{"id":8737,"date":"2023-03-06T09:53:41","date_gmt":"2023-03-06T01:53:41","guid":{"rendered":"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737"},"modified":"2024-12-10T17:26:13","modified_gmt":"2024-12-10T09:26:13","slug":"kurose-2018-%e8%ae%a1%e7%ae%97%e6%9c%ba%e7%bd%91%e7%bb%9c%ef%bc%9a%e8%87%aa%e9%a1%b6%e5%90%91%e4%b8%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737","title":{"rendered":"Kurose-2018-\u8ba1\u7b97\u673a\u7f51\u7edc\uff1a\u81ea\u9876\u5411\u4e0b\u65b9\u6cd5"},"content":{"rendered":"<p>\u8bfb\u8005\u7b14\u8bb0\uff1a<br \/>\n<a href=\"https:\/\/www.jianshu.com\/p\/2fc36d046f44\">https:\/\/www.jianshu.com\/p\/2fc36d046f44<\/a><\/p>\n<p>\u672c\u4e66\u91cd\u8981\u8bf4\u660e\uff1a<\/p>\n<pre><code 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ez-toc-heading-19\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#0000%E4%B8%8E255255255255\" title=\"0.0.0.0\u4e0e255.255.255.255\">0.0.0.0\u4e0e255.255.255.255<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-5\"><a class=\"ez-toc-link ez-toc-heading-20\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#NAT%E4%BD%BF%E8%83%BD%E8%B7%AF%E7%94%B1%E5%99%A8\" title=\"NAT\u4f7f\u80fd\u8def\u7531\u5668\">NAT\u4f7f\u80fd\u8def\u7531\u5668<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-21\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#3%E6%8E%A7%E5%88%B6%E5%B9%B3%E9%9D%A2\" title=\"3.\u63a7\u5236\u5e73\u9762\">3.\u63a7\u5236\u5e73\u9762<\/a><ul class=\"ez-toc-list-level-5\"><li class=\"ez-toc-heading-level-5\"><a class=\"ez-toc-link ez-toc-heading-22\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#%E8%B7%AF%E7%94%B1%E9%80%89%E6%8B%A9%E7%AE%97%E6%B3%95\" title=\"\u8def\u7531\u9009\u62e9\u7b97\u6cd5\">\u8def\u7531\u9009\u62e9\u7b97\u6cd5<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-5\"><a class=\"ez-toc-link ez-toc-heading-23\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#%E5%86%85%E9%83%A8%E8%B7%AF%E7%94%B1-%E8%87%AA%E6%B2%BB%E7%B3%BB%E7%BB%9F%EF%BC%88Autonomous_System_AS%EF%BC%89\" title=\"\u5185\u90e8\u8def\u7531-\u81ea\u6cbb\u7cfb\u7edf\uff08Autonomous System, AS\uff09\">\u5185\u90e8\u8def\u7531-\u81ea\u6cbb\u7cfb\u7edf\uff08Autonomous System, AS\uff09<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-5\"><a class=\"ez-toc-link ez-toc-heading-24\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#ISP%E4%B9%8B%E9%97%B4%E8%B7%AF%E7%94%B1-%E8%87%AA%E6%B2%BB%E7%B3%BB%E7%BB%9F%E9%97%B4%E8%B7%AF%E7%94%B1%E9%80%89%E6%8B%A9%E5%8D%8F%E8%AE%AE%EF%BC%88inter-_autonomous_system_routing_protocol%EF%BC%89\" title=\"ISP\u4e4b\u95f4\u8def\u7531-\u81ea\u6cbb\u7cfb\u7edf\u95f4\u8def\u7531\u9009\u62e9\u534f\u8bae\uff08inter- autonomous system routing protocol\uff09\">ISP\u4e4b\u95f4\u8def\u7531-\u81ea\u6cbb\u7cfb\u7edf\u95f4\u8def\u7531\u9009\u62e9\u534f\u8bae\uff08inter- autonomous system routing protocol\uff09<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-25\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#4SDN%E6%8E%A7%E5%88%B6%E5%B9%B3%E9%9D%A2\" title=\"4.SDN\u63a7\u5236\u5e73\u9762\">4.SDN\u63a7\u5236\u5e73\u9762<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-26\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#%E4%BA%94%E3%80%81%E9%93%BE%E8%B7%AF%E5%B1%82%E5%92%8C%E5%B1%80%E5%9F%9F%E7%BD%91\" title=\"\u4e94\u3001\u94fe\u8def\u5c42\u548c\u5c40\u57df\u7f51\">\u4e94\u3001\u94fe\u8def\u5c42\u548c\u5c40\u57df\u7f51<\/a><ul 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href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#4%EF%BC%89%E8%99%9A%E6%8B%9F%E5%B1%80%E5%9F%9F%E7%BD%91\" title=\"4\uff09\u865a\u62df\u5c40\u57df\u7f51\">4\uff09\u865a\u62df\u5c40\u57df\u7f51<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-34\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#3%E9%93%BE%E8%B7%AF%E8%99%9A%E6%8B%9F%E5%8C%96%EF%BC%9A%E7%BD%91%E7%BB%9C%E4%BD%9C%E4%B8%BA%E9%93%BE%E8%B7%AF%E5%B1%82\" title=\"3.\u94fe\u8def\u865a\u62df\u5316\uff1a\u7f51\u7edc\u4f5c\u4e3a\u94fe\u8def\u5c42\">3.\u94fe\u8def\u865a\u62df\u5316\uff1a\u7f51\u7edc\u4f5c\u4e3a\u94fe\u8def\u5c42<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-35\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#4%E6%95%B0%E6%8D%AE%E4%B8%AD%E5%BF%83%E7%BD%91%E7%BB%9C\" title=\"4.\u6570\u636e\u4e2d\u5fc3\u7f51\u7edc\">4.\u6570\u636e\u4e2d\u5fc3\u7f51\u7edc<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-36\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#5web%E9%A1%B5%E9%9D%A2%E8%AF%B7%E6%B1%82%E7%9A%84%E5%8E%86%E7%A8%8B\" title=\"5.web\u9875\u9762\u8bf7\u6c42\u7684\u5386\u7a0b\">5.web\u9875\u9762\u8bf7\u6c42\u7684\u5386\u7a0b<\/a><\/li><\/ul><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-3\"><a class=\"ez-toc-link ez-toc-heading-37\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#%E5%85%AD%E3%80%81%E7%A7%BB%E5%8A%A8%E7%BD%91%E7%BB%9C%E5%92%8C%E6%97%A0%E7%BA%BF%E7%BD%91%E7%BB%9C\" title=\"\u516d\u3001\u79fb\u52a8\u7f51\u7edc\u548c\u65e0\u7ebf\u7f51\u7edc\">\u516d\u3001\u79fb\u52a8\u7f51\u7edc\u548c\u65e0\u7ebf\u7f51\u7edc<\/a><ul class=\"ez-toc-list-level-4\"><li class=\"ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-38\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#1%E6%A6%82%E8%BF%B0\" title=\"1.\u6982\u8ff0\">1.\u6982\u8ff0<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-39\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#2%E6%97%A0%E7%BA%BF%E9%93%BE%E8%B7%AF%E5%92%8C%E7%BD%91%E7%BB%9C%E7%89%B9%E5%BE%81\" title=\"2.\u65e0\u7ebf\u94fe\u8def\u548c\u7f51\u7edc\u7279\u5f81\">2.\u65e0\u7ebf\u94fe\u8def\u548c\u7f51\u7edc\u7279\u5f81<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-40\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#3WiFi\" title=\"3.WiFi\">3.WiFi<\/a><\/li><li class=\"ez-toc-page-1 ez-toc-heading-level-4\"><a class=\"ez-toc-link ez-toc-heading-41\" href=\"http:\/\/xinyiworld.top\/wordpress_it\/?p=8737\/#4%E8%9C%82%E7%AA%9D%E5%9B%A0%E7%89%B9%E7%BD%91%E6%8E%A5%E5%85%A5\" title=\"4.\u8702\u7a9d\u56e0\u7279\u7f51\u63a5\u5165\">4.\u8702\u7a9d\u56e0\u7279\u7f51\u63a5\u5165<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"%E4%B8%80%E3%80%81%E7%BD%91%E7%BB%9C%E5%9F%BA%E6%9C%AC%E5%8E%9F%E7%90%86\"><\/span>\u4e00\u3001\u7f51\u7edc\u57fa\u672c\u539f\u7406<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"1%E5%88%86%E7%BB%84\"><\/span>1.