{"id":2445,"date":"2010-09-28T15:16:12","date_gmt":"2010-09-28T07:16:12","guid":{"rendered":"http:\/\/www.killtest.com.tw\/?p=2445"},"modified":"2010-09-28T15:17:09","modified_gmt":"2010-09-28T07:17:09","slug":"dhcp","status":"publish","type":"post","link":"https:\/\/www.killtest.com.tw\/?p=2445","title":{"rendered":"\u914d\u7f6eDHCP\u4ee3\u7406"},"content":{"rendered":"

\u591a\u7db2\u6bb5\u7684DHCP\u69cb\u5efa<\/p>\n

DHCP\u5354\u8b70\u7528\u65bc\u5728\u5c40\u57df\u7db2\u74b0\u5883\u4e2d\u52d5\u614b\u5206\u914dIP\u5730\u5740\u3002
\n\u00a0\"\"<\/a>
\n\u7db2\u7d61\u4e2d\u7684\u5ba2\u6236\u6a5f(DHCP Client)\u901a\u904e\u5ee3\u64ad\u5411DHCP\u670d\u52d9\u5668(DHCP Server)\u767c\u51fa\u8acb\u6c42\uff0cDHCP\u670d\u52d9\u5668\u70ba\u5ba2\u6236\u6a5f\u5206\u914dIP\u5730\u5740\uff0c\u518d\u4ee5\u5ee3\u64ad\u7684\u65b9\u5f0f\u56de\u50b3\u7d66\u5ba2\u6236\u6a5f\uff0c\u5ba2\u6236\u6a5f\u7d81\u5b9a\u7372\u5f97\u7684IP\u5730\u5740\u5c31\u53ef\u4ee5\u958b\u59cb\u6b63\u5e38\u7684\u7db2\u7d61\u901a\u4fe1\u4e86\u3002
\n\u7531\u65bcDHCP\u670d\u52d9\u662f\u4ee5\u5ee3\u64ad\u65b9\u5f0f\u9032\u884c\u7684\uff0c\u9019\u4f7f\u5f97\u9019\u7a2e\u61c9\u7528\u53ea\u80fd\u9650\u5b9a\u5728\u58f9\u500b\u7db2\u6bb5\u4e4b\u4e2d\uff0c\u5c0d\u65bc\u591a\u7db2\u6bb5\u7684\u5c40\u57df\u7db2\u74b0\u5883\u5e38\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u6709\uff1a
\n1\u3001\u6bcf\u500b\u7db2\u6bb5\u8a2d\u7acb\u58f9\u500bDHCP Server\uff1a<\/p>\n

\"\"<\/a>
\n\u9019\u7a2e\u65b9\u6cd5\u53ef\u7531\u5404\u500b\u7db2\u6bb5\u81ea\u884c\u8a2d\u7acbDHCP\u670d\u52d9\u5668\uff0c\u70ba\u672c\u7db2\u6bb5\u7684\u5ba2\u6236\u6a5f\u63d0\u4f9bIP\u5730\u5740\u3002
\n2\u3001\u4f7f\u7528DHCP\u4ee3\u7406\uff1a<\/p>\n

\"\"<\/a>
\n\u5728\u9019\u7a2e\u65b9\u6cd5\u4e2d\uff0c\u53ea\u9700\u5728\u58f9\u500b\u7db2\u6bb5\u4e2d\u8a2d\u7acbDHCP\u670d\u52d9\u5668\uff0c\u628a3\u5c64\u4ea4\u63db\u6a5f\u914d\u7f6e\u70baDHCP\u4ee3\u7406(DHCP Relay Agent)\uff0c\u5b83\u53ef\u4ee5\u628a\u6536\u5230\u7684DHCP\u8acb\u6c42\u8f49\u767c\u7d66DHCP\u670d\u52d9\u5668\uff0c\u518d\u628aDHCP\u97ff\u61c9\u5831\u6587\u8f49\u767c\u7d66\u5ba2\u6236\u6a5f\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u5be6\u73feDHCP\u7684\u8de8\u7db2\u6bb5\u670d\u52d9\u3002
\n\ufffd
\n\u00a0DHCP\u4ee3\u7406\u7684\u914d\u7f6e
\n\ufffd
