dhcp relay trust option82

Function

The dhcp relay trust option82 command enables Option 82 on the DHCP relay agent.

The undo dhcp relay trust option82 command disables Option 82 on the DHCP relay agent.

By default, Option 82 is enabled on the DHCP relay agent.

Format

dhcp relay trust option82

undo dhcp relay trust option82

Parameters

None

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

This command is used on the DHCP relay agent to enable the Option 82 function. After receiving a DHCP packet that carries the Option 82 field but the giaddr field of the packet is 0, the DHCP relay agent processes the packet by default. Using the undo dhcp relay trust option82 command, the DHCP relay agent discards the packet.

Prerequisites

DHCP has been enabled globally by using the dhcp enable command.

Example

# Enable Option 82 trusted of the DHCP relay agent.

<HUAWEI> system-view
[HUAWEI] dhcp enable
[HUAWEI] dhcp relay trust option82