{"id":1944,"date":"2026-04-16T19:05:58","date_gmt":"2026-04-16T11:05:58","guid":{"rendered":"http:\/\/www.preluna.xyz\/?p=1944"},"modified":"2026-04-16T19:45:05","modified_gmt":"2026-04-16T11:45:05","slug":"%e5%ad%90%e7%bd%91%e6%8e%a9%e7%a0%81%e3%80%81%e5%9d%97%e5%a4%a7%e5%b0%8f%e3%80%81%e7%bd%91%e7%bb%9c%e5%9c%b0%e5%9d%80%e3%80%81%e5%b9%bf%e6%92%ad%e5%9c%b0%e5%9d%80%ef%bc%8c%e8%bf%99%e4%b8%80%e4%b8%b2","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2026\/04\/16\/%e5%ad%90%e7%bd%91%e6%8e%a9%e7%a0%81%e3%80%81%e5%9d%97%e5%a4%a7%e5%b0%8f%e3%80%81%e7%bd%91%e7%bb%9c%e5%9c%b0%e5%9d%80%e3%80%81%e5%b9%bf%e6%92%ad%e5%9c%b0%e5%9d%80%ef%bc%8c%e8%bf%99%e4%b8%80%e4%b8%b2\/preluna\/text\/","title":{"rendered":"\u5b50\u7f51\u63a9\u7801\u3001\u5757\u5927\u5c0f\u3001\u7f51\u7edc\u5730\u5740\u3001\u5e7f\u64ad\u5730\u5740\uff0c\u8fd9\u4e00\u4e32\u5230\u5e95\u600e\u4e48\u5feb\u901f\u5224\u65ad"},"content":{"rendered":"\n<p>\u8fd9\u4e00\u5757\u786e\u5b9e\u662f IPv4 \u7f16\u5740\u91cc\u6700\u5bb9\u6613\u201c\u770b\u61c2\u4e86\u4f46\u505a\u9898\u6162\u201d\u7684\u5730\u65b9\u3002\u56e0\u4e3a\u539f\u7406\u5e76\u4e0d\u96be\uff0c\u96be\u7684\u662f\u8003\u573a\u4e0a\u4e0d\u80fd\u6bcf\u6b21\u90fd\u8001\u8001\u5b9e\u5b9e\u8f6c\u5b8c\u6574\u4e8c\u8fdb\u5236\u3002\u771f\u6b63\u505a\u9898\u65f6\uff0c\u5fc5\u987b\u5f62\u6210\u4e00\u79cd<strong>\u534a\u53e3\u7b97\u3001\u534a\u6a21\u677f\u5316<\/strong>\u7684\u5224\u65ad\u4e60\u60ef\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e00\u90e8\u5206\u7684\u6838\u5fc3\u5176\u5b9e\u5c31\u4e09\u53e5\u8bdd\uff1a<\/p>\n\n\n\n<p>\u7b2c\u4e00\uff0c<strong>\u5148\u770b\u524d\u7f00\u957f\u5ea6\uff0c\u4e5f\u5c31\u662f\u524d\u9762\u8fde\u7eed\u6709\u591a\u5c11\u4e2a 1<\/strong>\u3002<br>\u7b2c\u4e8c\uff0c<strong>\u627e\u5230\u201c\u4e0d\u662f 255 \u4e5f\u4e0d\u662f 0 \u7684\u90a3\u4e2a\u5b57\u8282\u201d\uff0c\u5757\u5927\u5c0f\u5c31\u7531\u5b83\u51b3\u5b9a<\/strong>\u3002<br>\u7b2c\u4e09\uff0c<strong>\u4e3b\u673a\u5730\u5740\u843d\u5728\u54ea\u4e2a\u5757\u91cc\uff0c\u90a3\u4e2a\u5757\u7684\u8d77\u70b9\u5c31\u662f\u7f51\u7edc\u5730\u5740\uff0c\u5757\u7684\u7ec8\u70b9\u5c31\u662f\u5e7f\u64ad\u5730\u5740\u3002<\/strong><\/p>\n\n\n\n<p>\u53ea\u8981\u8fd9\u4e09\u6b65\u7a33\u4e86\uff0c\u540e\u9762\u540c\u5b50\u7f51\u3001\u9ed8\u8ba4\u7f51\u5173\u3001\u5e7f\u64ad\u5730\u5740\u3001CIDR \u8303\u56f4\uff0c\u90fd\u4f1a\u8fde\u8d77\u6765\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u5982\u4f55\u901a\u8fc7\u5b50\u7f51\u63a9\u7801\u5feb\u901f\u5224\u65ad\u524d\u7f00\u957f\u5ea6<\/h2>\n\n\n\n<p>\u6700\u76f4\u63a5\u7684\u601d\u8def\u5c31\u662f\uff1a<strong>255 \u7b97 8 \u4f4d\uff0c0 \u7b97 0 \u4f4d\uff0c\u4e2d\u95f4\u503c\u80cc\u4e0b\u6765\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6700\u503c\u5f97\u80cc\u7684\u4e00\u5f20\u8868<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u63a9\u7801\u5b57\u8282<\/th><th>\u4e8c\u8fdb\u5236<\/th><th>\u8d21\u732e\u7684\u524d\u7f00\u4f4d\u6570<\/th><th>\u5757\u5927\u5c0f<\/th><\/tr><\/thead><tbody><tr><td>255<\/td><td>11111111<\/td><td>8<\/td><td>1<\/td><\/tr><tr><td>254<\/td><td>11111110<\/td><td>7<\/td><td>2<\/td><\/tr><tr><td>252<\/td><td>11111100<\/td><td>6<\/td><td>4<\/td><\/tr><tr><td>248<\/td><td>11111000<\/td><td>5<\/td><td>8<\/td><\/tr><tr><td>240<\/td><td>11110000<\/td><td>4<\/td><td>16<\/td><\/tr><tr><td>224<\/td><td>11100000<\/td><td>3<\/td><td>32<\/td><\/tr><tr><td>192<\/td><td>11000000<\/td><td>2<\/td><td>64<\/td><\/tr><tr><td>128<\/td><td>10000000<\/td><td>1<\/td><td>128<\/td><\/tr><tr><td>0<\/td><td>00000000<\/td><td>0<\/td><td>256<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u5f20\u8868\u6700\u597d\u76f4\u63a5\u80cc\u4f4f\u3002\u56e0\u4e3a\u8003\u8bd5\u91cc\u771f\u6b63\u53d8\u5316\u7684\uff0c\u51e0\u4e4e\u603b\u662f\u8fd9\u51e0\u4e2a\u6570\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b\u5b50\uff1a255.255.240.0 \u7684\u524d\u7f00\u957f\u5ea6\u600e\u4e48\u5feb\u901f\u5224\u65ad<\/h3>\n\n\n\n<p>\u4e0d\u7528\u5b8c\u6574\u5199\u4e8c\u8fdb\u5236\uff0c\u76f4\u63a5\u62c6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u4e2a 255 \u2192 8 \u4f4d<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u4e2a 255 \u2192 8 \u4f4d<\/li>\n\n\n\n<li>\u7b2c\u4e09\u4e2a 240 \u2192 4 \u4f4d<\/li>\n\n\n\n<li>\u7b2c\u56db\u4e2a 0 \u2192 0 \u4f4d<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u524d\u7f00\u957f\u5ea6\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><code>8 + 8 + 4 = 20<\/code><\/p>\n\n\n\n<p>\u56e0\u6b64\uff1a<\/p>\n\n\n\n<p><strong>255.255.240.0 = \/20<\/strong><\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u518d\u4e3e\u51e0\u4e2a\u5178\u578b\u53e3\u7b97<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>255.255.255.248 \u2192 <code>8 + 8 + 8 + 5 = \/29<\/code><\/li>\n\n\n\n<li>255.255.255.224 \u2192 <code>8 + 8 + 8 + 3 = \/27<\/code><\/li>\n\n\n\n<li>255.255.192.0 \u2192 <code>8 + 8 + 2 = \/18<\/code><\/li>\n\n\n\n<li>255.255.252.0 \u2192 <code>8 + 8 + 6 = \/22<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u8003\u573a\u4e0a\u770b\u5230\u8fd9\u4e9b\uff0c\u5e94\u8be5\u5c3d\u91cf\u505a\u5230\u4e00\u773c\u53cd\u5e94\uff0c\u4e0d\u518d\u91cd\u5199\u4e8c\u8fdb\u5236\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u5982\u4f55\u5feb\u901f\u901a\u8fc7\u5b50\u7f51\u63a9\u7801\u5224\u65ad\u5757\u5927\u5c0f<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u70b9\u662f\u6700\u5173\u952e\u7684\u3002<br>\u771f\u6b63\u505a\u9898\u65f6\uff0c<strong>\u5757\u5927\u5c0f = 