Distance vector routing protocols such as the Routing Information Protocol fail to rapidly reconfigure to use redundant links. By modifying the outgoing advertised hop count upon detecting a failure in a connection for which a backup or redundant connection exists, incoming traffic is diverted to the...http://www.google.de/patents/US20030202473?utm_source=gb-gplus-sharePatent US20030202473 - Traffic network flow control using dynamically modified metrics for redundancy connections
