Hello,

I have been selected as the Routing Directorate reviewer for this draft. The Routing Directorate seeks to review all routing or routing-related drafts as they pass through IETF last call and IESG review, and sometimes on special request. The purpose of the review is to provide assistance to the Routing ADs. For more information about the Routing Directorate, please see https://wiki.ietf.org/en/group/rtg/RtgDir

Although these comments are primarily for the use of the Routing ADs, it would be helpful if you could consider them along with any other IETF Last Call comments that you receive, and strive to resolve them through discussion or by updating the draft.

Document: draft-name-version
Reviewer: your-name
Review Date: date
IETF LC End Date: date-if-known
Intended Status: copy-from-I-D

Summary:  This document is ready for publication as a Proposed Standard.
    I do have one question that I would appreciate being considered.

Comments:
    The document is clear and readable, with careful references for those needing additional details.

Major Issues: None


Minor Issues:
    I note that the security considerations (section 6) does refer to congestion issues caused by excessive transmission of BFD requests.   I wonder if section 5 ("Operation of Multipoint BFD with Active Tail over P2MP MPLS LSP") should include a discussion of the congestion implications of multiple tails sending notifications at the rate of 1 per second to the head end, particularly if the failure is near the head end.  While I suspect that the 1 / second rate is low enough for this to be safe, discussion in the document would be helpful.