Brocade Communications Systems Brocade ICX 6650 6650 User Manual

DHCP relay agent information

Viewing information about DHCP option 82 processing

Use the commands in this section to view information about DHCP option 82 processing.

Viewing the circuit ID, remote ID, and forwarding policy

Use the show ip dhcp relay information command to obtain information about the circuit ID, remote 
ID, and forwarding policy for DHCP option 82. The following shows an example output.

Syntax: show ip dhcp relay information

Viewing the ports on which DHCP option 82 is disabled

Use the following command to refer which port in a DHCP snooping VLAN has DHCP Option 82 
disabled.

Syntax: show ip dhcp snooping vlan vlan-id

TABLE 72

Output for the ip dhcp relay information command

Field

Description

Circuit-ID

The agent circuit ID format:

•

vlan-mod-port – The default circuit ID format.

Remote-ID

The remote ID format. This field displays mac, which is the default 
remote ID format.

Policy

How the Brocade switch processes relay agent information it receives in 
DHCP messages:

•

drop – drops the relay agent information

•

keep – keeps the relay agent information

•

replace – replaces the relay agent information with its own

TABLE 73

Output for the show ip dhcp snooping vlan command

Field

Description

IP DHCP snooping VLAN vlan-id

The DHCP snooping and DHCP option 82 status for a VLAN:

•

Enabled

•

Disabled

Trusted Ports

A list of trusted ports in the VLAN.

Brocade# show ip dhcp relay information
Relay Information: Format: Circuit-ID : vlan-mod-port
                            Remote-ID : mac
                               Policy : keep

Brocade# show ip dhcp snooping vlan 1
IP DHCP snooping VLAN 1: Enabled
  Trusted Ports :   ethe 1/1/3
  Untrusted Ports : ethe 1/1/1 to 1/1/2 ethe 1/1/4 to 1/1/24
  Relay Info. disabled Ports: ethe 1/1/10