A computer network employs a fault-tolerant or redundant switch architecture. The network includes redundant data paths coupling end nodes and switches. Fault-tolerant repeaters (FTRs) can be stand-alone devices or can be incorporated into the switches. Using error detection, the FTR checks to see if...http://www.google.fr/patents/US6925578?utm_source=gb-gplus-shareBrevet US6925578 - Fault-tolerant switch architecture