Performing Failover in a Redundancy Group

摘要

A method, system, and computer program product for performing failover in a redundancy group, where the redundancy group comprises a plurality of routers including an active router and a standby router, the failover being characterized by zero black hole or significantly reduced black hole conditions versus a conventional failover system. The method comprises the steps of: receiving an incoming message at a switch; sending a request of identification to the plurality of routers to identify a current active router, where the current active router represents a virtual router of the redundancy group; and in response to receiving a reply containing an identification from the current active router within a predetermined time, forwarding the incoming message to the current active router.

主权项

1. A method for performing failover in a redundancy group, wherein the redundancy group comprises a plurality of routers including a current active router and a standby router, the method comprising the steps of:
a switch receiving an incoming message; sending a request of identification to the plurality of routers to identify a current active router, wherein the current active router represents a virtual router of the redundancy group; and in response to receiving a reply containing an identification from the current active router within a predetermined time, forwarding the incoming message to the current active router.