256 &#8211; \u8be5\u5173\u952e\u63a9\u7801\u5b57\u8282\u7684\u503c<\/strong>\u3002<\/p>\n\n\n\n<p>\u8fd9\u91cc\u7684\u201c\u5173\u952e\u63a9\u7801\u5b57\u8282\u201d\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><strong>\u4ece\u5de6\u5230\u53f3\uff0c\u7b2c\u4e00\u4e2a\u4e0d\u662f 255\u3001\u4e5f\u4e0d\u662f 0 \u7684\u5b57\u8282\u3002<\/strong><\/p>\n\n\n\n<p>\u56e0\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u524d\u9762\u5168\u662f 255 \u7684\u5b57\u8282\uff0c\u8bf4\u660e\u8fd9\u4e9b\u4f4d\u5df2\u7ecf\u5b8c\u5168\u56fa\u5b9a\uff0c\u662f\u7f51\u7edc\u90e8\u5206<\/li>\n\n\n\n<li>\u540e\u9762\u5168\u662f 0 \u7684\u5b57\u8282\uff0c\u8bf4\u660e\u8fd9\u4e9b\u4f4d\u5b8c\u5168\u662f\u4e3b\u673a\u90e8\u5206<\/li>\n\n\n\n<li>\u53ea\u6709\u4e2d\u95f4\u90a3\u4e2a\u201c\u534a\u6ee1\u4e0d\u6ee1\u201d\u7684\u5b57\u8282\uff0c\u51b3\u5b9a\u5757\u600e\u4e48\u5207<\/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\">\u4f8b\u5b50 1\uff1a255.255.240.0<\/h3>\n\n\n\n<p>\u5173\u952e\u5b57\u8282\u662f\u7b2c\u4e09\u4e2a\u5b57\u8282\u7684 240\u3002<\/p>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 240 = 16<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c\u4e09\u4e2a\u5b57\u8282\u6309 16 \u4e00\u7ec4\u6765\u5206\u5757\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~15<\/li>\n\n\n\n<li>16~31<\/li>\n\n\n\n<li>32~47<\/li>\n\n\n\n<li>48~63<\/li>\n\n\n\n<li>64~79<\/li>\n\n\n\n<li>80~95<\/li>\n\n\n\n<li>96~111<\/li>\n\n\n\n<li>112~127<\/li>\n\n\n\n<li>128~143<\/li>\n\n\n\n<li>144~159<\/li>\n\n\n\n<li>160~175<\/li>\n\n\n\n<li>176~191<\/li>\n\n\n\n<li>192~207<\/li>\n\n\n\n<li>208~223<\/li>\n\n\n\n<li>224~239<\/li>\n\n\n\n<li>240~255<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u5c31\u662f \/20 \u7f51\u7edc\u5728\u7b2c\u4e09\u4e2a\u5b57\u8282\u4e0a\u7684\u5206\u5757\u65b9\u5f0f\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b\u5b50 2\uff1a255.255.255.224<\/h3>\n\n\n\n<p>\u5173\u952e\u5b57\u8282\u662f 224\u3002<\/p>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 224 = 32<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u6309 32 \u4e00\u7ec4\u6765\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~31<\/li>\n\n\n\n<li>32~63<\/li>\n\n\n\n<li>64~95<\/li>\n\n\n\n<li>96~127<\/li>\n\n\n\n<li>128~159<\/li>\n\n\n\n<li>160~191<\/li>\n\n\n\n<li>192~223<\/li>\n\n\n\n<li>224~255<\/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\">\u4f8b\u5b50 3\uff1a255.255.255.248<\/h3>\n\n\n\n<p>\u5173\u952e\u5b57\u8282\u662f 248\u3002<\/p>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 248 = 8<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u6309 8 \u4e00\u7ec4\u6765\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~7<\/li>\n\n\n\n<li>8~15<\/li>\n\n\n\n<li>16~23<\/li>\n\n\n\n<li>24~31<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>248~255<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\u5982\u4f55\u5feb\u901f\u5224\u65ad\u201c\u8fd9\u4e2a\u4e3b\u673a\u5730\u5740\u5177\u4f53\u843d\u5728\u54ea\u4e2a\u5757\u91cc\u201d<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u6b65\u624d\u662f\u505a\u9898\u6700\u6838\u5fc3\u7684\u6280\u5de7\u3002<\/p>\n\n\n\n<p>\u65b9\u6cd5\u5f88\u7b80\u5355\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65<\/h3>\n\n\n\n<p>\u5148\u627e\u5230\u5173\u952e\u5b57\u8282\u548c\u5757\u5927\u5c0f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65<\/h3>\n\n\n\n<p>\u53ea\u770b\u4e3b\u673a\u5730\u5740\u5728\u90a3\u4e2a\u5173\u952e\u5b57\u8282\u4e0a\u7684\u6570\u503c\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65<\/h3>\n\n\n\n<p>\u770b\u5b83\u843d\u5728\u54ea\u4e2a\u5206\u7ec4\u533a\u95f4\u3002<\/p>\n\n\n\n<p>\u90a3\u4e2a\u533a\u95f4\u7684<strong>\u8d77\u70b9<\/strong>\uff0c\u5c31\u662f\u7f51\u7edc\u5730\u5740\u5728\u8be5\u5b57\u8282\u4e0a\u7684\u503c\uff1b<br>\u90a3\u4e2a\u533a\u95f4\u7684<strong>\u7ec8\u70b9<\/strong>\uff0c\u5c31\u662f\u5e7f\u64ad\u5730\u5740\u5728\u8be5\u5b57\u8282\u4e0a\u7684\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\">\u56db\u3001\u4e3a\u4ec0\u4e48\u7f51\u7edc\u5730\u5740\u4e00\u5b9a\u80fd\u786e\u5b9a<\/h2>\n\n\n\n<p>\u56e0\u4e3a<strong>\u5b50\u7f51\u63a9\u7801\u5df2\u7ecf\u51b3\u5b9a\u4e86\u5757\u5927\u5c0f\uff0c\u5757\u5927\u5c0f\u53c8\u51b3\u5b9a\u4e86\u5206\u5757\u8fb9\u754c<\/strong>\u3002<br>\u800c\u4e3b\u673a\u5730\u5740\u4e00\u65e6\u7ed9\u51fa\uff0c\u5b83\u5c31\u4e00\u5b9a\u843d\u5728\u67d0\u4e00\u4e2a\u786e\u5b9a\u7684\u5757\u4e2d\uff0c\u4e0d\u53ef\u80fd\u540c\u65f6\u843d\u5728\u4e24\u4e2a\u5757\u91cc\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<p><strong>\u4e3b\u673a\u5730\u5740 + \u5b50\u7f51\u63a9\u7801 \u2192 \u6240\u5c5e\u5757\u552f\u4e00\u786e\u5b9a \u2192 \u7f51\u7edc\u5730\u5740\u548c\u5e7f\u64ad\u5730\u5740\u552f\u4e00\u786e\u5b9a\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48\u7f51\u7edc\u5730\u5740\u662f\u201c\u5fc5\u7136\u80fd\u7b97\u51fa\u6765\u201d\u7684\uff0c\u4e0d\u662f\u731c\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u5b8c\u6574\u8d70\u4e00\u904d<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5df2\u77e5<\/h3>\n\n\n\n<p>\u4e3b\u673a\u5730\u5740\uff1a<code>200.15.10.6\/29<\/code><br>\u9ed8\u8ba4\u7f51\u5173\uff1a<code>200.15.10.7<\/code><\/p>\n\n\n\n<p>\u73b0\u5728\u4e00\u6b65\u4e00\u6b65\u7b97\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\u5148\u770b \/29 \u5bf9\u5e94\u4ec0\u4e48\u63a9\u7801<\/h3>\n\n\n\n<p><code>\/29 = 255.255.255.248<\/code><\/p>\n\n\n\n<p>\u56e0\u4e3a\u6700\u540e\u4e00\u4e2a\u5b57\u8282 