{"id":1578,"date":"2021-05-22T04:16:46","date_gmt":"2021-05-21T20:16:46","guid":{"rendered":"https:\/\/www.wjxy.net.cn\/?p=1578"},"modified":"2023-10-04T06:32:36","modified_gmt":"2023-10-03T22:32:36","slug":"%e5%8d%8e%e4%b8%ba%e4%ba%a4%e6%8d%a2%e6%9c%ba%e9%85%8d%e7%bd%aedhcp-snooping%e5%8a%9f%e8%83%bd%e5%b1%8f%e8%94%bd%e9%9d%9e%e6%b3%95dhcp","status":"publish","type":"post","link":"https:\/\/www.wjxy.net.cn\/?p=1578","title":{"rendered":"\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6eDHCP snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5DHCP"},"content":{"rendered":"<div class=\"wgt-exp-head \">\n<div id=\"abstract-wp\" class=\"abstract-wp\">\n<div id=\"abstract\" class=\"abstract small\">\n<p>DHCP Snooping\u662fDHCP\uff08Dynamic Host Configuration Protocol\uff09\u7684\u4e00\u79cd\u5b89\u5168\u7279\u6027\uff0c\u7528\u4e8e\u4fdd\u8bc1DHCP\u5ba2\u6237\u7aef\u4ece\u5408\u6cd5\u7684DHCP\u670d\u52a1\u5668\u83b7\u53d6IP\u5730\u5740\uff0c\u5e76\u8bb0\u5f55DHCP\u5ba2\u6237\u7aefIP\u5730\u5740\u4e0eMAC\u5730\u5740\u7b49\u53c2\u6570\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u9632\u6b62\u7f51\u7edc\u4e0a\u9488\u5bf9DHCP\u653b\u51fb\u3002<\/p>\n<div id=\"arrow-wp\" class=\"arrow-wp small\">\n<div class=\"arrow\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"audio-content\" data-title=\"\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6eDHCP snooping\u529f\u80fd\" data-text=\"\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6eDHCP snooping\u529f\u80fd DHCP Snooping\u662fDHCP\uff08Dynamic Host Configuration Protocol\uff09\u7684\u4e00\u79cd\u5b89\u5168\u7279\u6027\uff0c\u7528\u4e8e\u4fdd\u8bc1DHCP\u5ba2\u6237\u7aef\u4ece\u5408\u6cd5\u7684DHCP\u670d\u52a1\u5668\u83b7\u53d6IP\u5730\u5740\uff0c\u5e76\u8bb0\u5f55DHCP\u5ba2\u6237\u7aefIP\u5730\u5740\u4e0eMAC\u5730\u5740\u7b49\u53c2\u6570\u7684\u5bf9\u5e94\u5173\u7cfb\uff0c\u9632\u6b62\u7f51\u7edc\u4e0a\u9488\u5bf9DHCP\u653b\u51fb\u3002\"><\/div>\n<div class=\"separator-line\"><\/div>\n<\/div>\n<div class=\"wgt-exp-content content-box\">\n<header>\n<h3>\u65b9\u6cd5\/\u6b65\u9aa4<\/h3>\n<div class=\"body\">\n<div class=\"block-ol \">\n<div class=\"block-item-header\"><span class=\"counter\"><span class=\"green\">1<\/span>\/4<\/span><span class=\"go-to-step-text\">\u5206\u6b65\u9605\u8bfb<\/span><\/div>\n<div class=\"text-container\">\n<p>DHCP Snooping\u7684\u57fa\u672c\u539f\u7406\uff1a<\/p>\n<p>\u5f00\u542f\u4e86DHCP Snooping\u7684\u8bbe\u5907\u5c06\u7528\u6237\uff08DHCP\u5ba2\u6237\u7aef\uff09\u7684DHCP\u8bf7\u6c42\u62a5\u6587\u901a\u8fc7\u4fe1\u4efb\u63a5\u53e3\u53d1\u9001\u7ed9\u5408\u6cd5\u7684DHCP\u670d\u52a1\u5668\u3002\u4e4b\u540e\u8bbe\u5907\u6839\u636eDHCP\u670d\u52a1\u5668\u56de\u5e94\u7684DHCP