Multiprotocol Label Switching (mpls)

Last Modified: 2006-03-24

Additional information is available at tools.ietf.org/wg/mpls

Chair(s):

  • George Swallow <swallow@cisco.com>

  • Loa Andersson <loa@pi.se>

    Routing Area Director(s):

  • Ross Callon <rcallon@juniper.net>
  • Bill Fenner <fenner@research.att.com>

    Routing Area Advisor:

  • Ross Callon <rcallon@juniper.net>

    Mailing Lists:

    General Discussion: mpls@lists.ietf.org
    To Subscribe: https://www1.ietf.org/mailman/listinfo/mpls
    Archive: http://cell.onecall.net/cell-relay/archives/mpls/mpls.index.html

    Description of Working Group:

    The MPLS working group is responsible for standardizing a base
    technology for using label switching and for the implementation of
    label-switched paths over various packet based link-level
    technologies, such as Packet-over-Sonet, Frame Relay, ATM, and
    LAN technologies (e.g. all forms of Ethernet, Token Ring, etc.).
    This includes procedures and protocols for the distribution of
    labels between routers and encapsulation.

    The working group is also responsible for specifying the necessary
    MIBs for the functionality specified in the base MPLS technology.

    The first generation of the MPLS standards are largely complete,
    and the current WG work items are:

    - Define requirements, mechanisms and protocol extensions for
    point-to-multipoint (P2MP) MPLS

    - Define requirements, mechanisms and protocol extensions for
    traffic engineered point-to-multipoint (P2MP) MPLS, including
    soft preemption

    - Define requirements and mechanisms for MPLS OAM

    - Define an overall OAM framework for MPLS applications

    - MPLS-specific aspects of traffic engineering for multi-areas/multi-AS
    in cooperation with the CCAMP WG

    - Determine (with CCAMP) what procedures are appropriate for evaluating
    proposals to extend the MPLS and GMPLS protocols, and document these

    - Document current implementation practices for MPLS load sharing

    The Working Group chairs tracking of the working group documents can be
    viewed at http://www.tla-group.com/~mpls/mpls-wg-docs.htm

    Goals and Milestones:

    Done  Submit documents from original MPLS effort to IESG
    Done  Framework for IP multicast over label-switched paths ready for advancement.
    Done  LDP fault tolerance specification ready for advancement to Proposed Standard.
    Done  Submit Definitions of Managed Objects for MultoiProtocol Label Switching, Label Distribution Protocol (LDP) to the IESG for publication as Proposed Standards
    Done  Specification for MPLS-specific recovery ready for advancement.
    Done  Submit Multiprotocol Label Switching (MPLS) Forward Equivalency Class-To-Next Hop Label Forwarding Entry Management Information Base to the IESG for publication as Proposed Standards
    Done  Submit Multiprotocol Label Switching (MPLS) Label Switching Router (LSR), Management Information Base to the IESG for publication as Proposed Standards
    Done  Submit Multiprotocol Label Switching (MPLS) Management Overview to the IESG for publication as Proposed Standards
    Done  Submit Definitions of Textual Conventions for Multiprotocol Label Switching (MPLS) Management to the IESG for publication as Proposed Standards
    Done  Submit Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base to the IESG for publication as Proposed Standards
    Done  Submit the Traffic Engineering Link MIB to the IESG for as a Proposed Standard
    Done  Submit a specification on Encapsulations to carry MPLS over IP and GRE to the IESG for as a Proposed Standard
    Done  Submit specification on LSP Ping to the IESG for publication as a Proposed Standard
    Done  Submit a document defining the scope, requirements, and issues to resolve for setup of P2MP TE LSPs (MPLS and GMPLS)
    Done  Submit an OAM Framework Document to the IESG for publication as an Informational RFC
    Done  Submit a BCP on MPLS load sharing to the IESG
    Done  Submit specification on LSR Self Test to the IESG for publication as a Proposed Standard
    Dec 2005  Submit a specification on Soft Pre-emption of LSP Tunnels to the IESG for publication as a Proposed Standard
    Dec 2005  Submit document(s) specifying protocol extensions, enhancements and mechanisms for setup of P2MP TE LSPs
    Feb 2006  Submit requirements for point-to-multipoint extensions to LDP
    Apr 2006  Advance 'Extension to RSVP for LSP Tunnels' to Draft Standard
    Apr 2006  Advance MPLS Architecture and MPLS encapsulation to Draft Standard
    Aug 2006  Submit document(s) specifying LDP extensions for setup of P2MP LSPs

    Internet-Drafts:

    ICMP Extensions for MultiProtocol Label Switching (13483 bytes)
    Graceful Restart Mechanism for BGP with MPLS (23092 bytes)
    Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base for Fast Reroute (74761 bytes)
    Label Switching Router Self-Test (28664 bytes)
    LDP Specification (289193 bytes)
    Avoiding Equal Cost Multipath Treatment in MPLS Networks (13843 bytes)
    Extensions to RSVP-TE for Point-to-Multipoint TE LSPs (124639 bytes)
    Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3 (24065 bytes)
    Detecting Data Plane Failures in Point-to-Multipoint Multiprotocol (60906 bytes)
    Experience with the LDP protocol (14870 bytes)
    LDP Implementation Survey Results (46941 bytes)
    OAM Requirements for Point-to-Multipoint MPLS Networks (30557 bytes)
    MPLS Multicast Encapsulations (18769 bytes)
    Label Distribution Protocol Extensions for Point-to-Multipoint and Multipoint-to-Multipoint Label Switched Paths (50861 bytes)
    MPLS Upstream Label Assignment for LDP (19923 bytes)
    Requirements for point-to-multipoint extensions to the Label Distribution Protocol (39990 bytes)
    A Link-Type sub-TLV to convey the number of Traffic Engineering Label Switch Paths signalled across a link (13197 bytes)
    Codepoint Registry for The Flags Field in the Resource Reservation Protocol Traffic Engineering (RSVP-TE) Session Attribute Object (8251 bytes)
    Point-to-Multipoint Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB) module (91505 bytes)

