Method and apparatus for fast reconnection of permanent virtual circuits in a frame relay network

摘要

Rapid reestablishment of permanent virtual circuits (PVCs 151-156) between frame relay switches 121-124 in a frame relay (10) is accomplished by periodically polling the switches by a configuration controller (18) via an out-of-band connection to obtain PVC information from the switches. Should a fault occur, the fault is isolated and mitigated. Thereafter, the configuration controller (18) downloads the stored PVC information to the switches in parallel via the out-of-band connection to enable the switches to re-establish the PVCs quickly, rather than wait to do so via an in-band connection .