\n\u5728\u7f3a\u7701\u60c5\u6cc1\u4e0b\uff0c3\u5c64\u4ea4\u63db\u6a5f\u7684DHCP\u4ee3\u7406\u670d\u52d9\u662f\u95dc\u9589\u7684\uff0c\u914d\u7f6e\u6642\uff0c\u9700\u8981\u6253\u958b\u8a72\u670d\u52d9\u3002
\n1\u3001\u6253\u958bDHCP Relay Agent\uff1a
\n\u6a21\u5f0f\uff1a\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u3002
\n\u547d\u4ee4\uff1a
\nSwitch(config)#service dhcp
\nservice dhcp\u547d\u4ee4\u7528\u65bc\u6253\u958bDHCP Relay Agent\uff0c\u9019\u6642\uff0c\u4ea4\u63db\u6a5f\u5c31\u53ef\u4ee5\u9032\u884c\u4ee3\u7406\u5de5\u4f5c\u4e86\u3002
\n2\u3001\u914d\u7f6eDHCP Server\u7684IP\u5730\u5740\uff1a
\n\u5982\u679c\u6c92\u6709\u6307\u5b9aDHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\uff0c\u4ea4\u63db\u6a5f\u6703\u4ee5255.255.255.255\u70ba\u5730\u5740\u8f49\u767cDHCP\u8acb\u6c42\uff0c\u9019\u7a2e\u8f49\u767c\u662f\u5411\u6240\u6709\u63a5\u53e3\u8f49\u767c\uff0c\u6211\u5011\u4e0d\u63a8\u85a6\u9019\u7a2e\u505a\u6cd5\u3002\u89e3\u6c7a\u65b9\u6cd5\u5c31\u662f\u628aDHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\u544a\u77e5\u4ea4\u63db\u6a5f\u3002
\n\u6a21\u5f0f\uff1a\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u3002
\n\u547d\u4ee4\uff1a
\nSwitch(config)#ip helper-address IP-address
\n\u9019\u689d\u547d\u4ee4\u7528\u65bc\u6307\u5b9aDHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\u3002
\n3\u3001\u95dc\u9589DHCP\u4ee3\u7406\uff1a
\n\u5728\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u4e0b\uff0c\u53ef\u4ee5\u7528 no ip helper-address \u547d\u4ee4\u628aDHCP Server\u7684IP\u5730\u5740\u6062\u5fa9\u70ba\u9ed8\u8a8d\u503c\uff0c\u7528 no service dhcp \u547d\u4ee4\u53ef\u4ee5\u95dc\u9589\u4ea4\u63db\u6a5f\u7684DHCP Relay Agent\u529f\u80fd\u3002
\n4\u3001\u67e5\u770bDHCP Relay Agent\u72c0\u614b\uff1a
\n\u5728\u7279\u6b0a\u6a21\u5f0f\u4e0b\uff0c\u53ef\u4ee5\u7528 show ip management \u547d\u4ee4\u67e5\u770bDHCP Relay Agent\u72c0\u614b\u3002
\n\u914d\u7f6e\u8209\u4f8b\uff1a\u5df2\u77e5DHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\u70ba192.168.1.15\uff0c\u628a\u4ea4\u63db\u6a5f\u914d\u7f6e\u6210DHCP Relay Agent\u3002
\nSwitch>enable
\nSwitch#configure terminal
\nSwitch(config)#service dhcp
\nSwitch(config)#ip helper-address 192.168.1.15
\nSwitch(config)#end
\nSwitch#
