Multiplex communications – Fault recovery
Reexamination Certificate
2011-02-01
2011-02-01
Patel, Ajit (Department: 2617)
Multiplex communications
Fault recovery
C370S219000, C370S220000, C370S227000, C370S228000
Reexamination Certificate
active
07881184
ABSTRACT:
Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches provide upstream messages indicating to upstream switching system that the downstream traffic arrived in tact and was properly handled. Upon this loss or failure of the upstream status message to an upstream switching system, an upstream switching system can reroute data traffic around a failed link or failed switch with a minimal amount of lost data. The upstream status message is conveyed from a downstream switching system to an upstream switching system via a reverse notification tree data pathway.
REFERENCES:
patent: 4706080 (1987-11-01), Sincoskie
patent: 4825206 (1989-04-01), Brice et al.
patent: 5138615 (1992-08-01), Lamport et al.
patent: 5241534 (1993-08-01), Omuro et al.
patent: 5245616 (1993-09-01), Olson
patent: 5327427 (1994-07-01), Sandesara
patent: 5371731 (1994-12-01), Pratt et al.
patent: 5436886 (1995-07-01), McGill
patent: 5450578 (1995-09-01), Mackenthun
patent: 5771227 (1998-06-01), Benayoun et al.
patent: 5838924 (1998-11-01), Anderson et al.
patent: 5930259 (1999-07-01), Katsube et al.
patent: 5933412 (1999-08-01), Choudhury et al.
patent: 5991300 (1999-11-01), Tappan
patent: 6034961 (2000-03-01), Masuo et al.
patent: 6055561 (2000-04-01), Feldman et al.
patent: 6065061 (2000-05-01), Blahut et al.
patent: 6111858 (2000-08-01), Greaves et al.
patent: 6167025 (2000-12-01), Hsing et al.
patent: 6215765 (2001-04-01), McAllister et al.
patent: 6226260 (2001-05-01), McDysan
patent: 6324161 (2001-11-01), Kirch
patent: 6339595 (2002-01-01), Rekhter et al.
patent: 6452942 (2002-09-01), Lemieux
patent: 6463062 (2002-10-01), Buyukkoc et al.
patent: 6504963 (2003-01-01), Fang et al.
patent: 6530032 (2003-03-01), Shew et al.
patent: 6532088 (2003-03-01), Dantu et al.
patent: 6535481 (2003-03-01), Andersson et al.
patent: 6538987 (2003-03-01), Cedrone et al.
patent: 6590893 (2003-07-01), Hwang et al.
patent: 6594268 (2003-07-01), Aukia et al.
patent: 6647208 (2003-11-01), Kirby
patent: 6680943 (2004-01-01), Gibson et al.
patent: 6697329 (2004-02-01), McAllister et al.
patent: 6721269 (2004-04-01), Cao et al.
patent: 6728781 (2004-04-01), Aguilera et al.
patent: 6813242 (2004-11-01), Haskin et al.
patent: 6879594 (2005-04-01), Lee et al.
patent: 6895441 (2005-05-01), Shabtay et al.
patent: 6944131 (2005-09-01), Beshai et al.
patent: 6947376 (2005-09-01), Deng et al.
patent: 7298693 (2007-11-01), Owens et al.
patent: 7315510 (2008-01-01), Owens et al.
patent: 2002/0181485 (2002-12-01), Cao et al.
patent: 2008/0095045 (2008-04-01), Owens et al.
patent: WO 01/29682 (2001-04-01), None
patent: WO 01/29685 (2001-04-01), None
Rosen et al., “Multiprotocol Label Switching Architecture” draft-ietf-mpls-arch-06.txt, http://www3.ietf.org/proceedings/99nov/I-D/draft-ietf-mpls-arch-06.txt, Aug. 1999, 49 pages.
Callon, et al., “A Framework for Multiprotocol Label Switching” <draft-ietf-mpls-framework-05.txt>, http:/www3.ietf.org/proceedings/99nov/I-D/draft-ietf-mpls-framework-05.txt, Sep. 1999, 64 pages.
Awduche, et al., “Requirements for Traffic Engineering Over MPLS”, http://delivery.acm.org/10.1145/rfc—fulltext/RFC2702/rfc2702.txt?key1=RFC2702&key2=0334318711&c..., Sep. 1999, 26 pages.
Andersson, et al., “LDP Specification” draft-ietf-mpls-ldp-06.txt, http://www3.ietf.org/proceedings/99nov/I-D/draft-ietf-mpls-ldp-06.txt, Oct. 1999, 95 pages.
