C613-50631-01 Rev A Command Reference for IE340 Series 2565
AlliedWare Plus™ Operating System - Version 5.5.3-0.x
DHCP SNOOPING COMMANDS
IP
DHCP SNOOPING AGENT-OPTION CIRCUIT-ID VLANTRIPLET
ip dhcp snooping agent-option circuit-id
vlantriplet
Overview Use this command to specify the Circuit ID sub-option of the DHCP Relay Agent
Option 82 field as the VLAN ID and port number. The Circuit ID specifies the switch
port and VLAN ID that the client-originated DHCP packet was received on.
Use the no variant of this command to set the Circuit ID to the default, the VLAN ID
and Ifindex (interface number).
Syntax
ip dhcp snooping agent-option circuit-id vlantriplet
no ip dhcp snooping agent-option circuit-id
Default By default, the Circuit ID is the VLAN ID and Ifindex (interface number).
Mode Interface Configuration for a VLAN interface.
Usage The Circuit ID sub-option is included in the DHCP Relay Agent Option 82 field of
forwarded client DHCP packets:
• DHCP snooping Option 82 information insertion is enabled (ip dhcp
snooping agent-option command; enabled by default), and
• DHCP snooping is enabled on the switch (service dhcp-snooping) and on the
VLAN to which the port belongs (ip dhcp snooping)
Examples To set the Circuit ID to vlantriplet for client DHCP packets received on vlan1,
use the commands:
awplus# configure terminal
awplus(config)# interface vlan1
awplus(config-if)# ip dhcp snooping agent-option circuit-id
vlantriplet
To return the Circuit ID format to the default for vlan1, use the commands:
awplus# configure terminal
awplus(config)# interface vlan1
awplus(config-if)# no ip dhcp snooping agent-option circuit-id
Related
commands
ip dhcp snooping agent-option
ip dhcp snooping agent-option remote-id
show ip dhcp snooping
show ip dhcp snooping agent-option
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