Multiprotocol Label Switching (mpls)
------------------------------------

 Charter
 Last Modified: 2006-03-24

 Current Status: Active Working Group

 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:

Posted Revised         I-D Title   <Filename>
------ ------- --------------------------------------------
Jul 1999 Feb 2007   <draft-ietf-mpls-icmp-08.txt>
                ICMP Extensions for MultiProtocol Label Switching 

Jul 2002 Sep 2006   <draft-ietf-mpls-fastreroute-mib-06.txt>
                Multiprotocol Label Switching (MPLS) Traffic Engineering 
                Management Information Base for Fast Reroute 

Apr 2003 Oct 2006   <draft-ietf-mpls-soft-preemption-08.txt>
                MPLS Traffic Engineering Soft Preemption 

Oct 2003 Oct 2005   <draft-ietf-mpls-lsr-self-test-06.txt>
                Label Switching Router Self-Test 

Oct 2004 Sep 2006   <draft-ietf-mpls-rfc3036bis-04.txt>
                LDP Specification 

Oct 2004 Feb 2007   <draft-ietf-mpls-ecmp-bcp-03.txt>
                Avoiding Equal Cost Multipath Treatment in MPLS Networks 

Nov 2004 Jan 2007   <draft-ietf-mpls-rsvp-te-p2mp-07.txt>
                Extensions to RSVP-TE for Point-to-Multipoint TE LSPs 

Feb 2005 Nov 2006   <draft-ietf-mpls-over-l2tpv3-03.txt>
                Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3 

Sep 2005 Sep 2006   <draft-ietf-mpls-p2mp-lsp-ping-02.txt>
                Detecting Data Plane Failures in Point-to-Multipoint 
                Multiprotocol 

Sep 2005 Oct 2006   <draft-ietf-mpls-explicit-resource-control-bundle-02.txt>
                Component Link Recording and Resource Control for GMPLS Link 
                Bundles 

Sep 2005 Sep 2005   <draft-ietf-mpls-ldp-experience-00.txt>
                Experience with the LDP protocol 

Oct 2005 Oct 2005   <draft-ietf-mpls-ldp-survey2002-00.txt>
                LDP Implementation Survey Results 

Feb 2006 Mar 2007   <draft-ietf-mpls-multicast-encaps-03.txt>
                MPLS Multicast Encapsulations 

Mar 2006 Oct 2006   <draft-ietf-mpls-ldp-p2mp-02.txt>
                Label Distribution Protocol Extensions for Point-to-Multipoint 
                and Multipoint-to-Multipoint Label Switched Paths 

Mar 2006 Dec 2006   <draft-ietf-mpls-upstream-label-01.txt>
                MPLS Upstream Label Assignment and Context Specific Label Space 

May 2006 Mar 2007   <draft-ietf-mpls-mp-ldp-reqs-02.txt>
                Requirements for Point-To-Multipoint Extensions to the Label 
                Distribution Protocol 

May 2006 Dec 2006   <draft-ietf-mpls-number-0-bw-te-lsps-05.txt>
                A Link-Type sub-TLV to convey the number of Traffic Engineering 
                Label Switched Paths signalled with zero reserved bandwidth 
                across a link 

Jul 2006 Feb 2007   <draft-ietf-mpls-iana-rsvp-session-flags-01.txt>
                Codepoint Registry for The Flags Field in the Resource 
                Reservation Protocol Traffic Engineering (RSVP-TE) Session 
                Attribute Object 

Sep 2006 Feb 2007   <draft-ietf-mpls-p2mp-te-mib-03.txt>
                Point-to-Multipoint Multiprotocol Label Switching (MPLS)Traffic 
                Engineering (TE) Management Information Base (MIB) module 

Jan 2007 Jan 2007   <draft-ietf-mpls-ldp-typed-wildcard-00.txt>
                LDP Typed Wildcard FEC 

 Request For Comments:

  RFC   Stat Published     Title
------- -- ----------- ------------------------------------
RFC2702 I    Sep 1999    Requirements for Traffic Engineering Over MPLS 

RFC3031 PS   Jan 2001    Multiprotocol Label Switching Architecture 

RFC3032 PS   Jan 2001    MPLS Label Stack Encoding 

RFC3034 PS   Jan 2001    Use of Label Switching on Frame Relay Networks 
                       Specification 

RFC3035 PS   Jan 2001    MPLS using LDP and ATM VC Switching 

RFC3036 PS   Jan 2001    LDP Specification 

RFC3038 PS   Jan 2001    VCID Notification over ATM link for LDP 

RFC3037 PS   Jan 2001    LDP Applicability 

RFC3033 PS   Jan 2001    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 

RFC3063 E    Feb 2001    MPLS Loop Prevention Mechanism 

RFC3107 PS   May 2001    Carrying Label Information in BGP-4 

RFC3210 I    Dec 2001    Applicability Statement for Extensions to RSVP for 
                       LSP-Tunnels 

