Dual-Homing Protection for MPLS and the MPLS Transport Profile (MPLS-TP) Pseudowires (RFC8184)
Original Publication Date: 2017-Jun-01
Included in the Prior Art Database: 2017-Jun-27
Internet Society Requests For Comment (RFCs)
W. Cheng: AUTHOR [+5]
[RFC6372] and [RFC6378] describe the framework and mechanism of MPLS Transport Profile (MPLS-TP) linear protection, which can provide protection for the MPLS Label Switched Path (LSP) or pseudowire (PW) between the edge nodes. This mechanism does not protect against failure of the Attachment Circuit (AC) or the Provider Edge (PE) node. [RFC6718] and [RFC6870] describe the framework and mechanism for PW redundancy to provide protection against AC or PE node failure. The PW redundancy mechanism is based on the signaling of the Label Distribution Protocol (LDP), which is applicable to PWs with a dynamic control plane. [RFC8104] describes a fast local repair mechanism for PW egress endpoint failures, which is based on PW redundancy, upstream label assignment, and context-specific label switching. The mechanism defined in [RFC8104] is only applicable to PWs with a dynamic control plane.
Internet Engineering Task Force (IETF) W. Cheng Request for Comments: 8184 L. Wang Category: Informational H. Li ISSN: 2070-1721 China Mobile S. Davari Broadcom Corporation J. Dong Huawei Technologies June 2017
Dual-Homing Protection for MPLS and the MPLS Transport Profile (MPLS-TP) Pseudowires
This document describes a framework and several scenarios for a pseudowire (PW) dual-homing local protection mechanism that avoids unnecessary switchovers and does not depend on whether a control plane is used. A Dual-Node Interconnection (DNI) PW is used to carry traffic between the dual-homing Provider Edge (PE) nodes when a failure occurs in one of the Attachment Circuits (AC) or PWs. This PW dual-homing local protection mechanism is complementary to existing PW protection mechanisms.
Status of This Memo
This document is not an Internet Standards Track specification; it is published for informational purposes.
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). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see 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/rfc8184.
al. Informational [Page 1]
RFC 8184 Dual-Homing PW Protection June 2017
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