Apparatus and method for providing a high availability network mechanish

摘要

A high availability network mechanism ( 100 ) is provided having a primary node ( 105 ) and at least one secondary node ( 120 ) utilizing Virtual Router Redundancy Protocol ("VRRP") compatible redundancy systems. The primary and secondary nodes ( 105 and 120 ) are associated with access routers ( 110 and 130 , respectively) that are associated with edge routers ( 115 and 130 , respectively). A virtual IP address is associated with the primary node ( 105 ) with a first cost assigned to the primary node ( 105 ). The same virtual IP address is associated with the secondary node ( 120 ) with a second cost assigned to the secondary node ( 120 ). A core IP network ( 135 ) utilizing an Open Shortest Path First ("OSPF") compatible redundancy system is accessible through the edge routers ( 115 and 130 ) such that the primary and secondary nodes ( 105 and 120 ) advertise the virtual IP address with different costs on the IP network ( 135 ).