# Multiprotocol Label Switching (mpls)

Last Modified: 2004-02-02

## Chair(s):

George Swallow <swallow@cisco.com>
Loa Andersson <loa@pi.se>

## Routing Area Director(s):

Bill Fenner <fenner@research.att.com>
Alex Zinin <zinin@psg.com>

## Routing Area Advisor:

Alex Zinin <zinin@psg.com>

## Mailing Lists:

General Discussion: mpls@uu.net
To Subscribe: mpls-request@uu.net
In Body: subscribe (unsubscribe)
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:
- procedures and protocols for multicast protocol extensions for
point-to-multipoint TE, 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
The Working Group chairs tracking of the working group documents can be
viewed at http://urax.utfors.net/~loa/MPLS_WG_Drafts.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
Oct 03 |  | Advance the Label Distribution Protocol to Draft Standard
Oct 03 |  | Submit the Traffic Engineering Link MIB to the IESG for as a Proposed Standard
Oct 03 |  | Submit a specification on Encapsulations to carry MPLS over IP and GRE to the IESG for as a Proposed Standard
Nov 03 |  | Together with CCAMP complete and establish the (G)MPLS change process
Nov 03 |  | Submit specification on LSP Ping to the IESG for publication as a Proposed Standard
Mar 04 |  | Submit a document defining the scope, requirements, and issues to resolve for setup of P2MP TE LSPs (MPLS and GMPLS)
Apr 04 |  | Advance MPLS Architecture and MPLS encapsulation to Draft Standard
Apr 04 |  | Submit a specification on Soft Pre-emption of LSP Tunnels to the IESG for publication as a Proposed Standard
Apr 04 |  | Submit specification on LSR Self Test to the IESG for publication as a Proposed Standard
Aug 04 |  | Submit an OAM Framework Document to the IESG for publication as an Informational RFC
Oct 04 |  | Advance
Nov 04 |  | Submit document(s) specifying protocol extensions, enhancements and mechanisms for setup of P2MP TE LSPs

## Internet-Drafts:

Definitions of Managed Objects for the Multiprotocol Label Switching, Label Distribution Protocol (LDP) (257933 bytes)
Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base (130246 bytes)
Multiprotocol Label Switching (MPLS) Label Switching Router (LSR)Management Information Base (117148 bytes)
LSP Hierarchy with Generalized MPLS TE (27003 bytes)
Multiprotocol Label Switching (MPLS) Forwarding Equivalence Class To Next Hop Label Forwarding Entry (FEC-To-NHLFE)Management Information Base (86918 bytes)
Definitions of Textual Conventions for Multiprotocol Label Switching (MPLS) Management (44875 bytes)
Link Bundling in MPLS Traffic Engineering (18083 bytes)
Multiprotocol Label Switching (MPLS) Management Overview (72348 bytes)
Graceful Restart Mechanism for BGP with MPLS (23090 bytes)
Fast Reroute Extensions to RSVP-TE for LSP Tunnels (82757 bytes)
Detecting MPLS Data Plane Failures (63930 bytes)
Multiprotocol Label Switching (MPLS) Label-Controlled ATM and Frame-Relay Management Interface Definition (34451 bytes)
Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base for Fast Reroute (59688 bytes)
Maximum Transmission Unit Signalling Extensions for the Label Distribution Protocol (20359 bytes)
Encapsulating MPLS in IP or Generic Routing Encapsulation (GRE) (31034 bytes)
Requirements for Point to Multipoint extension to RSVP-TE (56270 bytes)
Definition of an RRO node-id subobject (18801 bytes)
OAM Requirements for MPLS Networks (30236 bytes)
MPLS Traffic Engineering Soft preemption (21071 bytes)
Traffic Engineering Link Management Information Base (103417 bytes)
Label Switching Router Self-Test (36774 bytes)
Encoding of Attributes for Multiprotocol Label Switching (MPLS) Label Switched Path (LSP) Establishment Using RSVP-TE (37089 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)
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)
LDP Applicability (RFC 3037) (13601 bytes)
VCID Notification over ATM link for LDP (RFC 3038) (39134 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)
RSVP-TE: Extensions to RSVP for LSP Tunnels (RFC 3209) (132264 bytes)
Applicability Statement for Extensions to RSVP for LSP-Tunnels (RFC 3210) (17691 bytes)
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)
Signalling Unnumbered Links in Resource ReSerVation Protocol - Traffic Engineering (RSVP-TE) (RFC 3477) (19899 bytes)
Framework for MPLS-based Recovery (RFC 3469) (89331 bytes)
Graceful Restart Mechanism for Label Distribution Protocol (RFC 3478) (29248 bytes)
Fault Tolerance for the Label Distribution Protocol (LDP) (RFC 3479) (115778 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)

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