Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP)
RFC 8077
Document | Type |
RFC - Internet Standard
(February 2017; No errata)
Also known as STD 84
|
|
---|---|---|---|
Authors | Luca Martini , Giles Heron | ||
Last updated | 2020-07-29 | ||
Replaces | draft-ietf-pwe3-rfc4447bis | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | Submitted to IESG for Publication | |
Document shepherd | Stewart Bryant | ||
Shepherd write-up | Show (last changed 2016-08-23) | ||
IESG | IESG state | RFC 8077 (Internet Standard) | |
Consensus Boilerplate | Yes | ||
Telechat date | |||
Responsible AD | Deborah Brungard | ||
Send notices to | draft-ietf-pals-rfc4447bis.all@ietf.org, "Stewart Bryant" <stewart.bryant@gmail.com> | ||
IANA | IANA review state | IANA OK - Actions Needed | |
IANA action state | RFC-Ed-Ack |
Internet Engineering Task Force (IETF) L. Martini, Ed. Request for Comments: 8077 G. Heron, Ed. STD: 84 Cisco Obsoletes: 4447, 6723 February 2017 Category: Standards Track ISSN: 2070-1721 Pseudowire Setup and Maintenance Using the Label Distribution Protocol (LDP) Abstract Layer 2 services (such as Frame Relay, Asynchronous Transfer Mode, and Ethernet) can be emulated over an MPLS backbone by encapsulating the Layer 2 Protocol Data Units (PDUs) and then transmitting them over pseudowires (PWs). It is also possible to use pseudowires to provide low-rate Time-Division Multiplexed and Synchronous Optical NETworking circuit emulation over an MPLS-enabled network. This document specifies a protocol for establishing and maintaining the pseudowires, using extensions to the Label Distribution Protocol (LDP). Procedures for encapsulating Layer 2 PDUs are specified in other documents. This document is a rewrite of RFC 4447 for publication as an Internet Standard. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in Section 2 of RFC 7841. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc8077. Martini & Heron Standards Track [Page 1] RFC 8077 PWE3 Using LDP February 2017 Copyright Notice Copyright (c) 2017 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Martini & Heron Standards Track [Page 2] RFC 8077 PWE3 Using LDP February 2017 Table of Contents 1. Introduction ....................................................4 2. Changes from RFC 4447 ...........................................6 3. Specification of Requirements ...................................6 4. The Pseudowire Label ............................................7 5. Details Specific to Particular Emulated Services ................9 5.1. IP Layer 2 Transport .......................................9 6. LDP .............................................................9 6.1. The PWid FEC Element .......................................9 6.2. The Generalized PWid FEC Element ..........................11 6.2.1. Attachment Identifiers .............................12 6.2.2. Encoding the Generalized PWid FEC Element ..........14 6.2.2.1. PW Interface Parameters TLV ...............15 6.2.2.2. PW Group ID TLV ...........................15 6.2.3. Signaling Procedures ...............................16 6.3. Signaling of Pseudowire Status ............................17 6.3.1. Use of Label Mapping Messages ......................17 6.3.2. Signaling PW Status ................................18 6.3.3. Pseudowire Status Negotiation Procedures ...........19 6.4. Interface Parameter Sub-TLV ...............................20 6.5. LDP Label Withdrawal Procedures ...........................21Show full document text