{"id":31564,"date":"2025-04-21T17:21:02","date_gmt":"2025-04-21T09:21:02","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/31564.html"},"modified":"2025-04-21T17:21:02","modified_gmt":"2025-04-21T09:21:02","slug":"%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3linux%e6%93%8d%e4%bd%9c%e7%b3%bb%e7%bb%9f-%e7%ac%ac16%e8%ae%b2-dhcp-%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/31564.html","title":{"rendered":"\u6df1\u5165\u7406\u89e3linux\u64cd\u4f5c\u7cfb\u7edf---\u7b2c16\u8bb2 DHCP \u670d\u52a1\u5668"},"content":{"rendered":"<h3>16.1 DHCP\u4ecb\u7ecd<\/h3>\n<h4>16.1.1 DHCP\u534f\u8bae<\/h4>\n<p>DHCP&#xff08;Dynamic Host Configuration Protocol&#xff09;\u662f\u4e00\u79cd\u57fa\u4e8eUDP\u534f\u8bae\u7684\u5e94\u7528\u5c42\u534f\u8bae&#xff0c;\u4e3b\u8981\u7528\u4e8e\u5c40\u57df\u7f51\u73af\u5883\u4e2d\u7684IP\u5730\u5740\u52a8\u6001\u5206\u914d\u3002\u5176\u6838\u5fc3\u529f\u80fd\u5305\u62ec&#xff1a;<\/p>\n<ul>\n<li>\u81ea\u52a8\u5316IP\u5206\u914d&#xff1a;\u81ea\u52a8\u5206\u914dIP\u5730\u5740\u3001\u5b50\u7f51\u63a9\u7801\u3001\u9ed8\u8ba4\u7f51\u5173\u3001DNS\u670d\u52a1\u5668\u7b49\u53c2\u6570\u3002<\/li>\n<li>\u8d44\u6e90\u7ba1\u7406&#xff1a;\u901a\u8fc7\u79df\u7ea6\u673a\u5236&#xff08;Lease Time&#xff09;\u63d0\u9ad8IP\u5730\u5740\u5229\u7528\u7387&#xff0c;\u907f\u514d\u5730\u5740\u51b2\u7a81\u3002<\/li>\n<li>\u534f\u8bae\u67b6\u6784&#xff1a;\u57fa\u4e8e\u5ba2\u6237\u7aef-\u670d\u52a1\u5668\u6a21\u578b&#xff0c;\u5ba2\u6237\u7aef\u901a\u8fc7\u5e7f\u64ad\u4e0e\u670d\u52a1\u5668\u4ea4\u4e92&#xff0c;\u4f7f\u7528UDP\u7aef\u53e367&#xff08;\u670d\u52a1\u5668&#xff09;\u548c68&#xff08;\u5ba2\u6237\u7aef&#xff09;\u3002<\/li>\n<\/ul>\n<p>DHCP\u7684\u4e94\u5927\u6838\u5fc3\u4f18\u52bf\u5305\u62ec&#xff1a;\u51cf\u5c11\u4eba\u5de5\u914d\u7f6e\u9519\u8bef\u3001\u907f\u514dIP\u51b2\u7a81\u3001\u63d0\u5347\u7ba1\u7406\u6548\u7387\u3001\u652f\u6301\u79fb\u52a8\u8bbe\u5907\u63a5\u5165\u3001\u7b80\u5316\u7f51\u7edc\u6269\u5c55\u3002<\/p>\n<hr \/>\n<h4>16.1.2 DHCP\u7684\u5de5\u4f5c\u8fc7\u7a0b&#xff08;DORA\u6d41\u7a0b&#xff09;<\/h4>\n<p>DHCP\u4ea4\u4e92\u5206\u4e3a\u56db\u4e2a\u9636\u6bb5&#xff0c;\u5373DORA\u6d41\u7a0b&#xff1a;<\/p>\n<li>\u53d1\u73b0\u9636\u6bb5&#xff08;Discover&#xff09; \u5ba2\u6237\u7aef\u5e7f\u64ad\u53d1\u9001DHCPDISCOVER\u62a5\u6587&#xff0c;\u5bfb\u627e\u53ef\u7528\u670d\u52a1\u5668\u3002<\/li>\n<li>\u63d0\u4f9b\u9636\u6bb5&#xff08;Offer&#xff09; \u670d\u52a1\u5668\u54cd\u5e