Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2011-07-19
2011-07-19
Jagannathan, Melanie (Department: 2468)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S225000, C370S258000, C370S403000, C370S406000
Reexamination Certificate
active
07983150
ABSTRACT:
A method for communication over a bi-directional ring network includes provisioning a virtual private local area network service (VPLS) over the bi-directional ring network. The VPLS includes connection termination points provisioned respectively on a plurality of the nodes so as to connect each of the plurality of the nodes to a second network external to the ring network. As long as the nodes and spans are fully operational, one or more of the connection termination points are maintained in a deactivated state, so that no more than one of the connection termination points to the second network is active. The nodes exchange messages indicative of a failure associated with the bi-directional ring network, causing at least one of the deactivated connection termination points to be activated so as to maintain connectivity among the users of the VPLS without creating a loop in the VPLS via the second network.
REFERENCES:
patent: 4535785 (1985-08-01), van den Honert
patent: 4602624 (1986-07-01), Naples et al.
patent: 4628942 (1986-12-01), Sweeney et al.
patent: 4702254 (1987-10-01), Zabara
patent: 4867164 (1989-09-01), Zabara
patent: 5025807 (1991-06-01), Zabara
patent: 5159595 (1992-10-01), Flanagan et al.
patent: 5188104 (1993-02-01), Wernicke
patent: 5199430 (1993-04-01), Fang
patent: 5205285 (1993-04-01), Baker, Jr.
patent: 5215086 (1993-06-01), Terry, Jr.
patent: 5263480 (1993-11-01), Wernicke
patent: 5282468 (1994-02-01), Klepinski
patent: 5299569 (1994-04-01), Wernicke
patent: 5307353 (1994-04-01), Yamashita et al.
patent: 5321393 (1994-06-01), Carlton et al.
patent: 5335657 (1994-08-01), Terry, Jr.
patent: 5461611 (1995-10-01), Drake et al.
patent: 5540730 (1996-07-01), Terry, Jr.
patent: 5571150 (1996-11-01), Wernicke
patent: 5581703 (1996-12-01), Baugher et al.
patent: 5596569 (1997-01-01), Madonna et al.
patent: 5638358 (1997-06-01), Hagi et al.
patent: 5706516 (1998-01-01), Chang et al.
patent: 5707400 (1998-01-01), Terry, Jr.
patent: 5755750 (1998-05-01), Petruska
patent: 5925137 (1999-07-01), Okanoue et al.
patent: 5983360 (1999-11-01), Ugajin et al.
patent: 6021263 (2000-02-01), Kujoory et al.
patent: 6032194 (2000-02-01), Gai et al.
patent: 6205359 (2001-03-01), Boveja
patent: 6205488 (2001-03-01), Casey et al.
patent: 6233073 (2001-05-01), Bowers et al.
patent: 6246667 (2001-06-01), Ballantine et al.
patent: 6256292 (2001-07-01), Ellis et al.
patent: 6262976 (2001-07-01), McNamara
patent: 6275493 (2001-08-01), Morris et al.
patent: 6304575 (2001-10-01), Carroll et al.
patent: 6314110 (2001-11-01), Chin et al.
patent: 6330229 (2001-12-01), Jain et al.
patent: 6339488 (2002-01-01), Beshai et al.
patent: 6339595 (2002-01-01), Rekhter et al.
patent: 6359858 (2002-03-01), Smith et al.
patent: 6366556 (2002-04-01), Ballintine et al.
patent: 6370121 (2002-04-01), Hausman
patent: 6400681 (2002-06-01), Bertin et al.
patent: 6408001 (2002-06-01), Chuah et al.
patent: 6442134 (2002-08-01), Mitchell
patent: 6446131 (2002-09-01), Khansari et al.
patent: 6456407 (2002-09-01), Tammela et al.
patent: 6456587 (2002-09-01), Taniguchi
patent: 6466985 (2002-10-01), Goyal et al.
patent: 6563793 (2003-05-01), Golden et al.
patent: 6584535 (2003-06-01), Ouellet et al.
patent: 6604136 (2003-08-01), Chang et al.
patent: 6628624 (2003-09-01), Mahajan et al.
patent: 6636478 (2003-10-01), Sensel et al.
patent: 6639893 (2003-10-01), Chikenji et al.
patent: 6639896 (2003-10-01), Goode et al.
patent: 6647008 (2003-11-01), Galand et al.
patent: 6678241 (2004-01-01), Gai et al.
patent: 6680906 (2004-01-01), Nguyen
patent: 6680912 (2004-01-01), Kalman et al.
patent: 6690644 (2004-02-01), Gorshe
patent: 6711125 (2004-03-01), Walrand et al.
patent: 6724880 (2004-04-01), Lynch
patent: 6731597 (2004-05-01), Batchellor et al.
patent: 6741553 (2004-05-01), Grenier
patent: 6757286 (2004-06-01), Stone
patent: 6760775 (2004-07-01), Anerousis et al.
patent: 6765921 (2004-07-01), Stacey et al.
patent: 6778496 (2004-08-01), Meempat et al.
patent: 6795394 (2004-09-01), Swinkels et al.
patent: 6801506 (2004-10-01), Dey
patent: 6807172 (2004-10-01), Levenson et al.