ACK\u62a5\u6587\u4fe1\u606f\u751f\u6210DHCP Snooping\u7ed1\u5b9a\u8868\u3002\u540e\u7eed\u8bbe\u5907\u518d\u4ece\u5f00\u542f\u4e86DHCP Snooping\u7684\u63a5\u53e3\u63a5\u6536\u7528\u6237\u53d1\u6765\u7684DHCP\u62a5\u6587\u65f6\uff0c\u4f1a\u8fdb\u884c\u5339\u914d\u68c0\u67e5\uff0c\u80fd\u591f\u6709\u6548\u9632\u8303\u975e\u6cd5\u7528\u6237\u7684\u653b\u51fb\u3002<\/p>\n<p>\u7b80\u5355\u4e00\u53e5\u8bdd\uff0c\u5c31\u662fIP\u5730\u5740\u53ea\u80fd\u4ece\u6211\u6307\u5b9a\u7684\u4fe1\u4efb\u63a5\u53e3\u83b7\u53d6\uff0c\u5176\u5b83\u63a5\u53e3\u53d1\u8fc7\u6765\u7684\u62a5\u6587\u6211\u90fd\u4e0d\u4fe1\u4efb\uff0c\u4e0d\u63a5\u53d7\uff0c\u4e5f\u4e0d\u5206\u914dIP\u5730\u5740\u3002<\/p>\n<\/div>\n<div class=\"exp-img-opt\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-1585\" src=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp.jpg\" width=\"458\" height=\"244\" srcset=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp.jpg 458w, https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-300x160.jpg 300w\" sizes=\"(max-width: 458px) 100vw, 458px\" \/><\/div>\n<\/div>\n<div class=\"block-ol \">\n<div class=\"block-item-header\"><span class=\"counter\"><span class=\"green\">2<\/span>\/4<\/span><\/div>\n<div class=\"text-container\">\n<p>\u4f7f\u7528\u573a\u666f\uff1aDHCP\u670d\u52a1\u5668&#8212;&#8212;SW&#8212;&#8211;PC\u3000\u3000\u8fd9\u4e2a\u662f\u6b63\u5e38\u7684\u5178\u578b\u7f51\u7edcPC\u901a\u8fc7DHCP\u83b7\u53d6IP\u5730\u5740\uff0c\u5982\u679c\u8fd9\u4e2a\u65f6\u5019SW\u4e0b\u9762\u518d\u6302\u63a5\u4e00\u4e2a\u8def\u7531\u5668\uff0c\u6216\u8005\u662f\u5176\u5b83\u7684DHCP\u670d\u52a1\u5668\u65f6\uff0cPC\u6709\u53ef\u80fd\u4f1a\u83b7\u53d6\u5230\u522b\u7684IP\u5730\u5740\u5177\u4f53\u5982\u4e0b\u56fe\uff1a<\/p>\n<\/div>\n<div class=\"exp-img-opt\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-1586\" src=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-1.jpg\" width=\"498\" height=\"192\" srcset=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-1.jpg 498w, https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-1-300x116.jpg 300w\" sizes=\"(max-width: 498px) 100vw, 498px\" \/><\/div>\n<aside class=\"ad-asp-1560\">\n<div class=\"ad-card\">\n<div>\n<div class=\"_73gawc6 fc-0000000034cf41d6-2239\">\n<div>\n<div class=\"_45qgtxq fc-0000000034cf41d6 _45qgtxq\" data-cegduid=\"\" 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class=\"_5c9d1st\"><span class=\"ec-tuiguang ecfc-tuiguang _7f9q8tm\">\u5e7f\u544a<\/span><\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/aside>\n<\/div>\n<div