7aef\u63a5\u53e3\u5f53\u6210\u81ea\u5df1\u7684\u51fa\u53e3\u63a5\u53e3<\/h4>\n\n\n\n<p>\u6bd4\u5982\u53bb R2\uff0cR1 \u7684\u51fa\u53e3\u63a5\u53e3\u662f <code>L0<\/code>\uff0c\u4e0d\u662f R2 \u7684\u63a5\u53e3\u3002<br>\u9898\u76ee\u95ee\u7684\u662f\u201cR1 \u901a\u8fc7\u54ea\u4e2a\u63a5\u53e3\u8f6c\u53d1\u201d\uff0c\u6240\u4ee5\u4e00\u5b9a\u5199 R1 \u81ea\u5df1\u7684\u63a5\u53e3\u540d\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u53ea\u4f1a\u9010\u9879\u5199\u8def\u7531\uff0c\u4e0d\u4f1a\u505a\u805a\u5408<\/h4>\n\n\n\n<p>\u9898\u76ee\u4e13\u95e8\u8bf4\u201c\u8def\u7531\u9879\u5c3d\u53ef\u80fd\u5c11\u201d\uff0c\u8fd9\u65f6\u5c31\u8bf4\u660e\u4e0d\u80fd\u53ea\u505c\u7559\u5728\u666e\u901a\u8def\u7531\u8868\u5c42\u9762\uff0c\u5fc5\u987b\u60f3\u5230\u524d\u7f00\u5408\u5e76\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. TTL \u5c11\u51cf\u4e00\u6b21<\/h4>\n\n\n\n<p>\u5c24\u5176\u662f\u6e90\u4e3b\u673a\u5c31\u5728 R1 \u76f4\u8fde\u7f51\u6bb5\u65f6\uff0c\u5f88\u591a\u4eba\u4f1a\u8bef\u4ee5\u4e3a R1 \u4e0d\u7b97\u201c\u7ecf\u8fc7\u7684\u8def\u7531\u5668\u201d\u3002\u5176\u5b9e\u53ea\u8981\u662f\u7531 R1 \u8f6c\u53d1\u51fa\u53bb\uff0cR1 \u5c31\u4e00\u5b9a\u4f1a\u4f7f TTL \u51cf 1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e5d\u3001\u6700\u7ec8\u7b54\u6848\u6574\u7406<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 1 \u95ee\uff1aR1 \u7684\u6700\u7b80\u8def\u7531\u8868<\/h4>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u76ee\u7684\u7f51\u7edc<\/th><th>\u4e0b\u4e00\u8df3<\/th><th>\u63a5\u53e3<\/th><\/tr><\/thead><tbody><tr><td>192.1.1.0\/24<\/td><td>\u76f4\u8fde<\/td><td>E0<\/td><\/tr><tr><td>192.1.5.0\/24<\/td><td>10.1.1.10<\/td><td>L1<\/td><\/tr><tr><td>192.1.6.0\/23<\/td><td>10.1.1.2<\/td><td>L0<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 2 \u95ee<\/h4>\n\n\n\n<p>R1 \u901a\u8fc7 <code>L0<\/code> \u63a5\u53e3\u8f6c\u53d1\u8be5 IP \u5206\u7ec4\u3002<br>\u4e3b\u673a <code>192.1.7.211<\/code> \u6536\u5230\u8be5 IP \u5206\u7ec4\u65f6\uff0cTTL \u4e3a <code>61<\/code>\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 3 \u95ee<\/h4>\n\n\n\n<p>R1 \u7684 LSI \u81f3\u5c11\u5e94\u589e\u52a0\u4e00\u6761\u9ed8\u8ba4\u8def\u7531\u4fe1\u606f\uff1a<\/p>\n\n\n\n<p><code>Prefix = 0.0.0.0\/0<\/code><br><code>Metric = 10<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/6-768x1024.jpg'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" data-original=\"http:\/\/www.preluna.xyz\/wp-content\/uploads\/2026\/04\/6-768x1024.jpg\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-2005\"  sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/div><\/figure>\n\n\n\n<p>\u8fd9\u9053\u7b2c 6 \u9898\u662f\u628a RIP\u3001OSPF\u3001TTL\u3001RIP \u6536\u655b\u3001BGP \u4f1a\u8bdd\u7c7b\u578b\u3001BGP \u9009\u8def\u8fd9\u51e0\u5757\u4e32\u5728\u4e00\u8d77\u8003\uff0c\u5c5e\u4e8e\u5f88\u5178\u578b\u7684\u201c\u8de8\u77e5\u8bc6\u70b9\u7efc\u5408\u9898\u201d\u3002\u8fd9\u7c7b\u9898\u6700\u91cd\u8981\u7684\u4e0d\u662f\u53ea\u770b\u67d0\u4e00\u4e2a\u70b9\uff0c\u800c\u662f\u5148\u628a\u56fe\u7684\u5c42\u6b21\u5206\u6e05\uff1a<\/p>\n\n\n\n<p>AS1 \u662f\u5185\u90e8\u81ea\u6cbb\u7cfb\u7edf\uff0c\u5185\u90e8\u8dd1 