# Openwrt中dhcp选项 各数字的含义

**URL:** <https://eijil.com/t/openwrt-dhcp/34>\
**Category:** 其它\
**Created:** [December 31, 2020, 9:58am UTC](https://eijil.com/t/openwrt-dhcp/34 "2020-12-31T09:58:04Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![linuxren](https://eijil.com/user_avatar/eijil.com/linuxren/32/6_2.png) [@linuxren](https://eijil.com/u/linuxren)\
**Post date:** [December 31, 2020, 9:58am UTC](https://eijil.com/t/openwrt-dhcp/34/1 "2020-12-31T09:58:04Z")

</div>

Known DHCP options:  
1 netmask  
2 time-offset  
3 router  
6 dns-server  
7 log-server  
9 lpr-server  
13 boot-file-size  
15 domain-name  
16 swap-server  
17 root-path  
18 extension-path  
19 ip-forward-enable  
20 non-local-source-routing  
21 policy-filter  
22 max-datagram-reassembly  
23 default-ttl  
26 mtu  
27 all-subnets-local  
31 router-discovery  
32 router-solicitation  
33 static-route  
34 trailer-encapsulation  
35 arp-timeout  
36 ethernet-encap  
37 tcp-ttl  
38 tcp-keepalive  
40 nis-domain  
41 nis-server  
42 ntp-server  
44 netbios-ns  
45 netbios-dd  
46 netbios-nodetype  
47 netbios-scope  
48 x-windows-fs  
49 x-windows-dm  
60 vendor-class  
64 nis±domain  
65 nis±server  
66 tftp-server  
67 bootfile-name  
68 mobile-ip-home  
69 smtp-server  
70 pop3-server  
71 nntp-server  
74 irc-server  
77 user-class  
93 client-arch  
94 client-interface-id  
97 client-machine-id  
119 domain-search  
120 sip-server  
121 classless-static-route  
125 vendor-id-encap  
255 server-ip-address