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

"Jakob Heitz (jheitz)" <jheitz@cisco.com> Fri, 04 November 2016 04:06 UTC

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From: "Jakob Heitz (jheitz)" <jheitz@cisco.com>
To: Geoff Huston <gih@apnic.net>, IETF IDR WG <idr@ietf.org>
Thread-Topic: [Idr] Review of draft-ietf-large-community-06.txt
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Date: Fri, 4 Nov 2016 04:05:53 +0000
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Cc: "rtg-dir@ietf.org" <rtg-dir@ietf.org>, Susan Hares <shares@ndzh.com>
Subject: Re: [Idr] Review of draft-ietf-large-community-06.txt
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To explain this one, it was originally "Textual Representation"
and it was with colons only. Then we discovered that Bird uses
commas as a separator. Since that does not degrade the utility,
we allowed it. The real point is that it has to be exactly
3 positive decimal integers. If some implementations only offered hexadecimal
or used 6 int16's then it would become very difficult for ISPs
to communicate community settings to customers.
I can change it to a single representation and detail the allowed
deviations from it.

Jakob.


> 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.