Re: [Idr] Review of draft-ietf-large-community-06.txt

Geoff Huston <gih@apnic.net> Fri, 04 November 2016 01:25 UTC

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From: Geoff Huston <gih@apnic.net>
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Date: Fri, 4 Nov 2016 12:25:08 +1100
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To: heasley <heas@shrubbery.net>
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Cc: IETF IDR WG <idr@ietf.org>, Susan Hares <shares@ndzh.com>, rtg-dir@ietf.org
Subject: Re: [Idr] Review of draft-ietf-large-community-06.txt
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> On 4 Nov. 2016, at 11:47 am, heasley <heas@shrubbery.net> wrote:
> 
> 
>> 7. ----------------
>> 
>> 4.  Canonical Representation
>> 
>> I am confused here - this section used an example with TWO canonical
>> representations:
>> 
>>   "For example: 64496:4294967295:2, 64496:0:0, or (64496, 111, 222)."
>> 
>> 
>> Conventionally, it's better to use a single canonical representation, so the
>> authors should pick either a colon-delimited list, or a bracketed comma+space
>> separated object.
> 
> Are you sure; a separator is not defined in the text.

If the “Canonical Representation” is to represent the Large Communities Attributes value 
as a sequence of triplets, where the triplet is three unsigned decimal values, but not to
define the representation of the delimiter between the elements of the triplet, nor the delineator
between successive triplets, then I think that this is an incomplete canonical
representation.

cheers,

  Geoff