Éric Vyncke has entered the following ballot position for
draft-ietf-bess-evpn-mh-split-horizon-10: No Objection

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COMMENT:
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# Éric Vyncke, INT AD, comments for draft-ietf-bess-evpn-mh-split-horizon-10

Thank you for the work put into this document. I found the writing quite
convoluted and not easy to follow, especially about what is modified from RFC
7432 and others.

Please find below some non-blocking COMMENT points (but replies would be
appreciated even if only for my own education), and some nits.

Special thanks to Jeff Zhang for the shepherd's write-up including the WG
consensus and the justification of the intended status.

I hope that this review helps to improve the document,

Regards,

-éric

# COMMENTS (non-blocking)

## Relevance to BESS ?

Wondering whether this work fits well within BESS charter; some EVPN (e.g.,
VXLAN) are deployed without using BGP and still require split-horizon (if not
mistaken).

Strongly suggest to add BGP in the title of this document (and abstract) to
make it clear that this is about BGP and not EVPN.

## Abstract

`to select the appropriate Split Horizon procedure` does it mean that the other
procedure is *not* appropriate or simply *less* appropriate ?

## Section 1

Suggest to clearly define "split horizon" rather than simply burry it in `Split
Horizon procedures employed to prevent looped frames`.

## Section 1.1

s/link-local broadcasts/link-layer broadcasts/ ? what about other
unknown/multicast traffic ?

Several acronyms (e.g., "BUM") keep being expanded in the following sections.

## Section 2.1

Just wondering where the RED bits are defined (they seems to overwrite the
single-active bit of section 2), please add a reference to RFC 7432.

Also, is there a reason why the SHT bits are not adjacent to the RED ones ?

# NITS (non-blocking / cosmetic)

## Section 1.1

s/ethernet/Ethernet/ (possibly in other places)

Be consistent "Segment *R*outing" vs. "Segment *r*outing" ;-)

## Section 2

Please add markers for 10, 20, ... on figure 1



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