Patent ID: 8264952
Filing Date: 2012-09-11
Classification: H04J,H04L

Abstract:
1. A method, said method comprising: detecting a failure at a first network node in a packet transport network comprising a bidirectional ring network; communicating said failure along said ring network using an automatic protection switching protocol; at said first node or at a second node adjacent to said failure, activating a protection switch-over for at least one protected traffic stream by redirecting said traffic stream into the reverse direction of said ring network; if at last network node along said ring network that is not isolated by said failure from an entry node for said traffic stream performs either an add function or a drop & continue function for said traffic stream, selecting said last network node, otherwise selecting last network node along said ring network that is not isolated by said failure from said entry node and that performs either art add function or a drop & continue function for said traffic stream; and squelching said traffic stream by said selected network node, and wherein said squelching of said traffic stream is performed for point-to-point connections at the entry node for said connection and for point-to-multipoint connections at the last drop & continue node along the ring network that is not isolated from the entry node by said failure.