\u5206\u7ec4<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\u4e3b\u673a\/\u7aef\u7cfb\u7edf<br \/>\n\u7aef\u7cfb\u7edf\u901a\u8fc7\u901a\u4fe1\u94fe\u8def\uff08communication link\uff09\u548c\u5206\u7ec4\u4ea4\u6362\u673a\uff08packet switch\uff09\u8fde\u63a5\u5230\u4e00 \u8d77<\/li>\n<\/ul>\n<p>\u4e3b\u673a\u6709\u65f6\u53c8\u88ab\u8fdb\u4e00\u6b65\u5212\u5206\u4e3a\u4e24\u7c7b\uff1a\u5ba2\u6237\uff08client\uff09\u548c\u670d\u52a1\u5668\uff08server\uff09<\/p>\n<ul>\n<li>\u5206\u7ec4<br \/>\n\u5f53\u4e00\u53f0\u7aef\u7cfb\u7edf\u8981\u5411\u53e6\u4e00\u53f0\u7aef\u7cfb\u7edf\u53d1\u9001\u6570\u636e\u65f6\uff0c\u53d1\u9001\u7aef\u7cfb\u7edf\u5c06\u6570\u636e\u5206\u6bb5\uff0c\u5e76\u4e3a\u6bcf\u6bb5\u52a0\u4e0a\u9996\u90e8\u5b57\u8282\u3002\u7531\u6b64\u5f62\u6210\u7684\u4fe1\u606f\u5305\u7528\u8ba1\u7b97\u673a\u7f51\u7edc\u7684\u672f\u8bed\u6765\u8bf4\u79f0\u4e3a\u5206\u7ec4\uff08packet\uff09<\/li>\n<\/ul>\n<p><strong>\u96be\u70b9<\/strong>\uff1a\u5206\u7ec4\u4ea4\u6362\u7f51\u7684\u65f6\u5ef6\u539f\u7406<\/p>\n<ul>\n<li>\n<p>\u5206\u7ec4\u4ea4\u6362\u673a\u4e0e\u8def\u7531\u5668<br \/>\n\u5206\u7ec4\u4ea4\u6362\u673a\u4ece\u5b83\u7684\u4e00\u6761\u5165\u901a\u4fe1\u94fe\u8def\u63a5\u6536\u5230\u8fbe\u7684\u5206\u7ec4\uff0c\u5e76\u4ece\u5b83\u7684\u4e00\u6761\u51fa\u901a\u4fe1\u94fe\u8def\u8f6c\u53d1\u8be5\u5206\u7ec4\u3002\u5e02\u9762\u4e0a\u6d41\u884c\u7740\u5404\u79cd\u7c7b\u578b\u3001\u5404\u5177\u7279\u8272\u7684\u5206\u7ec4\u4ea4\u6362\u673a\uff0c\u4f46\u5728\u5f53\u4eca\u7684\u56e0\u7279\u7f51\u4e2d\uff0c\u4e24\u79cd\u6700\u8457\u540d\u7684\u7c7b\u578b\u662f<strong>\u8def\u7531\u5668<\/strong>\uff08router\uff09\u548c<strong>\u94fe\u8def\u5c42\u4ea4\u6362\u673a<\/strong>\uff08link-layer switch\uff09o\u8fd9\u4e24\u79cd\u7c7b\u578b\u7684\u4ea4\u6362\u673a\u671d \u7740\u6700\u7ec8\u76ee\u7684\u5730\u8f6c\u53d1\u5206\u7ec4\u3002\u94fe\u8def\u5c42\u4ea4\u6362\u673a\u901a\u5e38\u7528\u4e8e\u63a5\u5165\u7f51\u4e2d\uff0c\u800c\u8def\u7531\u5668\u901a\u5e38\u7528\u4e8e\u7f51\u7edc\u6838\u5fc3\u4e2d\u3002<\/p>\n<\/li>\n<li>\n<p>ISP<br \/>\n\u7aef\u7cfb\u7edf\u901a\u8fc7<strong>\u56e0\u7279\u7f51\u670d\u52a1\u63d0\u4f9b\u5546<\/strong>\uff08Internet Service Provider, ISP\uff09\u63a5\u5165\u56e0\u7279\u7f51<br \/>\n\u6bcf\u4e2aISP\u81ea\u8eab\u5c31\u662f\u4e00\u4e2a\u7531\u591a\u53f0\u5206\u7ec4\u4ea4\u6362\u673a\u548c\u591a\u6bb5\u901a\u4fe1\u94fe\u8def\u7ec4\u6210\u7684\u7f51\u7edc\u3002<\/p>\n<\/li>\n<\/ul>\n<p><strong>\u96be\u70b9<\/strong>\uff1aISP\u7684\u7ec4\u7ec7\u67b6\u6784<\/p>\n<ul>\n<li>\u5957\u63a5\u5b57\u63a5\u53e3\uff08socket interface\uff09<br \/>\n\u8be5\u63a5\u53e3\u89c4\u5b9a\u4e86\u8fd0\u884c \u5728\u4e00\u4e2a\u7aef\u7cfb\u7edf\u4e0a\u7684\u7a0b\u5e8f\u8bf7\u6c42\u56e0\u7279\u7f51\u57fa\u7840\u8bbe\u65bd\u5411\u8fd0\u884c\u5728\u53e6\u4e00\u4e2a\u7aef\u7cfb\u7edf\u4e0a\u7684\u7279\u5b9a\u76ee\u7684\u5730\u7a0b\u5e8f\u4ea4 \u4ed8\u6570\u636e\u7684\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"2%E5%8D%8F%E8%AE%AE\"><\/span>2.\u534f\u8bae<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h5><span class=\"ez-toc-section\" id=\"1%E5%8D%8F%E8%AE%AE%E5%88%86%E5%B1%82\"><\/span>1)\u534f\u8bae\u5206\u5c42<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>\u5404\u5c42\u7684\u6240\u6709\u534f\u8bae\u88ab\u79f0\u4e3a<strong>\u534f\u8bae\u6808\uff08protocol stack\uff09<\/strong>\uff0c\u56e0\u7279\u7f51\u7684\u534f\u8bae\u6808\u75315\u4e2a\u5c42\u6b21\u7ec4\u6210\uff1a<strong>\u7269\u7406\u5c42\u3001\u94fe\u8def\u5c42\u3001\u7f51\u7edc\u5c42\u3001\u8fd0\u8f93\u5c42\u548c\u5e94\u7528\u5c42<\/strong>\u3002<br \/>\n<img src=\"http:\/\/xinyiworld.top\/wordpress_it\/wp-content\/uploads\/2023\/03\/\u641c\u72d7\u622a\u56fe20230307092704.png\" alt=\"\" \/><\/p>\n<blockquote>\n<p>\uff081\uff09\u5e94\u7528\u5c42<\/p>\n<\/blockquote>\n<p>http\u534f\u8bae\u7b49<\/p>\n<p>\u5e94\u7528\u5c42\u534f\u8bae\u5206\u5e03\u5728\u591a\u4e2a\u7aef\u7cfb\u7edf\u4e0a\uff0c\u800c\u4e00\u4e2a\u7aef\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u534f\u8bae\u4e0e\u53e6\u4e00\u4e2a\u7aef\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u4ea4\u6362\u4fe1\u606f\u5206\u7ec4\u3002\u6211\u4eec\u628a\u8fd9\u79cd\u4f4d\u4e8e\u5e94\u7528\u5c42\u7684\u4fe1\u606f\u5206\u7ec4\u79f0\u4e3a<strong>\u62a5\u6587\uff08message\uff09<\/strong>\u3002<\/p>\n<blockquote>\n<p>\uff082\uff09\u8fd0\u8f93\u5c42<\/p>\n<\/blockquote>\n<p>tcp\/udp\u534f\u8bae\u7b49<\/p>\n<p>\u8fd0\u8f93\u5c42\u5728<strong>\u5e94\u7528\u7a0b\u5e8f\u7aef\u70b9<\/strong>\u4e4b\u95f4\u4f20\u9001<strong>\u5e94\u7528\u5c42\u62a5\u6587<\/strong>\uff0c\u628a\u8fd0\u8f93\u5c42\u7684\u5206\u7ec4\u79f0\u4e3a<strong>\u62a5\u6587\u6bb5(segment)<\/strong>\u3002<\/p>\n<p>\u8fd0\u8f93\u5c42\u534f\u8bae\u662f\u5728<strong>\u7aef\u7cfb\u7edf<\/strong>\u4e2d\u800c\u4e0d\u662f\u5728\u8def\u7531\u5668\u4e2d\u5b9e\u73b0\u7684<\/p>\n<p><strong>\u8fd0\u8f93\u5c42\u4e0e\u7f51\u7edc\u5c42\u7684\u5173\u7cfb<\/strong>\uff1a\u7f51\u7edc\u5c42\u63d0\u4f9b\u4e86<strong>\u4e3b\u673a<\/strong>\u4e4b\u95f4\u7684\u903b\u8f91\u901a\u4fe1\uff0c\u800c\u8fd0\u8f93\u5c42\u4e3a\u8fd0\u884c\u5728\u4e0d\u540c\u4e3b\u673a\u4e0a\u7684<strong>\u8fdb\u7a0b<\/strong>\u4e4b\u95f4\u63d0\u4f9b\u4e86\u903b\u8f91\u901a\u4fe1\u3002<\/p>\n<blockquote>\n<p>\uff083\uff09\u7f51\u7edc\u5c42\uff08\u6700\u590d\u6742\u7684\u5c42\u6b21\uff09<\/p>\n<\/blockquote>\n<p>\u7f51\u9645\u534f\u8baeIP\u3001\u8def\u7531\u9009\u62e9\u534f\u8bae\u7b49<\/p>\n<p>\u56e0\u7279\u7f51\u7684\u7f51\u7edc\u5c42\u8d1f\u8d23\u5c06\u79f0\u4e3a<strong>\u6570\u636e\u62a5\uff08datagram\uff09<\/strong>\u7684\u7f51\u7edc\u5c42\u5206\u7ec4\u4ece\u4e00\u53f0<strong>\u4e3b\u673a<\/strong>\u79fb\u52a8\u5230\u53e6\u4e00\u53f0<strong>\u4e3b\u673a<\/strong>\u3002<\/p>\n<blockquote>\n<p>\uff084\uff09\u94fe\u8def\u5c42<\/p>\n<\/blockquote>\n<p>\u4ee5\u592a\u7f51\u3001WiFi\u548c\u7535\u7f06\u63a5\u5165\u7f51\u7684DOCSIS\u534f\u8bae\u7b49<\/p>\n<p>\u56e0\u7279\u7f51\u7684\u7f51\u7edc\u5c42\u901a\u8fc7\u6e90\u548c\u76ee\u7684\u5730\u4e4b\u95f4\u7684\u4e00\u7cfb\u5217\u8def\u7531\u5668\u8def\u7531\u6570\u636e\u62a5\uff0c\u6211\u4eec\u628a\u94fe\u8def\u5c42\u5206\u7ec4\u79f0\u4e3a<strong>\u5e27\uff08frame\uff09<\/strong><\/p>\n<p>Mac\u5730\u5740\u5c5e\u4e8e\u6570\u636e\u94fe\u8def\u5c42\uff1a<br \/>\n<a href=\"https:\/\/blog.csdn.net\/u013434525\/article\/details\/135885653\">https:\/\/blog.csdn.net\/u013434525\/article\/details\/135885653<\/a><br \/>\n<img src=\"http:\/\/xinyiworld.top\/wordpress_it\/wp-content\/uploads\/2023\/03\/link.jpg\" alt=\"\" \/><\/p>\n<blockquote>\n<p>\uff085\uff09\u7269\u7406\u5c42<\/p>\n<\/blockquote>\n<p>\u867d\u7136\u94fe\u8def\u5c42\u7684\u4efb\u52a1\u662f\u5c06\u6574\u4e2a\u5e27\u4ece\u4e00\u4e2a\u7f51\u7edc\u5143\u7d20\u79fb\u52a8\u5230\u90bb\u8fd1\u7684\u7f51\u7edc\u5143\u7d20\uff0c\u800c\u7269\u7406\u5c42\u7684\u4efb\u52a1 \u662f\u5c06\u8be5\u5e27\u4e2d\u7684\u4e00\u4e2a\u4e2a\u6bd4\u7279\u4ece\u4e00\u4e2a\u8282\u70b9\u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9\u3002\u5728\u8fd9\u5c42\u4e2d\u7684\u534f\u8bae\u4ecd\u7136\u662f\u94fe\u8def\u76f8\u5173\u7684\uff0c\u5e76\u4e14\u8fdb\u4e00\u6b65\u4e0e\u8be5\u94fe\u8def\uff08\u4f8b\u5982\uff0c\u53cc\u7ede\u94dc\u7ebf\u3001\u5355\u6a21\u5149\u7ea4\uff09\u7684\u5b9e\u9645\u4f20\u8f93\u5a92\u4f53\u76f8\u5173\u3002\u4f8b\u5982\uff0c\u4ee5\u592a\u7f51\u5177\u6709\u8bb8\u591a\u7269\u7406\u5c42\u534f\u8bae\uff1a\u4e00\u4e2a\u662f\u5173\u4e8e\u53cc\u7ede\u94dc\u7ebf\u7684\uff0c\u53e6\u4e00\u4e2a\u662f\u5173\u4e8e\u540c\u8f74\u7535\u7f06\u7684\uff0c\u8fd8\u6709\u4e00\u4e2a\u662f\u5173 \u4e8e\u5149\u7ea4\u7684\uff0c\u7b49\u7b49\u3002\u5728\u6bcf\u79cd\u573a\u5408\u4e2d\uff0c\u8de8\u8d8a\u8fd9\u4e9b\u94fe\u8def\u79fb\u52a8\u4e00\u4e2a\u6bd4\u7279\u662f\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u8fdb\u884c\u7684\u3002<\/p>\n<h5><span class=\"ez-toc-section\" id=\"2%E5%B0%81%E8%A3%85\"><\/span>2)\u5c01\u88c5<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>\u5728\u6bcf\u4e00\u5c42\uff0c\u4e00\u4e2a\u5206\u7ec4\u5177\u6709\u4e24\u79cd\u7c7b\u578b\u7684\u5b57\u6bb5:\u9996\u90e8\u5b57\u6bb5\u548c<strong>\u6709\u6548\u8f7d\u8377\u5b57\u6bb5(payload field)<\/strong>\uff0c\u6709\u6548\u8f7d\u8377\u901a\u5e38\u662f\u6765\u81ea\u4e0a\u4e00\u5c42\u7684\u5206\u7ec4\u3002<\/p>\n<p>\u5c01\u88c5\u7684\u8fc7\u7a0b\u80fd\u591f\u6bd4\u524d\u9762\u63cf\u8ff0\u7684\u66f4\u4e3a\u590d\u6742\u3002\u4f8b\u5982\uff0c\u4e00\u4e2a\u5927\u62a5\u6587\u53ef\u80fd\u88ab\u5212\u5206\u4e3a\u591a\u4e2a\u8fd0\u8f93\u5c42\u7684\u62a5\u6587\u6bb5\uff08\u8fd9\u4e9b\u62a5\u6587\u6bb5\u6bcf\u4e2a\u53ef\u80fd\u88ab\u5212\u5206\u4e3a\u591a\u4e2a\u7f51\u7edc\u5c42\u6570\u636e\u62a5\uff09\u3002\u5728\u63a5\u6536\u7aef\uff0c\u5219\u5fc5\u987b\u4ece\u5176\u8fde\u7eed\u7684\u6570\u636e\u62a5\u4e2d\u91cd\u6784\u8fd9\u6837\u4e00\u4e2a\u62a5\u6587\u6bb5\u3002<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E4%BA%8C%E3%80%81%E5%BA%94%E7%94%A8%E5%B1%82\"><\/span>\u4e8c\u3001\u5e94\u7528\u5c42<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"1%E8%BF%9B%E7%A8%8B%E9%97%B4%E9%80%9A%E8%AE%AF\"><\/span>1.\u8fdb\u7a0b\u95f4\u901a\u8baf<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\u5957\u63a5\u5b57<br \/>\n\u5957\u63a5\u5b57\u662f<strong>\u540c\u4e00\u53f0\u4e3b\u673a<\/strong>\u5185<strong>\u5e94\u7528\u5c42<\/strong>\u4e0e<strong>\u8fd0\u8f93\u5c42<\/strong>\u4e4b\u95f4\u7684\u63a5\u53e3\uff0c\u662f<strong>\u5e94\u7528\u7a0b\u5e8f\u8fdb\u7a0b<\/strong>\u548c<strong>\u8fd0\u8f93\u5c42\u534f\u8bae<\/strong>\u4e4b\u95f4\u7684\u63a5\u53e3\u3002<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E4%B8%89%E3%80%81%E8%BF%90%E8%BE%93%E5%B1%82\"><\/span>\u4e09\u3001\u8fd0\u8f93\u5c42<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"%E5%A4%9A%E8%B7%AF%E5%88%86%E8%A7%A3%E4%B8%8E%E5%A4%9A%E8%B7%AF%E5%A4%8D%E7%94%A8\"><\/span>\u591a\u8def\u5206\u89e3\u4e0e\u591a\u8def\u590d\u7528<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\n<p>\u591a\u8def\u5206\u89e3<br \/>\n\u5c06<strong>\u8fd0\u8f93\u5c42<\/strong>\u62a5\u6587\u6bb5\u4e2d\u7684\u6570\u636e\u4ea4\u4ed8\u5230\u6b63\u786e\u7684<strong>\u5957\u63a5\u5b57<\/strong>\u7684\u5de5\u4f5c\u79f0\u4e3a\u591a\u8def\u5206\u89e3(demultiplexing)<\/p>\n<\/li>\n<li>\n<p>\u591a\u8def\u590d\u7528<br \/>\n\u5728\u6e90\u4e3b\u673a\u4ece<strong>\u4e0d\u540c\u5957\u63a5\u5b57<\/strong>\u4e2d\u6536\u96c6\u6570\u636e\u5757\uff0c\u5e76\u4e3a\u6bcf\u4e2a\u6570\u636e\u5757\u5c01\u88c5\u4e0a\u9996\u90e8\u4fe1\u606f(\u8fd9\u5c06\u5728\u4ee5\u540e\u7528\u4e8e\u5206\u89e3)\u4ece\u800c\u751f\u6210\u62a5\u6587\u6bb5\uff0c\u7136\u540e\u5c06\u62a5\u6587\u6bb5\u4f20\u9012\u5230\u7f51\u7edc\u5c42\uff0c\u6240\u6709\u8fd9\u4e9b\u5de5\u4f5c\u79f0\u4e3a\u591a\u8def\u590d\u7528(multiplexing)\u3002<\/p>\n<\/li>\n<\/ul>\n<blockquote>\n<p>\u5728\u4e3b\u673a\u4e0a\u7684\u6bcf\u4e2a\u5957\u63a5\u5b57\u80fd\u591f\u5206\u914d\u4e00\u4e2a\u7aef\u53e3\u53f7\uff0c\u5f53\u62a5\u6587\u6bb5\u5230\u8fbe\u4e3b\u673a\u65f6\uff0c\u8fd0\u8f93\u5c42\u68c0\u67fb\u62a5\u6587\u6bb5\u4e2d\u7684\u76ee\u7684\u7aef\u53e3\u53f7\uff0c\u5e76\u5c06\u5176\u5b9a\u5411\u5230\u76f8 \u5e94\u7684\u5957\u63a5\u5b57\u3002\u7136\u540e\u62a5\u6587\u6bb5\u4e2d\u7684\u6570\u636e\u901a\u8fc7\u5957\u63a5\u5b57\u8fdb\u5165\u5176\u6240\u8fde\u63a5\u7684\u8fdb\u7a0b\u3002\u5982\u6211\u4eec\u5c06\u770b\u5230\u7684\u90a3\u6837\uff0cUDP\u5927\u4f53\u4e0a\u662f\u8fd9\u6837\u505a\u7684\u3002\u7136\u800c\uff0c\u4e5f\u5c06\u5982\u6211\u4eec\u6240\u89c1\uff0cTCP\u4e2d\u7684\u591a\u8def\u590d\u7528\u4e0e\u591a\u8def\u5206\u89e3\u66f4\u4e3a\u590d\u6742\u3002<\/p>\n<\/blockquote>\n<h4><span class=\"ez-toc-section\" id=\"TCP%E4%B8%8EUDP%E7%9A%84%E5%8C%BA%E5%88%AB\"><\/span>TCP\u4e0eUDP\u7684\u533a\u522b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>1.\u4e00\u4e2aUDP\u5957\u63a5\u5b57\u662f\u7531\u4e00\u4e2a\u4e8c\u5143\u7ec4(\u76ee\u7684IP\u5730\u5740,\u76ee\u7684\u7aef\u53e3\u53f7)\u5168\u9762\u6807\u8bc6\u7684;TCP\u5957\u63a5\u5b57\u662f\u7531\u4e00\u4e2a\u56db\u5143\u7ec4\uff08\u6e90IP\u5730\u5740,\u6e90\u7aef\u53e3\u53f7\uff0c\u76ee\u7684IP\u5730\u5740\uff0c\u76ee\u7684\u7aef\u53e3\u53f7\uff09\u6765\u6807\u8bc6\u7684\u3002<\/p>\n<ul>\n<li>\n<p>\u9762\u5411\u65e0\u8fde\u63a5\u7684\u591a\u8def\u5206\u89e3\u4e0e\u591a\u8def\u590d\u7528<br \/>\n2.