    Request For Comments:

    Requirements for Traffic Engineering Over MPLS (RFC 2702) (68386 bytes)
    Multiprotocol Label Switching Architecture (RFC 3031) (147175 bytes)
    MPLS Label Stack Encoding (RFC 3032) (48314 bytes) updated by RFC 3443,RFC 4182
    Use of Label Switching on Frame Relay Networks Specification (RFC 3034) (53176 bytes)
    MPLS using LDP and ATM VC Switching (RFC 3035) (46463 bytes)
    LDP Specification (RFC 3036) (274855 bytes)
    VCID Notification over ATM link for LDP (RFC 3038) (39134 bytes)
    LDP Applicability (RFC 3037) (13601 bytes)
    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 (RFC 3033) (52188 bytes)
    MPLS Loop Prevention Mechanism (RFC 3063) (93523 bytes)
    Carrying Label Information in BGP-4 (RFC 3107) (16442 bytes)
    Applicability Statement for Extensions to RSVP for LSP-Tunnels (RFC 3210) (17691 bytes)
    RSVP-TE: Extensions to RSVP for LSP Tunnels (RFC 3209) (132264 bytes) updated by RFC 3936,RFC 4420
    Constraint-Based LSP Setup using LDP (RFC 3212) (87591 bytes)
    Applicability Statement for CR-LDP (RFC 3213) (14489 bytes)
    LSP Modification Using CR-LDP (RFC 3214) (25453 bytes)
    LDP State Machine (RFC 3215) (117278 bytes)
    MPLS Support of Differentiated Services (RFC 3270) (137960 bytes)
    Framework for IP Multicast in MPLS (RFC 3353) (65860 bytes)
    Time to Live (TTL) Processing in MPLS Networks (Updates RFC 3032) (RFC 3443) (18749 bytes) updates RFC 3032
    Signalling Unnumbered Links in Resource ReSerVation Protocol - Traffic Engineering (RSVP-TE) (RFC 3477) (19899 bytes)
    Framework for MPLS-based Recovery (RFC 3469) (89331 bytes)
    Fault Tolerance for the Label Distribution Protocol (LDP) (RFC 3479) (115778 bytes)
    Graceful Restart Mechanism for Label Distribution Protocol (RFC 3478) (29248 bytes)
    Signalling Unnumbered Links in CR-LDP (Constraint-Routing Label Distribution Protocol) (RFC 3480) (17076 bytes)
    Applicability Statement for Restart Mechanisms for the Label Distribution Protocol (LDP) (RFC 3612) (35677 bytes)
    Definitions of Textual Conventions for Multiprotocol Label Switching (MPLS) Management (RFC 3811) (40353 bytes)
    Definitions of Managed Objects for the Multiprotocol Label Switching, Label Distribution Protocol (LDP) (RFC 3815) (215916 bytes)
    Multiprotocol Label Switching (MPLS) Forwarding Equivalence Class To Next Hop Label Forwarding Entry (FEC-To-NHLFE)Management Information Base (RFC 3814) (87518 bytes)
    Multiprotocol Label Switching (MPLS) Label Switching Router (LSR)Management Information Base (RFC 3813) (116120 bytes)
    Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base (RFC 3812) (136475 bytes)
    Maximum Transmission Unit Signalling Extensions for the Label Distribution Protocol (RFC 3988) (18841 bytes)
    Encapsulating MPLS in IP or Generic Routing Encapsulation (GRE) (RFC 4023) (31696 bytes)
    Fast Reroute Extensions to RSVP-TE for LSP Tunnels (RFC 4090) (83965 bytes)
    Removing a Restriction on the use of MPLS Explicit NULL (RFC 4182) (14087 bytes) updates RFC 3032
    Link Bundling in MPLS Traffic Engineering (RFC 4201) (27033 bytes) updates RFC 3471,RFC 3472,RFC 3473
    Label Switched Paths (LSP) Hierarchy with Generalized Multi-Protocol Label Switching (GMPLS) Traffic Engineering (TE) (RFC 4206) (31965 bytes)
    Multiprotocol Label Switching (MPLS) Management Overview (RFC 4221) (70291 bytes)
    Traffic Engineering Link Management Information Base (RFC 4220) (104566 bytes)
    Multiprotocol Label Switching (MPLS) Label-Controlled ATM and Frame-Relay Management Interface Definition (RFC 4368) (43315 bytes)
    Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures (RFC 4379) (116872 bytes) updates RFC 1122
    A Framework for Multi-Protocol Label Switching (MPLS) Operations and Management (OAM) (RFC 4378) (23640 bytes)
    Operations and Management (OAM) Requirements for Multi-Protocol Label Switched (MPLS) Networks (RFC 4377) (31889 bytes)
    Encoding of Attributes for Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Establishment Using Resource ReserVation Protocol-Traffic Engineering (RSVP-TE) (RFC 4420) (47235 bytes) updates RFC 3209,RFC 3473
    Signaling Requirements for Point to Multipoint Traffic Engineered MPLS Label Switched Paths (LSPs) (RFC 4461) (64542 bytes)
    Definition of a Record Route Object (RRO) Node-Id Sub-Object (RFC 4561) (19362 bytes)
    IETF Secretariat - Please send questions, comments, and/or suggestions to ietf-web@ietf.org.

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