{"id":521,"date":"2005-10-29T22:45:27","date_gmt":"2005-10-29T22:45:27","guid":{"rendered":"http:\/\/www.icocean.com\/blog\/?p=521"},"modified":"1970-01-01T07:00:00","modified_gmt":"1970-01-01T07:00:00","slug":"%E5%AD%90%E7%BD%91%E6%8E%A9%E7%A0%81%E6%95%99%E5%AD%A6","status":"publish","type":"post","link":"https:\/\/www.icocean.com\/blog\/?p=521","title":{"rendered":"\u5b50\u7f51\u63a9\u7801\u6559\u5b66"},"content":{"rendered":"<p align=\"center\"><font color=\"#ff0000\" size=\"5\">\u5b50\u7f51\u63a9\u7801\u6559\u5b66<\/font><\/p>\n<p>2005-10-22\u00a0 from: \u7ad9\u957f\u8d44\u8baf\u7f51<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0 \u5b50\u7f51\u63a9\u7801\u7684\u4e3b\u8981\u529f\u80fd\u662f\u544a\u77e5\u7f51\u7edc\u8bbe\u5907\uff0c\u4e00\u4e2a\u7279\u5b9a\u7684IP\u5730\u5740\u7684\u54ea\u4e00\u90e8\u5206\u662f\u5305\u542b\u7f51\u7edc\u5730\u5740\u4e0e\u5b50\u7f51\u5730\u5740\uff0c\u54ea\u4e00\u90e8\u5206\u662f\u4e3b\u673a\u5730\u5740\u3002\u7f51\u7edc\u7684\u8def\u7531\u8bbe\u5907\u53ea\u8981\u8bc6\u522b\u51fa\u76ee\u7684\u5730\u5740\u7684\u7f51\u7edc\u53f7\u4e0e\u5b50\u7f51\u53f7\u5373\u53ef\u4f5c\u51fa\u8def\u7531\u5bfb\u5740\u51b3\u7b56\uff0cIP\u5730\u5740\u7684\u4e3b\u673a\u90e8\u5206\u4e0d\u53c2\u4e0e\u8def\u7531\u5668\u7684\u8def\u7531\u5bfb\u5740\u64cd\u4f5c\uff0c\u53ea\u7528\u4e8e\u5728\u7f51\u6bb5\u4e2d\u552f\u4e00\u6807\u8bc6\u4e00\u4e2a\u7f51\u7edc\u8bbe\u5907\u7684\u63a5\u53e3\u3002\u672c\u6765\uff0c\u5982\u679c\u7f51\u7edc\u7cfb\u7edf\u4e2d\u53ea\u4f7f\u7528A\u3001B\u3001C\u8fd9\u4e09\u79cd\u4e3b\u7c7b\u5730\u5740\uff0c\u800c\u4e0d\u5bf9\u8fd9\u4e09\u79cd\u4e3b\u7c7b\u5730\u5740\u4f5c\u5b50\u7f51\u5212\u5206\u6216\u8005\u8fdb\u884c\u4e3b\u7c7b\u5730\u5740\u7684\u6c47\u603b\uff0c\u5219\u7f51\u7edc\u8bbe\u5907\u6839\u636eIP\u5730\u5740\u7684\u7b2c\u4e00\u4e2a\u5b57\u8282\u7684\u6570\u503c\u8303\u56f4\u5373\u53ef\u5224\u65ad\u5b83\u5c5e\u4e8eA\u3001B\u3001C\u4e2d\u7684\u54ea\u4e00\u4e2a\u4e3b\u7c7b\u7f51\uff0c\u8fdb\u800c\u53ef\u786e\u5b9a\u8be5IP\u5730\u5740\u7684\u7f51\u7edc\u90e8\u5206\u548c\u4e3b\u673a\u90e8\u5206\uff0c\u4e0d\u9700\u8981\u5b50\u7f51\u63a9\u7801\u7684\u8f85\u52a9\u3002 <\/p>\n<p>\u3000\u3000\u4f46\u4e3a\u4e86\u4f7f\u7cfb\u7edf\u5728\u5bf9A\u3001B\u3001C\u8fd9\u4e09\u79cd\u4e3b\u7c7b\u7f51\u8fdb\u884c\u4e86\u5b50\u7f51\u7684\u5212\u5206\uff0c\u6216\u8005\u91c7\u7528\u65e0\u7c7b\u522b\u7684\u57df\u95f4\u9009\u8def\u6280\u672f\uff08Classless Inter-Domain Routing\uff0cCIDR\uff09\u5bf9\u7f51\u6bb5\u8fdb\u884c\u6c47\u603b\u7684\u60c5\u51b5\u4e0b\uff0c\u4e5f\u80fd\u5bf9IP\u5730\u5740\u7684\u7f51\u7edc\u53ca\u5b50\u7f51\u90e8\u5206\u4e0e\u4e3b\u673a\u90e8\u5206\u4f5c\u6b63\u786e\u7684\u533a\u5206\uff0c\u5c31\u5fc5\u987b\u4f9d\u8d56\u4e8e\u5b50\u7f51\u63a9\u7801\u7684\u5e2e\u52a9\u3002 <\/p>\n<p>\u3000\u3000\u5b50\u7f51\u63a9\u7801\u4f7f\u7528\u4e0eIP\u76f8\u540c\u7684\u7f16\u5740\u683c\u5f0f\uff0c\u5b50\u7f51\u63a9\u7801\u4e3a1\u7684\u90e8\u5206\u5bf9\u5e94\u4e8eIP\u5730\u5740\u7684\u7f51\u7edc\u4e0e\u5b50\u7f51\u90e8\u5206\uff0c\u5b50\u7f51\u63a9\u7801\u4e3a0\u7684\u90e8\u5206\u5bf9\u5e94\u4e8eIP\u5730\u5740\u7684\u4e3b\u673a\u90e8\u5206\u3002\u5c06\u5b50\u7f51\u63a9\u7801\u548cIP\u5730\u5740\u4f5c&quot;\u4e0e&quot;\u64cd\u4f5c\u540e\uff0cIP\u5730\u5740\u7684\u4e3b\u673a\u90e8\u5206\u5c06\u88ab\u4e22\u5f03\uff0c\u5269\u4f59\u7684\u7f51\u7edc\u5730\u5740\u548c\u5b50\u7f51\u5730\u5740\u3002\u4f8b\u5982\uff0c\u4e00\u4e2aIP\u5206\u7ec4\u7684\u76ee\u7684IP\u5730\u5740\u4e3a\uff1a10.2.2.1\uff0c\u82e5\u5b50\u7f51\u63a9\u7801\u4e3a\uff1a255.255.255.0\uff0c\u4e0e\u4e4b\u4f5c&quot;\u4e0e&quot;\u8fd0\u7b97\u5f97\uff1a10.2.2.0\uff0c\u5219\u7f51\u7edc\u8bbe\u5907\u8ba4\u4e3a\u8be5IP\u5730\u5740\u7684\u7f51\u7edc\u53f7\u4e0e\u5b50\u7f51\u53f7\u4e3a\uff1a10.2.2.0\u3002\u5b50\u7f51\u63a9\u7801\u662f\u7528\u6765\u5224\u65ad\u4efb\u610f\u4e24\u53f0\u8ba1\u7b97\u673a\u7684IP\u5730\u5740\u662f\u5426\u5c5e\u4e8e\u540c\u4e00\u5b50\u7f51\u7edc\u7684\u6839\u636e\u3002 <br \/>\u6700\u4e3a\u7b80\u5355\u7684\u7406\u89e3\u5c31\u662f\u4e24\u53f0\u8ba1\u7b97\u673a\u5404\u81ea\u7684IP\u5730\u5740\u4e0e\u5b50\u7f51\u63a9\u7801\u8fdb\u884cAND\u8fd0\u7b97\u540e\uff0c\u5982\u679c\u5f97\u51fa\u7684\u7ed3\u679c\u662f\u76f8\u540c\u7684\uff0c\u5219\u8bf4\u660e\u8fd9\u4e24\u53f0\u8ba1\u7b97\u673a\u662f\u5904\u4e8e\u540c\u4e00\u4e2a\u5b50\u7f51\u7edc\u4e0a\u7684\uff0c\u53ef\u4ee5\u8fdb\u884c\u76f4\u63a5\u7684\u901a\u8baf\u3002\u5c31\u8fd9\u4e48\u7b80\u5355\u3002 <br \/>\u8bf7\u770b\u4ee5\u4e0b\u793a\u4f8b\uff1a <\/p>\n<p>\u8fd0\u7b97\u6f14\u793a\u4e4b\u4e00\uff1aaa <br \/>I P \u5730\u5740\u3000 192.168.0.1 <br \/>\u5b50\u7f51\u63a9\u7801\u3000 255.255.255.0 <br \/>AND\u8fd0\u7b97 <br \/>\u8f6c\u5316\u4e3a\u4e8c\u8fdb\u5236\u8fdb\u884c\u8fd0\u7b97\uff1a <br \/>I P \u5730\u5740\u300011010000.10101000.00000000.00000001 <br \/>\u5b50\u7f51\u63a9\u7801\u300011111111.11111111.11111111.00000000 <br \/>AND\u8fd0\u7b97 <br \/>\u3000\u3000\u3000\u3000\u300011000000.10101000.00000000.00000000 <br \/>\u8f6c\u5316\u4e3a\u5341\u8fdb\u5236\u540e\u4e3a\uff1a <br \/>\u3000\u3000\u3000\u3000\u3000\u3000192.168.0.0 <br \/>\u8fd0\u7b97\u6f14\u793a\u4e4b\u4e8c\uff1a <br \/>I P \u5730\u5740\u3000 192.168.0.254 <br \/>\u5b50\u7f51\u63a9\u7801\u3000 255.255.255.0 <br \/>AND\u8fd0\u7b97 <br \/>\u8f6c\u5316\u4e3a\u4e8c\u8fdb\u5236\u8fdb\u884c\u8fd0\u7b97\uff1a <br \/>I P \u5730\u5740\u300011010000.10101000.00000000.11111110 <br \/>\u5b50\u7f51\u63a9\u7801\u300011111111.11111111.11111111.00000000 <br \/>AND\u8fd0\u7b97 <br \/>\u3000\u3000\u3000\u3000\u300011000000.10101000.00000000.00000000 <br \/>\u8f6c\u5316\u4e3a\u5341\u8fdb\u5236\u540e\u4e3a\uff1a <br \/>\u3000\u3000\u3000\u3000\u3000\u3000192.168.0.0 <br \/>\u8fd0\u7b97\u6f14\u793a\u4e4b\u4e09\uff1a <br \/>I P \u5730\u5740\u3000 192.168.0.4 <br \/>\u5b50\u7f51\u63a9\u7801\u3000 255.255.255.0 <br \/>AND\u8fd0\u7b97 <br \/>\u8f6c\u5316\u4e3a\u4e8c\u8fdb\u5236\u8fdb\u884c\u8fd0\u7b97\uff1a <br \/>I P \u5730\u5740\u300011010000.10101000.00000000.00000100 <br \/>\u5b50\u7f51\u63a9\u7801\u300011111111.11111111.11111111.00000000 <br \/>AND\u8fd0\u7b97 <br \/>\u3000\u3000\u3000\u3000\u300011000000.10101000.00000000.00000000 <br \/>\u8f6c\u5316\u4e3a\u5341\u8fdb\u5236\u540e\u4e3a\uff1a <br \/>\u3000\u3000\u3000\u3000\u3000\u3000192.168.0.0 <br \/>\u3000\u3000\u901a\u8fc7\u4ee5\u4e0a\u5bf9\u4e09\u7ec4\u8ba1\u7b97\u673aIP\u5730\u5740\u4e0e\u5b50\u7f51\u63a9\u7801\u7684AND\u8fd0\u7b97\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5b83\u8fd0\u7b97\u7ed3\u679c\u662f\u4e00\u6837\u7684\u3002\u5747\u4e3a192.168.0.0 <br \/>\u3000\u3000\u6240\u4ee5\u8ba1\u7b97\u673a\u5c31\u4f1a\u628a\u8fd9\u4e09\u53f0\u8ba1\u7b97\u673a\u89c6\u4e3a\u662f\u540c\u4e00\u5b50\u7f51\u7edc\uff0c\u7136\u540e\u8fdb\u884c\u901a\u8baf\u7684\u3002\u6211\u73b0\u5728\u5355\u4f4d\u4f7f\u7528\u7684\u4ee3\u7406\u670d\u52a1\u5668\uff0c\u5185\u90e8\u7f51\u7edc\u5c31\u662f\u8fd9\u6837\u89c4\u5212\u7684\u3002 <\/p>\n<p>\u00a0\u00a0\u00a0\u00a0 \u4e5f\u8bb8\u4f60\u53c8\u8981\u95ee\uff0c\u8fd9\u6837\u7684\u5b50\u7f51\u63a9\u7801\u7a76\u7adf\u6709\u591a\u5c11\u4e86IP\u5730\u5740\u53ef\u4ee5\u7528\u5462\uff1f\u4f60\u53ef\u4ee5\u8fd9\u6837\u7b97\u3002 <br \/>\u6839\u636e\u4e0a\u9762\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff0c\u5c40\u57df\u7f51\u5185\u90e8\u7684ip\u5730\u5740\u662f\u6211\u4eec\u81ea\u5df1\u89c4\u5b9a\u7684\uff08\u5f53\u7136\u548c\u5176\u4ed6\u7684ip\u5730\u5740\u662f\u4e00\u6837\u7684\uff09\uff0c\u8fd9\u4e2a\u662f\u7531\u5b50\u7f51\u63a9\u7801\u51b3\u5b9a\u7684\u901a\u8fc7\u5bf9255.255.255.0\u7684\u5206\u6790\u3002\u53ef\u5f97\u51fa\uff1a <br \/>\u3000\u3000\u524d\u4e09\u4f4dIP\u7801\u7531\u5206\u914d\u4e0b\u6765\u7684\u6570\u5b57\u5c31\u53ea\u80fd\u56fa\u5b9a\u4e3a192.168.0\u3000\u3000\u6240\u4ee5\u5c31\u53ea\u5269\u4e0b\u4e86\u6700\u540e\u7684\u4e00\u4f4d\u4e86\uff0c\u90a3\u4e48\u663e\u800c\u6613\u89c1\u4e86\uff0cip\u5730\u5740\u53ea\u80fd\u6709\uff082\u76848\u6b21\u65b9-1\uff09\uff0c\u5373256-1=255\u4e00\u822c\u672b\u4f4d\u4e3a0\u6216\u8005\u662f255\u7684\u90fd\u6709\u5176\u7279\u6b8a\u7684\u4f5c\u7528\u3002 <\/p>\n<p>\u00a0\u00a0\u00a0\u00a0 \u4f46\u662f\u8fd9\u6837\u5212\u5206\u4f46\u6d6a\u8d39\u5730\u5740\u4e86\uff0c\u6240\u4ee5\u540e\u6765\u53c8\u5f15\u51fa\u4e00\u79cd\u53ebVLSM(\u53ef\u53d8\u957f\u63a9\u7801)\u7684\u65b0\u7b97\u6cd5\u3002 <br \/>\u5982\u679c\u5171\u670950\u53f0\u673a\u5668 \uff0c\u90a3\u4e00\u5b9a\u662f\u7528C\u7c7b\u5730\u5740\u3002\u4f46\u662f\u5982\u679c\u7528C\u7c7b\u7684\u8bdd\u6bcf\u4e00\u4e2a\u7f51\u6bb5\u53ef\u4ee5\u7528\u5230253\u53f0\u4e3b\u673a\u800c\u4f60\u73b0\u5728\u53ea\u670950\u53f0\uff0c\u8fd9\u6837\u7684\u8bdd\u4e0d\u662f\u8981\u6d6a\u8d39200\u53f0\u4e86\u5417\uff1f\u4f46\u662f\u5982\u679c\u7528\u4e86VLSM\u5c31\u4e0d\u540c\u4e86\u8bf7\u770b\u3002 <br \/>\u5982\u679c\u662f\u9759\u6001\u63a9\u7801\u7684\u8bddC\u7c7b\u5730\u5740\u56e0\u8be5\u662f255.255.255.0 <br \/>50&lt;2\u76847\u6b21\u65b9\uff0c\u5316\u4e3a\u5341\u8fdb\u5236\u5c31\u662f64\u3002\u6240\u4ee5VLSM\u5c31\u662f255.255.255.64 <\/p>\n<p>\u4f8b\u4e00:IP:192.168.0.1 <br \/>SubstMask\uff1a255.255.255.64 <br \/>\u8f6c\u5316\u4e3a\u4e8c\u8fdb\u523611000000.10101000.00000000.00000001 <br \/>11111111.11111111.00000000.1000000 <br \/>AND\u4e0e\u8fd0\u7b97 <br \/>11000000.10101000.00000000.00000000 <br \/>\u8f6c\u5316\u4e3a\u5341\u8fdb\u5236192.168.0.0 <br \/>\u4f8b\u4e8c:192.168.0.50 <br \/>SubstMask\uff1a255.255.255.64 <br \/>\u8f6c\u5316\u4e3a\u4e8c\u8fdb\u523611000000.10101000.00000000.00110010 <br \/>11111111.11111111.11111111.01000000 <br \/>AND\u4e0e\u8fd0\u7b97 <br \/>11000000.10101000.00000000.00000000 <\/p>\n<p>\u8f6c\u5316\u4e3a\u5341\u8fdb\u5236192.168.0.0 <br \/>\u4ee5\u4e0a\u4e8c\u4e2a\u5730\u5740\u5728\u540c\u4e00\u7f51\u6bb5 <br \/>\u518d\u770b: <br \/>\u4f8b\u4e09\uff1aIP:192.168.0.65 <br \/>SubstMask:255.255.255.64 <br \/>\u8f6c\u5316\u4e3a\u4e8c\u8fdb\u523611000000.10101000.00000000.01000001 <br \/>11000000.10101000.00000000.01000000 <br \/>AND\u4e0e\u8fd0\u7b97 <br \/>110000000.10101000.00000000.010000000 <br \/>\u8f6c\u5316\u4e3a\u5341\u8fdb\u5236192.168.0.64 <br \/>\u5212\u5f00\u4e86!!\u5c31\u8fd9\u4e48\u7b80\u5355! <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b50\u7f51\u63a9\u7801\u6559\u5b66 2005-10-22\u00a0 from: \u7ad9\u957f\u8d44\u8baf\u7f51 \u00a0\u00a0\u00a0\u00a0 \u5b50\u7f51\u63a9\u7801\u7684\u4e3b\u8981\u529f\u80fd\u662f\u544a\u77e5\u7f51\u7edc\u8bbe\u5907\uff0c\u4e00\u4e2a <a href='https:\/\/www.icocean.com\/blog\/?p=521' class='excerpt-more'>[&#8230;]<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-521","post","type-post","status-publish","format-standard","hentry","category-4","category-4-id","post-seq-1","post-parity-odd","meta-position-corners","fix"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/521","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=521"}],"version-history":[{"count":0,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/521\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=521"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=521"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.icocean.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=521"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}