Configuration procedure

1. Enter system view.

system-view

N/A

2. Enter interface view.

interface interface-type interface-number

N/A

3. Enable the relay agent to support Option 82.

dhcp relay information enable

Disabled by default.

4. Configure the handling strategy for requesting messages containing Option 82.

dhcp relay information strategy { drop | keep | replace }

Optional.

replace by default.

5. Configure non-user-defined Option 82.

• Configure the padding format for Option 82:dhcp relay information format { normal | verbose [ node-identifier { mac | sysname | user-defined node-identifier } ] }

• Configure the code type for the circuit ID sub-option:
  dhcp relay information circuit-id format-type { ascii | hex }

• Configure the code type for the remote ID sub-option:dhcp relay information remote-id format-type { ascii | hex }

Optional.

By default:

• The padding format for Option 82 is normal.

• The code type for the circuit ID sub-option depends on the padding format of Option 82. Each field has its own code type.

• The code type for the remote ID sub-option is hex.

The code type configurations for the circuit ID sub-option and remote ID sub-option apply to non-user-defined Option 82 only.

6. Configure user-defined Option 82.

• Configure the padding content for the circuit ID sub-option:
  dhcp relay information circuit-id string circuit-id

• Configure the padding content for the remote ID sub-option:
  dhcp relay information remote-id string { remote-id | sysname }

Optional.

By default, the padding content depends on the padding format of Option 82.