RIP\u3002<br>AS2\u3001AS3\u3001AS4 \u548c AS1 \u4e4b\u95f4\u5c5e\u4e8e\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u7684\u901a\u4fe1\uff0c\u6d89\u53ca BGP\u3002<br>210.2.3.0\/24 \u548c 210.2.4.0\/24 \u662f AS1 \u5185\u90e8\u7684\u4e24\u4e2a\u76ee\u7684\u7f51\u7edc\u3002<br>136.5.16.0\/20 \u662f\u5916\u90e8\u53ef\u8fbe\u7f51\u7edc\uff0c\u901a\u8fc7\u4e0d\u540c AS \u5411 AS1 \u901a\u544a\u3002<\/p>\n\n\n\n<p>\u5148\u628a\u7b54\u6848\u76f4\u63a5\u7ed9\u51fa\u6765\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>AS4 \u5e94\u9009\u62e9 OSPF\u3002<\/li>\n\n\n\n<li>\u521d\u59cb TTL \u81f3\u5c11\u5e94\u8bbe\u4e3a 16\u3002<\/li>\n\n\n\n<li>\u5230 210.2.3.0\/24 \u5168\u90e8\u6536\u655b\u81f3\u5c11\u9700\u8981 30s\uff1b\u5230 210.2.4.0\/24 \u5168\u90e8\u6536\u655b\u81f3\u5c11\u9700\u8981 60s\u3002<\/li>\n\n\n\n<li>R44 \u5411 R13 \u901a\u544a\u65f6\uff0c\u4f7f\u7528 eBGP \u4f1a\u8bdd\uff0c\u901a\u544a\u62a5\u6587\u662f UPDATE\uff1bR13 \u5411 R14\u3001R15 \u901a\u544a\u65f6\uff0c\u4f7f\u7528 iBGP \u4f1a\u8bdd\u3002<\/li>\n\n\n\n<li>R14 \u7684\u4e0b\u4e00\u8df3\u662f R11\uff0cR15 \u7684\u4e0b\u4e00\u8df3\u662f R13\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u4e0b\u9762\u6309\u9898\u76ee\u987a\u5e8f\u8be6\u7ec6\u62c6\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 1 \u95ee\uff1aAS4 \u5e94\u8be5\u9009 RIP \u8fd8\u662f OSPF<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u9898\u7ed3\u8bba<\/h3>\n\n\n\n<p>AS4 \u5e94\u9009\u62e9 <strong>OSPF<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48<\/h3>\n\n\n\n<p>\u9898\u5e72\u5df2\u7ecf\u7ed9\u4e86\u4e00\u4e2a\u5f88\u5173\u952e\u7684\u4fe1\u606f\uff1a<br>\u201cAS4 \u89c4\u6a21\u8f83\u5927\uff0c\u81ea\u6cbb\u7cfb\u7edf\u5185\u4efb\u610f\u4e24\u4e2a\u4e3b\u673a\u95f4\u901a\u4fe1\uff0c\u7ecf\u8fc7\u8def\u7531\u5668\u7684\u6570\u91cf\u53ef\u80fd\u8d85\u8fc7 20 \u4e2a\u3002\u201d<\/p>\n\n\n\n<p>\u8fd9\u53e5\u8bdd\u51e0\u4e4e\u5c31\u662f\u5728\u63d0\u793a\u4e0d\u80fd\u9009 RIP\u3002<\/p>\n\n\n\n<p>\u56e0\u4e3a RIP \u7684\u5ea6\u91cf\u662f\u201c\u8df3\u6570\u201d\uff0c\u5e76\u4e14\u89c4\u5b9a\uff1a<\/p>\n\n\n\n<p><code>\u6700\u5927\u8df3\u6570 = 15<\/code><\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u8d85\u8fc7 15 \u8df3\u5c31\u8ba4\u4e3a\u4e0d\u53ef\u8fbe\u3002<\/p>\n\n\n\n<p>\u800c\u9898\u76ee\u660e\u786e\u8bf4 AS4 \u5185\u90e8\u53ef\u80fd\u8d85\u8fc7 20 \u4e2a\u8def\u7531\u5668\uff0c\u56e0\u6b64\u5982\u679c\u9009 RIP\uff0c\u5c31\u4f1a\u51fa\u73b0\u201c\u660e\u660e\u80fd\u5230\uff0c\u4f46 RIP \u8ba4\u4e3a\u4e0d\u53ef\u8fbe\u201d\u7684\u95ee\u9898\uff0c\u6240\u4ee5\u4e0d\u80fd\u9009 RIP\u3002<\/p>\n\n\n\n<p>OSPF \u5c5e\u4e8e\u94fe\u8def\u72b6\u6001\u534f\u8bae\uff0c\u6ca1\u6709 RIP \u8fd9\u79cd 15 \u8df3\u4e0a\u9650\uff0c\u66f4\u9002\u5408\u5927\u89c4\u6a21\u81ea\u6cbb\u7cfb\u7edf\uff0c\u6536\u655b\u901f\u5ea6\u4e5f\u66f4\u5feb\uff0c\u6240\u4ee5\u5e94\u8be5\u9009 OSPF\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u7c7b\u9898\u600e\u4e48\u5feb\u901f\u8bc6\u522b<\/h3>\n\n\n\n<p>\u53ea\u8981\u770b\u5230\u4e0b\u9762\u8fd9\u79cd\u8868\u8ff0\uff0c\u57fa\u672c\u5c31\u5f80 OSPF \u60f3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u89c4\u6a21\u5927<\/li>\n\n\n\n<li>\u8def\u7531\u5668\u6570\u91cf\u591a<\/li>\n\n\n\n<li>\u8def\u5f84\u53ef\u80fd\u8d85\u8fc7 15 \u8df3<\/li>\n\n\n\n<li>\u5e0c\u671b\u5feb\u901f\u6536\u655b<\/li>\n<\/ul>\n\n\n\n<p>\u53ea\u8981\u9898\u76ee\u628a\u201c\u8d85\u8fc7 15 \u8df3\u201d\u8fd9\u79cd\u8bdd\u5199\u51fa\u6765\uff0c\u51e0\u4e4e\u5c31\u662f\u5728\u6392\u9664 RIP\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 2 \u95ee\uff1aTTL \u81f3\u5c11\u5e94\u8bbe\u7f6e\u4e3a\u591a\u5c11<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u9898\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u521d\u59cb TTL \u81f3\u5c11\u5e94\u8bbe\u7f6e\u4e3a <strong>16<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u89e3\u9898\u5173\u952e<\/h3>\n\n\n\n<p>TTL \u6bcf\u7ecf\u8fc7 <strong>\u4e00\u4e2a\u8def\u7531\u5668<\/strong>\uff0c\u5c31\u51cf 1\u3002<br>\u7ec8\u70b9\u4e3b\u673a\u63a5\u6536\u5206\u7ec4\u65f6\uff0c\u4e0d\u4f1a\u518d\u628a TTL \u51cf 1\u3002<\/p>\n\n\n\n<p>\u9898\u5e72\u8bf4\uff1a<\/p>\n\n\n\n<p>\u201cAS3 \u89c4\u6a21\u8f83\u5c0f\uff0c\u81ea\u6cbb\u7cfb\u7edf\u5185\u4efb\u610f\u4e24\u4e2a\u4e3b\u673a\u95f4\u901a\u4fe1\uff0c\u7ecf\u8fc7\u8def\u7531\u5668\u7684\u6570\u91cf\u4e0d\u8d85\u8fc7 15 \u4e2a\u3002\u201d<\/p>\n\n\n\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u6700\u574f\u60c5\u51b5\u4e0b\uff0c\u4e00\u4e2a IP \u5206\u7ec4\u8981\u7ecf\u8fc7 15 \u4e2a\u8def\u7531\u5668\u3002<\/p>\n\n\n\n<p>\u4e3a\u4e86\u8ba9\u5206\u7ec4\u5728\u901a\u8fc7\u6700\u540e\u4e00\u4e2a\u8def\u7531\u5668\u540e\u4ecd\u7136\u80fd\u88ab\u6b63\u5e38\u8f6c\u53d1\u5230\u76ee\u6807\u4e3b\u673a\uff0cTTL \u5728\u6700\u540e\u4e00\u4e2a\u8def\u7531\u5668\u8f6c\u53d1\u4e4b\u540e\u5fc5\u987b\u4ecd\u7136\u5927\u4e8e 0\u3002<\/p>\n\n\n\n<p>\u5982\u679c\u521d\u59cb TTL = 15\uff0c\u90a3\u4e48\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8fc7\u7b2c 1 \u4e2a\u8def\u7531\u5668\u540e\u53d8 14<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>\u5230\u7b2c 15 \u4e2a\u8def\u7531\u5668\u65f6\u4f1a\u51cf\u5230 0<\/li>\n<\/ul>\n\n\n\n<p>TTL \u53d8\u6210 0 \u65f6\uff0c\u8def\u7531\u5668\u5c31\u8981\u4e22\u5f03\u8be5\u5206\u7ec4\uff0c\u56e0\u6b64 15 \u4e0d\u591f\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u81f3\u5c11\u5e94\u6ee1\u8db3\uff1a<\/p>\n\n\n\n<p><code>\u521d\u59cb TTL = \u8def\u7531\u5668\u4e2a\u6570 + 1 = 15 + 1 = 16<\/code><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6613\u9519\u70b9<\/h3>\n\n\n\n<p>\u5f88\u591a\u4eba\u4f1a\u8bef\u5199\u6210 15\uff0c\u539f\u56e0\u662f\u628a\u201c\u7ecf\u8fc7 15 \u4e2a\u8def\u7531\u5668\u201d\u76f4\u63a5\u7b49\u540c\u4e8e\u201cTTL \u8bbe 15 \u5c31\u591f\u201d\u3002<br>\u8fd9\u662f\u9519\u7684\u3002\u56e0\u4e3a TTL \u662f\u5728\u8def\u7531\u5668\u8f6c\u53d1\u65f6\u5148\u51cf 1\uff0c\u518d\u51b3\u5b9a\u662f\u5426\u7ee7\u7eed\u8f6c\u53d1\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 3 \u95ee\uff1aRIP \u6536\u655b\u65f6\u95f4\u600e\u4e48\u6c42<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u95ee\u662f\u6574\u9898\u91cc\u6700\u5bb9\u6613\u51fa\u9519\u7684\u5730\u65b9\uff0c\u56e0\u4e3a\u5f88\u591a\u4eba\u4f1a\u5ffd\u7565\u201c\u542f\u52a8\u540e\u7acb\u5373\u4ea4\u6362\u521d\u59cb\u8ddd\u79bb\u5411\u91cf\u201d\u8fd9\u53e5\u8bdd\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5148\u770b\u62d3\u6251\u5173\u7cfb<\/h3>\n\n\n\n<p>AS1 \u5185\u90e8\u94fe\u8def\u53ef\u4ee5\u4ece\u56fe\u4e0a\u8bfb\u51fa\u6765\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e0a\u5c42\uff1aR11 \u2014 R12 \u2014 R13<\/li>\n\n\n\n<li>\u7eb5\u5411\/\u659c\u5411\uff1aR11 \u2014 R14\uff0cR12 \u2014 R15\uff0cR13 \u2014 R15<\/li>\n\n\n\n<li>\u4e0b\u5c42\uff1aR14 \u2014 R15 \u2014 R16<\/li>\n<\/ul>\n\n\n\n<p>\u5e76\u4e14\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>210.2.3.0\/24 \u76f4\u63a5\u8fde\u5728 R14 \u8fd9\u4e00\u4fa7<\/li>\n\n\n\n<li>210.2.4.0\/24 \u76f4\u63a5\u8fde\u5728 R16 \u8fd9\u4e00\u4fa7<\/li>\n<\/ul>\n\n\n\n<p>\u9898\u76ee\u53c8\u8bf4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6240\u6709\u8def\u7531\u5668\u540c\u65f6\u542f\u52a8<\/li>\n\n\n\n<li>\u542f\u52a8\u540e<strong>\u7acb\u5373<\/strong>\u4ea4\u6362\u4e00\u6b21\u521d\u59cb\u8ddd\u79bb\u5411\u91cf<\/li>\n\n\n\n<li>\u4e4b\u540e\u6bcf\u9694 30s \u518d\u4ea4\u6362\u4e00\u6b21\u6700\u65b0\u8ddd\u79bb\u5411\u91cf<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u8ba1\u7b97\u65f6\u523b\u8981\u4ece\u201c\u521d\u59cb\u4ea4\u6362\u201d\u5f00\u59cb\u7b97\uff0c\u4e0d\u80fd\u5e73\u767d\u591a\u52a0\u4e00\u4e2a 30s\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u5230\u8fbe 210.2.3.0\/24 \u7684\u6b63\u786e\u8def\u7531\uff0c\u81f3\u5c11\u591a\u957f\u65f6\u95f4<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u9898\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u81f3\u5c11\u9700\u8981 <strong>30s<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u63a8\u7406\u8fc7\u7a0b<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 0 \u8f6e\uff1at = 0\uff0c\u4ea4\u6362\u521d\u59cb\u8ddd\u79bb\u5411\u91cf<\/h4>\n\n\n\n<p>210.2.3.0\/24 \u662f R14 \u76f4\u8fde\u7f51\u7edc\uff0c\u56e0\u6b64\u4e00\u5f00\u59cb\u53ea\u6709 R14 \u77e5\u9053\u8fd9\u6761\u8def\u7531\u3002<br>\u5728 t = 0 \u4ea4\u6362\u521d\u59cb\u8ddd\u79bb\u5411\u91cf\u540e\uff0cR14 \u7684\u90bb\u5c45\u5c31\u80fd\u5b66\u5230\u8fd9\u6761\u8def\u7531\u3002<\/p>\n\n\n\n<p>R14 \u7684\u90bb\u5c45\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R11<\/li>\n\n\n\n<li>R15<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u5728 t = 0 \u540e\uff0c\u5df2\u77e5\u8be5\u8def\u7531\u7684\u8def\u7531\u5668\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R14\uff08\u672c\u6765\u5c31\u77e5\u9053\uff09<\/li>\n\n\n\n<li>R11<\/li>\n\n\n\n<li>R15<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 1 \u8f6e\uff1at = 30s\uff0c\u518d\u4ea4\u6362\u4e00\u6b21<\/h4>\n\n\n\n<p>\u8fd9\u65f6 R11 \u548c R15 \u4f1a\u628a\u81ea\u5df1\u5b66\u5230\u7684\u8def\u7531\u7ee7\u7eed\u901a\u544a\u51fa\u53bb\u3002<\/p>\n\n\n\n<p>\u4e8e\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R12 \u53ef\u4ece R11 \u6216 R15 \u5b66\u5230<\/li>\n\n\n\n<li>R13 \u53ef\u4ece R15 \u5b66\u5230<\/li>\n\n\n\n<li>R16 \u53ef\u4ece R15 \u5b66\u5230<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u6837 R11\uff5eR16 \u5168\u90e8\u90fd\u77e5\u9053\u5230\u8fbe 