The present invention provides layer one, two and three (L1/L2/L3) Integration and L1 cut-through path utilization in an apparatus and method of fault recovery. A switch combines an IP router with L2 capabilities, and an L1 cross connect (optical or electrical). A network of such switches is configured...http://www.google.es/patents/US6530032?utm_source=gb-gplus-sharePatente US6530032 - Network fault recovery method and apparatus