248 \u5bf9\u5e94 5 \u4f4d\u524d\u7f00\u8d21\u732e\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\u6c42\u5757\u5927\u5c0f<\/h3>\n\n\n\n<p>\u5173\u952e\u5b57\u8282\u662f\u6700\u540e\u4e00\u4e2a\u5b57\u8282 248\u3002<\/p>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 248 = 8<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u6309 8 \u4e00\u7ec4\u6765\u5206\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~7<\/li>\n\n\n\n<li>8~15<\/li>\n\n\n\n<li>16~23<\/li>\n\n\n\n<li>24~31<\/li>\n\n\n\n<li>32~39<\/li>\n\n\n\n<li>40~47<\/li>\n\n\n\n<li>\u2026<\/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\">\u7b2c\u4e09\u6b65\uff1a\u770b\u4e3b\u673a\u5730\u5740 200.15.10.6 \u843d\u5728\u54ea\u4e2a\u5757<\/h3>\n\n\n\n<p>\u5b83\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u662f 6\u3002<br>6 \u843d\u5728\u533a\u95f4\uff1a<\/p>\n\n\n\n<p><strong>0~7<\/strong><\/p>\n\n\n\n<p>\u6240\u4ee5\u8fd9\u4e2a\u5b50\u7f51\u5c31\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a<code>200.15.10.0<\/code><\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a<code>200.15.10.7<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u4e2d\u95f4\u53ef\u7528\u4e3b\u673a\u5730\u5740\u4e3a\uff1a<\/p>\n\n\n\n<p><code>200.15.10.1 ~ 200.15.10.6<\/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\u89e3\u91ca\u4e3a\u4ec0\u4e48\u9ed8\u8ba4\u7f51\u5173 200.15.10.7 \u9519\u4e86<\/h3>\n\n\n\n<p>\u56e0\u4e3a\u521a\u624d\u5df2\u7ecf\u7b97\u51fa\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a200.15.10.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a200.15.10.7<\/li>\n<\/ul>\n\n\n\n<p>\u800c\u9ed8\u8ba4\u7f51\u5173\u5fc5\u987b\u662f<strong>\u540c\u4e00\u5b50\u7f51\u4e2d\u7684\u67d0\u4e2a\u5408\u6cd5\u4e3b\u673a\u5730\u5740<\/strong>\uff0c\u4e5f\u5c31\u662f\u5e94\u8be5\u843d\u5728\uff1a<\/p>\n\n\n\n<p><code>200.15.10.1 ~ 200.15.10.6<\/code><\/p>\n\n\n\n<p>\u4f46\u662f <code>.7<\/code> \u662f\u8fd9\u4e2a\u5757\u7684\u6700\u540e\u4e00\u4e2a\u5730\u5740\uff0c\u4e5f\u5c31\u662f\u5e7f\u64ad\u5730\u5740\uff0c\u4e0d\u662f\u5408\u6cd5\u4e3b\u673a\u5730\u5740\u3002<br>\u6240\u4ee5\u5b83\u4e0d\u80fd\u4f5c\u4e3a\u9ed8\u8ba4\u7f51\u5173\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u5e7f\u64ad\u5730\u5740\u662f\u4e0d\u662f\u201c\u8fd9\u4e2a\u5757\u7684\u6700\u540e\u4e00\u4f4d\u201d\uff1f<\/h2>\n\n\n\n<p>\u8fd9\u4e2a\u7406\u89e3\u57fa\u672c\u662f\u5bf9\u7684\uff0c\u4f46\u6700\u597d\u8bf4\u5f97\u66f4\u51c6\u786e\u4e00\u70b9\uff1a<\/p>\n\n\n\n<p><strong>\u5e7f\u64ad\u5730\u5740\u5c31\u662f\u8fd9\u4e2a\u5757\u4e2d\u7684\u6700\u540e\u4e00\u4e2a\u5730\u5740\u3002<\/strong><\/p>\n\n\n\n<p>\u6bd4\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5757\u662f 0~7\uff0c\u90a3\u4e48\u5e7f\u64ad\u5730\u5740\u5c31\u662f 7<\/li>\n\n\n\n<li>\u5757\u662f 32~63\uff0c\u90a3\u4e48\u5e7f\u64ad\u5730\u5740\u5c31\u662f 63<\/li>\n\n\n\n<li>\u5757\u662f 64~95\uff0c\u90a3\u4e48\u5e7f\u64ad\u5730\u5740\u5c31\u662f 95<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u53ef\u4ee5\u8bb0\u6210\uff1a<\/p>\n\n\n\n<p><strong>\u7f51\u7edc\u5730\u5740 = \u8fd9\u4e2a\u5757\u7684\u8d77\u70b9<\/strong><br><strong>\u5e7f\u64ad\u5730\u5740 = \u8fd9\u4e2a\u5757\u7684\u7ec8\u70b9<\/strong><\/p>\n\n\n\n<p>\u8fd9\u4e2a\u8bf4\u6cd5\u5728\u8003\u8bd5\u91cc\u975e\u5e38\u597d\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\">\u4e03\u3001\u4e3a\u4ec0\u4e48\u201c\u7f51\u7edc\u5730\u5740\u662f\u5757\u8d77\u70b9\uff0c\u5e7f\u64ad\u5730\u5740\u662f\u5757\u7ec8\u70b9\u201d<\/h2>\n\n\n\n<p>\u56e0\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a\u4e3b\u673a\u4f4d\u5168 0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a\u4e3b\u673a\u4f4d\u5168 1<\/li>\n<\/ul>\n\n\n\n<p>\u800c\u4e00\u4e2a\u5757\u672c\u8d28\u4e0a\u5c31\u662f\u201c\u7f51\u7edc\u4f4d\u56fa\u5b9a\u3001\u4e3b\u673a\u4f4d\u53d8\u5316\u201d\u7684\u5168\u90e8\u7ec4\u5408\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3b\u673a\u4f4d\u6700\u5c0f\uff0c\u4e5f\u5c31\u662f\u5168 0 \u2192 \u5757\u8d77\u70b9 \u2192 \u7f51\u7edc\u5730\u5740<\/li>\n\n\n\n<li>\u4e3b\u673a\u4f4d\u6700\u5927\uff0c\u4e5f\u5c31\u662f\u5168 1 \u2192 \u5757\u7ec8\u70b9 \u2192 \u5e7f\u64ad\u5730\u5740<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u80cc\u540e\u5176\u5b9e\u5c31\u662f\u4e8c\u8fdb\u5236\u5927\u5c0f\u89c4\u5f8b\uff0c\u53ea\u4e0d\u8fc7\u8003\u8bd5\u91cc\u4e0d\u9700\u8981\u6bcf\u6b21\u5c55\u5f00\u5199\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516b\u3001\u8003\u573a\u4e0a\u6700\u5feb\u7684\u505a\u9898\u6a21\u677f<\/h2>\n\n\n\n<p>\u4ee5\u540e\u9047\u5230\u201c\u4e3b\u673a\u5730\u5740 \/ \u524d\u7f00\u957f\u5ea6\uff0c\u6c42\u7f51\u7edc\u5730\u5740\u3001\u5e7f\u64ad\u5730\u5740\u3001\u4e3b\u673a\u8303\u56f4\u201d\u8fd9\u7c7b\u9898\uff0c\u76f4\u63a5\u6309\u4e0b\u9762\u505a\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6a21\u677f<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">1. \u5148\u628a\u524d\u7f00\u6362\u6210\u719f\u6089\u7684\u63a9\u7801<\/h4>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\/29 \u2192 255.255.255.248<\/li>\n\n\n\n<li>\/27 \u2192 255.255.255.224<\/li>\n\n\n\n<li>\/22 \u2192 255.255.252.0<\/li>\n\n\n\n<li>\/20 \u2192 255.255.240.0<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">2. \u627e\u5173\u952e\u5b57\u8282<\/h4>\n\n\n\n<p>\u4e5f\u5c31\u662f\u7b2c\u4e00\u4e2a\u4e0d\u662f 255 \u4e5f\u4e0d\u662f 0 \u7684\u5b57\u8282\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">3. \u6c42\u5757\u5927\u5c0f<\/h4>\n\n\n\n<p><code>\u5757\u5927\u5c0f = 256 - \u5173\u952e\u5b57\u8282<\/code><\/p>\n\n\n\n<h4 class=\"wp-block-heading\">4. \u770b\u4e3b\u673a\u5730\u5740\u5728\u8fd9\u4e2a\u5b57\u8282\u4e0a\u7684\u503c\u843d\u5728\u54ea\u4e2a\u533a\u95f4<\/h4>\n\n\n\n<p>\u533a\u95f4\u8d77\u70b9\u5c31\u662f\u7f51\u7edc\u5730\u5740\u8be5\u5b57\u8282\u503c\uff0c<br>\u533a\u95f4\u7ec8\u70b9\u5c31\u662f\u5e7f\u64ad\u5730\u5740\u8be5\u5b57\u8282\u503c\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">5. \u5199\u5b8c\u6574\u5730\u5740<\/h4>\n\n\n\n<p>\u524d\u9762\u4e0d\u53d8\uff0c\u5173\u952e\u5b57\u8282\u6539\u6210\u533a\u95f4\u8d77\u70b9\u6216\u7ec8\u70b9\uff0c\u540e\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\u540e\u9762\u7684\u5b57\u8282\u5168\u5199 0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\u540e\u9762\u7684\u5b57\u8282\u5168\u5199 255<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e5d\u3001\u518d\u8865\u4e24\u4e2a\u6700\u5e94\u8be5\u719f\u7ec3\u7684\u4f8b\u5b50<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f8b 1\uff1a172.16.10.66\/27<\/h3>\n\n\n\n<p><code>\/27 = 255.255.255.224<\/code><\/p>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 224 = 32<\/code><\/p>\n\n\n\n<p>\u6700\u540e\u4e00\u4e2a\u5b57\u8282\u6309 32 \u5206\u5757\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~31<\/li>\n\n\n\n<li>32~63<\/li>\n\n\n\n<li>64~95<\/li>\n\n\n\n<li>96~127<\/li>\n<\/ul>\n\n\n\n<p>66 \u843d\u5728 <code>64~95<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a172.16.10.64<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a172.16.10.95<\/li>\n\n\n\n<li>\u4e3b\u673a\u8303\u56f4\uff1a172.16.10.65 ~ 172.16.10.94<\/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\">\u4f8b 2\uff1a126.166.66.99\/22<\/h3>\n\n\n\n<p><code>\/22 = 255.255.252.0<\/code><\/p>\n\n\n\n<p>\u5173\u952e\u5b57\u8282\u662f\u7b2c\u4e09\u4e2a\u5b57\u8282 252\u3002<\/p>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 252 = 4<\/code><\/p>\n\n\n\n<p>\u7b2c\u4e09\u4e2a\u5b57\u8282\u6309 4 \u5206\u5757\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~3<\/li>\n\n\n\n<li>4~7<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>64~67<\/li>\n\n\n\n<li>68~71<\/li>\n\n\n\n<li>\u2026<\/li>\n<\/ul>\n\n\n\n<p>66 \u843d\u5728 <code>64~67<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a126.166.64.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a126.166.67.255<\/li>\n\n\n\n<li>\u4e3b\u673a\u8303\u56f4\uff1a126.166.64.1 ~ 126.166.67.254<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5341\u3001\u6700\u540e\u628a\u8fd9\u4e00\u6574\u5757\u538b\u6210\u4e00\u53e5\u53e3\u8bc0<\/h2>\n\n\n\n<p>\u53ef\u4ee5\u8bb0\u6210\u8fd9\u6837\uff1a<\/p>\n\n\n\n<p><strong>\u5148\u627e\u63a9\u7801\u524d\u7f00\uff0c\u540e\u627e\u5173\u952e\u5b57\u8282\uff1b\u5757\u5927\u5c0f\u7528 256 \u51cf\uff1b\u4e3b\u673a\u843d\u5728\u54ea\u4e00\u5757\uff0c\u5757\u5934\u5c31\u662f\u7f51\u7edc\u5730\u5740\uff0c\u5757\u5c3e\u5c31\u662f\u5e7f\u64ad\u5730\u5740\u3002<\/strong><\/p>\n\n\n\n<p>\u518d\u538b\u7f29\u4e00\u70b9\u5c31\u662f\uff1a<\/p>\n\n\n\n<p><strong>255 \u5168\u7b97\u6ee1\uff0c0 \u5168\u4e0d\u7b97\uff1b\u4e2d\u95f4\u90a3\u4e2a\u6700\u5173\u952e\uff0c256 \u4e00\u51cf\u770b\u5206\u6bb5\uff1b\u843d\u5728\u54ea\u6bb5\u5c31\u5f52\u54ea\u7f51\uff0c\u6bb5\u9996\u7f51\u7edc\u3001\u6bb5\u5c3e\u5e7f\u64ad\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\">\u5341\u4e00\u3001\u8fd9\u4e00\u5757\u6700\u5bb9\u6613\u9519\u7684\u5730\u65b9<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1. \u628a\u5e7f\u64ad\u5730\u5740\u5f53\u6210\u53ef\u5206\u914d\u4e3b\u673a\u5730\u5740<\/h3>\n\n\n\n<p>\u50cf <code>200.15.10.7\/29<\/code> \u8fd9\u79cd\uff0c\u6700\u5bb9\u6613\u8bef\u5f53\u6210\u4e00\u4e2a\u666e\u901a\u5730\u5740\u3002<br>\u4f46\u5b83\u5176\u5b9e\u662f 0~7 \u8fd9\u4e2a\u5757\u7684\u6700\u540e\u4e00\u4e2a\u5730\u5740\uff0c\u4e5f\u5c31\u662f\u5e7f\u64ad\u5730\u5740\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">2. \u53ea\u4f1a\u6c42\u5757\u5927\u5c0f\uff0c\u4e0d\u4f1a\u5b9a\u4f4d\u843d\u5728\u54ea\u4e2a\u5757<\/h3>\n\n\n\n<p>\u77e5\u9053 \/29 \u5757\u5927\u5c0f\u662f 8 \u8fd8\u4e0d\u591f\uff0c\u5173\u952e\u662f\u8fd8\u8981\u7acb\u523b\u770b\u5230\uff1a<br>6 \u843d\u5728 0~7\uff0c\u6240\u4ee5\u7f51\u7edc\u5730\u5740\u5c31\u662f 0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">3. \u770b\u5230 CIDR \u8868\u793a\u65f6\uff0c\u4ee5\u4e3a\u5199\u51fa\u6765\u7684\u90a3\u4e2a\u5730\u5740\u5c31\u662f\u7f51\u7edc\u5730\u5740<\/h3>\n\n\n\n<p>\u4f8b\u5982 <code>192.168.10.0\/20<\/code>\uff0c\u5f88\u591a\u4eba\u4f1a\u8bef\u4ee5\u4e3a\u7f51\u7edc\u5730\u5740\u5c31\u662f <code>192.168.10.0<\/code>\u3002<br>\u5176\u5b9e \/20 \u7684\u5757\u5927\u5c0f\u662f 16\uff0c10 \u843d\u5728 0~15\uff0c\u6240\u4ee5\u771f\u6b63\u7f51\u7edc\u5730\u5740\u662f <code>192.168.0.0<\/code>\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u5e38\u89c1\u524d\u7f00\u957f\u5ea6\u4e0e\u5757\u5927\u5c0f\u901f\u67e5\u8868<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u5f20\u8868\u5176\u5b9e\u5c31\u662f\u505a IPv4 \u5b50\u7f51\u9898\u6700\u8be5\u80cc\u4e0b\u6765\u7684\u4e1c\u897f\u3002<br>\u53ea\u8981\u628a\u5b83\u80cc\u719f\uff0c\u5f88\u591a\u9898\u5c31\u4e0d\u9700\u8981\u518d\u4e34\u65f6\u7b97\u4e8c\u8fdb\u5236\u4e86\uff0c\u5c24\u5176\u662f \/20 \u5230 \/30 \u8fd9\u4e00\u6bb5\uff0c\u51e0\u4e4e\u662f\u8003\u8bd5\u9ad8\u9891\u533a\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u5148\u8bb0\u4f4f\u6700\u6838\u5fc3\u7684\u6362\u7b97\u8868<\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u524d\u7f00\u957f\u5ea6<\/th><th>\u5b50\u7f51\u63a9\u7801<\/th><th>\u5173\u952e\u5b57\u8282<\/th><th>\u5757\u5927\u5c0f<\/th><\/tr><\/thead><tbody><tr><td>\/20<\/td><td>255.255.240.0<\/td><td>240<\/td><td>16<\/td><\/tr><tr><td>\/21<\/td><td>255.255.248.0<\/td><td>248<\/td><td>8<\/td><\/tr><tr><td>\/22<\/td><td>255.255.252.0<\/td><td>252<\/td><td>4<\/td><\/tr><tr><td>\/23<\/td><td>255.255.254.0<\/td><td>254<\/td><td>2<\/td><\/tr><tr><td>\/24<\/td><td>255.255.255.0<\/td><td>255<\/td><td>1 \u4e2a C \u7c7b\u7f51\u6bb5<\/td><\/tr><tr><td>\/25<\/td><td>255.255.255.128<\/td><td>128<\/td><td>128<\/td><\/tr><tr><td>\/26<\/td><td>255.255.255.192<\/td><td>192<\/td><td>64<\/td><\/tr><tr><td>\/27<\/td><td>255.255.255.224<\/td><td>224<\/td><td>32<\/td><\/tr><tr><td>\/28<\/td><td>255.255.255.240<\/td><td>240<\/td><td>16<\/td><\/tr><tr><td>\/29<\/td><td>255.255.255.248<\/td><td>248<\/td><td>8<\/td><\/tr><tr><td>\/30<\/td><td>255.255.255.252<\/td><td>252<\/td><td>4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u8fd9\u91cc\u8981\u6ce8\u610f\u4e00\u4ef6\u4e8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\/20 ~ \/23<\/code> \u7684\u5757\u5927\u5c0f\uff0c\u901a\u5e38\u4f53\u73b0\u5728<strong>\u7b2c\u4e09\u4e2a\u5b57\u8282<\/strong><\/li>\n\n\n\n<li><code>\/25 ~ \/30<\/code> \u7684\u5757\u5927\u5c0f\uff0c\u901a\u5e38\u4f53\u73b0\u5728<strong>\u7b2c\u56db\u4e2a\u5b57\u8282<\/strong><\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u505a\u9898\u65f6\uff0c\u522b\u53ea\u8bb0\u5757\u5927\u5c0f\uff0c\u8fd8\u8981\u77e5\u9053\u5b83\u662f\u5728\u54ea\u4e2a\u5b57\u8282\u4e0a\u5206\u5757\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\/20 \u5230 \/23\uff1a\u7b2c\u4e09\u4e2a\u5b57\u8282\u600e\u4e48\u5206\u6bb5<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u6bb5\u7ecf\u5e38\u7528\u4e8e CIDR \u5730\u5740\u5757\u8303\u56f4\u9898\u3001\u8def\u7531\u805a\u5408\u9898\u3001\u7f51\u7edc\u5730\u5740\u4e0e\u5e7f\u64ad\u5730\u5740\u5224\u65ad\u9898\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\/20 = 255.255.240.0<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 240 = 16<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c\u4e09\u4e2a\u5b57\u8282\u6309 16 \u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~15<\/li>\n\n\n\n<li>16~31<\/li>\n\n\n\n<li>32~47<\/li>\n\n\n\n<li>48~63<\/li>\n\n\n\n<li>64~79<\/li>\n\n\n\n<li>80~95<\/li>\n\n\n\n<li>96~111<\/li>\n\n\n\n<li>112~127<\/li>\n\n\n\n<li>128~143<\/li>\n\n\n\n<li>144~159<\/li>\n\n\n\n<li>160~175<\/li>\n\n\n\n<li>176~191<\/li>\n\n\n\n<li>192~207<\/li>\n\n\n\n<li>208~223<\/li>\n\n\n\n<li>224~239<\/li>\n\n\n\n<li>240~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5feb\u901f\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>192.168.10.0\/20<\/code><\/p>\n\n\n\n<p>\u7b2c\u4e09\u4e2a\u5b57\u8282\u662f 10\uff0c\u843d\u5728 <code>0~15<\/code>\uff0c\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a192.168.0.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a192.168.15.255<\/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\">\/21 = 255.255.248.0<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 248 = 8<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c\u4e09\u4e2a\u5b57\u8282\u6309 8 \u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~7<\/li>\n\n\n\n<li>8~15<\/li>\n\n\n\n<li>16~23<\/li>\n\n\n\n<li>24~31<\/li>\n\n\n\n<li>32~39<\/li>\n\n\n\n<li>40~47<\/li>\n\n\n\n<li>48~55<\/li>\n\n\n\n<li>56~63<\/li>\n\n\n\n<li>64~71<\/li>\n\n\n\n<li>72~79<\/li>\n\n\n\n<li>80~87<\/li>\n\n\n\n<li>88~95<\/li>\n\n\n\n<li>96~103<\/li>\n\n\n\n<li>104~111<\/li>\n\n\n\n<li>112~119<\/li>\n\n\n\n<li>120~127<\/li>\n\n\n\n<li>128~135<\/li>\n\n\n\n<li>136~143<\/li>\n\n\n\n<li>144~151<\/li>\n\n\n\n<li>152~159<\/li>\n\n\n\n<li>160~167<\/li>\n\n\n\n<li>168~175<\/li>\n\n\n\n<li>176~183<\/li>\n\n\n\n<li>184~191<\/li>\n\n\n\n<li>192~199<\/li>\n\n\n\n<li>200~207<\/li>\n\n\n\n<li>208~215<\/li>\n\n\n\n<li>216~223<\/li>\n\n\n\n<li>224~231<\/li>\n\n\n\n<li>232~239<\/li>\n\n\n\n<li>240~247<\/li>\n\n\n\n<li>248~255<\/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\">\/22 = 255.255.252.0<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 252 = 4<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c\u4e09\u4e2a\u5b57\u8282\u6309 4 \u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~3<\/li>\n\n\n\n<li>4~7<\/li>\n\n\n\n<li>8~11<\/li>\n\n\n\n<li>12~15<\/li>\n\n\n\n<li>16~19<\/li>\n\n\n\n<li>20~23<\/li>\n\n\n\n<li>24~27<\/li>\n\n\n\n<li>28~31<\/li>\n\n\n\n<li>32~35<\/li>\n\n\n\n<li>36~39<\/li>\n\n\n\n<li>40~43<\/li>\n\n\n\n<li>44~47<\/li>\n\n\n\n<li>48~51<\/li>\n\n\n\n<li>52~55<\/li>\n\n\n\n<li>56~59<\/li>\n\n\n\n<li>60~63<\/li>\n\n\n\n<li>64~67<\/li>\n\n\n\n<li>68~71<\/li>\n\n\n\n<li>72~75<\/li>\n\n\n\n<li>76~79<\/li>\n\n\n\n<li>80~83<\/li>\n\n\n\n<li>84~87<\/li>\n\n\n\n<li>88~91<\/li>\n\n\n\n<li>92~95<\/li>\n\n\n\n<li>96~99<\/li>\n\n\n\n<li>100~103<\/li>\n\n\n\n<li>104~107<\/li>\n\n\n\n<li>108~111<\/li>\n\n\n\n<li>112~115<\/li>\n\n\n\n<li>116~119<\/li>\n\n\n\n<li>120~123<\/li>\n\n\n\n<li>124~127<\/li>\n\n\n\n<li>128~131<\/li>\n\n\n\n<li>132~135<\/li>\n\n\n\n<li>136~139<\/li>\n\n\n\n<li>140~143<\/li>\n\n\n\n<li>144~147<\/li>\n\n\n\n<li>148~151<\/li>\n\n\n\n<li>152~155<\/li>\n\n\n\n<li>156~159<\/li>\n\n\n\n<li>160~163<\/li>\n\n\n\n<li>164~167<\/li>\n\n\n\n<li>168~171<\/li>\n\n\n\n<li>172~175<\/li>\n\n\n\n<li>176~179<\/li>\n\n\n\n<li>180~183<\/li>\n\n\n\n<li>184~187<\/li>\n\n\n\n<li>188~191<\/li>\n\n\n\n<li>192~195<\/li>\n\n\n\n<li>196~199<\/li>\n\n\n\n<li>200~203<\/li>\n\n\n\n<li>204~207<\/li>\n\n\n\n<li>208~211<\/li>\n\n\n\n<li>212~215<\/li>\n\n\n\n<li>216~219<\/li>\n\n\n\n<li>220~223<\/li>\n\n\n\n<li>224~227<\/li>\n\n\n\n<li>228~231<\/li>\n\n\n\n<li>232~235<\/li>\n\n\n\n<li>236~239<\/li>\n\n\n\n<li>240~243<\/li>\n\n\n\n<li>244~247<\/li>\n\n\n\n<li>248~251<\/li>\n\n\n\n<li>252~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5feb\u901f\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>126.166.66.99\/22<\/code><\/p>\n\n\n\n<p>\u7b2c\u4e09\u4e2a\u5b57\u8282 66 \u843d\u5728 <code>64~67<\/code>\uff0c\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a126.166.64.