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Re: [Idr] WGLC on draft-ietf-idr-as-private-reservation-00

"Susan Hares" <shares@ndzh.com> Thu, 20 December 2012 23:24 UTC

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From: Susan Hares <shares@ndzh.com>
To: 'Nick Hilliard' <nick@foobar.org>, 'Jon Mitchell' <jrmitche@puck.nether.net>
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Date: Thu, 20 Dec 2012 18:24:08 -0500
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Cc: idr@ietf.org
Subject: Re: [Idr] WGLC on draft-ietf-idr-as-private-reservation-00
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Nick:

I'd be interested in you suggesting the situations would be valid to leak
the AS private path AS to a peer, before we downgrade to a "SHOULD". 

Sue 

-----Original Message-----
From: Nick Hilliard [mailto:nick@foobar.org] 
Sent: Thursday, December 20, 2012 6:03 PM
To: Jon Mitchell
Cc: Susan Hares; 'Randy Bush'; idr@ietf.org; stbryant@cisco.com
Subject: Re: [Idr] WGLC on draft-ietf-idr-as-private-reservation-00

On 20/12/2012 22:38, Jon Mitchell wrote:
> I'm comfortable making the change to a capital MUST for this sentence 
> and adding the appropriate reference to RFC 2119 as necessary.  I'm 
> just not comfortable telling operators how to perform that action as 
> there are a number of options to do so, which was my point to David 
> (and he seemed to be ok with).  I will make the changes as necessary 
> to the abstract where this statement exists as well.

If it's of interest, rfc 6666 ran into much the same issue recently with the
issue of leaking the rtbh prefix to ebgp peers.  We decided on SHOULD rather
than MUST because there probably were situations where there might be valid
operational reasons for leaking the prefix to a peer. I would think the same
arguments hold for a private ASN range.

http://tools.ietf.org/html/rfc6666#section-5

Nick

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