{"id":285,"date":"2022-10-30T17:48:05","date_gmt":"2022-10-30T09:48:05","guid":{"rendered":"https:\/\/blog.taiyang.space\/?p=285"},"modified":"2022-10-30T17:48:06","modified_gmt":"2022-10-30T09:48:06","slug":"dhcp%e7%ae%80%e8%bf%b0","status":"publish","type":"post","link":"https:\/\/blog.taiyang.space\/?p=285","title":{"rendered":"DHCP\u7b80\u8ff0"},"content":{"rendered":"<h2>\u4ec0\u4e48\u662fDHCP<\/h2>\n<p>\u52a8\u6001\u4e3b\u673a\u914d\u7f6e\u534f\u8baeDHCP\uff08Dynamic Host Configuration Protocol\uff09\u662f\u4e00\u79cd\u7f51\u7edc\u7ba1\u7406\u534f\u8bae\uff0c\u7528\u4e8e\u96c6\u4e2d\u5bf9\u7528\u6237IP\u5730\u5740\u8fdb\u884c\u52a8\u6001\u7ba1\u7406\u548c\u914d\u7f6e\u3002<br \/>\nDHCP\u4e8e1993\u5e7410\u6708\u6210\u4e3a\u6807\u51c6\u534f\u8bae\uff0c\u5176\u524d\u8eab\u662fBOOTP\u534f\u8bae\u3002DHCP\u534f\u8bae\u7531RFC 2131\u5b9a\u4e49\uff0c\u91c7\u7528\u5ba2\u6237\u7aef\/\u670d\u52a1\u5668\u901a\u4fe1\u6a21\u5f0f\uff0c\u7531\u5ba2\u6237\u7aef\uff08DHCP Client\uff09\u5411\u670d\u52a1\u5668\uff08DHCP Server\uff09\u63d0\u51fa\u914d\u7f6e\u7533\u8bf7\uff0cDHCP Server\u4e3a\u7f51\u7edc\u4e0a\u7684\u6bcf\u4e2a\u8bbe\u5907\u52a8\u6001\u5206\u914dIP\u5730\u5740\u3001\u5b50\u7f51\u63a9\u7801\u3001\u9ed8\u8ba4\u7f51\u5173\u5730\u5740\uff0c\u57df\u540d\u670d\u52a1\u5668\uff08DNS\uff09\u5730\u5740\u548c\u5176\u4ed6\u76f8\u5173\u914d\u7f6e\u53c2\u6570\uff0c\u4ee5\u4fbf\u53ef\u4ee5\u4e0e\u5176\u4ed6IP\u7f51\u7edc\u901a\u4fe1\u3002<\/p>\n<p>&nbsp;<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u8981\u4f7f\u7528DHCP<\/h2>\n<p>\u5728IP\u7f51\u7edc\u4e2d\uff0c\u6bcf\u4e2a\u8fde\u63a5Internet\u7684\u8bbe\u5907\u90fd\u9700\u8981\u5206\u914d\u552f\u4e00\u7684IP\u5730\u5740\u3002DHCP\u4f7f\u7f51\u7edc\u7ba1\u7406\u5458\u80fd\u4ece\u4e2d\u5fc3\u7ed3\u70b9\u76d1\u63a7\u548c\u5206\u914dIP\u5730\u5740\u3002\u5f53\u67d0\u53f0\u8ba1\u7b97\u673a\u79fb\u5230\u7f51\u7edc\u4e2d\u7684\u5176\u5b83\u4f4d\u7f6e\u65f6\uff0c\u80fd\u81ea\u52a8\u6536\u5230\u65b0\u7684IP\u5730\u5740\u3002DHCP\u5b9e\u73b0\u7684\u81ea\u52a8\u5316\u5206\u914dIP\u5730\u5740\u4e0d\u4ec5\u964d\u4f4e\u4e86\u914d\u7f6e\u548c\u90e8\u7f72\u8bbe\u5907\u7684\u65f6\u95f4\uff0c\u540c\u65f6\u4e5f\u964d\u4f4e\u4e86\u53d1\u751f\u914d\u7f6e\u9519\u8bef\u7684\u53ef\u80fd\u6027\u3002\u53e6\u5916DHCP\u670d\u52a1\u5668\u53ef\u4ee5\u7ba1\u7406\u591a\u4e2a\u7f51\u6bb5\u7684\u914d\u7f6e\u4fe1\u606f\uff0c\u5f53\u67d0\u4e2a\u7f51\u6bb5\u7684\u914d\u7f6e\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u7ba1\u7406\u5458\u53ea\u9700\u8981\u66f4\u65b0DHCP\u670d\u52a1\u5668\u4e0a\u7684\u76f8\u5173\u914d\u7f6e\u5373\u53ef\uff0c\u5b9e\u73b0\u4e86\u96c6\u4e2d\u5316\u7ba1\u7406\u3002<\/p>\n<p>\u603b\u4f53\u6765\u770b\uff0cDHCP\u5e26\u6765\u4e86\u5982\u4e0b\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li>\u51c6\u786e\u7684IP\u914d\u7f6e\uff1aIP\u5730\u5740\u914d\u7f6e\u53c2\u6570\u5fc5\u987b\u51c6\u786e\uff0c\u5e76\u4e14\u5728\u5904\u7406\u201c 192.168.XXX.XXX\u201d\u4e4b\u7c7b\u7684\u8f93\u5165\u65f6\uff0c\u5f88\u5bb9\u6613\u51fa\u9519\u3002\u53e6\u5916\u5370\u5237\u9519\u8bef\u901a\u5e38\u5f88\u96be\u89e3\u51b3\uff0c\u4f7f\u7528DHCP\u670d\u52a1\u5668\u53ef\u4ee5\u6700\u5927\u7a0b\u5ea6\u5730\u964d\u4f4e\u8fd9\u79cd\u98ce\u9669\u3002<\/li>\n<li>\u51cf\u5c11IP\u5730\u5740\u51b2\u7a81\uff1a\u6bcf\u4e2a\u8fde\u63a5\u7684\u8bbe\u5907\u90fd\u5fc5\u987b\u6709\u4e00\u4e2aIP\u5730\u5740\u3002\u4f46\u662f\uff0c\u6bcf\u4e2a\u5730\u5740\u53ea\u80fd\u4f7f\u7528\u4e00\u6b21\uff0c\u91cd\u590d\u7684\u5730\u5740\u5c06\u5bfc\u81f4\u65e0\u6cd5\u8fde\u63a5\u4e00\u4e2a\u6216\u4e24\u4e2a\u8bbe\u5907\u7684\u51b2\u7a81\u3002\u5f53\u624b\u52a8\u5206\u914d\u5730\u5740\u65f6\uff0c\u5c24\u5176\u662f\u5728\u5b58\u5728\u5927\u91cf\u4ec5\u5b9a\u671f\u8fde\u63a5\u7684\u7aef\u70b9\uff08\u4f8b\u5982\u79fb\u52a8\u8bbe\u5907\uff09\u65f6\uff0c\u53ef\u80fd\u4f1a\u53d1\u751f\u8fd9\u79cd\u60c5\u51b5\u3002DHCP\u7684\u4f7f\u7528\u53ef\u786e\u4fdd\u6bcf\u4e2a\u5730\u5740\u4ec5\u4f7f\u7528\u4e00\u6b21\u3