[169567] in North American Network Operators' Group
Re: AS path not optimal
daemon@ATHENA.MIT.EDU (David Miller)
Tue Mar 4 00:38:12 2014
Date: Tue, 04 Mar 2014 00:37:37 -0500
From: David Miller <dmiller@tiggee.com>
To: nanog@nanog.org
In-Reply-To: <CAAtfGYgWn13hjH4VCyS5tpOWjAV=bf31o3SVnNGqzmJL+1un-A@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
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On 03/03/2014 10:16 PM, ku po wrote:
> One of my client has peering with nlayer and a provider from Asia. It s=
eems
> from one major ISP in US, the best path is through this Asia provider,=
> instead of through nlayer which we want it to be.
>=20
> It seems this major ISP does not have a direct peering with nlayer AS 4=
436
> is the cause of this problem.
>=20
> What is the best way to address this problem?
>=20
Add BGP communities to your client's announcements directing the Asia
provider to prepend their AS X times (whatever value of X works best for
you) on passing your client's prefixes to that major ISP in the US.
The Asia provider should be able to provide you a list of their BGP
control communities.
-DMM
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