Sdh protection optimized for data networking

Details Sdh protection optimized for data networking Sdh protection optimized for data networking

H - Electricity

04

L

H04L 12/56 (2006.01) H04J 3/08 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2284161

A protection method for providing integrity of transport of a data packet stream over a plurality of synchronous digital channels each comprising a virtual container stream, the virtual container streams being virtually concatenated together is disclosed. Data packets from a data stream are mapped to a plurality of memory areas, from which the data packets are transferred to payloads of a plurality of virtual container streams which are carried over a synchronous digital network by a plurality of different routes, being either path connections or rings. Upon failure of a path or section, a receiving entity signals to a transmitting synchronous digital entity via conventional path or section termination signaling functions to alert the transmitting entity of a failure in a path or section. Upon receiving a path or ring failure signal, the transmitting entity gracefully degrades to offer a reduced bandwidth.

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