Re: [bess] Document shepherd's review of draft-ietf-bess-evpn-na-flags-03

"Bocci, Matthew (Nokia - GB)" <> Mon, 01 July 2019 14:50 UTC

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From: "Bocci, Matthew (Nokia - GB)" <>
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Thread-Topic: [bess] Document shepherd's review of draft-ietf-bess-evpn-na-flags-03
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Date: Mon, 01 Jul 2019 14:50:16 +0000
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Subject: Re: [bess] Document shepherd's review of draft-ietf-bess-evpn-na-flags-03
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Authors, WG,

One further comment on this draft.

In the IANA considerations section you request the creation of a new registry for the "ARP/ND Extended Community Flags octet". The registry has a number of unassigned Flags. However, the draft does not specify a registration policy for this registry.

Please can you propose a suitable registration policy. See section 4 of RFC 8126 for information on the different policies. 



On 26/06/2019, 17:46, "BESS on behalf of Bocci, Matthew (Nokia - GB)" < on behalf of> wrote:

    I am the document shepherd for this draft. Please see below for my comments. Please treat these as you would any other WG last call comments.
    Best regards
    Why do you say the EVPN ARP/ND Extended Community is optional? Don’t you always use it if you comply to the procedures in the draft? Also, I am not clear why in section 3 you say the PE will follow the procedures (which I interpret as a MUST), but there are no MUSTs in e.g. 3a.
    Please clarify in the draft.
    Please also check the capitalization of RFC2119 keywords throughout. For example, there are a few instances where a 'may' should be a 'MAY'
    Abstract and 1. Introduction
    This document proposes an OPTIONAL extended community that is
       advertised ...
    Change to 'this document defines an extended community..."
    Section 1.1 Terminology and Conventions:
    "Address Resolution Protocol (ARP) Requests or Neighbor Discovery (ND) - or Neighbor Solicitation (NS) - messages are replied locally by the PE,"
    This text seems to mix up Neighbor Discovery (the process) with Neighbor Solicitation (the message). I would suggest deleting Neighbor Discovery from this sentence.
    1. Use of the EVPN ARP/ND Extended Community
    A PE may learn the IPv6->MAC pair and its associated ND Flags in the management plane or snooping Neighbor Advertisement messages coming from the CE.
    s/management plane or snooping Neighbor/management plane or by snooping Neighbor
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