210.2.3.0\/24 \u7684\u6b63\u786e\u8def\u7531\u4e86\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u5c11\u65f6\u95f4\u662f <strong>30s<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u4e2a\u66f4\u5feb\u7684\u5224\u65ad\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u770b\u201c\u79bb\u76f4\u8fde\u8def\u7531\u5668\u6700\u8fdc\u7684\u90a3\u4e2a\u8def\u7531\u5668\u201d\u6709\u51e0\u8df3\u3002<\/p>\n\n\n\n<p>\u5bf9\u4e8e 210.2.3.0\/24\uff0c\u76f4\u8fde\u8def\u7531\u5668\u662f R14\u3002<br>\u4ece R14 \u5230\u6700\u8fdc\u7684\u8def\u7531\u5668\uff0c\u6700\u8fdc\u53ea\u9700\u8981\u7ecf\u8fc7\u4e24\u8f6e\u4f20\u64ad\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c 0 \u8f6e\uff1a\u5148\u4f20\u7ed9\u4e00\u8df3\u90bb\u5c45<\/li>\n\n\n\n<li>\u7b2c 1 \u8f6e\uff1a\u518d\u4f20\u7ed9\u4e24\u8df3\u90bb\u5c45<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64\u603b\u65f6\u95f4\u5c31\u662f 1 \u4e2a\u66f4\u65b0\u5468\u671f\uff0c\u5373 30s\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \u5230\u8fbe 210.2.4.0\/24 \u7684\u6b63\u786e\u8def\u7531\uff0c\u81f3\u5c11\u591a\u957f\u65f6\u95f4<\/h3>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u9898\u7ed3\u8bba<\/h3>\n\n\n\n<p>\u81f3\u5c11\u9700\u8981 <strong>60s<\/strong>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u63a8\u7406\u8fc7\u7a0b<\/h3>\n\n\n\n<p>210.2.4.0\/24 \u662f R16 \u76f4\u8fde\u7f51\u7edc\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 0 \u8f6e\uff1at = 0<\/h4>\n\n\n\n<p>R16 \u5148\u628a\u8def\u7531\u901a\u544a\u7ed9\u5b83\u7684\u90bb\u5c45\u3002<br>R16 \u7684\u90bb\u5c45\u53ea\u6709 R15\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5 t = 0 \u540e\u77e5\u9053\u8be5\u8def\u7531\u7684\u6709\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R16<\/li>\n\n\n\n<li>R15<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 1 \u8f6e\uff1at = 30s<\/h4>\n\n\n\n<p>R15 \u518d\u5411\u5916\u4f20\u64ad\uff0c\u4e8e\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R14 \u5b66\u5230<\/li>\n\n\n\n<li>R12 \u5b66\u5230<\/li>\n\n\n\n<li>R13 \u5b66\u5230<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u65f6\u8fd8\u5269 R11 \u4e0d\u77e5\u9053\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7b2c 2 \u8f6e\uff1at = 60s<\/h4>\n\n\n\n<p>R14 \u6216 R12 \u518d\u628a\u8be5\u8def\u7531\u4f20\u7ed9 R11\uff0c<br>\u4e8e\u662f R11 \u4e5f\u5b66\u5230\u3002<\/p>\n\n\n\n<p>\u81f3\u6b64\uff0cR11\uff5eR16 \u5168\u90e8\u83b7\u5f97\u5230\u8fbe 210.2.4.0\/24 \u7684\u6b63\u786e\u8def\u7531\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u5c11\u65f6\u95f4\u662f <strong>60s<\/strong>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u4e00\u95ee\u6700\u5bb9\u6613\u9519\u5728\u54ea\u91cc<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u9519\u6cd5 1\uff1a\u628a\u201c\u7acb\u5373\u4ea4\u6362\u521d\u59cb\u8ddd\u79bb\u5411\u91cf\u201d\u5fd8\u4e86<\/h4>\n\n\n\n<p>\u5982\u679c\u5fd8\u4e86\u8fd9\u53e5\u8bdd\uff0c\u5c31\u4f1a\u628a\u7b54\u6848\u591a\u7b97\u4e00\u4e2a\u5468\u671f\uff0c\u5199\u6210\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>210.2.3.0\/24\uff1a60s<\/li>\n\n\n\n<li>210.2.4.0\/24\uff1a90s<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u662f\u5e38\u89c1\u9519\u8bef\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u9519\u6cd5 