002<\/li>\n<li>IP\u5730\u5740\u7ba1\u7406\u7684\u81ea\u52a8\u5316\uff1a\u5982\u679c\u6ca1\u6709DHCP\uff0c\u7f51\u7edc\u7ba1\u7406\u5458\u5c06\u9700\u8981\u624b\u52a8\u5206\u914d\u548c\u64a4\u6d88\u5730\u5740\u3002\u8ddf\u8e2a\u54ea\u4e2a\u8bbe\u5907\u5177\u6709\u4ec0\u4e48\u5730\u5740\u53ef\u80fd\u662f\u5f92\u52b3\u7684\uff0c\u56e0\u4e3a\u51e0\u4e4e\u65e0\u6cd5\u7406\u89e3\u8bbe\u5907\u4f55\u65f6\u9700\u8981\u8bbf\u95ee\u7f51\u7edc\u4ee5\u53ca\u4f55\u65f6\u9700\u8981\u79bb\u5f00\u7f51\u7edc\u3002DHCP\u5141\u8bb8\u5c06\u5176\u81ea\u52a8\u5316\u548c\u96c6\u4e2d\u5316\uff0c\u56e0\u6b64\u7f51\u7edc\u4e13\u4e1a\u4eba\u5458\u53ef\u4ee5\u4ece\u4e00\u4e2a\u4f4d\u7f6e\u7ba1\u7406\u6240\u6709\u4f4d\u7f6e\u3002<\/li>\n<li>\u9ad8\u6548\u7684\u53d8\u66f4\u7ba1\u7406\uff1aDHCP\u7684\u4f7f\u7528\u4f7f\u66f4\u6539\u5730\u5740\uff0c\u8303\u56f4\u6216\u7aef\u70b9\u53d8\u5f97\u975e\u5e38\u7b80\u5355\u3002\u4f8b\u5982\uff0c\u7ec4\u7ec7\u53ef\u80fd\u5e0c\u671b\u5c06\u5176IP\u5bfb\u5740\u65b9\u6848\u4ece\u4e00\u4e2a\u8303\u56f4\u66f4\u6539\u4e3a\u53e6\u4e00\u4e2a\u8303\u56f4\u3002DHCP\u670d\u52a1\u5668\u914d\u7f6e\u6709\u65b0\u4fe1\u606f\uff0c\u8be5\u4fe1\u606f\u5c06\u4f20\u64ad\u5230\u65b0\u7aef\u70b9\u3002\u540c\u6837\uff0c\u5982\u679c\u5347\u7ea7\u5e76\u66f4\u6362\u4e86\u7f51\u7edc\u8bbe\u5907\uff0c\u5219\u4e0d\u9700\u8981\u7f51\u7edc\u914d\u7f6e\u3002<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>DHCP\u662f\u600e\u4e48\u5de5\u4f5c\u7684<\/h2>\n<p>DHCP\u534f\u8bae\u91c7\u7528UDP\u4f5c\u4e3a\u4f20\u8f93\u534f\u8bae\uff0cDHCP\u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u6d88\u606f\u5230DHCP\u670d\u52a1\u5668\u768468\u53f7\u7aef\u53e3\uff0cDHCP\u670d\u52a1\u5668\u56de\u5e94\u5e94\u7b54\u6d88\u606f\u7ed9DHCP\u5ba2\u6237\u7aef\u768467\u53f7\u7aef\u53e3\u3002<\/p>\n<p>\u53ea\u6709\u8ddfDHCP\u5ba2\u6237\u7aef\u5728\u540c\u4e00\u4e2a\u7f51\u6bb5\u7684DHCP\u670d\u52a1\u5668\u624d\u80fd\u6536\u5230DHCP\u5ba2\u6237\u7aef\u5e7f\u64ad\u7684DHCP DISCOVER\u62a5\u6587\u3002\u5f53DHCP\u5ba2\u6237\u7aef\u4e0eDHCP\u670d\u52a1\u5668\u4e0d\u5728\u540c\u4e00\u4e2a\u7f51\u6bb5\u65f6\uff0c\u5fc5\u987b\u90e8\u7f72DHCP\u4e2d\u7ee7\u6765\u8f6c\u53d1DHCP\u5ba2\u6237\u7aef\u548cDHCP\u670d\u52a1\u5668\u4e4b\u95f4\u7684DHCP\u62a5\u6587\u3002\u5728DHCP\u5ba2\u6237\u7aef\u770b\u6765\uff0cDHCP\u4e2d\u7ee7\u5c31\u50cfDHCP\u670d\u52a1\u5668\uff1b\u5728DHCP\u670d\u52a1\u5668\u770b\u6765\uff0cDHCP\u4e2d\u7ee7\u5c31\u50cfDHCP\u5ba2\u6237\u7aef\u3002<\/p>\n<h3>\u65e0\u4e2d\u7ee7\u573a\u666f\u65f6DHCP\u5ba2\u6237\u7aef\u9996\u6b21\u63a5\u5165\u7f51\u7edc\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5728\u6ca1\u6709\u90e8\u7f72DHCP\u4e2d\u7ee7\u7684\u573a\u666f\u4e0b\uff0c\u9996\u6b21\u63a5\u5165\u7f51\u7edcDHCP\u5ba2\u6237\u7aef\u4e0eDHCP\u670d\u52a1\u5668\u7684\u62a5\u6587\u4ea4\u4e92\u8fc7\u7a0b\uff0c\u8be5\u8fc7\u7a0b\u79f0\u4e3aDHCP\u62a5\u6587\u56db\u6b65\u4ea4\u4e92\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301743516.png\" referrerpolicy=\"no-referrer\" alt=\"1667116157104-fa67c070-4533-4c3a-9488-4dba8e1b1c78\"><\/p>\n<h4>\u7b2c\u4e00\u6b65\uff1a\u53d1\u73b0\u9636\u6bb5<\/h4>\n<p>\u9996\u6b21\u63a5\u5165\u7f51\u7edc\u7684DHCP\u5ba2\u6237\u7aef\u4e0d\u77e5\u9053DHCP\u670d\u52a1\u5668\u7684IP\u5730\u5740\uff0c\u4e3a\u4e86\u5b66\u4e60\u5230DHCP\u670d\u52a1\u5668\u7684IP\u5730\u5740\uff0cDHCP\u5ba2\u6237\u7aef\u4ee5\u5e7f\u64ad\u65b9\u5f0f\u53d1\u9001DHCP DISCOVER\u62a5\u6587\uff08\u76ee\u7684IP\u5730\u5740\u4e3a255.255.255.255\uff09\u7ed9\u540c\u4e00\u7f51\u6bb5\u5185\u7684\u6240\u6709\u8bbe\u5907\uff08\u5305\u62ecDHCP\u670d\u52a1\u5668\u6216\u4e2d\u7ee7\uff09\u3002DHCP DISCOVER\u62a5\u6587\u4e2d\u643a\u5e26\u4e86\u5ba2\u6237\u7aef\u7684MAC\u5730\u5740\uff08chaddr\u5b57\u6bb5\uff09\u3001\u9700\u8981\u8bf7\u6c42\u7684\u53c2\u6570\u5217\u8868\u9009\u9879\uff08Option55\uff09\u3001\u5e7f\u64ad\u6807\u5fd7\u4f4d\uff08flags\u5b57\u6bb5\uff09\u7b49\u4fe1\u606f\u3002<\/p>\n<h4>\u7b2c\u4e8c\u6b65\uff1a\u63d0\u4f9b\u9636\u6bb5<\/h4>\n<p>\u4e0eDHCP\u5ba2\u6237\u7aef\u4f4d\u4e8e\u540c\u4e00\u7f51\u6bb5\u7684DHCP\u670d\u52a1\u5668\u90fd\u4f1a\u63a5\u6536\u5230DHCP