Configure a DHCP Relay Forwarding Path
Configure a forwarding path to specify the relay agent address and the DHCP server address to which to forward packets.
To use DHCP Relay for IPv6, you must configure at least one forwarding path and enable the relay on one interface.
Before you begin
Change the VRF instance as required to configure a DHCP Relay forwarding path on a specific VRF instance. Not all parameters are configurable on non-default VRFs.
About this task
The relay agent can use the IPv6 address of the interface or the VRRP global address linked to that interface. The relay forwards the DHCP messages only if VRRP is in the Master state, otherwise the relay discards the messages.
You can configure only one relay agent on an interface. If you need to change the relay agent, you must delete all the forwarding paths with the old relay agent, and then configure the new relay agent.
For scaling information on DHCP Relay forwarding paths, see Fabric Engine Release Notes.
Procedure
- In the navigation tree, expand .
- Select DHCP Relay.
- Select the Forward Path tab.
- Select Insert.
- In the AgentAddr field, type the address of the input interface that forwards the packets.
- In the ServerAddr field, type the address of the DHCP server.
- Select Enabled.
- Select Insert.
Forward Path field descriptions
Use the data in the following table to use the Forward Path tab.
Name | Description |
|---|---|
AgentAddr | Specifies the IP address of the input interface (relay agent) on which the DHCP request packets are received for forwarding. This address is the IPv6 or VRRP global address of either a brouter port or a VLAN for which forwarding is enabled. |
ServerAddr | Specifies the IP address of the DHCP server. The request is unicast to the server address. |
Enabled | Enables DHCP Relay for the system. The default is disabled (clear). |