class=\"block-ol \">\n<div class=\"block-item-header\"><span class=\"counter\"><span class=\"green\">3<\/span>\/4<\/span><\/div>\n<div class=\"text-container\">\n<p>\u5f00\u542f\u4e86DHCP\u540e\uff0c\u5982\u4e0b\u56fe\uff0c\u4f1a\u751f\u6210\u4e00\u4e2a\u7ed1\u5b9a\u8868\uff0c\u5e76\u4e14\u53ea\u6709\u6307\u5b9a\u7684\u7aef\u53e3\u624d\u53ef\u4ee5\u53d1\u9001\u62a5\u6587\u8fdb\u884cDHCP\u7684\u5206\u914d \uff0c\u5176\u5b83\u7aef\u53e3\u7684\u62a5\u6587\u5168\u90e8\u4e22\u5f03\u3002<\/p>\n<\/div>\n<div class=\"exp-img-opt\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-1587\" src=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-2.jpg\" width=\"502\" height=\"285\" srcset=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-2.jpg 502w, https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-2-300x170.jpg 300w\" sizes=\"(max-width: 502px) 100vw, 502px\" \/><\/div>\n<aside class=\"ad-asp-1560\">\n<div class=\"ad-card\">\n<div>\n<div class=\"_73gawc6 fc-0000000034cf41d6-2239\">\n<div>\n<div class=\"_45qgtxq fc-0000000034cf41d6 _45qgtxq\" data-cegduid=\"\" 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href=\"https:\/\/m.baidu.com\/baidu.php?url=0f00000uEDLSpLgiCovfdmXEtmcM6d7PVczApJJtI-9SrvLn5gD1LbCAkhhK5VDeCdWhEzTXr1jrwkFa1Yt0XbawC_hjgufIGISFNHHPagadw2VXViubfDgeB7d-CY_Y8eO_Bh_UsrJRRjQn5-sa4YuvR_xQIz9IjxnSKtFmUViwI-VYqOFp8KEydC3etnzR8y_6L-Q5F83l9VcOny8JZRfZ-YjV.7Y_iHF8xnhA94wEYL_SNK-deQbfHgI3ynDgg6msw5I7AMHdeyPU5HoLUDe8PlI-vS1kl3vPrM-zI5HkzuPv1-3eorzEFb4XrHI8eQPMWdEmOBxEtxUwLOkcO9W3Ool5gqX1qxs3r_UZgykNfCmt5Zv3TMds45o6C_kgXNK-deQbmTMdWHGY3TMdCgkGuh9JstxonMgWkmX5zYlXgFYq5ZFbLUrgW8_e2thH-34Pve__vXrZFYqJIZ0lpejkSyZ1vmxgksSLl3x5kseS1jld3x5I9Let5Vv2XKMZztDps1f_NvUlqz6.U1Yz0ZDquA9WTaRznZP8Uvqspy4M0ZfqsoxHzTUL0A-V5HDdPW00Iybq0ZKGujYkrfKWpyfqPHb0mhbqn10k0AuY5Hc0TA6qn0KET1Yk0AFL5HR0UMfqn0K1XWY0ThIYmyTqn0K8IM0qna3snj0snj0sn0K-ThTqn0KYTh7buHYLrj0knjn0mhwGujYLrj7AfbRLnRcsnWDLrjfvfW0sfYn4wHwAfRc4wH7jrfKbmvPb5fK9TdqGuAnqTZnVmhwbX0KlTA3qQfKzIjY4n1c0TgKGujYs0Z7Wpyfqn0K9mWYsg100TZ0qnHDvPj01Pjf0Ugws5H00uAwETjYk0ZFJ5H00IZN15HDknWf1nHcdnWT4Pjm3PHbLnWmY0A7W5HD0TA3qn0Ksmgwxuhk9u1Ys0ANYpyfqQHD0mgPsmvnqn0KdTA-8mvnqn0KhmLNY5H00mywhUA7M5HD0IvuzUvYq0AFY5H00ThNkIjYkPWckPWc3nj6vnHDL0ZPGujYsnj0snj0snjnYmvmYnyfv0AqY5H00ULFsIjYsc10WwDuRc10Wnansc108nanscYwANanscYwAN0KopHYs0AdY5fKVm1Y0UyPxuMFEUHY0uA78IyF-gLK_my4GuZnq0A7bTgbq8lorJ_2LYtb0mywkIjYs0A-1mvsqn0KkUgfqn0K9u7q1ULNzmvRqnaPYpgw_uNqkIyNzXNqWUiPxgdqxUMnWIA-YUARWIAwVgvGWnHc0mLFW5HRYnH64&amp;us=newvui&amp;word=&amp;ck=0.0.0.0.0.0.0.0.0.0.0\"><span class=\"_5c9d1st\"><span class=\"ec-tuiguang ecfc-tuiguang _7f9q8tm\">\u5e7f\u544a<\/span><\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/aside>\n<\/div>\n<div