Distributed protection switching

Details Distributed protection switching Distributed protection switching

2007-12-25

2007-12-25

Chan, Wing (Department: 2616)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S242000

Reexamination Certificate

active

10600184

ABSTRACT:
A system for responding to failures of connections in a network. In one embodiment, there is a system for responding to destination failures involving SPVx (switched-permanent virtual circuit) connections includes a primary source node. The system includes a primary source switch for producing an SPVx connection, the primary source node in communication with the primary source switch. The system includes a primary destination node. The system includes 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. The system includes an alternate destination node. The primary destination switch redirects 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 is 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. A method for responding to failures of connections in a network.

REFERENCES:
patent: 4452248 (1984-06-01), Keller, Jr.
patent: 5548639 (1996-08-01), Ogura et al.
patent: 6215765 (2001-04-01), McAllister et al.
patent: 6272107 (2001-08-01), Rochberger et al.
patent: 6353594 (2002-03-01), Tooker et al.
patent: 6643254 (2003-11-01), Kajitani et al.
patent: 6661773 (2003-12-01), Pelissier et al.
patent: 6810009 (2004-10-01), Itoi
patent: 6990068 (2006-01-01), Saleh et al.
patent: 7093027 (2006-08-01), Shabtay et al.
patent: 2001/0010681 (2001-08-01), McAllister et al.
patent: 2003/0179700 (2003-09-01), Saleh et al.
patent: 0 961 518 (1999-12-01), None
Balakrishnan R. et al., “Scalable Robust Control Plane for Broadband Networks: Network operators can scale their existing PVC-based ATM networks to very large sizes by migrating to SPVC, and can offer non-stop routing and switching services,” Alcatel Telecommunications Review, Alcatel, Paris Cedex, FR, pp. 1-7, (Jul. 2002).

Affiliated with

Also associated with

Rating

Distributed protection switching does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Distributed protection switching, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed protection switching will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3888654