DISCOVER\u62a5\u6587\uff0cDHCP\u670d\u52a1\u5668\u9009\u62e9\u8ddf\u63a5\u6536DHCP DISCOVER\u62a5\u6587\u63a5\u53e3\u7684IP\u5730\u5740\u5904\u4e8e\u540c\u4e00\u7f51\u6bb5\u7684\u5730\u5740\u6c60\uff0c\u5e76\u4e14\u4ece\u4e2d\u9009\u62e9\u4e00\u4e2a\u53ef\u7528\u7684IP\u5730\u5740\uff0c\u7136\u540e\u901a\u8fc7DHCP OFFER\u62a5\u6587\u53d1\u9001\u7ed9DHCP\u5ba2\u6237\u7aef\u3002<\/p>\n<p>\u901a\u5e38\uff0cDHCP\u670d\u52a1\u5668\u7684\u5730\u5740\u6c60\u4e2d\u4f1a\u6307\u5b9aIP\u5730\u5740\u7684\u79df\u671f\uff0c\u5982\u679cDHCP\u5ba2\u6237\u7aef\u53d1\u9001\u7684DHCP DISCOVER\u62a5\u6587\u4e2d\u643a\u5e26\u4e86\u671f\u671b\u79df\u671f\uff0c\u670d\u52a1\u5668\u4f1a\u5c06\u5ba2\u6237\u7aef\u8bf7\u6c42\u7684\u671f\u671b\u79df\u671f\u4e0e\u5176\u6307\u5b9a\u7684\u79df\u671f\u8fdb\u884c\u6bd4\u8f83\uff0c\u9009\u62e9\u5176\u4e2d\u65f6\u95f4\u8f83\u77ed\u7684\u79df\u671f\u5206\u914d\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n<p>DHCP\u670d\u52a1\u5668\u5728\u5730\u5740\u6c60\u4e2d\u4e3a\u5ba2\u6237\u7aef\u5206\u914dIP\u5730\u5740\u7684\u987a\u5e8f\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>DHCP\u670d\u52a1\u5668\u4e0a\u5df2\u914d\u7f6e\u7684\u4e0e\u5ba2\u6237\u7aefMAC\u5730\u5740\u9759\u6001\u7ed1\u5b9a\u7684IP\u5730\u5740\u3002<\/li>\n<li>\u5ba2\u6237\u7aef\u53d1\u9001\u7684DHCP DISCOVER\u62a5\u6587\u4e2dOption50\uff08\u8bf7\u6c42IP\u5730\u5740\u9009\u9879\uff09\u6307\u5b9a\u7684\u5730\u5740\u3002<\/li>\n<li>\u5730\u5740\u6c60\u5185\u67e5\u627e\u201cExpired\u201d\u72b6\u6001\u7684IP\u5730\u5740\uff0c\u5373\u66fe\u7ecf\u5206\u914d\u7ed9\u5ba2\u6237\u7aef\u7684\u8d85\u8fc7\u79df\u671f\u7684IP\u5730\u5740\u3002<\/li>\n<li>\u5728\u5730\u5740\u6c60\u5185\u968f\u673a\u67e5\u627e\u4e00\u4e2a\u201cIdle\u201d\u72b6\u6001\u7684IP\u5730\u5740\u3002<\/li>\n<li>\u5982\u679c\u672a\u627e\u5230\u53ef\u4f9b\u5206\u914d\u7684IP\u5730\u5740\uff0c\u5219\u5730\u5740\u6c60\u4f9d\u6b21\u81ea\u52a8\u56de\u6536\u8d85\u8fc7\u79df\u671f\u7684\uff08\u201cExpired\u201d\u72b6\u6001\uff09\u548c\u5904\u4e8e\u51b2\u7a81\u72b6\u6001\uff08\u201cConflict\u201d\u72b6\u6001\uff09\u7684IP\u5730\u5740\u3002\u56de\u6536\u540e\u5982\u679c\u627e\u5230\u53ef\u7528\u7684IP\u5730\u5740\uff0c\u5219\u8fdb\u884c\u5206\u914d\uff1b\u5426\u5219\uff0cDHCP\u5ba2\u6237\u7aef\u7b49\u5f85\u5e94\u7b54\u8d85\u65f6\u540e\uff0c\u91cd\u65b0\u53d1\u9001DHCP DISCOVER\u62a5\u6587\u6765\u7533\u8bf7IP\u5730\u5740\u3002<\/li>\n<\/ol>\n<p>\u8bbe\u5907\u652f\u6301\u5728\u5730\u5740\u6c60\u4e2d\u6392\u9664\u67d0\u4e9b\u4e0d\u80fd\u901a\u8fc7DHCP\u673a\u5236\u8fdb\u884c\u5206\u914d\u7684IP\u5730\u5740\u3002\u4f8b\u5982\uff0c\u5ba2\u6237\u7aef\u6240\u5728\u7f51\u6bb5\u5df2\u7ecf\u624b\u5de5\u914d\u7f6e\u4e86\u5730\u5740\u4e3a192.168.1.100\/24\u7684DNS\u670d\u52a1\u5668\uff0cDHCP\u670d\u52a1\u5668\u4e0a\u914d\u7f6e\u7684\u7f51\u6bb5\u4e3a192.168.1.0\/24\u7684\u5730\u5740\u6c60\u4e2d\u9700\u8981\u5c06192.168.1.100\u7684IP\u5730\u5740\u6392\u9664\uff0c\u4e0d\u80fd\u901a\u8fc7DHCP\u5206\u914d\u6b64\u5730\u5740\uff0c\u5426\u5219\uff0c\u4f1a\u9020\u6210\u5730\u5740\u51b2\u7a81\u3002<\/p>\n<p>\u4e3a\u4e86\u9632\u6b62\u5206\u914d\u51fa\u53bb\u7684IP\u5730\u5740\u8ddf\u7f51\u7edc\u4e2d\u5176\u4ed6\u5ba2\u6237\u7aef\u7684IP\u5730\u5740\u51b2\u7a81\uff0cDHCP\u670d\u52a1\u5668\u5728\u53d1\u9001DHCP OFFER\u62a5\u6587\u524d\u901a\u8fc7\u53d1\u9001\u6e90\u5730\u5740\u4e3aDHCP\u670d\u52a1\u5668IP\u5730\u5740\u3001\u76ee\u7684\u5730\u5740\u4e3a\u9884\u5206\u914d\u51fa\u53bbIP\u5730\u5740\u7684ICMP ECHO