94DHCPOFFER\u62a5\u6587&#xff0c;\u63d0\u4f9bIP\u5730\u5740\u53ca\u914d\u7f6e\u53c2\u6570\u3002\n<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"752\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250421092101-68060dfd2c7a2.jpg\" width=\"1271\" \/><\/p>\n<\/li>\n<li>\u8bf7\u6c42\u9636\u6bb5&#xff08;Request&#xff09; \u5ba2\u6237\u7aef\u9009\u62e9\u6700\u4f18Offer&#xff0c;\u5e7f\u64adDHCPREQUEST\u786e\u8ba4\u8bf7\u6c42\u3002<\/li>\n<li>\u786e\u8ba4\u9636\u6bb5&#xff08;Acknowledge&#xff09; \u670d\u52a1\u5668\u8fd4\u56deDHCPACK&#xff0c;\u786e\u8ba4\u5206\u914d\u5e76\u8bb0\u5f55\u79df\u7ea6\u3002<\/li>\n<p>\u7279\u6b8a\u573a\u666f&#xff1a;<\/p>\n<ul>\n<li>\u7eed\u79df\u673a\u5236&#xff1a;\u79df\u671f\u8fc7\u534a\u65f6&#xff0c;\u5ba2\u6237\u7aef\u4e3b\u52a8\u53d1\u9001DHCPREQUEST\u7eed\u79df\u3002<\/li>\n<li>\u5730\u5740\u91ca\u653e&#xff1a;\u5ba2\u6237\u7aef\u4e0b\u7ebf\u65f6\u53d1\u9001DHCPRELEASE\u4e3b\u52a8\u91ca\u653eIP\u3002<\/li>\n<li>APIPA\u673a\u5236&#xff1a;\u5f53\u65e0\u670d\u52a1\u5668\u54cd\u5e94\u65f6&#xff0c;Windows\u81ea\u52a8\u5206\u914d169.254.0.0\/16\u5730\u5740\u3002<\/li>\n<\/ul>\n<hr \/>\n<h3>16.2 \u8f6f\u4ef6\u5305\u5b89\u88c5\u4e0e\u670d\u52a1\u7ba1\u7406<\/h3>\n<h4 style=\"background-color:transparent\">\u5b89\u88c5\u6b65\u9aa4&#xff08;\u4ee5RHEL\/CentOS\u4e3a\u4f8b&#xff09;<\/h4>\n<li>\n<p>\u5b89\u88c5\u8f6f\u4ef6\u5305<\/p>\n<p> yum install dhcp-server -y  # \u5b89\u88c5DHCP\u670d\u52a1<br \/>\nrpm -qa | grep dhcp        # \u9a8c\u8bc1\u5b89\u88c5\n <\/li>\n<li>\n<p>\u670d\u52a1\u7ba1\u7406\u547d\u4ee4<\/p>\n<p> systemctl start dhcpd      # \u542f\u52a8\u670d\u52a1<br \/>\nsystemctl enable dhcpd     # \u8bbe\u7f6e\u5f00\u673a\u81ea\u542f<br \/>\nsystemctl status dhcpd     # \u67e5\u770b\u72b6\u6001\n <\/li>\n<hr \/>\n<h3>16.3 DHCP\u914d\u7f6e\u8be6\u89e3<\/h3>\n<h4>16.3.1 \u914d\u7f6e\u6587\u4ef6\u7ed3\u6784<\/h4>\n<p>\u4e3b\u914d\u7f6e\u6587\u4ef6\/etc\/dhcp\/dhcpd.conf\u5206\u4e3a\u4e09\u90e8\u5206&#xff1a;<\/p>\n<li>\u5168\u5c40\u53c2\u6570&#xff1a;\u4f5c\u7528\u4e8e\u6240\u6709\u5b50\u7f51&#xff0c;\u5982\u79df\u7ea6\u65f6\u95f4\u3001DNS\u8bbe\u7f6e\u3002<\/li>\n<li>\u5b50\u7f51\u58f0\u660e&#xff1a;\u5b9a\u4e49\u7279\u5b9a\u5b50\u7f51\u7684IP\u6c60\u548c\u53c2\u6570\u3002<\/li>\n<li>\u4e3b\u673a\u58f0\u660e&#xff1a;\u4e3a\u7279\u5b9aMAC\u5730\u5740\u5206\u914d\u56fa\u5b9aIP\u3002<\/li>\n<h4>16.3.2 \u5173\u952e\u53c2\u6570\u4e0e\u9009\u9879<\/h4>\n<h5>\u57fa\u7840\u53c2\u6570<\/h5>\n<p>subnet 