RFC3209 PS   Dec 2001    RSVP-TE: Extensions to RSVP for LSP Tunnels 

RFC3212 PS   Feb 2002    Constraint-Based LSP Setup using LDP 

RFC3213 I    Feb 2002    Applicability Statement for CR-LDP 

RFC3214 PS   Feb 2002    LSP Modification Using CR-LDP 

RFC3215 I    Feb 2002    LDP State Machine 

RFC3270 PS   May 2002    MPLS Support of Differentiated Services 

RFC3353 I    Aug 2002    Framework for IP Multicast in MPLS 

RFC3443 PS   Jan 2003    Time to Live (TTL) Processing in MPLS Networks (Updates 
                       RFC 3032) 

RFC3477 PS   Feb 2003    Signalling Unnumbered Links in Resource ReSerVation 
                       Protocol - Traffic Engineering (RSVP-TE) 

RFC3469 I    Feb 2003    Framework for MPLS-based Recovery 

RFC3478 PS   Feb 2003    Graceful Restart Mechanism for Label Distribution 
                       Protocol 

RFC3479 PS   Feb 2003    Fault Tolerance for the Label Distribution Protocol 
                       (LDP) 

RFC3480 PS   Feb 2003    Signalling Unnumbered Links in CR-LDP 
                       (Constraint-Routing Label Distribution Protocol) 

RFC3612 I    Sep 2003    Applicability Statement for Restart Mechanisms for the 
                       Label Distribution Protocol (LDP) 

RFC3811Standard  Jun 2004    Definitions of Textual Conventions for Multiprotocol 
                       Label Switching (MPLS) Management 

RFC3815Standard  Jun 2004    Definitions of Managed Objects for the Multiprotocol 
                       Label Switching, Label Distribution Protocol (LDP) 

RFC3814Standard  Jun 2004    Multiprotocol Label Switching (MPLS) Forwarding 
                       Equivalence Class To Next Hop Label Forwarding Entry 
                       (FEC-To-NHLFE)Management Information Base 

RFC3813Standard  Jun 2004    Multiprotocol Label Switching (MPLS) Label Switching 
                       Router (LSR)Management Information Base 

RFC3812Standard  Jun 2004    Multiprotocol Label Switching (MPLS) Traffic Engineering 
                       Management Information Base 

RFC3988 E    Feb 2005    Maximum Transmission Unit Signalling Extensions for the 
                       Label Distribution Protocol 

RFC4023Standard  Mar 2005    Encapsulating MPLS in IP or Generic Routing 
                       Encapsulation (GRE) 

RFC4090Standard  May 2005    Fast Reroute Extensions to RSVP-TE for LSP Tunnels 

RFC4182Standard  Sep 2005    Removing a Restriction on the use of MPLS Explicit NULL 

RFC4206Standard  Oct 2005    Label Switched Paths (LSP) Hierarchy with Generalized 
                       Multi-Protocol Label Switching (GMPLS) Traffic 
                       Engineering (TE) 

RFC4201Standard  Oct 2005    Link Bundling in MPLS Traffic Engineering 

RFC4221 I    Nov 2005    Multiprotocol Label Switching (MPLS) Management Overview 

RFC4220Standard  Nov 2005    Traffic Engineering Link Management Information Base 

RFC4368Standard  Jan 2006    Multiprotocol Label Switching (MPLS) Label-Controlled 
                       ATM and Frame-Relay Management Interface Definition 

RFC4379Standard  Feb 2006    Detecting Multi-Protocol Label Switched (MPLS) Data 
                       Plane Failures 

RFC4378 I    Feb 2006    A Framework for Multi-Protocol Label Switching (MPLS) 
                       Operations and Management (OAM) 

RFC4377 I    Feb 2006    Operations and Management (OAM) Requirements for 
                       Multi-Protocol Label Switched (MPLS) Networks 

RFC4420 PS   Feb 2006    Encoding of Attributes for Multiprotocol Label Switching 
                       (MPLS) Label Switched Path (LSP) Establishment Using 
                       Resource ReserVation Protocol-Traffic Engineering 
                       (RSVP-TE) 

RFC4461 I    Apr 2006    Signaling Requirements for Point to Multipoint Traffic 
                       Engineered MPLS Label Switched Paths (LSPs) 

RFC4561 PS   Jun 2006    Definition of a Record Route Object (RRO) Node-Id 
                       Sub-Object 

RFC4687 I    Sep 2006    Operations and Management (OAM) Requirements for 
                       Point-to-Multipoint MPLS Networks 

RFC4781 PS   Jan 2007    Graceful Restart Mechanism for BGP with MPLS