Patent ID: 7313087
Filing Date: 2007-12-25
Classification: H04L,H04Q

Abstract:
1. A system for responding to destination failures involving SPVx (switched-permanent virtual circuit) connections comprising: a primary source node; a primary source switch for producing an SPVx connection, the primary source node in communication with the primary source switch; a primary destination node; a primary destination switch for receiving the SPVx connection, the primary destination node in communication with the primary destination switch, the connection following a primary path between the primary source node and the primary destination node; an alternate destination node, the primary destination switch redirecting automatically the primary connection to the alternate destination node along an alternate path when the primary destination switch detects a failure of the primary path, the alternate path formed by the primary source node and the alternate destination node only after the primary path experiences a failure, the primary destination switch releases the SPVx connection after there is a fault detected on the primary path, the primary source switch makes multiple attempts to reestablish the SPVx connection with the primary destination node after a failure is detected on the primary path, the primary source switch redirects automatically the SPVx connection to the alternate destination node, the primary source switch re-establishes the SPVx connection to the primary destination node when the failure condition clears.