[119237] in North American Network Operators' Group
RE: BGP Traffic Engineering question
daemon@ATHENA.MIT.EDU (Drew Weaver)
Tue Nov 10 13:37:06 2009
From: Drew Weaver <drew.weaver@thenap.com>
To: 'Jeffrey Lyon' <jeffrey.lyon@blacklotus.net>
Date: Tue, 10 Nov 2009 13:36:17 -0500
In-Reply-To: <16720fe00911101033k2abdd7b9y6c5165ea11e92d30@mail.gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Sure, it still works however (for now).
-Drew
-----Original Message-----
From: jeffrey.lyon@gmail.com [mailto:jeffrey.lyon@gmail.com] On Behalf Of J=
effrey Lyon
Sent: Tuesday, November 10, 2009 1:34 PM
To: Drew Weaver
Cc: nanog@nanog.org
Subject: Re: BGP Traffic Engineering question
Isn't Route Science EOL?
Jeff
On Tue, Nov 10, 2009 at 1:31 PM, Drew Weaver <drew.weaver@thenap.com> wrote=
:
> Howdy,
>
> If you have several transit providers connected to your network and much =
of your traffic is generally directed by the "BGP tiebreaker" (i.e. lowest =
IP address) is there a way, without specifying on a per-prefix basis to pre=
fer the "tie breaker winner" slightly less often? I don't want to "complete=
ly flip" the preference so that it just saturates a different link, I am ju=
st trying to see if there is any good way to influence the "natural" select=
ion method.
>
> We have 6 transit providers, and Level3 always wins because it is 4/8, no=
rmally this isn't a problem because we have traffic engineering systems (ro=
ute science/avaya) which move traffic away from that link, but if we need t=
o reboot the RS, or something catastrophic happens we would like it to spre=
ad out a little more evenly.
>
> Anyone have any thoughts on this?
>
> -Drew
>
>
>
--=20
Jeffrey Lyon, Leadership Team
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