REQUEST\u62a5\u6587\u5bf9\u5206\u914d\u7684IP\u5730\u5740\u8fdb\u884c\u5730\u5740\u51b2\u7a81\u63a2\u6d4b\u3002\u5982\u679c\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u5185\u6ca1\u6709\u6536\u5230\u5e94\u7b54\u62a5\u6587\uff0c\u8868\u793a\u7f51\u7edc\u4e2d\u6ca1\u6709\u5ba2\u6237\u7aef\u4f7f\u7528\u8fd9\u4e2aIP\u5730\u5740\uff0c\u53ef\u4ee5\u5206\u914d\u7ed9\u5ba2\u6237\u7aef\uff1b\u5982\u679c\u6307\u5b9a\u65f6\u95f4\u5185\u6536\u5230\u5e94\u7b54\u62a5\u6587\uff0c\u8868\u793a\u7f51\u7edc\u4e2d\u5df2\u7ecf\u5b58\u5728\u4f7f\u7528\u6b64IP\u5730\u5740\u7684\u5ba2\u6237\u7aef\uff0c\u5219\u628a\u6b64\u5730\u5740\u5217\u4e3a\u51b2\u7a81\u5730\u5740\uff0c\u7136\u540e\u7b49\u5f85\u91cd\u65b0\u63a5\u6536\u5230DHCP DISCOVER\u62a5\u6587\u540e\u6309\u7167\u524d\u9762\u4ecb\u7ecd\u7684\u9009\u62e9IP\u5730\u5740\u7684\u4f18\u5148\u987a\u5e8f\u91cd\u65b0\u9009\u62e9\u53ef\u7528\u7684IP\u5730\u5740\u3002<\/p>\n<p>\u6b64\u9636\u6bb5DHCP\u670d\u52a1\u5668\u5206\u914d\u7ed9\u5ba2\u6237\u7aef\u7684IP\u5730\u5740\u4e0d\u4e00\u5b9a\u662f\u6700\u7ec8\u786e\u5b9a\u4f7f\u7528\u7684IP\u5730\u5740\uff0c\u56e0\u4e3aDHCP OFFER\u62a5\u6587\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u7b49\u5f8516\u79d2\u540e\u5982\u679c\u6ca1\u6709\u6536\u5230\u5ba2\u6237\u7aef\u7684\u54cd\u5e94\uff0c\u6b64\u5730\u5740\u5c31\u53ef\u4ee5\u7ee7\u7eed\u5206\u914d\u7ed9\u5176\u4ed6\u5ba2\u6237\u7aef\u3002\u901a\u8fc7\u4e0b\u9762\u7684\u9009\u62e9\u9636\u6bb5\u548c\u786e\u8ba4\u9636\u6bb5\u540e\u624d\u80fd\u6700\u7ec8\u786e\u5b9a\u5ba2\u6237\u7aef\u53ef\u4ee5\u4f7f\u7528\u7684IP\u5730\u5740\u3002<\/p>\n<h4>\u7b2c\u4e09\u6b65\uff1a\u9009\u62e9\u9636\u6bb5<\/h4>\n<p>\u5982\u679c\u6709\u591a\u4e2aDHCP\u670d\u52a1\u5668\u5411DHCP\u5ba2\u6237\u7aef\u56de\u5e94DHCP OFFER\u62a5\u6587\uff0c\u5219DHCP\u5ba2\u6237\u7aef\u4e00\u822c\u53ea\u63a5\u6536\u7b2c\u4e00\u4e2a\u6536\u5230\u7684DHCP OFFER\u62a5\u6587\uff0c\u7136\u540e\u4ee5\u5e7f\u64ad\u65b9\u5f0f\u53d1\u9001DHCP REQUEST\u62a5\u6587\uff0c\u8be5\u62a5\u6587\u4e2d\u5305\u542b\u5ba2\u6237\u7aef\u60f3\u9009\u62e9\u7684DHCP\u670d\u52a1\u5668\u6807\u8bc6\u7b26\uff08\u5373Option54\uff09\u548c\u5ba2\u6237\u7aefIP\u5730\u5740\uff08\u5373Option50\uff0c\u586b\u5145\u4e86\u63a5\u6536\u7684DHCP OFFER\u62a5\u6587\u4e2dyiaddr\u5b57\u6bb5\u7684IP\u5730\u5740\uff09\u3002<\/p>\n<p>DHCP\u5ba2\u6237\u7aef\u5e7f\u64ad\u53d1\u9001DHCP REQUEST\u62a5\u6587\u901a\u77e5\u6240\u6709\u7684DHCP\u670d\u52a1\u5668\uff0c\u5b83\u5c06\u9009\u62e9\u67d0\u4e2aDHCP\u670d\u52a1\u5668\u63d0\u4f9b\u7684IP\u5730\u5740\uff0c\u5176\u4ed6DHCP\u670d\u52a1\u5668\u53ef\u4ee5\u91cd\u65b0\u5c06\u66fe\u7ecf\u5206\u914d\u7ed9\u5ba2\u6237\u7aef\u7684IP\u5730\u5740\u5206\u914d\u7ed9\u5176\u4ed6\u5ba2\u6237\u7aef\u3002<\/p>\n<h4>\u7b2c\u56db\u6b65\uff1a\u786e\u8ba4\u9636\u6bb5<\/h4>\n<p>\u5f53DHCP\u670d\u52a1\u5668\u6536\u5230DHCP\u5ba2\u6237\u7aef\u53d1\u9001\u7684DHCP REQUEST\u62a5\u6587\u540e\uff0cDHCP\u670d\u52a1\u5668\u56de\u5e94DHCP ACK\u62a5\u6587\uff0c\u8868\u793aDHCP REQUEST\u62a5\u6587\u4e2d\u8bf7\u6c42\u7684IP\u5730\u5740\uff08Option50\u586b\u5145\u7684\uff09\u5206\u914d\u7ed9\u5ba2\u6237\u7aef\u4f7f\u7528\u3002<\/p>\n<p>DHCP\u5ba2\u6237\u7aef\u6536\u5230DHCP ACK\u62a5\u6587\uff0c\u4f1a\u5e7f\u64ad\u53d1\u9001\u514d\u8d39ARP\u62a5\u6587\uff0c\u63a2\u6d4b\u672c\u7f51\u6bb5\u662f\u5426\u6709\u5176\u4ed6\u7ec8\u7aef\u4f7f\u7528\u670d\u52a1\u5668\u5206\u914d\u7684IP\u5730\u5740\uff0c\u5982\u679c\u5728\u6307\u5b9a\u65f6\u95f4\u5185\u6ca1\u6709\u6536\u5230\u56de\u5e94\uff0c\u8868\u793a\u5ba2\u6237\u7aef\u53ef\u4ee5\u4f7f\u7528\u6b64\u5730\u5740\u3002\u5982\u679c\u6536\u5230\u4e86\u56de\u5e94\uff0c\u8bf4\u660e\u6709\u5176\u4ed6\u7ec8\u7aef\u4f7f\u7528\u4e86\u6b64\u5730\u5740\uff0c\u5ba2\u6237\u7aef\u4f1a\u5411\u670d\u52a1\u5668\u53d1\u9001DHCP DECLINE\u62a5\u6587\uff0c\u5e76\u91cd\u65b0\u5411\u670d\u52a1\u5668\u8bf7\u6c42IP\u5730\u5740\uff0c\u540c\u65f6\uff0c\u670d\u52a1\u5668\u4f1a\u5c06\u6b64\u5730\u5740\u5217\u4e3a\u51b2\u7a81\u5730\u5740\u3002\u5f53\u670d\u52a1\u5668\u6ca1\u6709\u7a7a\u95f2\u5730\u5740\u53ef\u5206\u914d\u65f6\uff0c\u518d\u9009\u62e9\u51b2\u7a81\u5730\u5740\u8fdb\u884c\u5206\u914d\uff0c\u5c3d\u91cf\u51cf\u5c11\u5206\u914d\u51fa\u53bb\u7684\u5730\u5740\u51b2\u7a81\u3002<\/p>\n<p>\u5f53DHCP\u670d\u52a1\u5668\u6536\u5230DHCP\u5ba2\u6237\u7aef\u53d1\u9001\u7684DHCP