Jamoussi, Bilel, “Constraint-Based LSP Setup Using LDP” draft-ictf-mpls-cr-ldp-03.txt, http.://www3.ietf.org/proceedings/99nov/I-D/draft-ietf-mpls-cr-ldp-03.txt, Sep. 1999, 34 pages.
Braden, et al., RFC 2205 (RFC2205), “RFC 2205—Resource ReSerVation Protocol (RSVP)—Version 1 Functional Specification”, http://www.faqs.org/rfcs/rfc2205.html, Sep. 1997, 74 pages.
Awduche, et al., “Extensions to RSVP for LSP Tunnels”, draft-ietf-mpls-rsvp-lsp-tunnel-04.txt, http://www3.ietf.org/proceedings/99nov/I-D/draft-ietf-mpls-rsvp-lsp-tunnel-04.txt, Sep. 1999, 37 pages.
Owens, et al., “Network Survivability Considerations for Traffic Engineered IP Networks”, draft-owens-te-network-survivability-01.txt, http: //www3.ietf.org/proceedings/02mar/I-D/draft-owens-te-network-survivability-01..txt, Jul. 2001, 15 pages.
Sharma, et al., “Framework for MPLS-based Recovery”, <draft-ietf-mpls-recovery-frmwrk-00.txt>, http://tools.ieft.org/html/draft-ietf-mpls-reocvery-frmwrk-00, Sep. 2000, 30 pages.
Huang, et al., “A Path Protection/Restoration Mechanism for MPLS Networks”, <draft-chang-mpls-path-protection-00.txt., http://tools.ietf.org/html/draft-chang-mpls-path-protection-00, Mar. 2000 15 pages.
Huang, et al., “Extensions to RSVP-TE for MPLS Path Protection”, <draft-chang-mpls-rsvpte-path-protection-ext-00.txt>, http://tools.ietf.org/html/draft-chang-mpls-rsvptc-path-protection-00, Jun. 2000, 10 pages.
“Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria”, Document No. GR-253, Issue No. 04; Issue Date Dec. 2005, http//telecom-info.telcordia.com/site-cgi/ido/docs2.pl?ID=169750223&page=idosearch&docnum=GR-253, 20 pages.
“SONET Dual-Fed Unidirectional Path Switched Ring (UPSR) Equipment Generic Criteria”, GR-1400-CORE, Issue 2, Jan. 1999, SONET UPSR Equipment Generic Criteria Contents, 5 pages.
“SONET Bidirectional Line-Switched Ring Equipment Generic Criteria”, GR-1230-CORE, Issue 4, Dec. 1998, SONET BLSR Equipment Generic Criteria Contents, 7 pages.
Downey, “Overview of Tag Switching”, IEEE, 1997, pp. 61-66.
Viswanathan, et al. “Evolutioin of Multiprotocol Label Switching”, IEEE Communications Magazine, May 1998, pp. 165-173.
Le Faucheur, “IETF Multiprotocol Label Switching (MPLS) Architecture”, IEEE, 1998, pp. 6-15.
Dovvney, “Overview of Tag Switching”, IEEE, 1997, pp. 61-66.
Viswanathan, et al., “Evolution of Multiprotocol Label Switching”, IEEE Communications Magazine, 1998, pp. 165-173.
Le Faucheur,“IETF Multiprotocol Label Switching (MPLS) Architecture”, IEEE, 1998, pp. 6-15.
Haskin, et al. “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute”,http://toos.ietf.org/html/draft-haskin-mpls-fast-reroute-00.txt, Jun. 1999, 10 pages.
Haskin, et al. “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute”,http://toos.ietforg/html/draft-haskin-mpls-fast-reroute-01.txt, Jun. 1999, 9 pages.
Haskin, et al. “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute”,http://toos.ietf.org/html/draft-haskin-mpls-fast-reroute-02.txt, Dec. 1999, 5 pages.
Haskin, et al. “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute”,http://toos.ietforg/html/draft-haskin-mpls-fast-reroute-03.txt, Mar. 2000, 7 pages.
Haskin, et al. “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute”,http://toos.ietf.org/html/draft-haskin-mpls-fast-reroute-04.txt, May 2000, 7 pages.
Huang Changcheng
Makam Srinivas V.
Owens Kenneth R.
Sharma Vishal
Hamilton Brook Smith & Reynolds P.C.
Patel Ajit
Tellabs Operations Inc.
LandOfFree
Reverse notification tree for data networks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reverse notification tree for data networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reverse notification tree for data networks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2619483