Users Guide

Table Of Contents
Parameters
vrf vrf-name (Optional) Enter the keyword vrf and then the name of the VRF through which
the host address can be reached.
ipv6address Specify the DHCPv6 server address in the A::B format.
Defaults Disabled
Command Mode INTERFACE
Usage
Information
Use this command on interfaces to which DHCPv6 clients connect, to forward the packets between
IPv6 clients and a DHCPv6 server. After you configure an IPv6 helper address, the address forwards
UDP broadcasts from IPv6 clients to the DHCPv6 server. You can configure multiple helper addresses on
an interface by repeating the same command for each DHCPv6 server address. The no version of this
command deletes the IPv6 helper address.
Example
OS10(config)# interface ethernet 1/1/22
OS10(conf-if-eth1/1/22)# ipv6 helper-address 2001:db8:0:1:1:1:1:1 vrf
blue
Supported
Releases
10.4.1.0 or later
ip dhcp-relay information-option
Configures the system to enable the remote-id string in Option-82.
Syntax
ip dhcp-relay information-option
Parameters None.
Default Not configured
Command Mode CONFIGURATION, INTERFACE CONFIGURATION
Usage
Information
By default, Option-82 is enabled Globally. When Option-82 is enabled Globally, the relay agent adds the
client information to the packet and sends it to the server. When Option-82 is disabled Globally, the client
packets are sent to the server without Option-82 information. When both Global and the Interface level
Option-82 configurations are present, the configuration to disable Option-82 takes precedence.
The following table shows the Option-82 status depending on the global and interface level
configurations:
Table 39. Option-82 status
Global Level Interface Level Option-82 status
Enable Enable Adds Option-82 information to
the packet.
Enable Disable Does not add Option-82
information to the packet.
Disable Enable Does not add Option-82
information to the packet.
Disable Disable Does not add Option-82
information to the packet.
Example
OS10(config)# ip dhcp-relay information-option
Supported
Releases
10.5.2.0 or later
System management 299