192.168.1.0 netmask 255.255.255.0 {  # \u5b50\u7f51\u58f0\u660e<br \/>\n    range 192.168.1.10 192.168.1.200;      # IP\u5730\u5740\u6c60<br \/>\n    option routers 192.168.1.1;            # \u9ed8\u8ba4\u7f51\u5173<br \/>\n    option domain-name-servers 8.8.8.8;     # DNS\u670d\u52a1\u5668<br \/>\n    default-lease-time 600;                 # \u9ed8\u8ba4\u79df\u671f&#xff08;\u79d2&#xff09;<br \/>\n    max-lease-time 7200;                    # \u6700\u5927\u79df\u671f<br \/>\n}<\/p>\n<h5>\u9ad8\u7ea7\u529f\u80fd<\/h5>\n<ul>\n<li>\n<p>\u9759\u6001IP\u7ed1\u5b9a<\/p>\n<p> host printer {<br \/>\n    hardware ethernet 00:0c:29:aa:bb:cc;  # MAC\u5730\u5740<br \/>\n    fixed-address 192.168.1.100;          # \u56fa\u5b9aIP<br \/>\n}\n <\/li>\n<li>\n<p>\u591a\u5b50\u7f51\u652f\u6301 \u901a\u8fc7\u591a\u4e2asubnet\u58f0\u660e\u5b9e\u73b0\u4e0d\u540cVLAN\u7684IP\u5206\u914d\u3002<\/p>\n<\/li>\n<\/ul>\n<hr \/>\n<h3>16.4 DHCP\u89c4\u5212\u4e0e\u9ad8\u53ef\u7528<\/h3>\n<h4>16.4.1 \u591a\u7f51\u7edc\u90e8\u7f72<\/h4>\n<ul>\n<li>\u591a\u5b50\u7f51\u914d\u7f6e&#xff1a;\u5728dhcpd.conf\u4e2d\u4e3a\u6bcf\u4e2a\u5b50\u7f51\u5b9a\u4e49\u72ec\u7acb\u7684subnet\u5757\u3002<\/li>\n<li>\u4e2d\u7ee7\u4ee3\u7406&#xff1a;\u8de8\u5b50\u7f51\u65f6\u9700\u5728\u8def\u7531\u5668\u914d\u7f6e\u4e2d\u7ee7&#xff0c;\u8f6c\u53d1DHCP\u5e7f\u64ad\u3002 interface GigabitEthernet0\/0\/0<br \/>\n  dhcp select relay                # \u542f\u7528\u4e2d\u7ee7<br \/>\n  dhcp relay server-ip 172.16.1.1  # \u6307\u5b9a\u670d\u52a1\u5668IP\n <\/li>\n<\/ul>\n<h4>16.4.2 \u4e3b\u5907\u670d\u52a1\u5668\u642d\u5efa<\/h4>\n<li>\u4e3b\u5907\u540c\u6b65&#xff1a;\u4f7f\u7528rsync\u5b9a\u65f6\u540c\u6b65\u914d\u7f6e\u6587\u4ef6\u3002<\/li>\n<li>\u8d1f\u8f7d\u5747\u8861&#xff1a;\u901a\u8fc7load balance\u53c2\u6570\u5206\u914d\u8bf7\u6c42\u3002<\/li>\n<li>\u6545\u969c\u5207\u6362&#xff1a;\u5ba2\u6237\u7aef\u5728\u79df\u7ea6\u8fc7\u671f\u540e\u81ea\u52a8\u5207\u6362\u81f3\u5907\u7528\u670d\u52a1\u5668\u3002<\/li>\n<hr \/>\n<h3 style=\"background-color:transparent\">16.5 \u9632\u706b\u5899\u4e0eSELinux\u914d\u7f6e<\/h3>\n<h4>\u9632\u706b\u5899\u89c4\u5219<\/h4>\n<ul>\n<li>\u653e\u884c\u7aef\u53e3&#xff1a;\u5141\u8bb8UDP 67\/68\u7aef\u53e3\u3002 firewall-cmd &#8211;permanent &#8211;add-service&#061;dhcp  # firewalld<br \/>\nufw allow 67\/udp &amp;&amp; ufw allow 68\/udp        # ufw\n <\/li>\n<\/ul>\n<h4>SELinux\u7b56\u7565\u8c03\u6574<\/h4>\n<ul>\n<li>\u5e38\u89c1\u95ee\u9898&#xff1a;SELinux\u53ef\u80fd\u963b\u6b62dhcpd\u7ed1\u5b9a\u7aef\u53e3\u6216\u4fee\u6539\u79df\u7ea6\u6587\u4ef6\u3002<\/li>\n<li>\u89e3\u51b3\u65b9\u6848&#xff1a; setsebool -P dhcpd_use_unicast 1  # \u5141\u8bb8\u5355\u64ad<br \/>\nsemanage port -a -t dhcp_port_t -p udp 67  # \u6dfb\u52a0\u7aef\u53e3\u89c4\u5219\n <\/li>\n<\/ul>\n<hr \/>\n<h3 style=\"background-color:transparent\">16.6 \u7ec3\u4e60\u9898<\/h3>\n<h4>16.6.1 \u601d\u8003\u9898<\/h4>\n<p>&#xff08;1&#xff09;\u7b80\u8ff0DHCP\u7684\u529f\u80fd\u3002<\/p>\n<p>&#xff08;2&#xff09;\u7b80\u8ff0DHCP\u914d\u7f6e\u6587\u4ef6\u7684\u76f8\u5173\u9009\u9879\u53ca\u542b\u4e49\u3002<\/p>\n<p>&#xff08;3&#xff09;\u7b80\u8ff0\u5728\u4e0d\u540c\u7f51\u7edc\u73af\u5883\u4e2dDHCP\u7684\u89c4\u5212\u3002<\/p>\n<p>&#xff08;4&#xff09;\u7b80\u8ff0DHCP\u4e2d\u7ee7\u7684\u542b\u4e49\u53ca\u5176\u5e94\u7528\u3002<\/p>\n<h4>16.6.2 \u7efc\u5408\u9898<\/h4>\n<p>&#xff08;1&#xff09;\u8bd5\u8ff0DHCP\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<p>&#xff08;2&#xff09;\u5728\u8bbe\u7f6eDHCP\u5907\u4efd\u65f6&#xff0c;\u5e94\u8be5\u6ce8\u610f\u548c\u89e3\u51b3\u54ea\u4e9b\u95ee\u9898&#xff1f;<\/p>\n<h4>16.6.3\u00a0\u7b54\u6848<\/h4>\n<h5>1. \u601d\u8003\u9898<\/h5>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">&#xff08;1&#xff09;\u7b80\u8ff0DHCP\u7684\u529f\u80fd\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u89e3&#xff1a;<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0DHCP\u7684\u524d\u8eab\u662fBOOTP\u3002<span style=\"background-color:#ffffff\"><span style=\"color:#333333\">BOOTP&#xff08;Bootstrap Protocol&#xff09;\u662f\u4e00\u79cd\u5f15\u5bfc\u534f\u8bae&#xff0c;\u57fa\u4e8eIP\/UDP\u534f\u8bae&#xff0c;\u4e5f\u79f0\u81ea\u4e3e\u534f\u8bae\u3002<\/span><\/span>BOOTP\u539f\u672c\u662f\u7528\u4e8e\u65e0\u78c1\u76d8\u4e3b\u673a\u8fde\u63a5\u7684\u7f51\u7edc\u73af\u5883\u4e2d&#xff0c;\u7f51\u7edc\u4e3b\u673a\u4f7f\u7528BOOT ROM\u800c\u4e0d\u662f\u78c1\u76d8\u8d77\u52a8\u5e76\u8fde\u63a5\u4e0a\u7f51\u7edc&#xff0c;\u901a\u8fc7BOOTP\u81ea\u52a8\u5730\u4e3a\u90a3\u4e9b\u4e3b\u673a\u8bbe\u5b9aTCP\/IP\u73af\u5883\u3002\u4f46BOOTP\u6709\u4e00\u4e2a\u7f3a\u70b9&#xff0c;\u662f\u5728\u8bbe\u5b9a\u524d\u987b\u4e8b\u5148\u83b7\u5f97\u5ba2\u6237\u7aef\u7684\u786c\u4ef6\u5730\u5740&#xff0c;\u800c\u4e14IP\u662f\u9759\u6001\u7684\u3002\u82e5\u5728\u6709\u9650\u7684IP\u8d44\u6e90\u73af\u5883