US 7,613,135 B2
	System and method for routing packet traffic
Guangzhi Li, Kearny, N.J. (US); Robert Duncan Doverspike, Tinton Falls, N.J. (US); and Dongmei Wang, Kearny, N.J. (US)
Assigned to AT&T Intellectual Property I, L.P., Reno, Nev. (US)
Filed on Oct. 13, 2006, as Appl. No. 11/549,329.
Prior Publication US 2008/0089335 A1, Apr. 17, 2008
Int. Cl. H04L 12/28 (2006.01); H04J 3/26 (2006.01); H04L 12/42 (2006.01)

U.S. Cl. 370—258  [370/390; 370/392; 370/403; 370/432]

17 Claims

1. A computer-readable storage medium in a Network Management System (NMS), comprising computer instructions for assigning Internal Gateway Protocol (IGP) weights to a topology of communication links coupled to routing nodes in a Packet-Switched Network (PSN) to prevent multicast packet traffic and unicast packet traffic from occupying a common unidirectional communication link, wherein different weights are iteratively assigned to the routing nodes in a PSN ring depending on their relation to a source node being either in a clockwise direction or a counter-clockwise direction until all nodes on the PSN are an integral part of a graph.