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

"Bocci, Matthew (Nokia - GB)" <matthew.bocci@nokia.com> Mon, 01 July 2019 14:50 UTC

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From: "Bocci, Matthew (Nokia - GB)" <matthew.bocci@nokia.com>
To: "bess@ietf.org" <bess@ietf.org>
CC: "draft-ietf-bess-evpn-na-flags@ietf.org" <draft-ietf-bess-evpn-na-flags@ietf.org>
Thread-Topic: [bess] Document shepherd's review of draft-ietf-bess-evpn-na-flags-03
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Date: Mon, 1 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. 

Thanks

Matthew



On 26/06/2019, 17:46, "BESS on behalf of Bocci, Matthew (Nokia - GB)" <bess-bounces@ietf.org on behalf of matthew.bocci@nokia.com> wrote:

    Authors
    
    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
    
    Matthew
    
    General:
    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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