Configuring DHCP Relay for an interface

Configure the DHCP relay behavior on the interface.

Before you begin

Change the VRF instance as required to configure DHCP Relay for an interface on a specific VRF instance. Not all parameters are configurable on non-default VRFs.

About this task

You can configure only one relay for a VLAN, regardless of how many addresses are configured on that VLAN. The default address is the smallest address configured. If the relay is a VRRP address, the default value is the first VRRP address configured.

You can modify the DHCP Relay configuration for a brouter port through the Edit > Port > IPv6 navigation path, and for a VLAN through the VLAN > VLANs > Basic > IPv6 navigation path. This procedure uses the main IPv6 navigation path where you can configure both types of interfaces.

Procedure

In the navigation tree, expand the following folders: Configuration > IPv6.
Click DHCP Relay.
Click the Interface tab.
Click Insert.
Beside the IfIndex field, click Port or Vlan.
Select a port or VLAN, and then click OK.
Click Insert.

Interface field descriptions

Use the data in the following table to use the Interface tab.


Name	Description
IfIndex	Shows the unique value to identify an IPv6 interface. For the brouter port, the value is the ifindex of the port and, in the case of the VLAN, the value is the ifindex of the VLAN.
MaxHop	Specifies the maximum number of hops a DHCP packet can take from the DHCP client to the DHCP server. The default is 32.
RemoteIdEnabled	Enables the relay agent to add information about the relay to DHCPv6 messages before relaying the messages to the DHCP server. The default is disabled (clear or false).