VRRP
Virtual Router Redundancy Protocol
VRRP is a protocol to provide redundancy in statically defined routed networks, rather than in dynamically defined networks, such as RIP and OSPF. VRRP is an election protocol that dynamically assigns responsibility for one or more virtual router(s) to the VRRP router(s), allowing several routers on a multiaccess link to utilize the same virtual IP address. A VRRP router is configured to run the VRRP protocol in conjunction with one or more other routers.