Method and system for sending return messages in MPLS networks

Details Method and system for sending return messages in MPLS networks Method and system for sending return messages in MPLS networks

2002-07-26

2010-11-30

Hsu, Alpus H (Department: 2465)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S395210, C370S400000, C709S238000

Reexamination Certificate

active

07843924

ABSTRACT:
A method for sending a message via a label switch telecommunications network, in particular an MPLS network. The method comprises identifying at a first router an input label attached to the message and using the first label to identify a output label that defines a forward path for the message. This is done by reading the label table in the router. Once the output label is identified, the input label is replaced with the output label and the message and the output label together are sent to another node of the network. When a return message is to be sent, input labels for the forward message path are used as output labels for the return message path.

REFERENCES:
patent: 5996021 (1999-11-01), Civanlar et al.
patent: 6678264 (2004-01-01), Gibson
patent: 6680943 (2004-01-01), Gibson et al.
patent: 6697361 (2004-02-01), Fredette et al.
patent: 6771645 (2004-08-01), Sasagawa et al.
patent: 6856991 (2005-02-01), Srivastava
patent: 6965572 (2005-11-01), Boodaghians
patent: 6973057 (2005-12-01), Forslow
patent: 7298693 (2007-11-01), Owens et al.
patent: 7342874 (2008-03-01), Pegrum et al.
patent: 7463591 (2008-12-01), Kompella et al.
patent: 2002/0054405 (2002-05-01), Guo et al.
patent: 2003/0088699 (2003-05-01), Luciani et al.
patent: 2004/0114595 (2004-06-01), Doukai
patent: WO 01/29685 (2001-04-01), None
S.M. Shahrier, “A Bi-Directional LSP Tunneling Architecture for MPLS”, Internet Draft, Jun. 2001, pp. 1-4, from http://www3.ietf.org/proceedings/02mar/I-D/draft-shahrier-mpls-lsp-00.txt.
Chang et al., “A Path Protection/Restoration Mechanism for MPLS Networks”, IETF Draft, Nov. 2000, pp. 1-24, from http://tools.ietf.org/html/draft-chang-mpls-path-protection-02.
Nortel Networks, “MPLS—An introduction to multiprotocol label switching,” (Apr. 2001), 13 pgs.
General DataComm, “A Management Briefing onSelf-Healing ATM Networks,” (1997), 10 pgs.
Huang et al., “A Path Protection/Restoration Mechanism for MPLS Networks,” (Mar. 2000), 15 pgs.
Huang et al., “A Path Protection/Restoration Mechanism for MPLS Networks,” (Jul. 2000), 21 pgs.
Owens et al., “A Path Protection/Restoration Mechanism for MPLS Networks,” (Nov. 2000), 22 pgs.
Owens et al., “A Path Protection/Restoration Mechanism for MPLS Networks,” (Jul. 2001), 21 pgs.
Huang et al., “Extensions to RSVP-TE for MPLS Path Protection,” (Jun. 2000), 10 pgs.
Sharma et al., “Extensions to RSVP-TE for MPLS Path Protection,” (Nov. 2000), 8 pgs.
Owens et al., “Extensions to RSVP-TE for MPLS Path Protection,” (Jul. 2001), 12 pgs.
Harrison et al., “OAM Functionality for MPLS Networks,” (Feb. 2001), 28 pgs.
Harrison et al., “Requirements for OAM in MPLS Networks,” (May 2001), 7 pgs.
Sharma et al., Framework for MPLS-based Recovery (Mar. 2001), 31 pgs.
Sharma et al., Framework for MPLS-based Recovery (Nov. 2000), 35 pgs.
Sharma et al., Framework for MPLS-based Recovery (Sep. 2000), 30 pgs.
Sharma et al., Framework for MPLS-based Recovery (Jul. 2001), 31 pgs.
Krishnan et al., “Extensions to RSVP to Handle Establishment of Alternate Label-Switched Paths for Fast Re-route,” (Jun. 1999), 6 pgs.
Haskin et al., “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute,” (Nov. 2000), 9 pgs.
Haskin et al., “A Method for Setting an Alternative Label Switched Paths to Handle Fast Reroute,” (May 2000), 9 pgs.
Blais, “Re: (oldies question) ATM connection full duplex?,” Cell Relay Archive, (Dec. 2000), 2 pgs.
Thomas, Stephen A., “IPng and the TCP/IP Protocols: Implementing the Next Generation Internet”, Copyright © 1996 by John Wiley & Sons, Inc. (pp. 375-403).

Affiliated with

Also associated with

Rating

Method and system for sending return messages in MPLS 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 Method and system for sending return messages in MPLS networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for sending return messages in MPLS networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4192575