\n\u8aaa\u660e\uff1a\u60f3\u8981\u5be6\u73fe\u591a\u7db2\u6bb5\u7684DHCP\u670d\u52d9\u529f\u80fd\uff0c\u9664\u4e86\u628a\u4ea4\u63db\u6a5f\u914d\u7f6e\u70baDHCP Relay Agent\u5916\uff0c\u9084\u9700\u8981\u628aDHCP\u670d\u52d9\u5668\u914d\u7f6e\u6210\u53ef\u70ba\u591a\u7db2\u6bb5\u63d0\u4f9bIP\u5730\u5740\u7684\u5de5\u4f5c\u65b9\u5f0f\uff0c\u76f8\u95dc\u5167\u5bb9\u8acb\u53c3\u8003DHCP\u670d\u52d9\u5668\u7684\u914d\u7f6e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u591a\u7db2\u6bb5\u7684DHCP\u69cb\u5efa DHCP\u5354\u8b70\u7528\u65bc\u5728\u5c40\u57df\u7db2\u74b0\u5883\u4e2d\u52d5\u614b\u5206\u914dIP\u5730\u5740\u3002 \u00a0 \u7db2\u7d61\u4e2d\u7684\u5ba2\u6236\u6a5f(DHCP Client)\u901a\u904e\u5ee3\u64ad\u5411DHCP\u670d\u52d9\u5668(DHCP Server)\u767c\u51fa\u8acb\u6c42\uff0cDHCP\u670d\u52d9\u5668\u70ba\u5ba2\u6236\u6a5f\u5206\u914dIP\u5730\u5740\uff0c\u518d\u4ee5\u5ee3\u64ad\u7684\u65b9\u5f0f\u56de\u50b3\u7d66\u5ba2\u6236\u6a5f\uff0c\u5ba2\u6236\u6a5f\u7d81\u5b9a\u7372\u5f97\u7684IP\u5730\u5740\u5c31\u53ef\u4ee5\u958b\u59cb\u6b63\u5e38\u7684\u7db2\u7d61\u901a\u4fe1\u4e86\u3002 \u7531\u65bcDHCP\u670d\u52d9\u662f\u4ee5\u5ee3\u64ad\u65b9\u5f0f\u9032\u884c\u7684\uff0c\u9019\u4f7f\u5f97\u9019\u7a2e\u61c9\u7528\u53ea\u80fd\u9650\u5b9a\u5728\u58f9\u500b\u7db2\u6bb5\u4e4b\u4e2d\uff0c\u5c0d\u65bc\u591a\u7db2\u6bb5\u7684\u5c40\u57df\u7db2\u74b0\u5883\u5e38\u7528\u7684\u89e3\u6c7a\u65b9\u6848\u6709\uff1a 1\u3001\u6bcf\u500b\u7db2\u6bb5\u8a2d\u7acb\u58f9\u500bDHCP Server\uff1a \u9019\u7a2e\u65b9\u6cd5\u53ef\u7531\u5404\u500b\u7db2\u6bb5\u81ea\u884c\u8a2d\u7acbDHCP\u670d\u52d9\u5668\uff0c\u70ba\u672c\u7db2\u6bb5\u7684\u5ba2\u6236\u6a5f\u63d0\u4f9bIP\u5730\u5740\u3002 2\u3001\u4f7f\u7528DHCP\u4ee3\u7406\uff1a \u5728\u9019\u7a2e\u65b9\u6cd5\u4e2d\uff0c\u53ea\u9700\u5728\u58f9\u500b\u7db2\u6bb5\u4e2d\u8a2d\u7acbDHCP\u670d\u52d9\u5668\uff0c\u628a3\u5c64\u4ea4\u63db\u6a5f\u914d\u7f6e\u70baDHCP\u4ee3\u7406(DHCP Relay Agent)\uff0c\u5b83\u53ef\u4ee5\u628a\u6536\u5230\u7684DHCP\u8acb\u6c42\u8f49\u767c\u7d66DHCP\u670d\u52d9\u5668\uff0c\u518d\u628aDHCP\u97ff\u61c9\u5831\u6587\u8f49\u767c\u7d66\u5ba2\u6236\u6a5f\uff0c\u9019\u6a23\u5c31\u53ef\u4ee5\u5be6\u73feDHCP\u7684\u8de8\u7db2\u6bb5\u670d\u52d9\u3002 \ufffd \u00a0DHCP\u4ee3\u7406\u7684\u914d\u7f6e \ufffd \u5728\u7f3a\u7701\u60c5\u6cc1\u4e0b\uff0c3\u5c64\u4ea4\u63db\u6a5f\u7684DHCP\u4ee3\u7406\u670d\u52d9\u662f\u95dc\u9589\u7684\uff0c\u914d\u7f6e\u6642\uff0c\u9700\u8981\u6253\u958b\u8a72\u670d\u52d9\u3002 1\u3001\u6253\u958bDHCP Relay Agent\uff1a \u6a21\u5f0f\uff1a\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u3002 \u547d\u4ee4\uff1a Switch(config)#service dhcp service dhcp\u547d\u4ee4\u7528\u65bc\u6253\u958bDHCP Relay Agent\uff0c\u9019\u6642\uff0c\u4ea4\u63db\u6a5f\u5c31\u53ef\u4ee5\u9032\u884c\u4ee3\u7406\u5de5\u4f5c\u4e86\u3002 2\u3001\u914d\u7f6eDHCP Server\u7684IP\u5730\u5740\uff1a \u5982\u679c\u6c92\u6709\u6307\u5b9aDHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\uff0c\u4ea4\u63db\u6a5f\u6703\u4ee5255.255.255.255\u70ba\u5730\u5740\u8f49\u767cDHCP\u8acb\u6c42\uff0c\u9019\u7a2e\u8f49\u767c\u662f\u5411\u6240\u6709\u63a5\u53e3\u8f49\u767c\uff0c\u6211\u5011\u4e0d\u63a8\u85a6\u9019\u7a2e\u505a\u6cd5\u3002\u89e3\u6c7a\u65b9\u6cd5\u5c31\u662f\u628aDHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\u544a\u77e5\u4ea4\u63db\u6a5f\u3002 \u6a21\u5f0f\uff1a\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u3002 \u547d\u4ee4\uff1a Switch(config)#ip helper-address IP-address \u9019\u689d\u547d\u4ee4\u7528\u65bc\u6307\u5b9aDHCP\u670d\u52d9\u5668\u7684IP\u5730\u5740\u3002 3\u3001\u95dc\u9589DHCP\u4ee3\u7406\uff1a \u5728\u5168\u5c40\u914d\u7f6e\u6a21\u5f0f\u4e0b\uff0c\u53ef\u4ee5\u7528 no ip helper-address \u547d\u4ee4\u628aDHCP Server\u7684IP\u5730\u5740\u6062\u5fa9\u70ba\u9ed8\u8a8d\u503c\uff0c\u7528 no service dhcp \u547d\u4ee4\u53ef\u4ee5\u95dc\u9589\u4ea4\u63db\u6a5f\u7684DHCP Relay Agent\u529f\u80fd\u3002 4\u3001\u67e5\u770bDHCP Relay Agent\u72c0\u614b\uff1a \u5728\u7279\u6b0a\u6a21\u5f0f\u4e0b\uff0c\u53ef\u4ee5\u7528 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,703],"tags":[3155,3281],"class_list":["post-2445","post","type-post","status-publish","format-standard","hentry","category-cisco","category-dhcp","tag-cisco","tag-dhcp"],"_links":{"self":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2445","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2445"}],"version-history":[{"count":2,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2445\/revisions"}],"predecessor-version":[{"id":2450,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=\/wp\/v2\/posts\/2445\/revisions\/2450"}],"wp:attachment":[{"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2445"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2445"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.killtest.com.tw\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2445"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}