\u4e00\u4e2aUDP\u5957\u63a5\u5b57\u662f\u7531\u4e00\u4e2a\u4e8c\u5143\u7ec4\u5168\u9762\u6807\u8bc6\u7684\uff0c\u8be5\u4e8c\u5143\u7ec4\u5305\u542b\u4e00\u4e2a\u76ee\u7684IP\u5730\u5740\u548c\u4e00\u4e2a\u76ee\u7684\u7aef\u53e3\u53f7\u3002\u56e0\u6b64\u5982\u679c\u4e24\u4e2aUDP\u62a5\u6587\u6bb5\u6709\u4e0d\u540c\u7684\u6e90IP\u5730\u5740\u548c\/\u6216\u6e90\u7aef\u53e3\u53f7\uff0c\u4f46\u5177\u6709\u76f8\u540c\u7684\u76ee\u7684IP\u5730\u5740\u548c\u76ee\u7684\u7aef\u53e3\u53f7\uff0c\u90a3\u4e48\u8fd9\u4e24\u4e2a\u62a5\u6587\u6bb5\u5c06\u901a\u8fc7\u76f8\u540c\u7684\u76ee\u7684\u5957\u63a5\u5b57\u88ab\u5b9a\u5411\u5230<strong>\u76f8\u540c\u7684\u76ee\u7684\u8fdb\u7a0b<\/strong>\u3002\uff08\u6240\u4ee5udp\u662f\u65e0\u8fde\u63a5\u7684\uff0c\u56e0\u4e3a\u534f\u8bae\u4e2d\u5c31\u6ca1\u6709\u6e90\u4e3b\u673a\u548c\u7aef\u53e3\u7684\u6807\u8bc6\uff09<\/p>\n<\/li>\n<li>\n<p>\u9762\u5411\u8fde\u63a5\u7684\u591a\u8def\u5206\u89e3\u4e0e\u591a\u8def\u590d\u7528<br \/>\n3.\u4e24\u4e2a\u5177\u6709\u4e0d\u540c\u6e90IP\u5730\u5740\u6216\u6e90\u7aef\u53e3\u53f7\u7684\u5230\u8fbeTCP\u62a5\u6587\u6bb5\u5c06\u88ab\u5b9a\u5411\u5230\u4e24\u4e2a\u4e0d\u540c\u7684\u5957\u63a5\u5b57\uff0c\u9664\u975eTCP\u62a5\u6587\u6bb5\u643a\u5e26\u4e86\u521d\u59cb\u521b\u5efa\u8fde\u63a5\u7684\u8bf7\u6c42\uff1b\u670d\u52a1\u5668\u4e3b\u673a\u53ef\u4ee5\u652f\u6301\u5f88\u591a\u5e76\u884c\u7684TCP\u5957\u63a5\u5b57\uff0c\u6bcf\u4e2a\u5957\u63a5\u5b57\u4e0e\u4e00\u4e2a\u8fdb\u7a0b\u76f8\u8054\u7cfb\uff0c\u5e76\u7531\u5176\u5143\u7ec4\u6765\u6807\u8bc6\u6bcf\u4e2a\u5957\u63a5\u5b57\u3002\u5f53\u4e00\u4e2aTCP\u62a5\u6587\u6bb5\u5230\u8fbe\u4e3b\u673a\u65f6\uff0c\u6240\u67094\u4e2a\u5b57\u6bb5\uff08\u6e90IP\u5730\u5740,\u6e90\u7aef\u53e3\uff0c\u76ee\u7684IP\u5730\u5740\uff0c\u76ee\u7684\u7aef\u53e3\uff09\u88ab\u7528\u6765\u5c06\u62a5\u6587\u6bb5\u5b9a\u5411\uff08\u5206\u89e3\uff09\u5230\u76f8\u5e94\u7684\u5957\u63a5\u5b57\u3002<\/p>\n<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"UDP\"><\/span>UDP<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\n<p>\u5e94\u7528\u5c42\u5b9e\u73b0udp\u53ef\u9760\u4f20\u8f93<br \/>\n\u4f7f\u7528UDP\u7684\u5e94\u7528\u662f\u53ef\u80fd\u5b9e\u73b0\u53ef\u9760\u6570\u636e\u4f20\u8f93\u7684\u3002\u8fd9\u53ef\u901a\u8fc7\u5728\u5e94\u7528\u7a0b\u5e8f\u81ea\u8eab\u4e2d\u5efa\u7acb\u53ef\u9760\u6027\u673a\u5236\u6765\u5b8c\u6210\uff08\u4f8b\u5982\uff0c\u53ef\u901a\u8fc7\u589e\u52a0\u786e\u8ba4\u4e0e\u91cd\u4f20\u673a\u5236\u6765\u5b9e\u73b0\uff0c\u5982\u91c7\u7528\u6211\u4eec\u5c06\u5728\u4e0b\u4e00\u8282\u5b66\u4e60\u7684\u4e00\u4e9b\u673a\u5236\uff09\u3002\u6211\u4eec\u524d\u9762\u8bb2\u8fc7\u5728\u8c37\u6b4c\u7684Chrome \u6d4f\u89c8\u5668\u4e2d\u6240\u4f7f\u7528\u7684QUIC\u534f\u8bae\uff3bIyengar 2015\uff3d\u5728UDP\u4e4b\u4e0a\u7684\u5e94\u7528\u5c42\u534f\u8bae\u4e2d\u5b9e\u73b0\u4e86\u53ef\u9760\u6027\u3002 \u4f46\u8fd9\u5e76\u4e0d\u662f\u65e0\u8db3\u8f7b\u91cd\u7684\u4efb\u52a1\uff0c\u5b83\u4f1a\u4f7f\u5e94\u7528\u5f00\u53d1\u4eba\u5458\u957f\u65f6\u95f4\u5730\u5fd9\u4e8e\u8c03\u8bd5\u3002\u65e0\u8bba\u5982\u4f55\uff0c\u5c06\u53ef\u9760\u6027\u76f4\u63a5\u6784\u5efa\u4e8e\u5e94\u7528\u7a0b\u5e8f\u4e2d\u53ef\u4ee5\u4f7f\u5176\u201c\u5de6\u53f3\u9022\u6e90\u201d\u3002\u4e5f\u5c31\u662f\u8bf4\u5e94\u7528\u8fdb\u7a0b\u53ef\u4ee5\u8fdb\u884c\u53ef\u9760\u901a\u4fe1,\u800c\u65e0\u987b\u53d7\u5236\u4e8e\u7531TCP\u62e5\u585e\u63a7\u5236\u673a\u5236\u5f3a\u52a0\u7684\u4f20\u8f93\u901f\u7387\u9650\u5236\u3002<\/p>\n<\/li>\n<li>\n<p>\u5dee\u9519\u68c0\u6d4b<br \/>\n\u867d\u7136UDP\u63d0\u4f9b\u5dee\u9519\u68c0\u6d4b\uff0c\u4f46\u5b83\u5bf9\u5dee\u9519\u6062\u590d\u65e0\u80fd\u4e3a\u529b\u3002UDP\u7684\u67d0\u79cd\u5b9e\u73b0\u53ea\u662f\u4e22\u5f03\u53d7\u635f\u7684\u62a5\u6587\u6bb5\uff1b\u5176\u4ed6\u5b9e\u73b0\u662f\u5c06\u53d7\u635f\u7684\u62a5\u6587\u6bb5\u4ea4\u7ed9\u5e94\u7528\u7a0b\u5e8f\u5e76\u7ed9\u51fa\u8b66\u544a\u3002<\/p>\n<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"TCP\"><\/span>TCP<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>tcp\u7684\u8fde\u63a5<\/li>\n<\/ul>\n<pre><code class=\"language-html\">\u8fd9\u79cdTCP \u201c\u8fde\u63a5\u201d\u4e0d\u662f\u4e00\u6761\u50cf\u5728\u7535\u8def\u4ea4\u6362\u7f51\u7edc\u4e2d\u7684\u7aef\u5230\u7aefTDM\u6216FDM\u7535\u8def\u3002\u76f8\u53cd,\u8be5\u201c\u8fde\u63a5\u201d\u662f\u4e00\u6761\u903b\u8f91\u8fde\u63a5\n\uff0c\u5176\u5171\u540c\u72b6\u6001\u4ec5\u4fdd\u7559\u5728\u4e24\u4e2a\u901a\u4fe1\u7aef\u7cfb\u7edf\u7684TCP\u7a0b\u5e8f\u4e2d\u3002\u524d\u9762\u8bb2\u8fc7\uff0c\u7531\u4e8eTCP\u534f\u8bae\u53ea\u5728\u7aef\u7cfb\u7edf\u4e2d\u8fd0\u884c\uff0c\n\u800c\u4e0d\u5728\u4e2d\u95f4\u7684\u7f51\u7edc\u5143\u7d20\uff08\u8def\u7531\u5668\u548c\u94fe\u8def\u5c42\u4ea4\u6362\u673a\uff09\u4e2d\u8fd0\u884c\uff0c\u6240\u4ee5\u4e2d\u95f4\u7684\u7f51\u7edc\u5143\u7d20\u4e0d\u4f1a\u7ef4\u6301TCP\u8fde\u63a5\u72b6\u6001\u3002\n\u4e8b\u5b9e\u4e0a\uff0c\u4e2d\u95f4\u8def\u7531\u5668\u5bf9TCP\u8fde\u63a5\u5b8c\u5168\u89c6\u800c\u4e0d\u89c1\uff0c\u5b83\u4eec\u770b\u5230\u7684\u662f\u6570\u636e\u62a5\uff0c\u800c\u4e0d\u662f\u8fde\u63a5\u3002<\/code><\/pre>\n<pre><code class=\"language-html\">TCP\u8fde\u63a5\u4e5f\u603b\u662f\u70b9\u5bf9\u70b9\uff08point-to-point\uff09\u7684\uff0c\u5373\u5728\u5355\u4e2a\u53d1\u9001 \u65b9\u4e0e\u5355\u4e2a\u63a5\u6536\u65b9\u4e4b\u95f4\u7684\u8fde\u63a5\u3002\n\u6240\u8c13\u201c\u591a\u64ad\u201d\uff08\u53c2\u89c1\u672c\u4e66\u7684\u5728\u7ebf\u8865\u5145\u6750\u6599\uff09\uff0c\u5373\u5728\u4e00\u6b21\u53d1\u9001 \u64cd\u4f5c\u4e2d\uff0c\u4ece\u4e00\u4e2a\u53d1\u9001\u65b9\u5c06\u6570\u636e\u4f20\u9001\u7ed9\u591a\u4e2a\u63a5\u6536\u65b9\uff0c\n\u8fd9\u79cd\u60c5\u51b5\u5bf9TCP\u6765\u8bf4\u662f\u4e0d\u53ef\u80fd\u7684\u3002<\/code><\/pre>\n<ul>\n<li>\n<p>\u53d1\u9001\u7f13\u5b58\u4e0e\u63a5\u6536\u7f13\u5b58<\/p>\n<\/li>\n<li>\n<p>\u6d41\u91cf\u63a7\u5236<\/p>\n<\/li>\n<li>\n<p>\u62e5\u585e\u63a7\u5236\u539f\u56e0\u53ca\u65b9\u6cd5<\/p>\n<\/li>\n<\/ul>\n<h3><span class=\"ez-toc-section\" id=\"%E5%9B%9B%E3%80%81%E7%BD%91%E7%BB%9C%E5%B1%82\"><\/span>\u56db\u3001\u7f51\u7edc\u5c42<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"1%E6%95%B0%E6%8D%AE%E5%B9%B3%E9%9D%A2%E4%B8%8E%E6%8E%A7%E5%88%B6%E5%B9%B3%E9%9D%A2\"><\/span>1.