SONET ring map generation method and system

Details SONET ring map generation method and system SONET ring map generation method and system

2005-12-06

2005-12-06

Patel, Ajit (Department: 2661)

Multiplex communications

Fault recovery

Bypass an inoperative station

C370S221000, C370S242000, C370S258000

Reexamination Certificate

active

06973028

ABSTRACT:
A method for generating a ring map for a bi-directional line switched ring. The method includes identifying a change in a provisioned bi-directional line switched ring and generating a ring map for both directions in the ring at a node of the ring. The generated ring maps are compared to determine if the change in the ring is a result of a link failure or a node change and the node's ring map is updated if there was a node change in the ring.

REFERENCES:
patent: 5412652 (1995-05-01), Lu
patent: 5537393 (1996-07-01), Shioda et al.
patent: 5805568 (1998-09-01), Shinbashi
patent: 6377374 (2002-04-01), Davis et al.
patent: 6456587 (2002-09-01), Taniguchi
patent: 6614754 (2003-09-01), Usuba et al.
patent: 6850483 (2005-02-01), Semaan
RFC 2328 “OSPF Version 2” Ascent Communications, Apr. 1998, http://www.cls.ohio-state.edu/cgi-bin/rfc/rfc2328.html, 171 pages.
RFC 2370 “Internet RFC/STD/FYI/BCP Archives”, http://www.landfield.com/rfcs/rfc2370.html, 11 pages.

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