Re: [sidr] [Idr] AS_SET depreciation (RFC6472) and BGP multipath

Paul Jakma <paul@jakma.org> Wed, 28 March 2012 16:01 UTC

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Date: Wed, 28 Mar 2012 17:01:18 +0100 (BST)
From: Paul Jakma <paul@jakma.org>
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To: Jakob Heitz <jakob.heitz@ericsson.com>
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Cc: "idr@ietf.org List" <idr@ietf.org>, sidr wg list <sidr@ietf.org>
Subject: Re: [sidr] [Idr] AS_SET depreciation (RFC6472) and BGP multipath
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On Wed, 28 Mar 2012, Jakob Heitz wrote:

> The issue is SIDR can not aggregate multiple paths.

> Should SIDR work on path aggregation?

If we ever want to make routing state scale sub-linearly (i.e. make IDR 
"compact") in the size of the internet, then we're almost certainly going 
to need some form of conglomeration of routing information in some shape 
or form. Still having support for aggregation in BGP could then be useful.

It'd be a shame if we ended up having to choose between scalable and 
secure routing.

(OTOH scalable routing is potentially so far off in the future, and might 
be so different, that it's hard to say what level of extra engineering or 
overhead, if any would be justified for SIDR).

regards,
-- 
Paul Jakma  paul@jakma.org  twitter: @pjakma  PGP: 64A2FF6A
Fortune:
COBOL:
 	Completely Over and Beyond reason Or Logic.