REQUEST\u62a5\u6587\u540e\uff0c\u5982\u679cDHCP\u670d\u52a1\u5668\u7531\u4e8e\u67d0\u4e9b\u539f\u56e0\uff08\u4f8b\u5982\u534f\u5546\u51fa\u9519\u6216\u8005\u7531\u4e8e\u53d1\u9001REQUEST\u8fc7\u6162\u5bfc\u81f4\u670d\u52a1\u5668\u5df2\u7ecf\u628a\u6b64\u5730\u5740\u5206\u914d\u7ed9\u5176\u4ed6\u5ba2\u6237\u7aef\uff09\u65e0\u6cd5\u5206\u914dDHCP REQUEST\u62a5\u6587\u4e2dOption50\u586b\u5145\u7684IP\u5730\u5740\uff0c\u5219\u53d1\u9001<strong>DHCP NAK<\/strong>\u62a5\u6587\u4f5c\u4e3a\u5e94\u7b54\uff0c\u901a\u77e5DHCP\u5ba2\u6237\u7aef\u65e0\u6cd5\u5206\u914d\u6b64IP\u5730\u5740\u3002DHCP\u5ba2\u6237\u7aef\u9700\u8981\u91cd\u65b0\u53d1\u9001DHCP DISCOVER\u62a5\u6587\u6765\u7533\u8bf7\u65b0\u7684IP\u5730\u5740\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>\u6709\u4e2d\u7ee7\u573a\u666f\u65f6DHCP\u5ba2\u6237\u7aef\u9996\u6b21\u63a5\u5165\u7f51\u7edc\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>\u6709DHCP\u4e2d\u7ee7\u7684\u573a\u666f\u4e2d\uff0c\u9996\u6b21\u63a5\u5165\u7f51\u7edc\u7684DHCP\u5ba2\u6237\u7aef\u548cDHCP\u670d\u52a1\u5668\u7684\u5de5\u4f5c\u539f\u7406\u4e0e<strong>\u65e0\u4e2d\u7ee7\u573a\u666f\u65f6DHCP\u5ba2\u6237\u7aef\u9996\u6b21\u63a5\u5165\u7f51\u7edc\u7684\u5de5\u4f5c\u539f\u7406<\/strong>\u76f8\u540c\u3002\u4e3b\u8981\u5dee\u5f02\u662fDHCP\u4e2d\u7ee7\u5728DHCP\u670d\u52a1\u5668\u548cDHCP\u5ba2\u6237\u7aef\u4e4b\u95f4\u8f6c\u53d1DHCP\u62a5\u6587\uff0c\u4ee5\u4fdd\u8bc1DHCP\u670d\u52a1\u5668\u548cDHCP\u5ba2\u6237\u7aef\u53ef\u4ee5\u6b63\u5e38\u4ea4\u4e92\u3002\u4e0b\u9762\u4ec5\u9488\u5bf9DHCP\u4e2d\u7ee7\u7684\u5de5\u4f5c\u539f\u7406\u8fdb\u884c\u4ecb\u7ecd\u3002<\/p>\n<p>\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u5728\u90e8\u7f72DHCP\u4e2d\u7ee7\u7684\u573a\u666f\u4e0b\uff0c\u9996\u6b21\u63a5\u5165\u7f51\u7edcDHCP\u5ba2\u6237\u7aef\u4e0eDHCP\u670d\u52a1\u5668\u7684\u62a5\u6587\u4ea4\u4e92\u8fc7\u7a0b\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301744871.png\" referrerpolicy=\"no-referrer\" alt=\"1667116295620-de8c06e2-aef0-4185-9f8f-fc2ff6113c18\"><\/p>\n<h4>\u7b2c\u4e00\u6b65\uff1a\u53d1\u73b0\u9636\u6bb5<\/h4>\n<p>DHCP\u4e2d\u7ee7\u63a5\u6536\u5230DHCP\u5ba2\u6237\u7aef\u5e7f\u64ad\u53d1\u9001\u7684DHCP DISCOVER\u62a5\u6587\u540e\uff0c\u8fdb\u884c\u5982\u4e0b\u5904\u7406\uff1a<\/p>\n<ol>\n<li>\u68c0\u67e5DHCP\u62a5\u6587\u4e2d\u7684hops\u5b57\u6bb5\uff0c\u5982\u679c\u5927\u4e8e16\uff0c\u5219\u4e22\u5f03DHCP\u62a5\u6587\uff1b\u5426\u5219\uff0c<strong>\u5c06hops\u5b57\u6bb5\u52a01\uff08\u8868\u660e\u7ecf\u8fc7\u4e00\u6b21DHCP\u4e2d\u7ee7\uff09<\/strong>\uff0c\u5e76\u7ee7\u7eed\u4e0b\u9762\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u68c0\u67e5DHCP\u62a5\u6587\u4e2d\u7684giaddr\u5b57\u6bb5\u3002\u5982\u679c\u662f0\uff0c\u5c06giaddr\u5b57\u6bb5\u8bbe\u7f6e\u4e3a\u63a5\u6536DHCP DISCOVER\u62a5\u6587\u7684\u63a5\u53e3IP\u5730\u5740\u3002\u5982\u679c\u4e0d\u662f0\uff0c\u5219\u4e0d\u4fee\u6539\u8be5\u5b57\u6bb5\uff0c\u7ee7\u7eed\u4e0b\u9762\u7684\u64cd\u4f5c\u3002<\/li>\n<li>\u5c06DHCP\u62a5\u6587\u7684\u76ee\u7684IP\u5730\u5740\u6539\u4e3aDHCP\u670d\u52a1\u5668\u6216\u4e0b\u4e00\u8df3\u4e2d\u7ee7\u7684IP\u5730\u5740\uff0c\u6e90\u5730\u5740\u6539\u4e3a\u4e2d\u7ee7\u8fde\u63a5\u5ba2\u6237\u7aef\u7684\u63a5\u53e3\u5730\u5740\uff0c\u901a\u8fc7\u8def\u7531\u8f6c\u53d1\u5c06DHCP\u62a5\u6587\u5355\u64ad\u53d1\u9001\u5230DHCP\u670d\u52a1\u5668\u6216\u4e0b\u4e00\u8df3\u4e2d\u7ee7\u3002<\/li>\n<\/ol>\n<p>\u5982\u679cDHCP\u5ba2\u6237\u7aef\u4e0eDHCP\u670d\u52a1\u5668\u4e4b\u95f4\u5b58\u5728\u591a\u4e2aDHCP\u4e2d\u7ee7\uff0c\u540e\u9762\u7684\u4e2d\u7ee7\u63a5\u6536\u5230DHCP DISCOVER\u62a5\u6587\u7684\u5904\u7406\u6d41\u7a0b\u540c\u524d\u9762\u6240\u8ff0\u3002<\/p>\n<h4>\u7b2c\u4e8c\u6b65\uff1a\u63d0\u4f9b\u9636\u6bb5<\/h4>\n<p>DHCP\u670d\u52a1\u5668\u63a5\u6536\u5230DHCP