Cisco Catalyst 3550

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Catalyst 3550 Multilayer Switch Command Reference
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Chapter 2 Catalyst 3550 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 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, by default, the remote-ID suboption is the switch MAC address.
You can use this command to configure either the switch hostname or a string of ASCII characters (but
no spaces) to be the remote ID.
Note If the hostname exceeds 63 characters, it is 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.
string ASCII-string Specify a remote ID, using up to 63 ASCII characters (no
spaces).
hostname Specify the switch hostname as the remote ID.
Release Modification
12.2(25)SEE This command was introduced.