Basic VRRP on a VLAN
End stations are often configured with a static default gateway IP address. Loss of the default gateway router can have catastrophic results. Virtual Router Redundancy Protocol (VRRP), RFC 2338, is designed to eliminate this single point of failure in a routed environment by introducing the concept of a virtual IP address (transparent to users) shared between two or more routers connecting the common subnet to the enterprise network. With the virtual IP address as the default gateway on end hosts, VRRP provides a dynamic default gateway redundancy in the event of a failure.
See also
