[163519] in North American Network Operators' Group
Re: Single AS multiple Dirverse Providers
daemon@ATHENA.MIT.EDU (Bruce Pinsky)
Mon Jun 10 13:37:32 2013
Date: Mon, 10 Jun 2013 10:36:53 -0700
From: Bruce Pinsky <bep@whack.org>
To: NANOG list <nanog@nanog.org>
In-Reply-To: <FF9419BD-E7DB-4C51-B6F4-1F8B2691CFCC@ianai.net>
Reply-To: bep@whack.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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Patrick W. Gilmore wrote:
>> however, providers a/b at site1 do not send us the two /24s from
>> site b..
>
> This is probably incorrect.
>
> The providers are almost certainly sending you the prefixes, but your router is dropping them due to loop detection. To answer your later question, this is the definition of 'standard' as it is written into the RFC.
>
> Use the allow-as-in style command posted later in this thread to fix your router.
>
Or maintain "standard" behavior by running a GRE tunnel between the two
discontinuous sites and run iBGP over the tunnel.
- --
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bep
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