DELL 8132 ユーザーズマニュアル

IP Helper/DHCP Relay Commands

This check is enabled by default.

Interface Configuration (VLAN) mode

Enable DHCP Relay using the ip helper enable command. Use the global 

configuration command ip dhcp relay information option command to 

enable processing of DHCP circuit ID and remote agent ID options. DHCP 

replies are checked by default. The network administrator should ensure that 

only one switch in the path between the DHCP client and server processes 

DHCP information options.

The following example enables relay information check on the interface: 

console(config)#interface vlan 10

console(config-if-vlan10)#ip dhcp relay information check

Use the ip dhcp relay information option command in Global Configuration 

mode to enable the circuit ID option and remote agent ID mode for 

BootP/DHCP Relay on the system (also called option 82). Use the no form of 

the command to disable the circuit ID option and remote agent ID mode for 

BootP/DHCP Relay.

ip dhcp relay information option
no ip dhcp relay information option

none

(Optional) Disables the command function. 

2CSPC4.X8100-SWUM102.book  Page 1045  Friday, March 15, 2013  8:56 AM