class=\"block-ol block-ol-last \">\n<div class=\"block-item-header\"><span class=\"counter\"><span class=\"green\">4<\/span>\/4<\/span><\/div>\n<div class=\"text-container\">\n<p>\u5b9e\u9a8c\u62d3\u6251\uff1a<\/p>\n<p>#<\/p>\n<p>sysname PE1<\/p>\n<p>#<\/p>\n<p>dhcp enable\u00a0 \u00a0 \u00a0 \u00a0\/\/\u5f00\u542fDHCP\u670d\u52a1<\/p>\n<p>#<\/p>\n<p>dhcp snooping enable\u00a0 \u00a0 \u00a0 \/\/\u5f00\u542fDHCP snooping\u529f\u80fd<\/p>\n<p>#<\/p>\n<p>interface GigabitEthernet1\/0\/1<\/p>\n<p>dhcp snooping enable\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u5728\u63a5\u5165\u5c42\u7684\u6240\u6709\u7aef\u53e3\u5f00\u542f<\/p>\n<p>#<\/p>\n<p>interface GigabitEthernet1\/0\/2<\/p>\n<p>dhcp snooping enable\u00a0 \u00a0 \u00a0 \u00a0 \u00a0\/\/\u5728\u63a5\u5165\u5c42\u7684\u6240\u6709\u7aef\u53e3\u5f00\u542f<\/p>\n<p>#<\/p>\n<p>interface GigabitEthernet2\/0\/1<\/p>\n<p>dhcp snooping trusted\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \/\/\u5728\u63a5DHCP\u670d\u52a1\u5668\u6216\u8005\u4e2d\u7ee7\u7aef\u53e3\u5f00\u542f\u7aef\u53e3\u4fe1\u4efb\uff0c\u53ea\u6709\u8fd9\u4e2a\u7aef\u53e3\u5206\u914d\u8fc7\u6765\u7684IP\u6211\u624d\u4f1a\u63a5\u53d7\u3002<\/p>\n<p>#<\/p>\n<p>return<\/p>\n<p>\u8fd9\u91cc\u53ea\u505a\u6700\u4e3b\u8981\u6700\u91cd\u8981\u7684\u76f8\u5173\u914d\u7f6e\uff0c\u8fd8\u6709\u5176\u5b83\u7279\u522b\u4f18\u5316\u7684\u914d\u7f6e\u8bf7\u81ea\u884c\u53bb\u7814\u7a76\u3002<\/p>\n<\/div>\n<div class=\"exp-img-opt\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-1588\" src=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-3.jpg\" width=\"458\" height=\"244\" srcset=\"https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-3.jpg 458w, https:\/\/www.wjxy.net.cn\/wp-content\/uploads\/2021\/05\/\u534e\u4e3a\u4ea4\u6362\u673a\u914d\u7f6edhcp-snooping\u529f\u80fd\u5c4f\u853d\u975e\u6cd5dhcp-3-300x160.jpg 300w\" sizes=\"(max-width: 458px) 100vw, 458px\" \/><\/div>\n<\/div>\n<\/div>\n<\/header>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>DHCP Snooping\u662fDHCP\uff08Dynamic Host Configuration Protocol\uff09 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,22],"tags":[],"_links":{"self":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/1578"}],"collection":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1578"}],"version-history":[{"count":5,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/1578\/revisions"}],"predecessor-version":[{"id":1590,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/1578\/revisions\/1590"}],"wp:attachment":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}