\u6570\u636e\u5e73\u9762\u4e0e\u63a7\u5236\u5e73\u9762<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>\u6570\u636e\u5e73\u9762\u529f\u80fd<\/strong>\uff1a\u5373\u7f51\u7edc\u5c42\u4e2d\u6bcf\u53f0\u8def\u7531\u5668\u7684\u529f\u80fd\uff0c\u8be5\u6570\u636e\u5e73\u9762\u529f\u80fd\u51b3\u5b9a\u5230\u8fbe\u8def\u7531\u5668\u8f93\u5165\u94fe \u8def\u4e4b\u4e00\u7684\u6570\u636e\u62a5\uff08\u5373\u7f51\u7edc\u5c42\u7684\u5206\u7ec4\uff09\u5982\u4f55\u8f6c\u53d1\u5230\u8be5\u8def\u7531\u5668\u7684\u8f93\u51fa\u94fe\u8def\u4e4b\u4e00\u3002<\/p>\n<p><strong>\u63a7\u5236\u5e73\u9762\u529f\u80fd<\/strong>\uff1a\u5373\u7f51\u7edc\u8303\u56f4\u7684\u903b\u8f91\uff0c\u8be5\u63a7\u5236\u5e73\u9762\u529f\u80fd \u63a7\u5236\u6570\u636e\u62a5\u6cbf\u7740\u4ece\u6e90\u4e3b\u673a\u5230\u76ee\u7684\u4e3b\u673a\u7684\u7aef\u5230\u7aef\u8def\u5f84\u4e2d\u8def\u7531\u5668\u4e4b\u95f4\u7684\u8def\u7531\u65b9\u5f0f\u3002<\/p>\n<p><strong>\u8f6c\u53d1(forwarding)<\/strong>:\u662f\u6307\u5c06\u5206\u7ec4\u4ece\u4e00\u4e2a\u8f93\u5165\u94fe\u8def\u63a5\u53e3\u8f6c\u79fb\u5230\u9002\u5f53\u7684\u8f93\u51fa\u94fe\u8def\u63a5\u53e3\u7684\u8def\u7531\u5668\u672c\u5730\u52a8\u4f5c\u3002\u8f6c\u53d1\u53d1\u751f\u7684\u65f6\u95f4\u5c3a\u5ea6\u5f88\u77ed(\u901a\u5e38\u4e3a\u51e0\u7eb3\u79d2)\uff0c\u56e0\u6b64\u901a\u5e38\u7528\u786c\u4ef6\u6765\u5b9e\u73b0\u3002\u8f6c\u53d1\u662f\u7531\u7f51\u7edc\u5c42\u7684\u6570\u636e\u5e73\u9762\u6267\u884c\u7684\u4e3b\u8981\u529f\u80fd\u3002<\/p>\n<p><strong>\u8def\u7531\u9009\u62e9(routing)<\/strong>:\u6307\u786e\u5b9a\u5206\u7ec4\u4ece\u6e90\u5230\u76ee\u7684\u5730\u6240\u91c7\u53d6\u7684\u7aef\u5230\u7aef\u8def\u5f84\u7684\u7f51\u7edc\u8303\u56f4\u5904\u7406\u8fc7\u7a0b\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"2%E8%B7%AF%E7%94%B1%E5%99%A8%E7%9A%84%E5%B7%A5%E4%BD%9C%E5%8E%9F%E7%90%86\"><\/span>2.\u8def\u7531\u5668\u7684\u5de5\u4f5c\u539f\u7406<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h5><span class=\"ez-toc-section\" id=\"%E6%8E%A5%E5%8F%A3\"><\/span>\u63a5\u53e3<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p><strong>\u4e3b\u673a<\/strong>\u4e0e<strong>\u7269\u7406\u94fe\u8def<\/strong>\u4e4b\u95f4\u7684\u8fb9\u754c\u53eb\u505a<strong>\u7f51\u7edc\u63a5\u53e3<\/strong>\uff08Interface\uff0c\u4e5f\u53eb<strong>\u7f51\u5361<\/strong>\uff09\u3002<\/p>\n<p>\u4e3b\u673a\u901a\u5e38\u53ea\u6709\u4e00\u4e2a\u7f51\u7edc\u63a5\u53e3\uff08\u4e5f\u53ef\u80fd\u662f\u4e24\u4e2a\uff1a\u6709\u7ebf\u7f51\u63a5\u53e3\u548c\u65e0\u7ebf\u7f51\u63a5\u53e3\uff09\uff1b\u800c\u8def\u7531\u5668\u7531\u4e8e\u662f\u4e0d\u540c\u7f51\u7edc\u95f4\u7684\u4ea4\u63a5\u4e2d\u5fc3\uff0c\u6240\u4ee5\u8def\u7531\u5668\u81f3\u5c11\u9700\u8981\u4e0e\u4e24\u6761\u7f51\u7edc\u94fe\u8def\u76f8\u8fde\uff0c\u56e0\u6b64\u8def\u7531\u5668\u62e5\u6709\u591a\u4e2a\u7f51\u7edc\u63a5\u53e3\u3002<\/p>\n<p>\u4ece\u6280\u672f\u4e0a\u8bb2\uff0c\u4e00\u4e2aIP\u5730\u5740\u4e0e\u4e00\u4e2a\u7f51\u7edc\u63a5\u53e3\uff08\u7f51\u5361\uff09\u76f8\u5173\u8054\uff0c\u800c\u4e0d\u662f\u4e3b\u673a\u6216\u8def\u7531\u5668\uff08\u53ef\u80fd\u662f\u65b9\u4fbf\u7f51\u7edc\u7ba1\u7406\uff09\u3002\u6bd4\u5982\uff1a\u8def\u7531\u5668\u901a\u5e38\u6709\u5185\u7f51\u63a5\u53e3\u548c\u516c\u7f51\u63a5\u53e3\uff0c\u800c\u5185\u7f51\u63a5\u53e3\u548c\u516c\u7f51\u63a5\u53e3\u7684IP\u5730\u5740\u662f\u4e0d\u76f8\u540c\u7684\u3002<\/p>\n<h5><span class=\"ez-toc-section\" id=\"%E5%AD%90%E7%BD%91\"><\/span>\u5b50\u7f51<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p><a href=\"http:\/\/www.360doc.com\/content\/21\/0224\/15\/51547791_963741451.shtml\">http:\/\/www.360doc.com\/content\/21\/0224\/15\/51547791_963741451.shtml<\/a><br \/>\n\u5b9a\u4e49\uff1a\u4e3a\u4e86\u786e\u5b9a\u5b50\u7f51\uff0c\u5206\u5f00\u4e3b\u673a\u548c\u8def\u7531\u5668\u7684\u6bcf\u4e2a\u63a5\u53e3\uff0c\u4ea7\u751f\u51e0\u4e2a\u9694\u79bb\u7684\u7f51\u7edc\u5c9b\uff0c\u4f7f<br \/>\n\u7528\u63a5\u53e3\u7aef\u63a5\u8fd9\u4e9b\u9694\u79bb\u7684\u7f51\u7edc\u7684\u7aef\u70b9\u3002\u8fd9\u4e9b\u9694\u79bb\u7684\u7f51\u7edc\u4e2d\u7684\u6bcf\u4e00\u4e2a\u90fd\u53eb\u4f5c\u4e00\u4e2a<strong>\u5b50\u7f51<br \/>\n(subnet)<\/strong> \u3002<\/p>\n<h5><span class=\"ez-toc-section\" id=\"IP%E5%88%86%E9%85%8D\"><\/span>IP\u5206\u914d<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<ul>\n<li>1.\u83b7\u53d6\u4e00\u5757\u5730\u5740<\/li>\n<li>2.\u83b7\u53d6\u4e3b\u673a\u5730\u5740<\/li>\n<\/ul>\n<blockquote>\n<p><strong>\u7528\u52a8\u6001\u4e3b\u673a\u914d\u7f6e\u534f\u8bae<\/strong>\uff08Dynamic Host Configuration, DHCP)<\/p>\n<\/blockquote>\n<p>\u53c8\u53eb\u5373\u63d2\u5373\u7528\u534f\u8bae\uff08plug-and play protocol\uff09\u6216\u96f6\u914d\u7f6e\uff08zeroconf\uff09\u534f\u8bae\u3002<\/p>\n<p>DHCP\u662f\u4e00\u4e2a<strong>\u5ba2\u6237-\u670d\u52a1\u5668<\/strong>\u534f\u8bae\u3002\u5ba2\u6237\u901a\u5e38\u662f\u65b0\u5230\u8fbe\u7684\u4e3b\u673a\uff0c\u5b83\u8981\u83b7\u5f97\u5305\u62ec\u81ea\u8eab\u4f7f\u7528<br \/>\n\u7684IP\u5730\u5740\u5728\u5185\u7684\u7f51\u7edc\u914d\u7f6e\u4fe1\u606f\u3002<\/p>\n<h5><span class=\"ez-toc-section\" id=\"0000%E4%B8%8E255255255255\"><\/span>0.0.0.0\u4e0e255.255.255.255<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p><a href=\"https:\/\/blog.csdn.net\/SPOTO2021\/article\/details\/119324935\">https:\/\/blog.csdn.net\/SPOTO2021\/article\/details\/119324935<\/a><\/p>\n<h5><span class=\"ez-toc-section\" id=\"NAT%E4%BD%BF%E8%83%BD%E8%B7%AF%E7%94%B1%E5%99%A8\"><\/span>NAT\u4f7f\u80fd\u8def\u7531\u5668<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>NAT\u4f7f\u80fd\u8def\u7531\u5668\u5bf9\u4e8e\u5916\u90e8\u4e16\u754c\u6765\u8bf4\u751a\u81f3\u4e0d\u50cf\u4e00\u53f0\u8def\u7531\u5668\u3002\u76f8\u53cdNAT\u8def\u7531\u5668\u5bf9\u5916\u754c\u7684 \u884c\u4e3a\u5c31\u5982\u540c\u4e00\u4e2a\u5177\u6709\u5355\u4e00 IP\u5730\u5740\u7684\u5355\u4e00\u8bbe\u5907\u3002\u5728\u56fe4-25\u4e2d\uff0c\u6240\u6709\u79bb\u5f00\u5bb6\u5ead\u8def\u7531\u5668\u6d41\u5411\u66f4 \u5927\u56e0\u7279\u7f51\u7684\u62a5\u6587\u90fd\u62e5\u6709\u4e00\u4e2a\u6e90IP\u5730\u5740138. 76. 29. 7,\u4e14\u6240\u6709\u8fdb\u5165\u5bb6\u5ead\u7684\u62a5\u6587\u90fd\u62e5\u6709\u540c\u4e00\u4e2a \u76ee\u7684IP\u5730\u574013.76.29.70\u4ece\u672c\u8d28\u4e0a\u8bb2\uff0cNAT\u4f7f\u80fd\u8def\u7531\u5668\u5bf9\u5916\u754c\u9690\u85cf\u4e86\u5bb6\u5ead\u7f51\u7edc\u7684\u7ec6\u8282\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"3%E6%8E%A7%E5%88%B6%E5%B9%B3%E9%9D%A2\"><\/span>3.