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a126.166.67.255<\/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\">\/23 = 255.255.254.0<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 254 = 2<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\u7b2c\u4e09\u4e2a\u5b57\u8282\u6309 2 \u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~1<\/li>\n\n\n\n<li>2~3<\/li>\n\n\n\n<li>4~5<\/li>\n\n\n\n<li>6~7<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>64~65<\/li>\n\n\n\n<li>66~67<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>254~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5feb\u901f\u4f8b\u5b50<\/h4>\n\n\n\n<p>\u82e5\u5730\u5740\u662f <code>172.16.10.6\/23<\/code><\/p>\n\n\n\n<p>\u7b2c\u4e09\u4e2a\u5b57\u8282 10 \u843d\u5728 <code>10~11<\/code>\uff0c\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a172.16.10.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a172.16.11.255<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001\/24 \u5230 \/30\uff1a\u7b2c\u56db\u4e2a\u5b57\u8282\u600e\u4e48\u5206\u6bb5<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u6bb5\u662f\u5b50\u7f51\u5212\u5206\u9898\u6700\u5e38\u8003\u7684\u90e8\u5206\uff0c\u5c24\u5176 \/26\u3001\/27\u3001\/28\u3001\/29\u3001\/30\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\/24 = 255.255.255.0<\/h3>\n\n\n\n<p>\u8fd9\u4e00\u7c7b\u6700\u7b80\u5355\uff0c\u6574\u4e2a\u7b2c\u56db\u4e2a\u5b57\u8282\u90fd\u662f\u4e3b\u673a\u53f7\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a\u7b2c\u56db\u4e2a\u5b57\u8282 = 0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a\u7b2c\u56db\u4e2a\u5b57\u8282 = 255<\/li>\n\n\n\n<li>\u4e3b\u673a\u8303\u56f4\uff1a1~254<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>192.168.1.25\/24<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a192.168.1.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a192.168.1.255<\/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\">\/25 = 255.255.255.128<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 128 = 128<\/code><\/p>\n\n\n\n<p>\u7b2c\u56db\u4e2a\u5b57\u8282\u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~127<\/li>\n\n\n\n<li>128~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>192.168.1.130\/25<\/code><\/p>\n\n\n\n<p>130 \u843d\u5728 <code>128~255<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a192.168.1.128<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a192.168.1.255<\/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\">\/26 = 255.255.255.192<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 192 = 64<\/code><\/p>\n\n\n\n<p>\u7b2c\u56db\u4e2a\u5b57\u8282\u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~63<\/li>\n\n\n\n<li>64~127<\/li>\n\n\n\n<li>128~191<\/li>\n\n\n\n<li>192~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>192.168.1.130\/26<\/code><\/p>\n\n\n\n<p>130 \u843d\u5728 <code>128~191<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a192.168.1.128<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a192.168.1.191<\/li>\n\n\n\n<li>\u4e3b\u673a\u8303\u56f4\uff1a129~190<\/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\">\/27 = 255.255.255.224<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 224 = 32<\/code><\/p>\n\n\n\n<p>\u7b2c\u56db\u4e2a\u5b57\u8282\u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~31<\/li>\n\n\n\n<li>32~63<\/li>\n\n\n\n<li>64~95<\/li>\n\n\n\n<li>96~127<\/li>\n\n\n\n<li>128~159<\/li>\n\n\n\n<li>160~191<\/li>\n\n\n\n<li>192~223<\/li>\n\n\n\n<li>224~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>172.16.10.66\/27<\/code><\/p>\n\n\n\n<p>66 \u843d\u5728 <code>64~95<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a172.16.10.64<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a172.16.10.95<\/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\">\/28 = 255.255.255.240<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 240 = 16<\/code><\/p>\n\n\n\n<p>\u7b2c\u56db\u4e2a\u5b57\u8282\u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~15<\/li>\n\n\n\n<li>16~31<\/li>\n\n\n\n<li>32~47<\/li>\n\n\n\n<li>48~63<\/li>\n\n\n\n<li>64~79<\/li>\n\n\n\n<li>80~95<\/li>\n\n\n\n<li>96~111<\/li>\n\n\n\n<li>112~127<\/li>\n\n\n\n<li>128~143<\/li>\n\n\n\n<li>144~159<\/li>\n\n\n\n<li>160~175<\/li>\n\n\n\n<li>176~191<\/li>\n\n\n\n<li>192~207<\/li>\n\n\n\n<li>208~223<\/li>\n\n\n\n<li>224~239<\/li>\n\n\n\n<li>240~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>192.16.0.19\/28<\/code><\/p>\n\n\n\n<p>19 \u843d\u5728 <code>16~31<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a192.16.0.16<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a192.16.0.31<\/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\">\/29 = 255.255.255.248<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 