Technical Summary
This document describes a framework and several scenarios for a
Pseudowire (PW) dual-homing local protection mechanism which avoids
unnecessary switchovers and which can be used for scenarios using a
control plane or not using a control plane. A Dual-Node
Interconnection (DNI) PW is used for carrying traffic between the
dual-homing Provider Edge (PE) nodes for carrying traffic 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.
Working Group Summary
This was a straight-forward design process with no controversy.
The AD discussed with the Chairs and Authors to combine this
document with the companion standards track document, the
preference was to do as two separate documents. There was
some shuffling on the content, e.g. the state diagram was moved
to the standards track document.
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