\u63a7\u5236\u5e73\u9762<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h5><span class=\"ez-toc-section\" id=\"%E8%B7%AF%E7%94%B1%E9%80%89%E6%8B%A9%E7%AE%97%E6%B3%95\"><\/span>\u8def\u7531\u9009\u62e9\u7b97\u6cd5<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<blockquote>\n<p>\u5212\u5206\u65b9\u5f0f1<\/p>\n<\/blockquote>\n<ul>\n<li>\u96c6\u4e2d\u5f0f<\/li>\n<li>\u5206\u5e03\u5f0f<\/li>\n<\/ul>\n<blockquote>\n<p>\u5212\u5206\u65b9\u5f0f2<\/p>\n<\/blockquote>\n<ul>\n<li>\u9759\u6001<\/li>\n<li>\u52a8\u6001<\/li>\n<\/ul>\n<blockquote>\n<p>\u5212\u5206\u65b9\u5f0f3<\/p>\n<\/blockquote>\n<ul>\n<li>\u8d1f\u8f7d\u654f\u611f<\/li>\n<li>\u8d1f\u8f7d\u8fdf\u949d<\/li>\n<\/ul>\n<h5><span class=\"ez-toc-section\" id=\"%E5%86%85%E9%83%A8%E8%B7%AF%E7%94%B1-%E8%87%AA%E6%B2%BB%E7%B3%BB%E7%BB%9F%EF%BC%88Autonomous_System_AS%EF%BC%89\"><\/span>\u5185\u90e8\u8def\u7531-\u81ea\u6cbb\u7cfb\u7edf\uff08Autonomous System, AS\uff09<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>\u6bcf\u4e2aAS\u7531\u4e00\u7ec4\u901a\u5e38\u5904\u5728\u76f8\u540c\u7ba1\u7406\u63a7\u5236\u4e0b\u7684\u8def\u7531\u5668\u7ec4\u6210\u3002\u901a\u5e38\u5728\u4e00\u4e2aISP\u4e2d\u7684\u8def\u7531\u5668 \u4ee5\u53ca\u4e92\u8054\u5b83\u4eec\u7684\u94fe\u8def\u6784\u6210\u4e00\u4e2aAS<\/p>\n<p>\u5728\u4e00\u4e2a\u81ea\u6cbb\u7cfb \u7edf\u5185\u8fd0\u884c\u7684\u8def\u7531\u9009\u62e9\u7b97\u6cd5\u53eb\u4f5c<strong>\u81ea\u6cbb\u7cfb\u7edf\u5185\u90e8\u8def\u7531\u9009\u62e9\u534f\u8bae<\/strong>\uff08intra -autonomous system routing protocol\uff09<\/p>\n<blockquote>\n<p>OSPF\u534f\u8bae<\/p>\n<\/blockquote>\n<p>\u5f00\u653e\u6700\u77ed\u8def\u4f18\u5148\uff08OSPF\uff09<\/p>\n<h5><span class=\"ez-toc-section\" id=\"ISP%E4%B9%8B%E9%97%B4%E8%B7%AF%E7%94%B1-%E8%87%AA%E6%B2%BB%E7%B3%BB%E7%BB%9F%E9%97%B4%E8%B7%AF%E7%94%B1%E9%80%89%E6%8B%A9%E5%8D%8F%E8%AE%AE%EF%BC%88inter-_autonomous_system_routing_protocol%EF%BC%89\"><\/span>ISP\u4e4b\u95f4\u8def\u7531-\u81ea\u6cbb\u7cfb\u7edf\u95f4\u8def\u7531\u9009\u62e9\u534f\u8bae\uff08inter- autonomous system routing protocol\uff09<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<blockquote>\n<p>BGP\u534f\u8bae<\/p>\n<\/blockquote>\n<p>\u5728\u56e0\u7279\u7f51\u4e2d\uff0c\u6240\u6709\u7684AS\u8fd0\u884c\u76f8\u540c\u7684AS\u95f4\u8def\u7531\u9009\u62e9\u534f\u8bae\uff0c\u79f0\u4e3a<strong>\u8fb9\u754c\u7f51\u5173\u534f\u8bae<\/strong>\uff08Broder Gateway Protocol, <strong>BGP<\/strong>\uff09\u3002<\/p>\n<p>\u4f5c\u7528\u4e00\uff1aAS\u95f4\u8def\u7531<br \/>\n\u4f5c\u7528\u4e8c\uff1aIP\u4efb\u64ad\uff08DNS\u670d\u52a1\uff09<\/p>\n<h4><span class=\"ez-toc-section\" id=\"4SDN%E6%8E%A7%E5%88%B6%E5%B9%B3%E9%9D%A2\"><\/span>4.SDN\u63a7\u5236\u5e73\u9762<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h3><span class=\"ez-toc-section\" id=\"%E4%BA%94%E3%80%81%E9%93%BE%E8%B7%AF%E5%B1%82%E5%92%8C%E5%B1%80%E5%9F%9F%E7%BD%91\"><\/span>\u4e94\u3001\u94fe\u8def\u5c42\u548c\u5c40\u57df\u7f51<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>\u94fe\u8def\u5c42\u7684\u4e3b\u4f53\u90e8\u5206\u662f\u5728<strong>\u7f51\u7edc\u9002\u914d\u5668\uff08network adapter\uff09<\/strong>\u4e2d\u5b9e\u73b0\u7684\uff0c\u7f51\u7edc\u9002\u914d\u5668\u6709\u65f6\u4e5f\u79f0\u4e3a<strong>\u7f51\u7edc\u63a5\u53e3\u5361\uff08Network Interface Card, NIC \uff09<\/strong> \u3002\u4f4d\u4e8e\u7f51\u7edc\u9002\u914d\u5668\u6838\u5fc3\u7684\u662f\u94fe\u8def\u5c42\u63a7\u5236\u5668\uff0c\u8be5\u63a7\u5236\u5668\u901a\u5e38\u662f\u4e00\u4e2a\u5b9e\u73b0\u4e86\u8bb8\u591a\u94fe\u8def\u5c42\u670d\u52a1\uff08\u6210 \u5e27\u3001\u94fe\u8def\u63a5\u5165\u3001\u5dee\u9519\u68c0\u6d4b\u7b49\uff09\u7684\u4e13\u7528\u82af\u7247\u3002\u56e0\u6b64\uff0c\u94fe\u8def\u5c42\u63a7\u5236\u5668\u7684\u8bb8\u591a\u529f\u80fd\u662f\u7528<strong>\u786c\u4ef6<\/strong>\u5b9e\u73b0\u7684\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"1%E5%A4%9A%E8%B7%AF%E8%AE%BF%E9%97%AE%E9%93%BE%E8%B7%AF%E5%92%8C%E5%8D%8F%E8%AE%AE\"><\/span>1.\u591a\u8def\u8bbf\u95ee\u94fe\u8def\u548c\u534f\u8bae<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u5c06\u8fd0\u884c\u94fe\u8def\u5c42\u534f\u8bae\uff08\u5373\u7b2c2\u5c42\uff09\u534f\u8bae\u7684\u4efb\u4f55\u8bbe\u5907\u5747\u79f0\u4e3a<strong>\u8282\u70b9<\/strong>\uff08node\uff09<\/p>\n<blockquote>\n<h5><span class=\"ez-toc-section\" id=\"%E5%8D%8F%E8%AE%AE%E5%88%92%E5%88%86\"><\/span>\u534f\u8bae\u5212\u5206<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<\/blockquote>\n<p>\u591a\u8def\u8bbf\u95ee\u534f\u8bae\u5212\u5206\u4e3a3\u79cd\u7c7b\u578b\u4e4b\u4e00\uff1a\u4fe1\u9053\u5212\u5206\u534f\u8bae\uff08channel partitioning protocol\uff09,\u968f\u673a\u63a5\u5165\u534f\u8bae\uff08random access protocol\uff09\u548c\u8f6e\u6d41\u534f\u8bae\uff08taking-lurns protocol\uff09\u3002<\/p>\n<ul>\n<li>\n<p>\u4fe1\u9053\u5212\u5206\u534f\u8bae<br \/>\n\u65f6\u5206\u591a\u8def\u590d\u7528\uff08TDM\uff09\u548c\u9891\u5206\u591a\u8def\u590d\u7528\uff08FDM\uff09\u3001\u7801\u5206\u591a\u5740\uff08Code Division Multiple Access, CDMA\uff09<\/p>\n<\/li>\n<li>\n<p>\u968f\u673a\u63a5\u5165\u534f\u8bae<br \/>\n\u548c\u8f7d\u6ce2\u4fa6\u542c\u591a\u8def\u8bbf\u95ee\uff08CSMA \uff09\u534f\u8bae<\/p>\n<\/li>\n<li>\n<p>\u8f6e\u6d41\u534f\u8bae<br \/>\n\u8f6e\u8be2\u534f\u8bae(polling protocol) \u3001\u4ee4\u724c\u4f20\u9012\u534f\u8bae(token-passing protocol)<\/p>\n<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"2%E4%BA%A4%E6%8D%A2%E5%B1%80%E5%9F%9F%E7%BD%91\"><\/span>2.