248 = 8<\/code><\/p>\n\n\n\n<p>\u7b2c\u56db\u4e2a\u5b57\u8282\u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~7<\/li>\n\n\n\n<li>8~15<\/li>\n\n\n\n<li>16~23<\/li>\n\n\n\n<li>24~31<\/li>\n\n\n\n<li>32~39<\/li>\n\n\n\n<li>40~47<\/li>\n\n\n\n<li>48~55<\/li>\n\n\n\n<li>56~63<\/li>\n\n\n\n<li>64~71<\/li>\n\n\n\n<li>72~79<\/li>\n\n\n\n<li>80~87<\/li>\n\n\n\n<li>88~95<\/li>\n\n\n\n<li>96~103<\/li>\n\n\n\n<li>104~111<\/li>\n\n\n\n<li>112~119<\/li>\n\n\n\n<li>120~127<\/li>\n\n\n\n<li>128~135<\/li>\n\n\n\n<li>136~143<\/li>\n\n\n\n<li>144~151<\/li>\n\n\n\n<li>152~159<\/li>\n\n\n\n<li>160~167<\/li>\n\n\n\n<li>168~175<\/li>\n\n\n\n<li>176~183<\/li>\n\n\n\n<li>184~191<\/li>\n\n\n\n<li>192~199<\/li>\n\n\n\n<li>200~207<\/li>\n\n\n\n<li>208~215<\/li>\n\n\n\n<li>216~223<\/li>\n\n\n\n<li>224~231<\/li>\n\n\n\n<li>232~239<\/li>\n\n\n\n<li>240~247<\/li>\n\n\n\n<li>248~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>200.15.10.6\/29<\/code><\/p>\n\n\n\n<p>6 \u843d\u5728 <code>0~7<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a200.15.10.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a200.15.10.7<\/li>\n\n\n\n<li>\u4e3b\u673a\u8303\u56f4\uff1a200.15.10.1 ~ 200.15.10.6<\/li>\n<\/ul>\n\n\n\n<p>\u6240\u4ee5\u9ed8\u8ba4\u7f51\u5173\u82e5\u914d\u6210 <code>200.15.10.7<\/code> \u5c31\u9519\u4e86\uff0c\u56e0\u4e3a\u90a3\u662f\u5e7f\u64ad\u5730\u5740\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">\/30 = 255.255.255.252<\/h3>\n\n\n\n<p>\u5757\u5927\u5c0f\uff1a<\/p>\n\n\n\n<p><code>256 - 252 = 4<\/code><\/p>\n\n\n\n<p>\u7b2c\u56db\u4e2a\u5b57\u8282\u5206\u6bb5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0~3<\/li>\n\n\n\n<li>4~7<\/li>\n\n\n\n<li>8~11<\/li>\n\n\n\n<li>12~15<\/li>\n\n\n\n<li>16~19<\/li>\n\n\n\n<li>20~23<\/li>\n\n\n\n<li>24~27<\/li>\n\n\n\n<li>\u2026<\/li>\n\n\n\n<li>252~255<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4f8b\u5b50<\/h4>\n\n\n\n<p><code>10.0.0.6\/30<\/code><\/p>\n\n\n\n<p>6 \u843d\u5728 <code>4~7<\/code><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a10.0.0.4<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a10.0.0.7<\/li>\n\n\n\n<li>\u4e3b\u673a\u8303\u56f4\uff1a10.0.0.5 ~ 10.0.0.6<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48 \/30 \u5e38\u7528\u4e8e\u70b9\u5bf9\u70b9\u94fe\u8def\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u5982\u4f55\u4e0d\u9760\u5b8c\u6574\u5217\u6bb5\uff0c\u800c\u662f\u76f4\u63a5\u201c\u53e3\u7b97\u5b9a\u4f4d\u201d<\/h2>\n\n\n\n<p>\u867d\u7136\u4e0a\u9762\u5206\u6bb5\u8868\u5f88\u6709\u7528\uff0c\u4f46\u8003\u8bd5\u65f6\u4e0d\u53ef\u80fd\u6bcf\u9898\u90fd\u4ece\u5934\u626b\u4e00\u904d\u3002<br>\u66f4\u5feb\u7684\u65b9\u6cd5\u662f\u76f4\u63a5\u505a\u201c\u6574\u9664\u5b9a\u4f4d\u201d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u65b9\u6cd5<\/h3>\n\n\n\n<p>\u8bbe\u5757\u5927\u5c0f\u4e3a <code>k<\/code>\uff0c\u5173\u952e\u5b57\u8282\u6570\u503c\u4e3a <code>x<\/code>\u3002<\/p>\n\n\n\n<p>\u5219\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5757\u8d77\u70b9 = <code>x \/\/ k \u00d7 k<\/code><\/li>\n\n\n\n<li>\u5757\u7ec8\u70b9 = <code>\u5757\u8d77\u70b9 + k - 1<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u91cc\u7684 <code>\/\/<\/code> \u8868\u793a\u6574\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\">\u4f8b 1\uff1a200.15.10.6\/29<\/h3>\n\n\n\n<p><code>\/29<\/code> \u2192 \u5757\u5927\u5c0f 8<br>\u5173\u952e\u5b57\u8282 <code>x = 6<\/code><\/p>\n\n\n\n<p>\u5757\u8d77\u70b9\uff1a<\/p>\n\n\n\n<p><code>6 \/\/ 8 \u00d7 8 = 0<\/code><\/p>\n\n\n\n<p>\u5757\u7ec8\u70b9\uff1a<\/p>\n\n\n\n<p><code>0 + 8 - 1 = 7<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a200.15.10.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a200.15.10.7<\/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\">\u4f8b 2\uff1a172.16.10.66\/27<\/h3>\n\n\n\n<p><code>\/27<\/code> \u2192 \u5757\u5927\u5c0f 32<br>\u5173\u952e\u5b57\u8282 <code>x = 66<\/code><\/p>\n\n\n\n<p>\u5757\u8d77\u70b9\uff1a<\/p>\n\n\n\n<p><code>66 \/\/ 32 \u00d7 32 = 64<\/code><\/p>\n\n\n\n<p>\u5757\u7ec8\u70b9\uff1a<\/p>\n\n\n\n<p><code>64 + 32 - 1 = 95<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a172.16.10.64<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a172.16.10.95<\/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\">\u4f8b 3\uff1a126.166.66.99\/22<\/h3>\n\n\n\n<p><code>\/22<\/code> \u2192 \u7b2c\u4e09\u4e2a\u5b57\u8282\u5757\u5927\u5c0f 4<br>\u5173\u952e\u5b57\u8282 <code>x = 66<\/code><\/p>\n\n\n\n<p>\u5757\u8d77\u70b9\uff1a<\/p>\n\n\n\n<p><code>66 \/\/ 4 \u00d7 4 = 64<\/code><\/p>\n\n\n\n<p>\u5757\u7ec8\u70b9\uff1a<\/p>\n\n\n\n<p><code>64 + 4 - 1 = 67<\/code><\/p>\n\n\n\n<p>\u6240\u4ee5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a126.166.64.0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a126.166.67.255<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001\u4e3a\u4ec0\u4e48\u5e7f\u64ad\u5730\u5740\u603b\u662f\u201c\u5757\u7684\u6700\u540e\u4e00\u4e2a\u5730\u5740\u201d<\/h2>\n\n\n\n<p>\u56e0\u4e3a\u4e00\u4e2a\u5757\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740\uff1a\u4e3b\u673a\u4f4d\u5168 0<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740\uff1a\u4e3b\u673a\u4f4d\u5168 1<\/li>\n<\/ul>\n\n\n\n<p>\u800c\u5757\u7684\u8d77\u70b9\u5c31\u662f\u4e3b\u673a\u4f4d\u5168 0\uff0c<br>\u5757\u7684\u7ec8\u70b9\u5c31\u662f\u4e3b\u673a\u4f4d\u5168 