Back-up restoration technique for sonet/sdh rings

Details Back-up restoration technique for sonet/sdh rings Back-up restoration technique for sonet/sdh rings

H - Electricity

04

L

H04L 12/437 (2006.01) H04J 3/08 (2006.01) H04L 29/14 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2280288

A restoration network architecture (100) includes both service and protection SONET/SDH rings (15, 17) as well as a mesh network (25) including point-to-point paths (26 1-26 2). Monitoring Equipment (28, 30) monitor the status of service links (14 1-14 4) and protection links (16 1-16 4) in the service and protection rings, respectively, along with the status of the point-to point links in the mesh network. Upon detecting a failure of one of the service links and point-to-point links, an Operations Systems Data Server (32) establishes a restoration path based on the available protection links and available point-to-point links. Traffic is then restored on such the restoration path. In this way, a failure in the service ring can be restored in the mesh network while a failure in the mesh network can be restored in the protection ring.

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