[105906] in North American Network Operators' Group
Re: Building a BGP test network
daemon@ATHENA.MIT.EDU (Ariel Biener)
Wed Jul 9 13:36:26 2008
From: Ariel Biener <ariel@fireball.tau.ac.il>
To: nanog@nanog.org
Date: Wed, 9 Jul 2008 20:36:11 +0300
In-Reply-To: <4874D898.50805@network-i.net>
Errors-To: nanog-bounces@nanog.org
On Wednesday 09 July 2008 18:26, Howard Jones wrote:
> I've done this in the (distant) past by taking the output from 'show ip
> route' from one of our live transit routers, and awking it into a load
> of 'route add' commands on a spare FreeBSD box. Run quagga on that, and
> hook it into your test network. I needed to change some sysctl
> parameters to allow for that many routes though - and that was when it
> was 90K routes, not 230K :-)
I might be missing something, but this is not emulating the real thing,
since all the AS paths are gone, aren't they ? All the natural BGP environment
is also gone, since show ip route will only show the route that ended up
in the RIB, while show ip bgp might show a few paths to a route, with
one of them being best.
I have been pondering over this issue for some time now (not too much
time to invest on it), since I wanted to created a duplicate model of our
production network in a test environment, not connected to any outside
network (thus cannot peer, same problem as described here).
--Ariel
--
Ariel Biener
e-mail: ariel@post.tau.ac.il
PGP: http://www.tau.ac.il/~ariel/pgp.html
