| 场景 | VLAN 网关跨网段找 DHCP 服务器 |
|---|---|
| 适用 | 华为 VRP |
| 命令族 | dhcp select relay / dhcp relay server-ip |
华为 VRP
华为 VRP
dhcp enable
interface Vlanif10
ip address 192.168.10.1 255.255.255.0
dhcp select relay
dhcp relay server-ip 10.0.0.100
display dhcp relay statistics思科 IOS
思科 IOS
interface Vlan10
ip address 192.168.10.1 255.255.255.0
ip helper-address 10.0.0.100
! 一条命令即完成中继H3C Comware
H3C Comware
dhcp enable
interface Vlan-interface10
ip address 192.168.10.1 255.255.255.0
dhcp select relay
dhcp relay server-select 1
! 服务器组需先建：dhcp relay server-group 1 ip 10.0.0.100
display dhcp relay server-group all差异：思科一条 ip helper-address 搞定；华为接口两条命令；H3C 必须先建 server-group 再 server-select 引用。三厂中继都会把 giaddr 填成本接口地址供服务器选池。