\u4e2d&#xff0c;BOOTP\u7684\u4e00\u4e00\u5bf9\u5e94\u4f1a\u9020\u6210\u975e\u5e38\u4e25\u91cd\u7684\u8d44\u6e90\u6d6a\u8d39\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0DHCP\u662fBOOTP\u7684\u589e\u5f3a\u7248\u672c\ufe50\u5b83\u5206\u4e3a\u4e24\u4e2a\u90e8\u4efd&#xff1a;\u670d\u52a1\u5668\u7aef\u548c\u5ba2\u6237\u7aef\u3002\u5728\u6b64\u673a\u5236\u4e0b&#xff0c;DHCP\u670d\u52a1\u5668\u96c6\u4e2d\u7ba1\u7406\u6240\u6709\u7684IP\u7f51\u7edc\u914d\u7f6e\u6570\u636e&#xff0c;\u5e76\u8d1f\u8d23\u5904\u7406\u5ba2\u6237\u7aef\u7684DHCP\u8981\u6c42&#xff1b;\u800c\u5ba2\u6237\u7aef\u5219\u4f1a\u4f7f\u7528\u4ece\u670d\u52a1\u5668\u5206\u914d\u4e0b\u6765\u7684IP\u6570\u636e&#xff0c;\u914d\u7f6e\u81ea\u5df1\u7684\u7f51\u7edc\u53c2\u6570\u3002\u6bcf\u4e2aDHCP\u5ba2\u6237\u8fde\u63a5\u5230DHCP\u670d\u52a1\u5668\u4e0a\u65f6&#xff0c;\u670d\u52a1\u5668\u5c31\u4f1a\u8fd4\u56de\u5305\u62ecIP\u5730\u5740\u3001\u7f51\u5173\u548cDNS\u670d\u52a1\u5668\u7b49\u4fe1\u606f\u7ed9\u5ba2\u6237\u7aef&#xff0c;\u8ba9\u5176\u4ee5\u6b64\u914d\u7f6e\u81ea\u5df1\u7f51\u7edc\u53c2\u6570\u3002\u76f8\u5bf9BOOTP&#xff0c;DHCP\u901a\u8fc7\u201c\u79df\u7ea6\u201d\u7684\u6982\u5ff5&#xff0c;\u6709\u6548\u4e14\u52a8\u6001\u7684\u5206\u914d\u5ba2\u6237\u7aef\u7684TCP\/IP\u76f8\u5173\u5c5e\u6027\u7684\u8bbe\u5b9a&#xff0c;\u800c\u4e14\u4f5c\u4e3a\u517c\u5bb9\u8003\u8651&#xff0c;DHCP\u4e5f\u5b8c\u5168\u7167\u987e\u4e86BOOTP Client\u7684\u9700\u6c42\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">&#xff08;2&#xff09;\u7b80\u8ff0DHCP\u914d\u7f6e\u6587\u4ef6\u7684\u76f8\u5173\u9009\u9879\u53ca\u6db5\u4e49\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u89e3&#xff1a;<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u53c2\u89c1dhcpd.conf\u548cdhcp-options\u7684man\u624b\u518c\u3002\u8fd8\u53ef\u53c2\u8003\u914d\u7f6e\u6837\u672c\u6587\u4ef6\/usr\/share\/doc\/isc-dhcp-server\/examples\/dhcpd.conf.example&#xff08;Ubuntu&#xff09;\u548c\/usr\/share\/doc\/dhcp-server\/dhcpd.conf.example&#xff08;\u7ea2\u5e3d&#xff09;\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">&#xff08;3&#xff09;\u5728\u4e0d\u540c\u7f51\u7edc\u73af\u5883\u4e2dDHCP\u7684\u89c4\u5212\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u89e3&#xff1a;<\/p>\n<p 