Dual-Homing Coordination for MPLS Transport Profile (MPLS-TP) Pseudowires Protection (RFC8185)
Original Publication Date: 2017-Jun-01
Included in the Prior Art Database: 2017-Jun-27
Internet Society Requests For Comment (RFCs)
W. Cheng: AUTHOR [+4]
[RFC6372], [RFC6378], and [RFC7771] describe the framework and mechanism of MPLS Transport Profile (MPLS-TP) linear protection, which can provide protection for the MPLS Label Switched Path (LSP) and pseudowires (PWs) between the edge nodes. These mechanisms cannot protect against the failure of the Attachment Circuit (AC) or the edge nodes. [RFC6718] and [RFC6870] specify the PW redundancy framework and mechanism for protecting the AC or edge node against failure by adding one or more edge nodes, but it requires PW switchover in case of an AC failure; also, PW redundancy relies on Packet Switched Network (PSN) protection mechanisms to protect against the failure of PW.
Internet Engineering Task Force (IETF) W. Cheng Request for Comments: 8185 L. Wang Category: Standards Track H. Li ISSN: 2070-1721 China Mobile J. Dong Huawei Technologies A. D'Alessandro Telecom Italia June 2017
Dual-Homing Coordination for MPLS Transport Profile (MPLS-TP) Pseudowires Protection
In some scenarios, MPLS Transport Profile (MPLS-TP) pseudowires (PWs) (RFC 5921) may be statically configured when a dynamic control plane is not available. A fast protection mechanism for MPLS-TP PWs is needed to protect against the failure of an Attachment Circuit (AC), the failure of a Provider Edge (PE), or a failure in the Packet Switched Network (PSN). The framework and typical scenarios of dual- homing PW local protection are described in RFC 8184. This document proposes a dual-homing coordination mechanism for MPLS-TP PWs that is used for state exchange and switchover coordination between the dual- homing PEs for dual-homing PW local protection.
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/rfc8185.
al. Standards Track [Page 1]
RFC 8185 Dual-Homing Coordination for MPLS-TP PWs June 2017
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