US 6,982,951 B2
Method for selecting a restoration path in a mesh network
Robert Duncan Doverspike, Tinton Falls, N.J. (US); Charles Robert Kalmanek Jr., Short Hills, N.J. (US); and Guangzhi Li, Harrison, N.J. (US)
Assigned to AT&T Corp., New York, N.Y. (US)
Filed on Jul. 19, 2001, as Appl. No. 9/909,102.
Claims priority of provisional application 60/257029, filed on Dec. 21, 2000.
Prior Publication US 2002/0097671 A1, Jul. 25, 2002
Int. Cl. H04L 12/26 (2006.01)
U.S. Cl. 370—217 11 Claims
OG exemplary drawing
 
1. A method of operation of a source node for selecting a restoration path in a mesh telecommunication network having a plurality of nodes comprising the steps of:
sending a first message along a service path to a destination node;
receiving, in response to the first message, a second message from the destination node via a return path, the second message containing an array storing a restoration link capacity for each link in the return path not in the service path wherein at least some of the nodes in the return path update the array upon receipt of the second message;
selecting a restoration path through the network from the source node to the destination node using the array; and
reserving resources for the restoration path in the network.