Technical Summary
In some scenarios, MPLS Transport Profile (MPLS-TP) Pseudowires (PWs)
(RFC 5921) may be statically configured (management plane based),
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
[draft-ietf-pals-mpls-tp-dual-homing-protection]. This document
proposes a dual-homing coordination mechanism for MPLS-TP PWs, which
is used for state exchange and switchover coordination between the
dual-homing PEs for dual-homing PW local protection.
Working Group Summary
This was a straight-forward design process with no controversy.
The AD did discuss with the Chairs and Authors on combining
this document and the companion Informational document,
though the preference was to maintain two documents.
Document Quality
Dual homed protection is important for mobile services, and the
need for this is called out in BBF TR-221 " Technical Specifications
for MPLS in Mobile Backhaul Networks" where it remains for
further study.
Please see https://www.broadband-forum.org/technical/download/TR-221.pdf
Personnel
Who is the Document Shepherd for this document? Stewart Bryant
Who is the Responsible Area Director? Deborah Brungard