Building a BGP test network
Ariel Biener
ariel at fireball.tau.ac.il
Wed Jul 9 17:36:11 UTC 2008
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 at post.tau.ac.il
PGP: http://www.tau.ac.il/~ariel/pgp.html
More information about the NANOG
mailing list