\u4ea4\u6362\u5c40\u57df\u7f51<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h5><span class=\"ez-toc-section\" id=\"1%EF%BC%89%E9%93%BE%E6%8E%A5%E5%B1%82%E5%AF%BB%E5%9D%80%E5%92%8CARP\"><\/span>1\uff09\u94fe\u63a5\u5c42\u5bfb\u5740\u548cARP<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<ul>\n<li>MAC\u5730\u5740<\/li>\n<\/ul>\n<p>\u94fe\u8def\u5c42\u5730\u5740\u6709\u5404\u79cd\u4e0d\u540c\u7684\u79f0\u547c\uff1a<strong>LAN\u5730\u5740\uff08LAN address\uff09<\/strong> \u3001<strong>\u7269\u7406\u5730\u5740\uff08physical<br \/>\naddress\uff09<\/strong>\u6216<strong>MAC\u5730\u5740\uff08MAC address\uff09<\/strong>\u3002\u56e0\u4e3aMAC\u5730\u5740\u4f3c\u4e4e\u662f\u6700\u4e3a\u6d41\u884c\u7684\u672f\u8bed\uff0c\u6240\u4ee5\u6211\u4eec<br \/>\n\u6b64\u540e\u5c31\u5c06\u94fe\u8def\u5c42\u5730\u5740\u79f0\u4e3aMAC\u5730\u5740\u3002<\/p>\n<ul>\n<li>\n<p>ARP\u534f\u8bae(\u5730\u5740\u89e3\u6790\u534f\u8bae)<\/p>\n<\/li>\n<li>\n<p>\u53d1\u9001\u6570\u636e\u62a5\u5230\u5b50\u7f51\u4ee5\u5916<br \/>\n\u5b50\u7f511\u4e0e\u5b50\u7f512\u4e4b\u95f4\u4f7f\u7528\u8def\u7531\u5668\u8fde\u63a5\uff0c\u5982\u679c\u5b50\u7f511\u4e2d\u7684\u4e3b\u673a\u8981\u4e0e\u5b50\u7f512\u4e2d\u7684\u4e3b\u673a\u901a\u8baf\uff0c\u5b50\u7f511\u4f1a\u901a\u8fc7ARP\u83b7\u53d6\u8def\u7531\u5668\u7684mac\u5730\u5740\uff0c\u800c\u975e\u5b50\u7f512\u4e2d\u4e3b\u673a\u7684mac\u5730\u5740\u3002<\/p>\n<\/li>\n<\/ul>\n<h5><span class=\"ez-toc-section\" id=\"2%EF%BC%89%E4%BB%A5%E5%A4%AA%E7%BD%91\"><\/span>2\uff09\u4ee5\u592a\u7f51<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<ul>\n<li>\u4ee5\u592a\u7f51\u5e27<br \/>\n\u76ee\u7684\u5730\u5740\uff1a\u76ee\u7684\u9002\u914d\u5668\u7684<strong>MAC\u5730\u5740<\/strong><br \/>\n\u6e90\u5730\u5740\uff1a\u6e90\u9002\u914d\u5668\u7684<strong>MAC\u5730\u5740<\/strong><\/li>\n<\/ul>\n<h5><span class=\"ez-toc-section\" id=\"3%EF%BC%89%E9%93%BE%E8%B7%AF%E5%B1%82%E4%BA%A4%E6%8D%A2%E6%9C%BA\"><\/span>3\uff09\u94fe\u8def\u5c42\u4ea4\u6362\u673a<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>a.\u4ea4\u6362\u673a\u4e0e\u8def\u7531\u5668\u7684\u533a\u522b<\/p>\n<h5><span class=\"ez-toc-section\" id=\"4%EF%BC%89%E8%99%9A%E6%8B%9F%E5%B1%80%E5%9F%9F%E7%BD%91\"><\/span>4\uff09\u865a\u62df\u5c40\u57df\u7f51<span class=\"ez-toc-section-end\"><\/span><\/h5>\n<p>\u6301\u865a\u62df\u5c40\u57df\u7f51\uff08Virtula Local Network,VLAN\uff09\u7684<\/p>\n<h4><span class=\"ez-toc-section\" id=\"3%E9%93%BE%E8%B7%AF%E8%99%9A%E6%8B%9F%E5%8C%96%EF%BC%9A%E7%BD%91%E7%BB%9C%E4%BD%9C%E4%B8%BA%E9%93%BE%E8%B7%AF%E5%B1%82\"><\/span>3.\u94fe\u8def\u865a\u62df\u5316\uff1a\u7f51\u7edc\u4f5c\u4e3a\u94fe\u8def\u5c42<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\u591a\u534f\u8bae\u6807\u7b7e\u4ea4\u6362\uff08Mulliprotocol Label Switching, MPLS\uff09<br \/>\n\u4e00\u4e2aMPLS\u4f7f\u80fd\u7684\u8def\u7531\u5668\u5e38\u88ab\u79f0\u4e3a\u6807\u7b7e\u4ea4\u6362\u8def\u7531\u5668\uff08label- switched router\uff09<\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"4%E6%95%B0%E6%8D%AE%E4%B8%AD%E5%BF%83%E7%BD%91%E7%BB%9C\"><\/span>4.\u6570\u636e\u4e2d\u5fc3\u7f51\u7edc<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<h4><span class=\"ez-toc-section\" id=\"5web%E9%A1%B5%E9%9D%A2%E8%AF%B7%E6%B1%82%E7%9A%84%E5%8E%86%E7%A8%8B\"><\/span>5.web\u9875\u9762\u8bf7\u6c42\u7684\u5386\u7a0b<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>\u8bf7\u6c42www.baidu.com \u9875\u9762<br \/>\n1\uff09\u5ba2\u6237\u7aefIP\u5206\u914d\uff1a\u8fd0\u884cDHCP\u534f\u8bae,\u4ee5\u4ece\u672c\u5730DHCP\u670d\u52a1\u5668\u83b7\u5f97\u4e00\u4e2aIP\u5730\u5740\u4ee5\u53ca\u5176\u4ed6\u4fe1\u606f\u3002<br \/>\n\u540c\u65f6\u8fd4\u56de\u7f51\u5173\u8def\u7531\u5668\u7684ip\u5730\u5740\u3002<br \/>\n2) DNS\u8bf7\u6c42\uff1a<br \/>\n2-1\uff1a\u901a\u8fc7\u53d1\u9001ARP\u67e5\u8be2\u62a5\u6587\uff0c\u83b7\u53d6\u7f51\u5173\u8def\u7531\u5668\u7684MAC\u5730\u5740\u3002<\/p>\n<p>2-2\uff1a\u5411\u7f51\u5173\u8def\u7531\u5668\u53d1\u9001\u4ee5\u592a\u7f51\u5e27<br \/>\n\u6700\u7ec8\u80fd\u591f\u4f7f\u5305\u542bDNS\u67fb\u8be2\u7684\u4ee5\u592a\u7f51\u5e27\u5bfb\u5740\u5230\u7f51\u5173\u8def\u7531\u5668\u7684 MAC\u5730\u5740\u3002\u6ce8\u610f\u5230\u5728\u8be5\u5e27\u4e2d\u7684IP\u6570\u636e\u62a5\u5177\u6709IP\u76ee\u7684\u5730\u574068. 87.71.226 \uff08 DNS\u670d\u52a1\u5668\uff09, \u800c\u8be5\u5e27\u5177\u6709\u76ee\u7684\u5730\u5740OO\uff1a22\uff1a6B\uff1a45\uff1aFF\uff1a1B \uff08\u7f51\u5173\u8def\u7531\u5668\uff09\u3002Bob\u4fbf\u643a\u673a\u5411\u4ea4\u6362\u673a\u53d1\u9001\u8be5\u5e27, \u4ea4\u6362\u673a\u5c06\u8be5\u5e27\u4ea4\u4ed8\u7ed9\u7f51\u5173\u8def\u7531\u5668\u3002<\/p>\n<p>2-3\uff1a\u8def\u7531\u5230DNS\u670d\u52a1\u5668<\/p>\n<p>2-4\uff1a\u5ba2\u6237\u7aef\u83b7\u53d6\u5230DNS\u8fd4\u56de\u7684IP\u5730\u5740<br \/>\n3\uff09\u53d1\u9001HTTP\u8bf7\u6c42<\/p>\n<p>3-1\uff1a\u5efa\u7acbtcp\u8fde\u63a5<br \/>\n3-2\uff1a\u53d1\u9001HTTP-GET\u8bf7\u6c42<\/p>\n<h3><span class=\"ez-toc-section\" id=\"%E5%85%AD%E3%80%81%E7%A7%BB%E5%8A%A8%E7%BD%91%E7%BB%9C%E5%92%8C%E6%97%A0%E7%BA%BF%E7%BD%91%E7%BB%9C\"><\/span>\u516d\u3001\u79fb\u52a8\u7f51\u7edc\u548c\u65e0\u7ebf\u7f51\u7edc<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<h4><span class=\"ez-toc-section\" id=\"1%E6%A6%82%E8%BF%B0\"><\/span>1.\u6982\u8ff0<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<ul>\n<li>\n<p>\u65e0\u7ebf\u4e3b\u673a<\/p>\n<\/li>\n<li>\n<p>\u65e0\u7ebf\u94fe\u8def<\/p>\n<\/li>\n<li>\n<p>\u57fa\u7ad9<\/p>\n<\/li>\n<\/ul>\n<p>\u4e0e\u57fa\u7ad9\u5173\u8054\u7684\u4e3b\u673a\u901a\u5e38\u88ab\u79f0\u4e3a\u4ee5<strong>\u57fa\u7840\u8bbe\u65bd\u6a21\u5f0f\uff08infrastructure mode\uff09<\/strong>\u8fd0\u884c\uff0c\u56e0\u4e3a\u6240\u6709 \u4f20\u7edf\u7684\u7f51\u7edc\u670d\u52a1\uff08\u5982\u5730\u5740\u5206\u914d\u548c\u8def\u7531\u9009\u62e9\uff09\u90fd\u7531\u7f51\u7edc\u5411\u901a\u8fc7\u57fa\u7ad9\u76f8\u8fde\u7684\u4e3b\u673a\u63d0\u4f9b\u3002\u5728\u81ea\u7ec4 \u7ec7\u7f51\u7edc\uff08ad hoc network\uff09\u4e2d\uff0c\u65e0\u7ebf\u4e3b\u673a\u6ca1\u6709\u8fd9\u6837\u7684\u57fa\u7840\u8bbe\u65bd\u4e0e\u4e4b\u76f8\u8fde\u3002\u5728\u6ca1\u6709\u8fd9\u6837\u7684\u57fa\u7840 \u8bbe\u65bd\u7684\u60c5\u51b5\u4e0b\uff0c\u4e3b\u673a\u672c\u8eab\u5fc5\u987b\u63d0\u4f9b\u8bf8\u5982\u8def\u7531\u9009\u62e9\u3001\u5730\u5740\u5206\u914d\u3001\u7c7b\u4f3c\u4e8eDNS\u7684\u540d\u5b57\u8f6c\u6362\u7b49 \u670d\u52a1\u3002<\/p>\n<p>\u5f53\u4e00\u53f0\u79fb\u52a8\u4e3b\u673a\u7684\u79fb\u52a8\u8d85\u51fa\u4e00\u4e2a\u57fa\u7ad9\u7684\u8986\u76d6\u8303\u56f4\u800c\u5230\u8fbe\u53e6\u4e00\u4e2a\u57fa\u7ad9\u7684\u8986\u76d6\u8303\u56f4\u540e\uff0c\u5b83 \u5c06\u6539\u53d8\u5176\u63a5\u5165\u5230\u66f4\u5927\u7f51\u7edc\u7684\u8fde\u63a5\u70b9\uff08\u5373\u6539\u53d8\u4e0e\u4e4b\u76f8\u5173\u8054\u7684\u57fa\u7ad9\uff09\uff0c\u8fd9\u4e00\u8fc7\u7a0b\u79f0\u4f5c<strong>\u5207\u6362<\/strong><\/p>\n<ul>\n<li>\u7f51\u7edc\u57fa\u7840\u8bbe\u65bd<\/li>\n<\/ul>\n<p>\u6839\u636e\u4e24 \u4e2a\u51c6\u5219\u6765\u5bf9\u65e0\u7ebf\u7f51\u7edc\u5206\u7c7b\uff1a<br \/>\n\u2460\u5728\u8be5\u65e0\u7ebf\u7f51\u7edc\u4e2d\u7684\u5206\u7ec4\u662f\u5426\u8de8\u8d8a\u4e86\u4e00\u4e2a\u65e0\u7ebf\u8df3\u6216\u591a\u4e2a\u65e0\u7ebf \u8df3\uff1b<br \/>\n\u2461\u7f51\u7edc\u4e2d\u662f\u5426\u6709\u8bf8\u5982\u57fa\u7ad9\u8fd9\u6837\u7684\u57fa\u7840\u8bbe\u65bd\u3002<\/p>\n<ul>\n<li>\u5355\u8df3\u4e0e\u591a\u8df3<br \/>\n<a href=\"https:\/\/blog.csdn.net\/weixin_45766278\/article\/details\/124577241\">https:\/\/blog.csdn.net\/weixin_45766278\/article\/details\/124577241<\/a><\/li>\n<\/ul>\n<h4><span class=\"ez-toc-section\" id=\"2%E6%97%A0%E7%BA%BF%E9%93%BE%E8%B7%AF%E5%92%8C%E7%BD%91%E7%BB%9C%E7%89%B9%E5%BE%81\"><\/span>2.