[mpls] MPLS-RT review of draft-mirsky-mpls-p2mp-bfd-04

["Andrew G. Malis" <[e-mail]>]

I’ve been selected as an MPLS-RT reviewer for
draft-mirsky-mpls-p2mp-bfd-04, which is currently a candidate for MPLS WG
adoption. This draft documents procedures for using BFD for multipoint
networks to detect data plane failures in MPLS p2mp LSPs.

The BFD WG has been working on draft-ietf-bfd-multipoint, which describes
BFD procedures for multipoint and multicast networks.
draft-mirsky-mpls-p2mp-bfd uses that draft as a basis to detect MPLS data
plane failures for p2mp LSPs. This is a straightforward and useful
application of the BFD draft for MPLS data plane failure detection.

However, I would have expected to see at least a reference to RFC 4687,
"Operations and Management (OAM) Requirements for Point-to-Multipoint MPLS
Networks", and some text on how this draft addresses the requirements in
that draft.

I also expected more text on the relationship between this draft and RFC
6425, "Detecting Data-Plane Failures in Point-to-Multipoint MPLS -
Extensions to LSP Ping"', and more of an explanation of why the keyword MAY
is used in sections 4.1 and 4.2 - what are the implications of following or
not following the MAY in each case?

The draft also needs an editing pass, for example "MaultipointHead"
for "MultipointHead"
and some incorrect English grammar in several places.

Once these items have been addressed, I think that the draft should be
ready for an adoption call.

Cheers,
Andy