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PowerConnect B-Series FCX Configuration Guide 1359
53-1002266-01
DHCP relay agent information (DHCP Option 82)
39
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 234 Output for the ip dhcp relay information command
This field... Displays
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 Dell 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 235 Output for the show ip dhcp snooping vlan command
This field... Displays
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.
Untrusted Ports A list of untrusted ports in the VLAN.
Relay Info. disabled Ports Ports on which DHCP option 82 was disabled.
PowerConnect#show ip dhcp relay information
Relay Information: Format: Circuit-ID : vlan-mod-port
Remote-ID : mac
Policy : keep
PowerConnect#show ip dhcp snooping vlan 1
IP DHCP snooping VLAN 1: Enabled
Trusted Ports : ethe 3
Untrusted Ports : ethe 1 to 2 ethe 4 to 24
Relay Info. disabled Ports: ethe 10