patent: 6820210 (2004-11-01), Daruwalla et al.
patent: 6826158 (2004-11-01), Seaman et al.
patent: 6829651 (2004-12-01), Bass et al.
patent: 6831932 (2004-12-01), Boyle et al.
patent: 6879559 (2005-04-01), Blackmon et al.
patent: 6879594 (2005-04-01), Lee et al.
patent: 6886043 (2005-04-01), Mauger et al.
patent: 6922394 (2005-07-01), Kajiwara et al.
patent: 6925054 (2005-08-01), Atterton et al.
patent: 6934259 (2005-08-01), Klincewicz et al.
patent: 6985447 (2006-01-01), Gibson et al.
patent: 7009974 (2006-03-01), Fotedar
patent: 7035279 (2006-04-01), Bruckman et al.
patent: 7102995 (2006-09-01), Gonda
patent: 7212490 (2007-05-01), Kao et al.
patent: 7242664 (2007-07-01), Einstein et al.
patent: 7382789 (2008-06-01), Yu
patent: 7433671 (2008-10-01), Kailbach et al.
patent: 2001/0022786 (2001-09-01), King et al.
patent: 2001/0033575 (2001-10-01), Shimamura et al.
patent: 2002/0015411 (2002-02-01), Kataoka et al.
patent: 2002/0018482 (2002-02-01), Gotzer
patent: 2002/0024974 (2002-02-01), Karagiannis et al.
patent: 2002/0093949 (2002-07-01), Yasue et al.
patent: 2002/0118700 (2002-08-01), Bruckman
patent: 2002/0176371 (2002-11-01), Behzadi
patent: 2002/0176450 (2002-11-01), Kong et al.
patent: 2002/0179720 (2002-12-01), Liva et al.
patent: 2003/0002443 (2003-01-01), Basso et al.
patent: 2003/0009594 (2003-01-01), McElligott
patent: 2003/0012129 (2003-01-01), Lee et al.
patent: 2003/0021226 (2003-01-01), Mor
patent: 2003/0026298 (2003-02-01), Bisson et al.
patent: 2003/0061338 (2003-03-01), Stelliga
patent: 2003/0074469 (2003-04-01), Busi et al.
patent: 2003/0088698 (2003-05-01), Singh et al.
patent: 2003/0147344 (2003-08-01), Stewart et al.
patent: 2003/0147345 (2003-08-01), Takagi et al.
patent: 2003/0154315 (2003-08-01), Sultan et al.
patent: 2003/0196135 (2003-10-01), Gottlieb
patent: 2004/0022268 (2004-02-01), Busi et al.
patent: 2004/0071089 (2004-04-01), Bauer et al.
patent: 2004/0101303 (2004-05-01), Williams
patent: 2004/0170184 (2004-09-01), Hashimoto
patent: 2004/0179472 (2004-09-01), Khalilzadeh et al.
patent: 2004/0202171 (2004-10-01), Hama
patent: 2005/0135436 (2005-06-01), Nigam et al.
patent: 2005/0226265 (2005-10-01), Takatori
patent: 2005/0271035 (2005-12-01), Cohen et al.
Martini, et al. “Encapsulation Methods for Transport of Ethernet Frames Over IP/MPLS Networks.” IETF Draft, May 2001, Available at: search.ietf.org/internet-drafts/draft-martini-12circuit-encap-mpls-02.txt.
Rosen, et al. “MPLS Label Stack Encoding.” Request for Comments (RFC) 3032 of the Internet Engineering Task Force (IETF), Jan. 2001.
Awduche, et al. “Requirement for Traffic Engineering Over MPLS,” published as IETF RFC 2702, Sep. 1999.
Deering, S., “Host Extensions for IP Multicasting,” RFC 1112, Aug. 1989.
Lasserre, et al. “Virtual Private LAN Services Over MPLS draft-ietf-12vpn-vpls-ldp-03.txt,” Internet Draft Document—Provider Provisioned VPN Working Group, Jun. 2002 & Jan. 2003.
“SONET Bidirectional Line-Switched Ring Equipment Generic Criteria,” A Module of TSGR, FR-440, GR-1230-CORE by Bellcore, Issue 4, Dec. 1998.
Baker, et al. “PPP Bridging Control Protocol (BCP),” in IETF RFC 1638, Jun. 1994.
Bradley, et al., “Multiprotocol Interconnect Over Frame Relay,” in IETF RFC 1490, Jul. 1993.
Kompella, et al., “Virtual Private LAN Service,” IETF draft-ietf-12vpn-vpls-bgp-02.txt, May 2004.
IEEE Standard 802.17, “Part 17: Resilient Packet Ring (RPR) Access Method & Physical Layer Specifications,” RPR Alliance 2002, 2003.
Orave, F., “Scaling RPR with Multiple Rings: One Control Plane Multiple Transit Paths,” Presented at the IEEE 802.17 working group meeting, Portland, OR, Jul. 10, 2001.
Bruckman Leon
Roth Moran
Sdayoor Ron
Corrigent Systems Ltd.
Jagannathan Melanie
Nieves Peter A.
Sheehan Phinney Bass+ PA
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