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Catalyst 3750-X and 3560-X Switch Command Reference
OL-29704-01
Chapter 2 Catalyst 3750-X and 3560-X Switch Cisco IOS Commands
ip dhcp snooping information option format remote-id
ip dhcp snooping information option format remote-id
Use the ip dhcp snooping information option format remote-id global configuration command on the
switch stack or on a standalone switch to configure the option-82 remote-ID suboption. Use the no form
of this command to configure the default remote-ID suboption.
ip dhcp snooping information option format remote-id [string ASCII-string | hostname]
no ip dhcp snooping information option format remote-id
Syntax Description
Defaults The switch MAC address is the remote ID.
Command Modes Global configuration
Command History
Usage Guidelines You must globally enable DHCP snooping by using the ip dhcp snooping global configuration
command for any DHCP snooping configuration to take effect.
When the option-82 feature is enabled, the default remote-ID suboption is the switch MAC address. This
command allows you to configure either the switch hostname or a string of up to 63 ASCII characters
(but no spaces) to be the remote ID.
Note If the hostname exceeds 63 characters, it will be truncated to 63 characters in the remote-ID
configuration.
Examples This example shows how to configure the option- 82 remote-ID suboption:
Switch(config)# ip dhcp snooping information option format remote-id hostname
You can verify your settings by entering the show ip dhcp snooping user EXEC command.
Related Commands
string ASCII-string Specify a remote ID, using from 1 to 63 ASCII characters (no
spaces).
hostname Specify the switch hostname as the remote ID.
Release Modification
12.2(53)SE2 This command was introduced.
Command Description
ip dhcp snooping vlan information
option format-type circuit-id string
Configures the option-82 circuit-ID suboption.
show ip dhcp snooping Displays the DHCP snooping configuration.
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