I am an assigned INT directorate reviewer for draft-ietf-bess-evpn-virtual-eth-segment. These comments were written primarily for the benefit of the Internet Area Directors. Document editors and shepherd(s) should treat these comments just like they would treat comments from any other IETF contributors and resolve them along with any other Last Call comments that have been received. For more details on the INT Directorate, see https://datatracker.ietf.org/group/intdir/about/.

Major Issues:

Minor Issues:

* Section 1.2 talks about this document defining extensions for RFCs 7432 and 7623. Should this document formally update those RFCs?

* I am by no means an EVPN expert, so I am curious if there is additional functionality needed to ensure consistency of ethernet-level configuration options across the vES (e.g., Max Frame Size) given the mix of technologies supported.

Nits:

* General
   - There are multiple instances of confusing sentence structure throughout the document. Highly recommend getting a native English speaker familiar with the technology to make an editorial pass through the document.
   - Are phrases such as "out-of-franchise customer sites" well-known in this community?

* Abstract
   - Using undefined acronyms in the Abstract is a bit confusing.
   - The second-half of the first sentence is difficult to parse.

* Introduction
   - The first sentence has the same parsing issues as the first sentence in the Abstract.