[83369] in North American Network Operators' Group
Re: Providers that support prepending to specific remote AS's?
daemon@ATHENA.MIT.EDU (Charles Gucker)
Thu Aug 11 22:53:11 2005
X-Envelope-To: <nanog@merit.edu>
Date: Thu, 11 Aug 2005 19:32:18 -0700
From: Charles Gucker <cgucker@onesc.net>
To: David Hubbard <dhubbard@dino.hostasaurus.com>
Cc: nanog@merit.edu
In-Reply-To: <FCD26398C5EDE746BFC47F43EA52A1730121D7CF@dino.int.hostasaurus.com>
Errors-To: owner-nanog@merit.edu
On Thu, Aug 11, 2005 at 08:06:09PM -0400, David Hubbard wrote:
> Hi all, I'd appreciate any on or offlist emails
> with the names of larger providers that allow
> you, through communities, to do prepending of
> your AS path to selected remote AS's. We use two
> providers that allow this since we use the feature
> but am wanting to dump one of our providers who
> does not.
I guess cutting to the chase here would be best.
I have been collecting BGP community guides for a number
of service providers who publically state their BGP
communities and their usage. This would include your
desired abilities.
You can find the collection at:
http://www.onesc.net/communities
For a quick shameless plug, if anybody has additional
community guide locations, big or small, please let me know
offlist.
> Basically we have a customer within AS X and us
> and AS X both have transit through AS Y. The link
> between AS Y and AS X is seriously overloaded so our
> customer is pretty much dead in the water since AS X
> is a countrywide monopoly telco for the country in
> question. We've forced traffic to AS X to take
> a different route in but since we can't path prepend
> just to AS X through AS Y, we're stuck with the
> only solution being disable the link to AS Y or
> prepend to all of AS Y which we don't want to do.
> AS Y doesn't feel the need to help since their view
> is the customer of theirs has chosen to not upgrade
> the oversubscribed link.
Hrm, sounds like you'd really make out from being
able to tell your upstream to surpress the announcements out
to that network, provided they aren't a customer of the
upstream that is ;-) Keep in mind, if they are a customer
the communities, in most cases, will not the results you are
looking for.
charles
