Assigning an auto-generated link-local IPv6 address for a VRRPv3 cluster

A virtual link-local IPv6 address can be auto-generated and assigned as the virtual IPv6 address of a VRRPv3 session.
The default VRRPv3 implementation allows only the link-local address that is configured on a physical interface to be used as the virtual IPv6 address of a VRRPv3 session. This limits configuring a link-local address for each VRRP instance on the same physical interface because there can be only one link-local address per physical interface. To auto-generate and assign a virtual link-local IPv6 address as the virtual IPv6 address of a VRRPv3 cluster, use the following steps on either an IPv6 VRRPv3 owner or backup device.
  1. From privileged EXEC mode, enter global configuration mode. 
    device# configure terminal
  2. Globally enable IPv6 VRRP. 
    device(config)# ipv6 router vrrp
  3. Configure the Ethernet interface link for the owner device. 
    device(config)# interface ve 3
  4. Configure the global IPv6 address of the interface. 
    device(config-vif-3)# ipv6 address fd3b::3/64
  5. Assign the device to virtual router ID (VRID) 2. 
    device(config-vif-3)# ipv6 vrrp vrid 2
    Note: You can assign a VRID number in the range of 1 through 255.
  6. Designate this router as a VRRPv3 owner device. 
    device(config-vif-3-vrid-2)# owner
  7. Automatically generate the IPv6 link-local address for the VRID for use in the local network. 
    device(config-vif-3-vrid-2)# ipv6-address auto-gen-link-local
  8. Enable the VRRP session. 
    device(config-vif-3-vrid-2)# activate

The following example shows the auto-generation of a virtual link-local IPv6 address and its allocation as the virtual IPv6 address of a VRRPv3 session on an IPv6 VRRPv3 owner router. 

device# configure terminal
device(config)# ipv6 router vrrp
device(config)# interface ve 3
device(config-vif-3)# ipv6 address fd3b::3/64
device(config-vif-3)# ipv6 vrrp vrid 2
device(config-vif-3-vrid-2)# owner
device(config-vif-3-vrid-2)# ipv6-address auto-gen-link-local
device(config-vif-3-vrid-2)# activate
Parent topic: Automatic Generation of a Virtual Link-local Address for VRRPv3