Alcatel-Lucent 6850-48 参照ガイド

DHCP Relay Commands

page 36-16

OmniSwitch CLI Reference Guide

Enables or disables the DHCP relay agent information option (Option-82) feature. When this feature is 
enabled, local relay agent information is inserted into client DHCP packets when the agent forwards these 
packets to a DHCP server. 

ip helper agent-information {enable | disable}

Enables the relay agent Option-82 feature for the switch.

Disables the relay agent Option-82 feature for the switch.

By default, this feature is disabled on the switch.

OmniSwitch 6400, 6850, 6855, 9000, 9000E

• This command enables the DHCP Option-82 feature for the entire switch; it is not configurable on a 

per-VLAN basis.

• When the DHCP Option-82 feature is enabled, DHCP Snooping is not available. These two features are 

mutually exclusive. 

• When the relay agent receives a DHCP packet that already contains the Option-82 field, it will process 

the packet based on the agent information policy configured for the switch. This policy is configured 
using the ip help agent-information policy command.

-> ip helper agent-information enable

-> ip helper agent-information disable

Release 6.1.2; command was introduced.

Configures a policy to determine how the relay agent handles DHCP 
packets that already contain the Option-82 field.

Displays current DHCP Relay configuration information.

Displays DHCP Relay statistics, including the number of client packets 
received and transmitted to the DHCP server and packets dropped due to 
forward delay time and maximum hops violations.