1\u3002<\/p>\n\n\n\n<p>\u6240\u4ee5\u5b8c\u5168\u53ef\u4ee5\u76f4\u63a5\u8bb0\u6210\uff1a<\/p>\n\n\n\n<p><strong>\u6bb5\u9996\u662f\u7f51\u7edc\u5730\u5740\uff0c\u6bb5\u5c3e\u662f\u5e7f\u64ad\u5730\u5740\u3002<\/strong><\/p>\n\n\n\n<p>\u8fd9\u4e2a\u8bb0\u5fc6\u6cd5\u5728\u8003\u573a\u4e0a\u975e\u5e38\u9ad8\u6548\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001\u6700\u503c\u5f97\u6b7b\u8bb0\u7684\u51e0\u4e2a\u9ad8\u9891\u5757\u5927\u5c0f<\/h2>\n\n\n\n<p>\u4e0b\u9762\u8fd9\u4e9b\u51e0\u4e4e\u5fc5\u987b\u4e00\u773c\u8ba4\u51fa\u6765\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u524d\u7f00<\/th><th>\u63a9\u7801<\/th><th>\u5757\u5927\u5c0f<\/th><\/tr><\/thead><tbody><tr><td>\/20<\/td><td>255.255.240.0<\/td><td>16<\/td><\/tr><tr><td>\/21<\/td><td>255.255.248.0<\/td><td>8<\/td><\/tr><tr><td>\/22<\/td><td>255.255.252.0<\/td><td>4<\/td><\/tr><tr><td>\/23<\/td><td>255.255.254.0<\/td><td>2<\/td><\/tr><tr><td>\/24<\/td><td>255.255.255.0<\/td><td>1 \u4e2a\u6574\u6bb5<\/td><\/tr><tr><td>\/25<\/td><td>255.255.255.128<\/td><td>128<\/td><\/tr><tr><td>\/26<\/td><td>255.255.255.192<\/td><td>64<\/td><\/tr><tr><td>\/27<\/td><td>255.255.255.224<\/td><td>32<\/td><\/tr><tr><td>\/28<\/td><td>255.255.255.240<\/td><td>16<\/td><\/tr><tr><td>\/29<\/td><td>255.255.255.248<\/td><td>8<\/td><\/tr><tr><td>\/30<\/td><td>255.255.255.252<\/td><td>4<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5176\u4e2d\u5c24\u5176\u8981\u719f\u7ec3\u7684\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\/26 \u2192 64<\/code><\/li>\n\n\n\n<li><code>\/27 \u2192 32<\/code><\/li>\n\n\n\n<li><code>\/28 \u2192 16<\/code><\/li>\n\n\n\n<li><code>\/29 \u2192 8<\/code><\/li>\n\n\n\n<li><code>\/30 \u2192 4<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u4e3a\u8fd9\u4e00\u7ec4\u662f\u6700\u5e38\u8003\u7684\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u6700\u540e\u538b\u6210\u4e00\u4e2a\u8003\u573a\u53ef\u76f4\u63a5\u7528\u7684\u6a21\u677f<\/h2>\n\n\n\n<p>\u4ee5\u540e\u78b0\u5230\u8fd9\u7c7b\u9898\uff0c\u6309\u4e0b\u9762\u4e94\u6b65\u8d70\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u6b65\uff1a\u770b\u524d\u7f00\u957f\u5ea6<\/h3>\n\n\n\n<p>\u5148\u77e5\u9053\u662f <code>\/27<\/code>\u3001<code>\/29<\/code> \u8fd8\u662f <code>\/22<\/code>\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u6b65\uff1a\u5199\u51fa\u6216\u76f4\u63a5\u53cd\u5e94\u51fa\u63a9\u7801<\/h3>\n\n\n\n<p>\u4f8b\u5982\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>\/27 \u2192 255.255.255.224<\/code><\/li>\n\n\n\n<li><code>\/29 \u2192 255.255.255.248<\/code><\/li>\n\n\n\n<li><code>\/22 \u2192 255.255.252.0<\/code><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e09\u6b65\uff1a\u627e\u5173\u952e\u5b57\u8282<\/h3>\n\n\n\n<p>\u4e5f\u5c31\u662f\u7b2c\u4e00\u4e2a\u4e0d\u662f 255 \u4e5f\u4e0d\u662f 0 \u7684\u5b57\u8282\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u56db\u6b65\uff1a\u7b97\u5757\u5927\u5c0f<\/h3>\n\n\n\n<p><code>256 - \u5173\u952e\u5b57\u8282<\/code><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e94\u6b65\uff1a\u5b9a\u4f4d\u533a\u95f4<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5757\u8d77\u70b9 = <code>x \/\/ \u5757\u5927\u5c0f \u00d7 \u5757\u5927\u5c0f<\/code><\/li>\n\n\n\n<li>\u5757\u7ec8\u70b9 = <code>\u5757\u8d77\u70b9 + \u5757\u5927\u5c0f - 1<\/code><\/li>\n<\/ul>\n\n\n\n<p>\u7136\u540e\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7f51\u7edc\u5730\u5740 = \u6bb5\u9996<\/li>\n\n\n\n<li>\u5e7f\u64ad\u5730\u5740 = \u6bb5\u5c3e<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">\u516b\u3001\u8fd9\u4e00\u90e8\u5206\u6700\u5b9e\u7528\u7684\u590d\u4e60\u5efa\u8bae<\/h2>\n\n\n\n<p>\u8fd9\u4e00\u5757\u4e0d\u5efa\u8bae\u53ea\u201c\u7406\u89e3\u201d\uff0c\u800c\u8981\u505a\u5230\u201c\u719f\u7ec3\u53e3\u7b97\u201d\u3002<br>\u771f\u6b63\u9ad8\u6548\u7684\u590d\u4e60\u65b9\u5f0f\u4e0d\u662f\u518d\u770b\u4e00\u904d\u6982\u5ff5\uff0c\u800c\u662f\u81ea\u5df1\u62ff\u4e0b\u9762\u8fd9\u4e9b\u524d\u7f00\u53cd\u590d\u7ec3\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\/26<\/li>\n\n\n\n<li>\/27<\/li>\n\n\n\n<li>\/28<\/li>\n\n\n\n<li>\/29<\/li>\n\n\n\n<li>\/30<\/li>\n\n\n\n<li>\/22<\/li>\n\n\n\n<li>\/20<\/li>\n<\/ul>\n\n\n\n<p>\u628a\u201c\u5757\u5927\u5c0f\u201d\u548c\u201c\u5206\u6bb5\u8fb9\u754c\u201d\u7ec3\u6210\u6761\u4ef6\u53cd\u5c04\uff0c\u540e\u9762\u7684\u9ed8\u8ba4\u7f51\u5173\u3001\u540c\u5b50\u7f51\u3001\u5e7f\u64ad\u5730\u5740\u3001CIDR \u8303\u56f4\uff0c\u90fd\u4f1a\u81ea\u7136\u8ddf\u7740\u53d8\u7b80\u5355\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u4e00\u5757\u786e\u5b9e\u662f IPv4 \u7f16\u5740\u91cc\u6700\u5bb9\u6613\u201c\u770b\u61c2\u4e86\u4f46\u505a\u9898\u6162\u201d\u7684\u5730\u65b9\u3002\u56e0\u4e3a\u539f\u7406\u5e76\u4e0d\u96be\uff0c\u96be\u7684\u662f\u8003\u573a\u4e0a\u4e0d\u80fd\u6bcf\u6b21\u90fd\u8001\u8001\u5b9e\u5b9e\u8f6c [&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-1944","post","type-post","status-publish","format-standard","hentry","category-text"],"_links":{"self":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/1944","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=1944"}],"version-history":[{"count":2,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/1944\/revisions"}],"predecessor-version":[{"id":1952,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/1944\/revisions\/1952"}],"wp:attachment":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=1944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=1944"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=1944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}