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Re: [Idr] Request to adopt draft-heitz-idr-large-community - Working Group Adoption call (9/6 to 9/20)

Jared Mauch <jared@puck.nether.net> Wed, 14 September 2016 22:54 UTC

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From: Jared Mauch <jared@puck.nether.net>
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Date: Wed, 14 Sep 2016 18:54:53 -0400
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To: John Heasley <heas@shrubbery.net>
Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/XlQG3YbavyM7iqcwfQIJkMDZlY4>
Cc: "idr@ietf.org" <idr@ietf.org>, Susan Hares <shares@ndzh.com>, Robert Raszuk <robert@raszuk.net>
Subject: Re: [Idr] Request to adopt draft-heitz-idr-large-community - Working Group Adoption call (9/6 to 9/20)
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I would highlight this thought. Just because the ASN is mapped into these 4 bytes, be careful with your assumptions. It may or may not have relevance based on someone else's opaque numbering system. This is less defined than it seems, even though some of us have a structure we plan to map into it. 

Jared Mauch

On Sep 14, 2016, at 6:42 PM, John Heasley <heas@shrubbery.net> wrote:

>> On the egress, you can test the context-ASN for peer-ASN before sending.
> 
> This check should not be done, because you can not guess which ASes are 
> beyond peer-ASN and they may intentionally be the target.

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