Last Call Review of draft-ietf-mpls-retire-ach-tlv-02

Request Review of draft-ietf-mpls-retire-ach-tlv
Requested rev. no specific revision (document currently at 03)
Type Last Call Review
Team Security Area Directorate (secdir)
Deadline 2013-07-31
Requested 2013-07-18
Other Reviews Genart Last Call review of -02 by Pete McCann (diff)
Review State Completed
Reviewer Alexey Melnikov
Review review-ietf-mpls-retire-ach-tlv-02-secdir-lc-melnikov-2013-08-08
Posted at
Reviewed rev. 02 (document currently at 03)
Review result Ready
Draft last updated 2013-08-08
Review completed: 2013-08-08


I reviewed this document as part of the security directorate's ongoing 

effort to review all IETF documents being processed by the IESG.  These 

comments were written primarily for the benefit of the security area 

directors.  Document editors and WG chairs should treat these comments 

just like any other last call comments.

This document updates RFC 5586 by retiring ACH TLVs (an MPLS 

extensibility mechanism) and removing the associated IANA registry.

The Security Considerations section states that by removing an unused 

feature of MPLS security of implementations is improved. I tend to 

agree, simplicity is a good thing.

It also states that the removed feature can be used to secure messages 

on the G-ACh in a generic way, but that no such mechanism was proposed 

so far. I think this is a fair comment.

I think the Security Considerations section is quite reasonable for this 

document. I don't have any issues with this document.