Multiplex communications – Fault recovery – Bypass an inoperative switch or inoperative element of a...
Reexamination Certificate
2008-01-01
2008-01-01
Yao, Kwang Bin (Department: 2616)
Multiplex communications
Fault recovery
Bypass an inoperative switch or inoperative element of a...
C370S389000, C370S395500
Reexamination Certificate
active
09692885
ABSTRACT:
Recovery time upon the failure of a link or switching system in an asynchronous data network can be minimized if downstream data switches can provide upstream messages to upstream switching systems indicating to upstream switching systems that the downstream traffic arrived in tact and was properly handled. In one embodiment, the loss or failure of the upstream status message to an upstream switching system, causes an upstream switching system to reroute data traffic around a failed link or failed switch with a minimal amount of lost data.
REFERENCES:
patent: 4706080 (1987-11-01), Sincoskie
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: 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: 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: 6813242 (2004-11-01), Haskin et al.
patent: 6879594 (2005-04-01), Lee et al.
patent: 2002/0181485 (2002-12-01), Cao et al.
Arun Viswanathan, et al., “Evolution of Multiprotocol Label Switching,” IEEE Communications Magazine, May 1998.
Francois Le Faucheur, “IETF Multiprotocol Label Switching (MPLS) Architecture,” Cisco Systems, France.
Tom Downey, “Over view of Tag Switching” Cisco Systems, Inc., Chemsford, MA; 0-7803-3987-8/97.
Downey, “Overview of Tag Switching”, IEEE, 1997, pp. 61-66.
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.ietf.org/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.ietf.org/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.
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 Traddic Engineering Over MPLS”, http://delivery.acm.org/10.1145/rfc—fulltext/RFC2702/rfc2702.txt?key1=RFC2702&key2?0334318711&c..., Sep. 1999, 26 pages.
Anderson, et al., “LDP Sepcification” 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-ietf-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.
Awuche, 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.ietf.org/html/draft-ietf-mpls-reocvery-frmwrk-00.txt, 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-rsvpte-path-protection-ext-00.txt., Jun. 2000, 10 pages.
“Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria”, Document No. GR-253, Issue Number 04; Issue Date Dec. 2005, http://telecom-info.telcordia.com/site-cgi/ido/docs2.pl?ID=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.
Huang Changcheng
Makam Srinivas V.
Owens Kenneth R.
Sharma Vishal
Baker & Botts L.L.P.
Tellabs Operations Inc.
Wong Warner
Yao Kwang Bin
LandOfFree
Method and apparatus for detecting MPLS network failures does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for detecting MPLS network failures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for detecting MPLS network failures will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3932095