DISCOVER\u62a5\u6587\u540e\uff0c\u9009\u62e9\u4e0e\u62a5\u6587\u4e2dgiaddr\u5b57\u6bb5\u4e3a\u540c\u4e00\u7f51\u6bb5\u7684\u5730\u5740\u6c60\uff0c\u5e76\u4e3a\u5ba2\u6237\u7aef\u5206\u914dIP\u5730\u5740\u7b49\u53c2\u6570\uff0c\u7136\u540e\u5411giaddr\u5b57\u6bb5\u6807\u8bc6\u7684DHCP\u4e2d\u7ee7\u5355\u64ad\u53d1\u9001DHCP OFFER\u62a5\u6587\u3002<\/p>\n<p>DHCP\u4e2d\u7ee7\u6536\u5230DHCP OFFER\u62a5\u6587\u540e\uff0c\u4f1a\u8fdb\u884c\u5982\u4e0b\u5904\u7406\uff1a<\/p>\n<ol>\n<li>\u68c0\u67e5\u62a5\u6587\u4e2d\u7684giaddr\u5b57\u6bb5\uff0c\u5982\u679c\u4e0d\u662f\u63a5\u53e3\u7684\u5730\u5740\uff0c\u5219\u4e22\u5f03\u8be5\u62a5\u6587\uff1b\u5426\u5219\uff0c\u7ee7\u7eed\u4e0b\u9762\u7684\u64cd\u4f5c\u3002<\/li>\n<li>DHCP\u4e2d\u7ee7\u68c0\u67e5\u62a5\u6587\u7684\u5e7f\u64ad\u6807\u5fd7\u4f4d\u3002\u5982\u679c\u5e7f\u64ad\u6807\u5fd7\u4f4d\u4e3a1\uff0c\u5219\u5c06DHCP OFFER\u62a5\u6587\u5e7f\u64ad\u53d1\u9001\u7ed9DHCP\u5ba2\u6237\u7aef\uff1b\u5426\u5219\u5c06DHCP OFFER\u62a5\u6587\u5355\u64ad\u53d1\u9001\u7ed9DHCP\u5ba2\u6237\u7aef\u3002<\/li>\n<\/ol>\n<h4>\u7b2c\u4e09\u6b65\uff1a\u9009\u62e9\u9636\u6bb5<\/h4>\n<p>\u4e2d\u7ee7\u63a5\u6536\u5230\u6765\u81ea\u5ba2\u6237\u7aef\u7684DHCP REQUEST\u62a5\u6587\u7684\u5904\u7406\u8fc7\u7a0b\u540c\u65e0\u4e2d\u7ee7\u573a\u666f\u4e0b\u7684\u9009\u62e9\u9636\u6bb5\u3002<\/p>\n<h4>\u7b2c\u56db\u6b65\uff1a\u786e\u8ba4\u9636\u6bb5<\/h4>\n<p>\u4e2d\u7ee7\u63a5\u6536\u5230\u6765\u81ea\u670d\u52a1\u5668\u7684DHCP ACK\u62a5\u6587\u7684\u5904\u7406\u8fc7\u7a0b\u540c\u65e0\u4e2d\u7ee7\u573a\u666f\u4e0b\u7684\u786e\u8ba4\u9636\u6bb5\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>DHCP\u5ba2\u6237\u7aef\u91cd\u7528\u66fe\u7ecf\u4f7f\u7528\u8fc7\u7684\u5730\u5740\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>DHCP\u5ba2\u6237\u7aef\u975e\u9996\u6b21\u63a5\u5165\u7f51\u7edc\u65f6\uff0c\u53ef\u4ee5\u91cd\u7528\u66fe\u7ecf\u4f7f\u7528\u8fc7\u7684\u5730\u5740\u3002\u5982\u4e0b\u56fe\u6240\u793a\uff0cDHCP\u5ba2\u6237\u7aef\u4e0eDHCP\u670d\u52a1\u5668\u4ea4\u4e92DHCP\u62a5\u6587\uff0c\u4ee5\u91cd\u65b0\u83b7\u53d6\u4e4b\u524d\u4f7f\u7528\u7684IP\u5730\u5740\u7b49\u7f51\u7edc\u53c2\u6570\uff0c\u8be5\u8fc7\u7a0b\u79f0\u4e3a\u4e24\u6b65\u4ea4\u4e92\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301744125.png\" referrerpolicy=\"no-referrer\" alt=\"1667116389882-9b6a1148-5393-4d4b-9e44-bde0e795fa7b\"><\/p>\n<h4>\u7b2c\u4e00\u6b65\uff1a\u9009\u62e9\u9636\u6bb5<\/h4>\n<p>\u5ba2\u6237\u7aef\u5e7f\u64ad\u53d1\u9001\u5305\u542b\u524d\u4e00\u6b21\u5206\u914d\u7684IP\u5730\u5740\u7684DHCP REQUEST\u62a5\u6587\uff0c\u62a5\u6587\u4e2d\u7684Option50\uff08\u8bf7\u6c42\u7684IP\u5730\u5740\u9009\u9879\uff09\u5b57\u6bb5\u586b\u5165\u66fe\u7ecf\u4f7f\u7528\u8fc7\u7684IP\u5730\u5740\u3002<\/p>\n<h4>\u7b2c\u4e8c\u6b65\uff1a\u786e\u8ba4\u9636\u6bb5<\/h4>\n<p>DHCP\u670d\u52a1\u5668\u6536\u5230DHCP REQUEST\u62a5\u6587\u540e\uff0c\u6839\u636eDHCP REQUEST\u62a5\u6587\u4e2d\u643a\u5e26\u7684MAC\u5730\u5740\u6765\u67e5\u627e\u6709\u6ca1\u6709\u76f8\u5e94\u7684\u79df\u7ea6\u8bb0\u5f55\uff0c\u5982\u679c\u6709\u5219\u8fd4\u56deDHCP ACK\u62a5\u6587\uff0c\u901a\u77e5DHCP\u5ba2\u6237\u7aef\u53ef\u4ee5\u7ee7\u7eed\u4f7f\u7528\u8fd9\u4e2aIP\u5730\u5740\u3002\u5426\u5219\uff0c\u4fdd\u6301\u6c89\u9ed8\uff0c\u7b49\u5f85\u5ba2\u6237\u7aef\u91cd\u65b0\u53d1\u9001DHCP DISCOVER\u62a5\u6587\u8bf7\u6c42\u65b0\u7684IP\u5730\u5740\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>DHCP\u5ba2\u6237\u7aef\u66f4\u65b0\u79df\u671f\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>DHCP\u670d\u52a1\u5668\u91c7\u7528\u52a8\u6001\u5206\u914d\u673a\u5236\u7ed9\u5ba2\u6237\u7aef\u5206\u914dIP\u5730\u5740\u65f6\uff0c\u5206\u914d\u51fa\u53bb\u7684IP\u5730\u5740\u6709\u79df\u671f\u9650\u5236\u3002DHCP\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u7533\u8bf7\u5730\u5740\u65f6\u53ef\u4ee5\u643a\u5e26\u671f\u671b\u79df\u671f\uff0c\u670d\u52a1\u5668\u5728\u5206\u914d\u79df\u671f\u65f6\u628a\u5ba2\u6237\u7aef\u671f\u671b\u79df\u671f\u548c\u5730\u5740\u6c60\u4e2d\u79df\u671f\u914d\u7f6e\u6bd4\u8f83\uff0c\u5206\u914d\u5176\u4e2d\u4e00\u4e2a\u8f83\u77ed\u7684\u79df\u671f