[79479] in North American Network Operators' Group
Re: AS prepending
daemon@ATHENA.MIT.EDU (David Barak)
Fri Apr 8 12:35:04 2005
Date: Fri, 8 Apr 2005 09:34:40 -0700 (PDT)
From: David Barak <thegameiam@yahoo.com>
To: Philip Lavine <source_route@yahoo.com>,
Mark Kasten <mark.kasten@savvis.net>, nanog <nanog@merit.edu>
In-Reply-To: <20050408160559.18255.qmail@web51902.mail.yahoo.com>
Errors-To: owner-nanog@merit.edu
--- Philip Lavine <source_route@yahoo.com> wrote:
>
> Update 2:
>
> More info. When I have tested the failover by
> pulling
> the plug on the preferred ISP, I do not see my
> network
> in looking glass. Secondly, the backup provider has
> told me the the route is not in the (rib).
>
> Philip
Have you verified that you're advertising the routes
to them? In Cisco-speak, does
sh ip bgp nei x.x.x.x adv
return what you're expecting?
Also, assuming that your backup ISP is either directly
connected to (or one transit hop away from) your
primary ISP, 3 prepends is too many for what you want.
Try 1 prepend first.
David Barak
Need Geek Rock? Try The Franchise:
http://www.listentothefranchise.com
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