2\uff1a\u4e0d\u4f1a\u6570\u4f20\u64ad\u8f6e\u6b21<\/h4>\n\n\n\n<p>RIP \u8fd9\u79cd\u9898\uff0c\u672c\u8d28\u5c31\u662f\u201c\u8ddd\u79bb\u5411\u91cf\u4e00\u8f6e\u4e00\u8f6e\u5411\u5916\u6269\u6563\u201d\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u8bb0\u4e00\u4e2a\u505a\u9898\u6a21\u677f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u76f4\u8fde\u8def\u7531\u5668\uff1a\u521d\u59cb\u5c31\u77e5\u9053<\/li>\n\n\n\n<li>\u521d\u59cb\u4ea4\u6362\u540e\uff1a\u4e00\u8df3\u90bb\u5c45\u77e5\u9053<\/li>\n\n\n\n<li>\u518d\u8fc7\u4e00\u4e2a\u5468\u671f\uff1a\u4e24\u8df3\u90bb\u5c45\u77e5\u9053<\/li>\n\n\n\n<li>\u518d\u8fc7\u4e00\u4e2a\u5468\u671f\uff1a\u4e09\u8df3\u90bb\u5c45\u77e5\u9053<\/li>\n<\/ul>\n\n\n\n<p>\u4e5f\u5c31\u662f\u201c\u6bcf\u8fc7\u4e00\u4e2a\u66f4\u65b0\u5468\u671f\uff0c\u5df2\u77e5\u8303\u56f4\u5411\u5916\u6269\u4e00\u8df3\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 4 \u95ee\uff1aBGP \u4f1a\u8bdd\u7c7b\u578b\u548c\u62a5\u6587\u7c7b\u578b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u672c\u9898\u7ed3\u8bba<\/h3>\n\n\n\n<p>R44 \u5411 R13 \u901a\u544a\u5230\u7f51\u7edc 136.5.16.0\/20 \u7684\u8def\u7531\u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <strong>eBGP<\/strong> \u4f1a\u8bdd<\/li>\n\n\n\n<li>\u4f7f\u7528 <strong>UPDATE<\/strong> \u62a5\u6587\u901a\u544a<\/li>\n<\/ul>\n\n\n\n<p>R13 \u518d\u628a\u8be5\u7f51\u7edc\u53ef\u8fbe\u6027\u4fe1\u606f\u901a\u544a\u7ed9 R14 \u548c R15 \u65f6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4f7f\u7528 <strong>iBGP<\/strong> \u4f1a\u8bdd<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">R44 \u5230 R13<\/h4>\n\n\n\n<p>R44 \u5c5e\u4e8e AS4\uff0cR13 \u5c5e\u4e8e AS1\u3002<br>\u4e0d\u540c\u81ea\u6cbb\u7cfb\u7edf\u4e4b\u95f4\u5efa\u7acb\u7684 BGP \u4f1a\u8bdd\u53eb <strong>eBGP<\/strong>\u3002<\/p>\n\n\n\n<p>\u800c BGP \u4e2d\u643a\u5e26\u53ef\u8fbe\u6027\u4fe1\u606f\u3001\u64a4\u9500\u8def\u7531\u4fe1\u606f\u3001\u8def\u5f84\u5c5e\u6027\u4fe1\u606f\u7684\u62a5\u6587\uff0c\u662f <strong>UPDATE \u62a5\u6587<\/strong>\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u91cc\u662f\uff1a<\/p>\n\n\n\n<p><code>R44 -&gt; R13\uff1aeBGP + UPDATE<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">R13 \u5230 R14\u3001R15<\/h4>\n\n\n\n<p>R13\u3001R14\u3001R15 \u90fd\u5728 AS1 \u5185\u90e8\u3002<br>\u540c\u4e00\u81ea\u6cbb\u7cfb\u7edf\u5185\u90e8\u7684 BGP \u4f1a\u8bdd\u53eb <strong>iBGP<\/strong>\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<p><code>R13 -&gt; R14\/R15\uff1aiBGP<\/code><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8fd9\u7c7b\u9898\u7684\u79d2\u6740\u601d\u8def<\/h3>\n\n\n\n<p>\u53ea\u770b\u662f\u5426\u8de8 AS\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8de8 AS\uff1aeBGP<\/li>\n\n\n\n<li>\u540c AS\uff1aiBGP<\/li>\n<\/ul>\n\n\n\n<p>\u53ea\u8981\u9898\u76ee\u8bf4\u201c\u901a\u544a\u8def\u7531\u201d\u201c\u53d1\u5e03\u53ef\u8fbe\u6027\u4fe1\u606f\u201d\uff0c\u4f18\u5148\u60f3\u5230 UPDATE \u62a5\u6587\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b2c 5 \u95ee\uff1aR14 \u548c R15 \u6700\u7ec8\u9009\u62e9\u54ea\u4e2a\u4e0b\u4e00\u8df3<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u95ee\u8003\u7684\u662f BGP \u9009\u8def\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u7ed9\u51fa\u7684\u4e09\u6761\u8def\u7531<\/h3>\n\n\n\n<p>\u5230\u8fbe\u76ee\u7684\u7f51\u7edc 136.5.16.0\/20\uff0c\u6709\u4e09\u6761\u5019\u9009\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e0b\u4e00\u8df3 R11\uff0cAS \u8def\u5f84\uff1aAS2 AS8 AS19<\/li>\n\n\n\n<li>\u4e0b\u4e00\u8df3 R12\uff0cAS \u8def\u5f84\uff1aAS3 AS7 AS11 AS19<\/li>\n\n\n\n<li>\u4e0b\u4e00\u8df3 R13\uff0cAS \u8def\u5f84\uff1aAS4 AS10 AS19<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u5148\u6bd4 AS_PATH \u957f\u5ea6<\/h3>\n\n\n\n<p>\u5728\u201c\u65e0\u7b56\u7565\u7ea6\u675f\u201d\u4e0b\uff0c\u5148\u770b AS_PATH \u957f\u5ea6\uff0c\u901a\u5e38\u4f18\u5148\u9009\u66f4\u77ed\u7684 AS \u8def\u5f84\u3002<\/p>\n\n\n\n<p>\u4e09\u6761\u8def\u5f84\u957f\u5ea6\u5206\u522b\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ecf R11\uff1a3<\/li>\n\n\n\n<li>\u7ecf R12\uff1a4<\/li>\n\n\n\n<li>\u7ecf R13\uff1a3<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u7ecf R12 \u7684\u90a3\u6761\u8def\u5f84\u66f4\u957f\uff0c\u5148\u6dd8\u6c70\u3002<br>\u5269\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ecf R11<\/li>\n\n\n\n<li>\u7ecf R13<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u518d\u6bd4\u5230\u4e0b\u4e00\u8df3\u7684\u5185\u90e8\u4ee3\u4ef7<\/h3>\n\n\n\n<p>\u5269\u4e0b\u4e24\u6761 AS_PATH \u957f\u5ea6\u76f8\u540c\uff0c\u8fd9\u65f6\u901a\u5e38\u6bd4\u8f83\u5230 BGP \u4e0b\u4e00\u8df3\u7684 IGP \u4ee3\u4ef7\uff0c\u8c01\u79bb\u51fa\u53e3\u66f4\u8fd1\uff0c\u5c31\u4ece\u8c01\u51fa\u53bb\u3002\u8fd9\u5c31\u662f\u5e38\u8bf4\u7684\u201c\u70ed\u571f\u8c46\u8def\u7531\u201d\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5.1 R14 \u9009\u8c01<\/h3>\n\n\n\n<p>\u4ece\u56fe\u4e0a\u770b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R14 \u5230 R11\uff1a1 \u8df3\uff08\u76f4\u63a5\u76f8\u8fde\uff09<\/li>\n\n\n\n<li>R14 \u5230 R13\uff1a\u53ef\u8d70 R14 \u2192 R15 \u2192 R13\uff0c\u5171 2 \u8df3<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64 R14 \u66f4\u9760\u8fd1 R11\uff0c\u5e94\u8be5\u9009\u7ecf R11 \u7684\u90a3\u6761\u51fa\u53e3\u8def\u7531\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<p><code>R14 \u7684\u4e0b\u4e00\u8df3 = R11<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">5.2 R15 \u9009\u8c01<\/h3>\n\n\n\n<p>\u4ece\u56fe\u4e0a\u770b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>R15 \u5230 R13\uff1a1 \u8df3\uff08\u76f4\u63a5\u76f8\u8fde\uff09<\/li>\n\n\n\n<li>R15 \u5230 R11\uff1a\u6700\u5c11 2 \u8df3\uff0c\u53ef\u8d70 R15 \u2192 R14 \u2192 R11\uff0c\u6216\u8005 R15 \u2192 R12 \u2192 R11<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64 R15 \u66f4\u9760\u8fd1 R13\uff0c\u5e94\u8be5\u9009\u7ecf R13 \u7684\u90a3\u6761\u51fa\u53e3\u8def\u7531\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<p><code>R15 \u7684\u4e0b\u4e00\u8df3 = R13<\/code><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u8fd9\u9053\u7efc\u5408\u9898\u5230\u5e95\u5728\u8003\u4ec0\u4e48<\/h2>\n\n\n\n<p>\u8fd9\u9898\u5b9e\u9645\u4e0a\u5728\u540c\u65f6\u8003 