Method of protecting traffic in a mesh network

Details Method of protecting traffic in a mesh network Method of protecting traffic in a mesh network

2005-02-08

2005-02-08

Olms, Douglas (Department: 2661)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S406000, C370S395710

Reexamination Certificate

active

06853641

ABSTRACT:
Method and apparatus for protection of traffic in a mesh network are disclosed. A source node sends duplicate copies of data packets of the protected traffic on physically diverse paths through the network. The data packets include a sequence number for determining their position in the protected traffic. A destination node receives the data packets from the paths, selects the next data packet in the sequence and transfers that packet to a receiving queue, while duplicate packets are discarded, and later packets in the sequence are held in a holding queue for future selection. The method does not require a synchronization function between the paths to perform a switchover in the event of a fault, and therefore the method is simple to implement. The method is also scalable to provide multiple physically diverse paths in order to achieve greater degrees of protection.

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Andreas Iselt, “A New Synchronization Algorithm for Hitless Protection Switching in ATM Networks”, Munich University of Technology, Institute of Communication Networks, Munchen, Germany; pp 370 to 376.

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