User Manual

Table Of Contents
[Initial value]
None
[Input mode]
global configuration mode
[Description]
Enables forwarding of DHCP packets to which Option 82 information has been added at an untrusted port.
If this command is executed with the "no" syntax, the setting returns to the default.
[Example]
This enables forwarding of DHCP packets to which Option 82 information has been added at an untrusted port.
SWP2(config)#ip dhcp snooping information option allow-untrusted
6.5.7 Option 82 Remote-ID settings
[Syntax]
ip dhcp snooping information option format remote-id string
remoteid
ip dhcp snooping information option format remote-id hostname
no ip dhcp snooping information option format remote-id
[Keyword]
string : Specifies the REMOTEID text string
hostname : Sets the REMOTEID host name
[Parameter]
remoteid : Desired text string (single-byte alphanumeric characters and single-byte symbols, 63 characters or
less)
[Initial value]
None
[Input mode]
interface mode
[Description]
Lets you add a desired text string to an Option 82 Remote-ID.
Note that "?" cannot be included in the desired text string.
If this command is executed with the "no" syntax, this unit’s MAC address is added to the Remote-ID.
[Note]
This command can be specified only for VLAN interfaces.
[Example]
This lets you add desired characters to a Remote-ID.
SWP2(config)#interface vlan1
SWP2(config-if)#ip dhcp snooping information option format remote-id pc1
6.5.8 Option 82 Circuit-ID settings
[Syntax]
ip dhcp snooping information option format-type circuit-id vlan-port
ip
dhcp snooping information option format-type circuit-id string string
ip dhcp snooping information option format-type circuit-id vlan-ifindex
no ip dhcp snooping information option format-type circuit-id
[Keyword]
vlan-port : Use Circuit-ID type 0 VLAN ID, Module (stack ID), port number
string : Use Circuit-ID type 1 desired text string
Command Reference | Layer 2 functions | 221