METHOD FOR UPDATING THE STATE OF PROTECTED TUNNEL AFTER FAST REROUTE SWITCH

摘要

A method for updating the state of a protected tunnel after a faster reroute switch comprises the following steps: a corresponding backup tunnel is determined by transporting a message including a local repair node router identity information, a convergence node router identity information, a backup tunnel identity information and a backup tunnel label switching router identity information, then the fast reroute switch will be informed by the local repair node router identity information and a convergence node router identity information transmitted in the backup tunnel, and the state of the protected tunnel is updated. Through the method, the state of the protected tunnel is updated without transmitting the protocol message of the protected tunnel along the backup tunnel, and the congestion possibility of the backup tunnel is reduced.