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style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u5728\u5927\u578b\u7f51\u7edc\u4e2d\u901a\u5e38\u4f1a\u91c7\u7528\u8def\u7531\u5668\u5c06\u7f51\u7edc\u5212\u5206\u4e3a\u591a\u4e2a\u7269\u7406\u5b50\u7f51&#xff0c;\u800c\u8def\u7531\u5668\u7684\u4e3b\u8981\u529f\u80fd\u5c31\u662f\u5c4f\u853d\u5b50\u7f51\u95f4\u7684\u5e7f\u64ad\u3001\u51cf\u5c11\u7f51\u7edc\u5e26\u5bbd\u5360\u7528\u3001\u63d0\u9ad8\u7f51\u7edc\u6027\u80fd\u3002\u5982\u679c\u5b50\u7f51\u4e2d\u6ca1\u6709\u4e00\u53f0DHCP\u670d\u52a1\u5668&#xff0c;\u90a3\u4e48\u6bcf\u4e2a\u5b50\u7f51\u4e2d\u7684\u4e3b\u673a\u5c06\u6ca1\u6709\u529e\u6cd5\u8de8\u8d8a\u5b50\u7f51\u6765\u5b9a\u4f4dDHCP\u670d\u52a1\u5668&#xff0c;\u4e5f\u5c31\u65e0\u6cd5\u83b7\u5f97IP\u5730\u5740\u3002\u8981\u60f3\u89e3\u51b3\u8fd9\u6837\u7684\u95ee\u9898&#xff0c;\u53ef\u4ee5\u6709\u4e24\u79cd\u65b9\u6cd5&#xff1a;<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">a. 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style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u89e3&#xff1a;<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">DHCP\u4e2d\u7ee7\u4ee3\u7406&#xff08;DHCP 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style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">&#xff08;1&#xff09;\u8bd5\u8ff0DHCP\u7684\u5de5\u4f5c\u539f\u7406\u3002<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u89e3&#xff1a;<\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">DHCP\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/p>\n<p class=\"img-center\"><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"274\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250421092101-68060dfd9c600.png\" width=\"725\" \/><\/p>\n<p style=\"margin-left:.0001pt;margin-right:0;text-align:justify\">\u2460\u67e5\u627edhcp\u670d\u52a1\u5668&#xff1a;\u5f53DHCP\u5ba2\u6237\u7aef\u7b2c\u4e00\u6b21\u767b\u5f55\u7f51\u7edc\u7684\u65f6\u5019&#xff0c;\u4e5f\u5c31\u662f\u5ba2\u6237\u53d1\u73b0\u672c\u673a\u4e0a\u6ca1\u6709\u4efb\u4f55IP\u8bbe\u7f6e\u4fe1\u606f&#xff0c;\u5b83\u4f1a\u5411\u7f51\u7edc\u53d1\u51fa\u4e00\u4e2aDHCPDISCOVER\u6570\u636e\u5305\u3002\u56e0\u4e3a\u5ba2\u6237\u7aef\u8fd8\u4e0d\u77e5\u9053\u81ea\u5df1\u5c5e\u4e8e\u54ea\u4e00\u4e2a\u7f51\u7edc&#xff0c;\u6240\u4ee5\u6570\u636e\u5305\u7684\u6e90\u5730\u5740\u6807\u8bb0\u4e3a0.0.0.0&#xff0c;\u800c\u76ee\u7684\u5730\u5740\u5219\u4e3a255.255.255.255&#xff0c;\u7136\u540e\u518d\u9644\u4e0aDHCPDISCOVER\u7684\u4fe1\u606f&#xff0c;\u5411\u7f51\u7edc\u8fdb\u884c\u5e7f\u64ad\u3002<\/p>\n<p 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