Users Guide

VRRP 1393
This example configures two VRRP groups on each router. Router A is the
VRRP primary for the VRRP group with VRID 10 and the backup for VRID
20. Router B is the VRRP primary for VRID 20 and the backup for VRID 10.
If Router A fails, Router B will become the primary of VRID 10 and will use
the virtual IP address 192.168.10.1. Traffic from the clients configured to use
Router A as the default gateway will be handled by Router B.
To configure Router A:
1 Enable routing for the switch.
console#config
console(config)#ip routing
2 Create and configure the VLAN routing interface to use as the default
gateway for network clients. This example assumes all other routing
interfaces, such as the interface to the external network, have been
configured.
console(config)#interface vlan 10
console(config-if-vlan10)#ip address 192.168.10.1 255.255.255.0
console(config-if-vlan10)#exit
3 Enable VRRP for the switch.
console(config)#ip vrrp
4 Assign a virtual router ID to the VLAN routing interface for the first VRRP
group.
console(config)#interface vlan 10
console(config-if-vlan10)#vrrp 10
5 Specify the IP address that the virtual router function will use. This router
is the virtual IP address owner (because the routing interface has the same
IP address as the virtual IP address for the VRRP group), so the priority
value is 255.
console(config-if-vlan10)#vrrp 10 ip 192.168.10.1
6 Configure an optional description to help identify the VRRP group.
console(config-if-vlan10)#vrrp 10 description primary
7 Assign a virtual router ID to the VLAN routing interface for the second
VRRP group.
console(config-if-vlan10)#vrrp 20
8 Specify the IP address that the virtual router function will use.
console(config-if-vlan10)#vrrp 20 ip 192.168.10.2