Multiprotocol Label Switching (mpls) ------------------------------------ Charter Last Modified: 2008-08-21 Current Status: Active Working Group Chair(s): George Swallow Loa Andersson Routing Area Director(s): Ross Callon David Ward Routing Area Advisor: Ross Callon Mailing Lists: General Discussion:mpls@lists.ietf.org To Subscribe: https://www1.ietf.org/mailman/listinfo/mpls Archive: http://www.ietf.org/mail-archive/web/mpls/current/maillist.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 management objects (e.g. as part of MIB modules) and OAM techniques 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 - Include extensions to the MPLS WG protocols and RFCs necessary to create an MPLS Transport Profile (MPLS TP). The work on the MPLS TP will be coordinated between the working groups (eg, MPLS, CCAMP, PWE3, and L2PVN) that are chartered to do MPLS TP work. 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 Done Submit document(s) specifying protocol extensions, enhancements and mechanisms for setup of P2MP TE LSPs Done Submit point to multipoint TE MIB to IESG as proposed standard Nov 2008 Submit EXP field clarification document to IESG as proposed standard Dec 2008 Submit a specification on Soft Pre-emption of LSP Tunnels to the IESG for publication as a Proposed Standard Jan 2009 Submit LDP extensions for P2MP LSPs Mar 2009 Submit MPLS security framework for publication as an informational RFC Jun 2009 Submit requirements for point-to-multipoint extensions to LDP Internet-Drafts: Posted Revised I-D Title ------ ------- -------------------------------------------- Jul 2002 Sep 2008 Multiprotocol Label Switching (MPLS) Traffic Engineering Management Information Base for Fast Reroute Apr 2003 Nov 2008 MPLS Traffic Engineering Soft Preemption Sep 2005 Sep 2008 Detecting Data Plane Failures in Point-to-Multipoint Multiprotocol Label Switching (MPLS) - Extensions to LSP Ping Sep 2006 Apr 2008 Point-to-Multipoint Multiprotocol Label Switching (MPLS) Traffic Engineering (TE) Management Information Base (MIB) module Apr 2007 Nov 2008 Proxy LSP Ping May 2007 Mar 2008 LDP Capabilities May 2007 Aug 2008 Node behavior upon originating and receiving Resource ReserVation Protocol (RSVP) Path Error message Sep 2007 Nov 2008 Security Framework for MPLS and GMPLS Networks Oct 2007 Dec 2008 An Analysis of Scaling Issues in MPLS-TE Core Networks Mar 2008 Dec 2008 LDP IGP Synchronization May 2008 Dec 2008 Multi-Protocol Label Switching (MPLS) label stack entry: "EXP" field renamed to "Traffic Class" field Jun 2008 Sep 2008 Mechanism for performing LSP-Ping over MPLS tunnels Jul 2008 Jan 2009 LDP End-of-LIB Aug 2008 Nov 2008 PathErr Message Triggered MPLS and GMPLS LSP Reroute Nov 2008 Jan 2009 MPLS-TP Requirements Nov 2008 Nov 2008 A Framework for MPLS in Transport Networks Dec 2008 Jan 2009 MPLS Generic Associated Channel Dec 2008 Dec 2008 Requirements for OAM in MPLS Transport Networks Dec 2008 Dec 2008 Requirements for Label Edge Router Forwarding of IPv4 Option Packets 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 RFC3209 PS Dec 2001 RSVP-TE: Extensions to RSVP for LSP Tunnels RFC3210 I Dec 2001 Applicability Statement for Extensions to RSVP for LSP-Tunnels RFC3215 I Feb 2002 LDP State Machine RFC3214 PS Feb 2002 LSP Modification Using CR-LDP RFC3213 I Feb 2002 Applicability Statement for CR-LDP RFC3212 PS Feb 2002 Constraint-Based LSP Setup using LDP 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 RFC3479 PS Feb 2003 Fault Tolerance for the Label Distribution Protocol (LDP) RFC3478 PS Feb 2003 Graceful Restart Mechanism for Label Distribution Protocol RFC3468 I Feb 2003 The MPLS Working Group decision on MPLS signaling protocols 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 RFC4377 I Feb 2006 Operations and Management (OAM) Requirements for Multi-Protocol Label Switched (MPLS) Networks RFC4378 I Feb 2006 A Framework for Multi-Protocol Label Switching (MPLS) Operations and Management (OAM) RFC4379Standard Feb 2006 Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures 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 RFC4817 PS Mar 2007 Encapsulation of MPLS over Layer 2 Tunneling Protocol Version 3 RFC4859 I Apr 2007 Codepoint Registry for The Flags Field in the Resource Reservation Protocol Traffic Engineering (RSVP-TE) Session Attribute Object RFC4875 PS May 2007 Extensions to Resource Reservation Protocol - Traffic Engineering (RSVP-TE) for Point-to-Multipoint TE Label Switched Paths (LSPs) RFC4928BCP Jun 2007 Avoiding Equal Cost Multipath Treatment in MPLS Networks RFC4950 PS Aug 2007 ICMP Extensions for MultiProtocol Label Switching RFC5036 DS Oct 2007 LDP Specification RFC5037 I Oct 2007 Experience with the Label Distribution Protocol (LDP) RFC5038 I Oct 2007 The Label Distribution Protocol (LDP) Implementation Survey Results RFC5283 PS Jul 2008 LDP extension for Inter-Area Label Switched Paths (LSPs) RFC5331 PS Aug 2008 MPLS Upstream Label Assignment and Context-Specific Label Space RFC5332 PS Aug 2008 MPLS Multicast Encapsulations RFC5330 PS Oct 2008 A Link-Type sub-TLV to Convey the Number of Traffic Engineering Label Switched Paths Signalled with Zero Reserved Bandwidth across a Link