\u65e0\u7ebf\u94fe\u8def\u548c\u7f51\u7edc\u7279\u5f81<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p><strong>CDMA<\/strong>\uff1aCDMA\u6307\u7801\u5206\u591a\u5740\uff0c\u662f\u4e00\u79cd\u6269\u9891\u591a\u5740\u6570\u5b57\u5f0f\u901a\u4fe1\u6280\u672f\uff0c\u901a\u8fc7\u72ec\u7279\u7684\u4ee3\u7801\u5e8f\u5217\u5efa\u7acb\u4fe1\u9053\uff0c\u6297\u5e72\u6270\u80fd\u529b\u5f3a\uff0c\u5bbd\u5e26\u4f20\u8f93\u53ca\u6297\u8870\u843d\u80fd\u529b\u5f3a\u3002CDMA\u662f\u4e00\u79cd\u591a\u8def\u65b9\u5f0f\uff0c\u591a\u8def\u4fe1\u53f7\u53ea\u5360\u7528\u4e00\u6761\u4fe1\u9053\uff0c\u6781\u5927\u63d0\u9ad8\u5e26\u5bbd\u4f7f\u7528\u7387\u3002<\/p>\n<h4><span class=\"ez-toc-section\" id=\"3WiFi\"><\/span>3.WiFi<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<p>WiFi\uff1aIEEE 802.11\u65e0\u7ebfLAN<\/p>\n<ul>\n<li>\n<ol start=\"802\">\n<li>11\u4f53\u7cfb\u7ed3\u6784<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<p>802.11\u4f53\u7cfb\u7ed3\u6784\u7684\u57fa\u672c\u6784\u4ef6\u6a21 \u5757\u662f<strong>\u57fa\u672c\u670d\u52a1\u96c6\uff08Basic Service Set, BSS\uff09<\/strong>.\u4e00\u4e2aBSS\u5305\u542b\u4e00\u4e2a\u6216\u591a\u4e2a\u65e0\u7ebf\u7ad9<br \/>\n\u70b9\u548c\u4e00\u4e2a\u5728 802.11\u672f\u8bed\u4e2d\u79f0\u4e3a<strong>\u63a5\u5165\u70b9\uff08Access Point, AP\uff09<\/strong>\u7684\u4e2d\u592e<strong>\u57fa\u7ad9<\/strong>\uff08base station\uff09.<\/p>\n<p>\u914d\u7f6eAP\u7684\u65e0\u7ebfLAN\u7ecf\u5e38\u88ab\u79f0\u4f5c<strong>\u57fa\u7840\u8bbe\u65bd\u65e0\u7ebfLAN<\/strong>\uff08infrastructure wireless LAN\uff09,<br \/>\n\u5176\u4e2d\u7684\u201c\u57fa\u7840\u8bbe\u65bd\u201d\u662f\u6307AP\u8fde\u540c\u4e92\u8054AP\u548c\u4e00\u53f0\u8def\u7531\u5668\u7684\u6709\u7ebf\u4ee5\u592a\u7f51\u3002<\/p>\n<ul>\n<li>\u4fe1\u9053\u4e0e\u5173\u8054<br \/>\n\u4e3a\u4e86\u83b7\u5f97\u56e0\u7279\u7f51\u63a5\u5165\uff0c\u4f60\u7684\u65e0\u7ebf\u7ad9\u70b9\u9700\u8981\u52a0\u5165\u5176\u4e2d\u4e00\u4e2a\u5b50\u7f51\u5e76\u56e0\u6b64\u9700\u8981\u4e0e\u5176\u4e2d\u7684\u4e00\u4e2aAP\u76f8<strong>\u5173\u8054\uff08associate\uff09<\/strong>\u3002<br \/>\n\u5173\u8054\u610f\u5473\u7740\u8fd9\u4e00\u65e0\u7ebf\u7ad9\u70b9\u5728\u81ea\u8eab\u548c\u8be5AP\u4e4b\u95f4\u521b\u5efa\u4e00\u4e2a\u865a\u62df\u7ebf\u8def\u3002\u7279\u522b\u662f\uff0c\u4ec5\u6709\u5173\u8054\u7684AP\u624d\u5411\u4f60\u7684\u65e0\u7ebf\u7ad9\u70b9\u53d1\u9001\u6570\u636e\u5e27\uff0c\u5e76\u4e14\u4f60\u7684\u65e0\u7ebf\u7ad9\u70b9\u4e5f\u4ec5\u4ec5\u901a\u8fc7\u8be5\u5173\u8054AP\u5411\u56e0\u7279\u7f51\u53d1\u9001\u6570\u636e\u5e27\u3002\u7136\u800c\uff0c\u4f60\u7684\u65e0\u7ebf\u7ad9\u70b9\u662f\u5982\u4f55\u4e0e\u67d0\u4e2a\u7279\u5b9a\u7684AP\u76f8\u5173\u8054\u7684\uff1f\u66f4\u4e3a\u6839\u672c\u7684\u95ee\u9898\u662f\uff0c\u4f60\u7684\u65e0\u7ebf\u7ad9\u70b9\u662f\u5982\u4f55\u77e5\u9053\u54ea\u4e2aAP\u4f4d\u4e8e\u8be5\u4e1b\u6797\u5462\uff1f<\/li>\n<\/ul>\n<p>WiFi\u4e1b\u6797\uff08WiFi jungle\uff09<br \/>\n\u4fe1\u6807\u5e27\uff08beacon frame\uff09<\/p>\n<p>\u626b\u63cf\u4fe1\u9053\u548c\u76d1\u542c\u4fe1\u6807\u5e27\u7684\u8fc7\u7a0b\u88ab\u79f0\u4e3a<strong>\u88ab\u52a8\u626b\u63cf\uff08passive scanning\uff09<\/strong>\uff0c\u65e0\u7ebf\u4e3b\u673a\u4e5f\u80fd\u591f\u6267\u884c<strong>\u4e3b\u52a8\u626b\u63cf\uff08active scanning\uff09<\/strong>\u3002<\/p>\n<ul>\n<li>\n<p>802.11 MAC \u534f\u8bae<br \/>\n\u94fe\u8def\u5c42\u786e\u8ba4\uff08link-layeracknowledgment\uff09\u65b9\u6848<\/p>\n<\/li>\n<li>\n<p>\u4e2a\u4eba\u57df\u7f51\u7edc\uff1a\u84dd\u7259\u548cZigBee<br \/>\nIEEE 802.11 WiFi\u6807\u51c6\u4e3b\u8981\u9488\u5bf9\u76f8\u8ddd\u591a\u8fbe100m\u7684\u8bbe\u5907\u95f4\u7684\u901a\u4fe1\uff08\u5f53 \u4f7f\u7528802.11\u5177\u6709\u5b9a\u5411\u5929\u7ebf\u7684\u70b9\u5bf9\u70b9\u914d\u7f6e\u65f6\u9664\u5916\uff09\u3002\u4e24\u4e2a\u5176\u4ed6\u7684IEEE 802\u65e0\u7ebf\u534f\u8bae\u662f<strong>\u84dd\u7259<\/strong>\u548c<strong>ZigBee<\/strong> \uff08\u5b9a\u4e49\u5728 IEEE 802.15.1 \u548c IEEE 802.15.4\u6807\u51c6\u4e2d[IEEE 802.15 2012] \uff09\u3002<\/p>\n<\/li>\n<\/ul>\n<p>802.15.1\u7f51\u7edc\u6709\u65f6\u88ab\u79f0\u4e3a<strong>\u65e0\u7ebf\u4e2a\u4eba\u57df\u7f51\u7edc\uff08WirelessPersonal Area Network, WPAN\uff09<\/strong><\/p>\n<h4><span class=\"ez-toc-section\" id=\"4%E8%9C%82%E7%AA%9D%E5%9B%A0%E7%89%B9%E7%BD%91%E6%8E%A5%E5%85%A5\"><\/span>4.\u8702\u7a9d\u56e0\u7279\u7f51\u63a5\u5165<span class=\"ez-toc-section-end\"><\/span><\/h4>\n<button class=\"simplefavorite-button\" data-postid=\"8737\" data-siteid=\"1\" data-groupid=\"1\" data-favoritecount=\"0\" style=\"\">\u6536\u85cf <i class=\"sf-icon-star-empty\"><\/i><\/button>","protected":false},"excerpt":{"rendered":"<p>\u8bfb\u8005\u7b14\u8bb0\uff1a https:\/\/www.jianshu.com\/p\/2fc36d046f44 \u672c\u4e66\u91cd\u8981\u8bf4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[906],"tags":[458],"_links":{"self":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/8737"}],"collection":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=8737"}],"version-history":[{"count":129,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/8737\/revisions"}],"predecessor-version":[{"id":15162,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=\/wp\/v2\/posts\/8737\/revisions\/15162"}],"wp:attachment":[{"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8737"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinyiworld.top\/wordpress_it\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}