\u7ed9\u5ba2\u6237\u7aef\u3002\u79df\u671f\u5230\u671f\u6216\u8005\u5ba2\u6237\u7aef\u4e0b\u7ebf\u91ca\u653e\u5730\u5740\u540e\uff0c\u670d\u52a1\u5668\u4f1a\u6536\u56de\u8be5IP\u5730\u5740\uff0c\u6536\u56de\u7684IP\u5730\u5740\u53ef\u4ee5\u7ee7\u7eed\u5206\u914d\u7ed9\u5176\u4ed6\u5ba2\u6237\u7aef\u4f7f\u7528\u3002\u8fd9\u79cd\u673a\u5236\u53ef\u4ee5\u63d0\u9ad8IP\u5730\u5740\u7684\u5229\u7528\u7387\uff0c\u907f\u514d\u5ba2\u6237\u7aef\u4e0b\u7ebf\u540eIP\u5730\u5740\u7ee7\u7eed\u88ab\u5360\u7528\u3002\u5982\u679cDHCP\u5ba2\u6237\u7aef\u5e0c\u671b\u7ee7\u7eed\u4f7f\u7528\u8be5\u5730\u5740\uff0c\u9700\u8981\u66f4\u65b0IP\u5730\u5740\u7684\u79df\u671f\uff08\u5982\u5ef6\u957fIP\u5730\u5740\u79df\u671f\uff09\u3002<\/p>\n<p>DHCP\u5ba2\u6237\u7aef\u66f4\u65b0\u79df\u671f\u7684\u8fc7\u7a0b\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301744923.png\" referrerpolicy=\"no-referrer\" alt=\"1667116428705-043957ba-9c51-445e-bfff-0c1a0b34633b\"><\/p>\n<ol>\n<li>\u5f53\u79df\u671f\u8fbe\u523050%\uff08T1\uff09\u65f6\uff0cDHCP\u5ba2\u6237\u7aef\u4f1a\u81ea\u52a8\u4ee5\u5355\u64ad\u7684\u65b9\u5f0f\u5411DHCP\u670d\u52a1\u5668\u53d1\u9001DHCP REQUEST\u62a5\u6587\uff0c\u8bf7\u6c42\u66f4\u65b0IP\u5730\u5740\u79df\u671f\u3002\u5982\u679c\u6536\u5230DHCP\u670d\u52a1\u5668\u56de\u5e94\u7684DHCP ACK\u62a5\u6587\uff0c\u5219\u79df\u671f\u66f4\u65b0\u6210\u529f\uff08\u5373\u79df\u671f\u4ece0\u5f00\u59cb\u8ba1\u7b97\uff09\uff1b\u5982\u679c\u6536\u5230DHCP NAK\u62a5\u6587\uff0c\u5219\u91cd\u65b0\u53d1\u9001DHCP DISCOVER\u62a5\u6587\u8bf7\u6c42\u65b0\u7684IP\u5730\u5740\u3002<\/li>\n<li>\u5f53\u79df\u671f\u8fbe\u523087.5%\uff08T2\uff09\u65f6\uff0c\u5982\u679c\u4ecd\u672a\u6536\u5230DHCP\u670d\u52a1\u5668\u7684\u5e94\u7b54\uff0cDHCP\u5ba2\u6237\u7aef\u4f1a\u81ea\u52a8\u4ee5\u5e7f\u64ad\u7684\u65b9\u5f0f\u5411DHCP\u670d\u52a1\u5668\u53d1\u9001DHCP REQUEST\u62a5\u6587\uff0c\u8bf7\u6c42\u66f4\u65b0IP\u5730\u5740\u79df\u671f\u3002\u5982\u679c\u6536\u5230DHCP\u670d\u52a1\u5668\u56de\u5e94\u7684DHCP ACK\u62a5\u6587\uff0c\u5219\u79df\u671f\u66f4\u65b0\u6210\u529f\uff08\u5373\u79df\u671f\u4ece0\u5f00\u59cb\u8ba1\u7b97\uff09\uff1b\u5982\u679c\u6536\u5230DHCP NAK\u62a5\u6587\uff0c\u5219\u91cd\u65b0\u53d1\u9001DHCP DISCOVER\u62a5\u6587\u8bf7\u6c42\u65b0\u7684IP\u5730\u5740\u3002<\/li>\n<li>\u5982\u679c\u79df\u671f\u65f6\u95f4\u5230\u65f6\u90fd\u6ca1\u6709\u6536\u5230\u670d\u52a1\u5668\u7684\u56de\u5e94\uff0c\u5ba2\u6237\u7aef\u505c\u6b62\u4f7f\u7528\u6b64IP\u5730\u5740\uff0c\u91cd\u65b0\u53d1\u9001DHCP DISCOVER\u62a5\u6587\u8bf7\u6c42\u65b0\u7684IP\u5730\u5740\u3002<\/li>\n<\/ol>\n<p>\u5ba2\u6237\u7aef\u5728\u79df\u671f\u65f6\u95f4\u5230\u4e4b\u524d\uff0c\u5982\u679c\u7528\u6237\u4e0d\u60f3\u4f7f\u7528\u5206\u914d\u7684IP\u5730\u5740\uff08\u4f8b\u5982\u5ba2\u6237\u7aef\u7f51\u7edc\u4f4d\u7f6e\u9700\u8981\u53d8\u66f4\uff09\uff0c\u4f1a\u89e6\u53d1DHCP\u5ba2\u6237\u7aef\u5411DHCP\u670d\u52a1\u5668\u53d1\u9001DHCP RELEASE\u62a5\u6587\uff0c\u901a\u77e5DHCP\u670d\u52a1\u5668\u91ca\u653eIP\u5730\u5740\u7684\u79df\u671f\u3002DHCP\u670d\u52a1\u5668\u4f1a\u4fdd\u7559\u8fd9\u4e2aDHCP\u5ba2\u6237\u7aef\u7684\u914d\u7f6e\u4fe1\u606f\uff0c\u5c06IP\u5730\u5740\u5217\u4e3a\u66fe\u7ecf\u5206\u914d\u8fc7\u7684IP\u5730\u5740\u4e2d\uff0c\u4ee5\u4fbf\u540e\u7eed\u91cd\u65b0\u5206\u914d\u7ed9\u8be5\u5ba2\u6237\u7aef\u6216\u5176\u4ed6\u5ba2\u6237\u7aef\u3002\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7\u53d1\u9001DHCP INFORM\u62a5\u6587\u5411\u670d\u52a1\u5668\u8bf7\u6c42\u66f4\u65b0\u914d\u7f6e\u4fe1\u606f\u3002<\/p>\n<p>\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u90e8\u7f72DHCP\u4e2d\u7ee7\u65f6\uff0c\u66f4\u65b0\u79df\u671f\u7684\u8fc7\u7a0b\u4e0e\u4e0a\u8ff0\u8fc7\u7a0b\u76f8\u4f3c\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301744049.png\" referrerpolicy=\"no-referrer\" alt=\"1667116449192-0c100899-4aee-4273-a271-9190a3be2135\"><\/p>\n<p>&nbsp;<\/p>\n<h2>\u5b9e\u9a8c<\/h2>\n<p>\u8fd8\u662f\u8001\u6837\u5b50\u5148\u5949\u4e0a\u5b8c\u6574\u62d3\u6251\uff08\u5df2\u914d\u7f6e\u597d\uff09<a