Method and apparatus for optimization of redundant link usage

• Main Authors: SOETEMANS, JOSEPH, LABONTE, JEAN, FRIESEN, LARRY, PIKE, DION
• Format: Patent
• Language: English; French; German
• Published: 02.11.2011
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; SELECTING; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The present invention comprises a method and apparatus for optimizing redundant link usage so as to allow a portion of the wasted bandwidth in a redundant link system to be utilized for additional data traffic without compromising the ability of the system to respond to and correct for a failure of a link. In one embodiment, two independent, individually addressable links are established between to endpoints. One of the links is selected as a nominal communication path, and the other as a standby communication path. Data traffic between the endpoints is divided into path independent traffic and path dependent traffic. The path independent traffic is sent via the nominal communication path, while the path dependent data is sent via the nominal communication path or the standby path, in accordance with the dependence of the traffic. In another embodiment, the nominal communication path and standby communication path each comprise a time sensitive path and a normal path. Critical time sensitive traffic is sent via the nominal and standby time sensitive paths, while normal traffic is sent via the nominal normal path, and non-critical traffic is sent via the standby normal path.