Fast flooding based fast convergence to recover from network failures

摘要

A method in a router for initiating fast flooding based fast convergence to recover from a network failure is disclosed. The method also starts with detecting a network failure. Responsive to the detected network failure, the router floods a layer 2 fast failure notification message out a set of one or more interfaces of the router. The fast failure notification message includes information that identifies the network failure and indicates to a router that receives the fast failure notification message to flood the fast failure notification message out its interfaces that are not blocked by a spanning tree protocol (STP) independently of updating its routing table to reflect the network failure. The method continues with the router updating a routing table to reflect the network failure.