href=\"https:\/\/resource.chentaiyang.space\/ensp-DHCP.zip\">\u6233\u6211\ud83c\udf39<\/a><\/p>\n<h3>\u62d3\u6251\u56fe<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301745325.png\" referrerpolicy=\"no-referrer\" alt=\"1667116545567-b1f7b6cd-abb3-475a-8019-826a10ae89b8\"><\/p>\n<p>\u6982\u8ff0\uff1a<\/p>\n<ul>\n<li>AR1\u3001AR2\u3001AR3\u505aDHCP\u4e2d\u7ee7\u5668\uff1b\u6bcf\u4e2a\u8def\u7531\u5668\u7684\u4e0a\u884c\u63a5\u53e3\u5730\u5740\u7531DHCP\u670d\u52a1\u5668\u5206\u914d<\/li>\n<li>AR4\u4e3aDHCP\u670d\u52a1\u5668\uff1bAR5\u6a21\u62df\u5916\u7f51<\/li>\n<li>\u52a8\u6001\u8def\u7531\u534f\u8bae\u4f7f\u7528ospf<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>\u914d\u7f6e\u547d\u4ee4<\/h3>\n<p>DHCP \u670d\u52a1\u5668\uff1aAR4\u4e0a<\/p>\n<pre><code>\/\/ AR4\u914d\u7f6e \u5373DHCP\u670d\u52a1\u5668\u914d\u7f6e\n\n\/\/ \u7ed9\u8def\u7531\u5668\u5206\u914d\u5730\u5740:\nip pool router-pool\nnetwork 172.16.1.0 mask 24\ngate-way list 172.16.1.1   \/\/ \u7f51\u5173 AR4 g0\/0\/1\u63a5\u53e3\u5730\u5740\n\n\/\/ \u7ed9PC\u673a\u5206\u914d\u5730\u5740\n\/\/ \u5212\u5206\u7f51\u6bb5\uff1a\u6bcf\u4e2a\u7f51\u6bb5\u5927\u698250\u591a\u5404ip\u5730\u5740\uff0c\u6240\u4ee5\u5b50\u7f51\u63a9\u7801\u4e3a:26\n\/\/ \u521b\u5efa\u5730\u5740\u6c60\uff1a\nip pool pc-pool1\nnetwork 192.168.1.0 mask 26 \ngate-way list 192.168.1.1 #AR1\u3001AR2\u3001AR3g0\/0\/0\u63a5\u53e3\u5730\u5740\nlease day 999  \/\/ \u79df\u671f\n\/\/ \u5269\u4e0b2\u4e2a\u5730\u5740\u6c60\u4ee5\u6b64\u7c7b\u63a8\n\n\/\/ \u5728g0\/0\/0\u63a5\u53e3\u4e0a:\nip add 172.16.1.1 24\ndhcp select global   \/\/ \u5168\u5c40\u6a21\u5f0f\n<\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>DHCP \u4e2d\u7ee7\u5668\uff1a\u4ee5AR1\u4e3a\u4f8b<\/p>\n<pre><code>\/\/ AR1\u3001AR2\u3001AR3\u914d\u7f6e \u5373DHCP\u4e2d\u7ee7\u5668\u914d\u7f6e\n\n\/\/ \u4ee5AR1\u4e3a\u4f8b:\n\/\/ \u7cfb\u7edf\u8bd5\u56fe\u4e0b\uff1a\ndhcp enable\n\n\/\/ \u5728g0\/0\/1\u63a5\u53e3\u4e0a\uff1a\nip address dhcp-alloc #g\/0\/0\/1\u63a5\u53e3\u5730\u5740\u4e3aAR4\u5206\u914d\u7684\u5730\u5740\n\n\/\/ \u5728g0\/0\/0\u63a5\u53e3\u4e0a\uff1a\nip address 192.168.1.1 26\ndhcp select relay\ndhcp relay server-ip 172.16.1.1 #AR4 g0\/0\/1\u63a5\u53e3\u5730\u5740\n<\/code><\/pre>\n<p>AR2\u3001AR3\u4f9d\u6b21\u7c7b\u63a8<\/p>\n<p>&nbsp;<\/p>\n<h3>\u6d4b\u8bd5<\/h3>\n<p>pc1 \u4f7f\u7528DHCP\u6a21\u5f0f<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301745925.png\" referrerpolicy=\"no-referrer\" alt=\"1667116965898-df637039-6f3a-417a-92ea-ceb0c51709b7\"><\/p>\n<p>\u67e5\u770b\u83b7\u53d6\u5230\u7684\u5730\u5740<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301745064.png\" referrerpolicy=\"no-referrer\" alt=\"1667117003218-972f0314-a53b-4286-9734-fde2bcdf7d43\"><\/p>\n<p>&nbsp;<\/p>\n<p>\u67e5\u770bDHCP\u5730\u5740\u6c60\u4f7f\u7528\u60c5\u51b5   <code>display ip pool name \u5730\u5740\u6c60\u540d\u5b57<\/code><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301745512.png\" referrerpolicy=\"no-referrer\" alt=\"1667117143257-886b71ee-f9b5-47ab-8e85-97d4792d0b48\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/picture.chentaiyang.space\/PicGo202210301745957.png\" referrerpolicy=\"no-referrer\" alt=\"1667117192534-0eac271d-a9f8-4854-b51a-28694373f834\"><\/p>\n<p>\u548c\u8bbe\u8ba1\u7684\u4e00\u6837<\/p>\n<p>&nbsp;<\/p>\n<p>\u672c\u6587\u5b8c<\/p>\n<p>\u656c\u7231\u4e0e\u660e\u5929\ud83c\udf39<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u8ff0DHCP\u534f\u8bae\u5e76\u7528ensp\u6a21\u62df\u5b9e\u9a8c<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[81,62,36],"class_list":["post-285","post","type-post","status-publish","format-standard","hentry","category-huawei","tag-ensp","tag-62","tag-36"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>DHCP\u7b80\u8ff0 - #\u762b\u7537\u65e5\u8bb0<\/title>\n<meta name=\"robots\" content=\"index, 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