Enabling an IPv4 VRRPv3 Backup Device

VRRPv3 supports IPv4 sessions as well as IPv6 sessions. To configure a VRRPv3 session for IPv4, assign a virtual router group with the VRRP version set to 3. This task is performed on any device that is designated as an IPv4 backup VRRPv3 device. For each VRRP virtual routing instance, there is one master device and all other devices are backups. Repeat this task on all devices that are to be designated as backup devices.

  1. On a device designated as a backup VRRP device, from privileged EXEC mode, enter global configuration mode by issuing the configure terminal command. 
    device# configure terminal
  2. Globally enable VRRP. 
    device(config)# router vrrp
  3. Configure the Ethernet interface. 
    device(config)# interface ethernet 1/1/5
  4. Configure the IP address of the interface. All devices configured for the same virtual router ID (VRID) must be on the same subnet. 
    device(config-if-e1000-1/1/5)# ip address 10.53.5.3/24
  5. Assign the same VRID as the VRID used by the owner device. 
    device(config-if-e1000-1/1/5)# ip vrrp vrid 1
    Note: You can assign a VRID number in the range of 1 through 255.
  6. Designate this router as a backup VRRP device. 
    device(config-if-e1000-1/1/5-vrid-1)# backup priority 110
    While configuring a backup device, you can set a priority that is used when a master VRRP device goes offline. The backup device with the highest priority will assume the role of master device.
  7. Set the VRRP version to 3 to indicate that this is VRRPv3 session for IPv4. 
    device(config-if-e1000-1/1/5-vrid-1)# version 3
  8. Configure the IP address of the VRID. 
    device(config-if-e1000-1/1/5-vrid-1)# ip-address 10.53.5.1
    The VRID IP address is the same virtual IP address that you used for the VRRP owner device.
  9. Enable the VRRP session. 
    device(config-if-e1000-1/1/5-vrid-1)# activate
VRRP router 1 for this interface is activating

The following example configures a VRRP owner device. 

device# configure terminal
device(config)# router vrrp
device(config)# interface ethernet 1/1/5
device(config-if-e1000-1/1/5)# ip address 10.53.5.3/24
device(config-if-e1000-1/1/5)# ip vrrp vrid 1
device(config-if-e1000-1/1/5-vrid-1)# backup priority 110
device(config-if-e1000-1/1/5-vrid-1)# version 3
device(config-if-e1000-1/1/5-vrid-1)# ip-address 10.53.5.1
device(config-if-e1000-1/1/5-vrid-1)# activate
VRRP router 1 for this interface is activating
Parent topic: VRRPv3