Techniques for introducing in-band network management...

Details Techniques for introducing in-band network management... Techniques for introducing in-band network management...

2005-07-19

2005-07-19

Pezzlo, John (Department: 2662)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S238000, C370S401000, C709S239000

Reexamination Certificate

active

06920133

ABSTRACT:
A system and method is provided for introducing in-band network management packets (INMPS) in a Multi-Protocol Label Switching (MPLS) network. This system and method of the invention uses INMPs for carrying OA&M information to label switching routers (LSRs) for effectively managing and operating MPLS-based networks. This system and method of the invention also includes techniques for distinguishing INMPs from user packets in an MPLS network. The system and method of the invention further includes using a predetermined code in a shim header of an MPLS packet to determine whether an MPLS packet is an INMP or a user packet. The predetermined code may be provided in an experimental field or a time-to-live field in the shim header of the packet. Alternatively, a label may be reserved for distinguishing an INMP from a user packet.

REFERENCES:
patent: 5991300 (1999-11-01), Tappan
patent: 6538991 (2003-03-01), Kodialam et al.
patent: 6603756 (2003-08-01), Tappan
patent: 6611532 (2003-08-01), Madour et al.
patent: 6731639 (2004-05-01), Ors et al.
Comer “Internetworking with TCP/IP vol. I: Principles, Protocols, and Architecture” Third Edition, Prentice Hall, 1995, pp. 92, 93, 99, 100, 123-138, and 162.
Rosen, MPLS Label Stack Encoding, Jan. 2001 (update to Apr. 1999), IETF RFC 3032, pp. 1-17.
Neil Harrison—Discussion Paper—“MPLS OAM Functions and PDU Structures”, Oct. 1999.
Neil Harrison—Discussion Paper—“OAM Principles for Layer Networks”.
Bonica et al.—“ICMP Extensions for MultiProtocol Label Switching”, Dec. 1999.
Callon et al—“A Framework for Multiprotocol Label Switching”, Sep. 1999.
Rosin et al.—“Multiprotocol Label Switching Architecture”, Aug. 1999.
LaFaucheur et al.—“MPLS Support of Differentiated Services”, Mar. 2000.
Brin et al.—“Per Hop Behavior Identification Codes”, Oct. 1999.
Krishnaswamy et al.—“MPLS Control Plane for Switched Optical Networks”, Feb. 2000.
Suzuki—“The Assignment of the Information Field and Protocol Identifier in the Q.2941 Generic Identifier and Q.2957 User-to-User Signaling for the Internet Protocol”, Jan. 2000.
Yahong—“A Probe Method in MPLS Loop Avoidance”, Dec. 1999.
Ohba et al.—“MPLS Loop Prevention Mechanism”, Oct. 1999.
Gibson—“The Management of MLPS”, Mar. 2000.
Andersson et al.—“MPLS Capability Set”, Oct. 1999.
Fedyk et al.—“Metrics and Resource Classses for Traffic Engineering”, Oct. 1999.
Nagami, et al.—“VCID Notification Over ATM Link for LDP”, Jul. 1999.
Ashwood-Smith et al.—“Improving Topology Data Base Accuracy With LSP Feedback Via CR-LDP”, Feb. 2000.
Wright et al.—“CR-LDP Extensions for Interworking With RSVP-TE”, Mar. 2000.
Andersson et al., “LDP Specification”, Oct. 1999.
Awduche et al., “RSVP-TE: Extensions to RSVP for LSP-Tunnels”, Feb. 2000.
Awduche et al., “Applicability Statement for Extensions to RSVP for LSP-Tunnels”, Apr. 2000.
Boscher et al., “LDP State Machine”, Jan. 2000.
Lang et al., “Extensions to RSVP for Optical Networking”, Sep. 2000.
Lang et al., “Link Management Protocol (LMP)”, Sep. 2000.
Martini et al., “Transport of Layer 2 Frames over MPLS”, Dec. 1999.
Shew, “Fast Restoration of MPLS Label Switched Paths”, Oct. 1999.
T. Theimer “Requirements for OAM Functionality in MPLS”, Oct. 1999.

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