Users Guide

If the interface is part of VLAN, both VLAN and interface-name are used to update the default interface-
id description.
● If VLAN has port channel, then default description is vlan-port_channel. (physical-port will not
be present).
● If VLAN has physical port, then default description is vlan-physicalport.
● If vn has member port, then default description is vn-name only..
IIf custom description is configured, then custom value is used as interface-id description.
NOTE: This command is restricted to the sysadmin and netadmin user roles.
Example
OS10(conf-if-eth1/1/1)# ipv6 dhcp-relay interface-id ?
description Add customized string to interface-id
OS10(conf-if-eth1/1/1)# ipv6 dhcp-relay interface-id description?
String User-defined value (Max: 32 chars, Except '-')
Supported
Releases
10.5.2.1 or later
show ip dhcp-relay
Displays the DHCP relay information corresponding to the client interfaces.
Syntax
show ip dhcp-relay interface [vrf vrf-name] {ethernet slot/port | port-
channel port-channel-id | vlan vlan-id | virtual-network vn-id}
Parameters
● vrf vrf-name - Enter vrf then the name of the VRF.
● ethernet slot/port — Displays information corresponding to the ethernet interface that you
specify.
● port-channel port-channel-id — Displays information corresponding to the port-channel
that you specify.
● vlan vlan-id — Displays information corresponding to the VLAN interface that you specify.
● virtual-network vn-id — Displays information corresponding to the virtual network that you
specify.
Defaults None
Command Mode EXEC
Usage
Information
This command displays the Global level status of Option-82 as well as the Interface level Option-82
status.
The show ip dhcp-relay interface command displays the relay information corresponding to
the requested interface enabled with the helper address. If you enable the Option-82 configuration,
the Option-82 status appears as Enabled(Default). If you disable the Option-82 configuration, the
Option-82 status appears as Disabled.
The command displays the following:
● Per-interface giaddr field value.
● Per-interface sub-option 5 field value.
● Per-interface sub-option 151 field value.
● Per-interface sub-option 11 field value.
● Configured list of the DHCP server IP addresses with the reachable VRF name.
show ip dhcp relay interface interface – This command displays the relay information for
the requested interface enabled with the helper address.
show ip dhcp relay vrf vrf-name – This command displays the relay information for all the
interfaces enabled with the helper address and associated with the vrf_name.
● If the Giaddr = 0, it displays an additional message in the GiAddr field None - Relay cannot
work without gateway IP address
308 System management