dhcp snooping information strategy

Use dhcp snooping information strategy to configure the handling strategy for Option 82 in request messages.

Use undo dhcp snooping information strategy to restore the default.

Syntax

dhcp snooping information strategy { drop | keep | replace }

undo dhcp snooping information strategy

Default

The handling strategy for Option 82 in request messages is replace.

Views

Layer 2 Ethernet interface view, Layer 2 aggregate interface view

Predefined user roles

network-admin

Parameters

drop: Drops DHCP messages that contain Option 82.

keep: Keeps the original Option 82 intact.

replace: Replaces the original Option 82 with the configured Option 82.

Usage guidelines

This command takes effect only on DHCP requests that contain Option 82.

When enabled to support Option 82, the DHCP relay agent always adds Option 82 into DHCP requests that do not contain Option 82 before forwarding the requests to the DHCP.

Examples

# Specify the handling strategy for Option 82 in request messages as keep.

<Sysname> system-view
[Sysname] interface Ten-GigabitEthernet1/0/1
[Sysname-Ten-GigabitEthernet1/0/1] dhcp snooping information enable
[Sysname-Ten-GigabitEthernet1/0/1] dhcp snooping information strategy keep

Related commands

• dhcp snooping information circuit-id

• dhcp snooping information remote-id