TRAFFIC NETWORK FLOW CONTROL USING DYNAMICALLY MODIFIED METRICS FOR REDUNDANCY CONNECTIONS

摘要

Distance vector routing protocols such as the Routing Information Protocol fail to rapidly reconfigure to use redundant links. By modifying the outgoin g advertised hop count (31) upon detecting a failure in a connection (32) for which a backup or redundant connection exists, incoming traffic is diverted to the redundant or backup connection (33). An artificially high hop count (31) is advertised for a given port, and when a failure or loss of reachability occurs in a connection associated with that port (32), an advertisement of a lower hop count on the backup or redundant connection for the given port is triggered (33). This causes rapid rerouting of incoming traffic to the backu p or redundant connection.