5 \u4e2a\u5224\u65ad\u6a21\u677f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u5185\u90e8\u7f51\u5173\u534f\u8bae\u9009\u578b<\/strong><br>\u770b\u5230\u201c\u5927\u89c4\u6a21\u3001\u8d85 15 \u8df3\u201d\uff0c\u5c31\u8981\u6392\u9664 RIP\uff0c\u9009 OSPF\u3002<\/li>\n\n\n\n<li><strong>TTL \u7684\u6700\u5c0f\u503c<\/strong><br>\u8bb0\u4f4f\uff1a<br><code>\u6700\u5c0f TTL = \u7ecf\u8fc7\u7684\u8def\u7531\u5668\u6570 + 1<\/code><\/li>\n\n\n\n<li><strong>RIP \u6536\u655b\u65f6\u95f4<\/strong><br>\u8bb0\u4f4f\uff1a<br>\u201c\u8ddd\u79bb\u5411\u91cf\u6bcf\u8fc7\u4e00\u4e2a\u66f4\u65b0\u5468\u671f\uff0c\u6700\u591a\u5411\u5916\u4f20\u64ad\u4e00\u8df3\u3002\u201d<br>\u4f46\u8981\u7279\u522b\u770b\u9898\u76ee\u6709\u6ca1\u6709\u8bf4\u201c\u542f\u52a8\u540e\u7acb\u5373\u4ea4\u6362\u4e00\u6b21\u521d\u59cb\u8ddd\u79bb\u5411\u91cf\u201d\u3002<\/li>\n\n\n\n<li><strong>BGP \u4f1a\u8bdd\u7c7b\u578b<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u8de8 AS\uff1aeBGP<\/li>\n\n\n\n<li>\u540c AS\uff1aiBGP<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>BGP \u9009\u8def<\/strong><br>\u5728\u65e0\u7b56\u7565\u7ea6\u675f\u4e0b\uff0c\u5148\u6bd4 AS_PATH \u957f\u5ea6\uff1b\u82e5\u76f8\u540c\uff0c\u518d\u6bd4\u5230\u51fa\u53e3\u7684\u5185\u90e8\u4ee3\u4ef7\uff0c\u8c01\u8fd1\u8d70\u8c01\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u7c7b\u9898\u7684\u96be\u70b9\uff0c\u4e0d\u5728\u4e8e\u67d0\u4e00\u4e2a\u77e5\u8bc6\u70b9\u7279\u522b\u96be\uff0c\u800c\u5728\u4e8e\u5bb9\u6613\u628a\u591a\u4e2a\u534f\u8bae\u7684\u89c4\u5219\u6df7\u5728\u4e00\u8d77\u3002\u505a\u9898\u65f6\u6700\u597d\u5148\u5728\u8349\u7a3f\u4e0a\u6807\u660e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u54ea\u4e9b\u5c5e\u4e8e AS \u5185\u90e8<\/li>\n\n\n\n<li>\u54ea\u4e9b\u5c5e\u4e8e AS \u4e4b\u95f4<\/li>\n\n\n\n<li>\u54ea\u4e2a\u534f\u8bae\u8d1f\u8d23\u54ea\u4e00\u6bb5<\/li>\n\n\n\n<li>\u54ea\u6761\u8def\u7531\u662f\u76f4\u8fde\u3001\u54ea\u6761\u662f\u4f20\u64ad\u5f97\u5230\u7684<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u6837\u57fa\u672c\u5c31\u4e0d\u4f1a\u4e71\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b2c22\u9898\uff1a\u8ddd\u79bb\u5411\u91cf\u7b97\u6cd5\u66f4\u65b0 \u9898\u76ee\u7ed3\u8bba \u7b2c 22 \u9898\u9009 B\u3002 C \u5230\u6240\u6709\u7ed3\u70b9\u7684\u6700\u77ed\u8def\u5f84\u5411\u91cf\u4e3a\uff1a (11, 6,  [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-1987","post","type-post","status-publish","format-standard","hentry","category-text"],"_links":{"self":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/1987","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=1987"}],"version-history":[{"count":8,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/1987\/revisions"}],"predecessor-version":[{"id":2008,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/1987\/revisions\/2008"}],"wp:attachment":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=1987"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=1987"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=1987"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}