BGP testbed tools

Tue Jan 12 23:13:38 UTC 2010

On 2010-01-12 21:27, Ben Jencks wrote:
> This is obviously a rookie question, but I haven't found anything by
> searching. I'm looking to set up a small testbed to simulate our
> internal network topology, and I want to have a realistic BGP table
> from the fake "upstream" routers. Ideally what I'd like to do is dump
> the BGP table from our production routers, strip the immediate
> neighbor AS, and load the table into Quagga or OpenBGPD to advertise.
> I'm running into two problems: how do you dump BGP tables in a
> machine-parseable format from IOS, and how do you make the route
> server advertise the routes as they were in the original table,
> including the full AS-path, communities, etc? If Quagga/OpenBGPD
> aren't the right tools, I'm happy to use something else.

Use libbgpdump from ris.ripe.net to get raw data from
http://data.ris.ripe.net/ (you're looking for newest bview file),
and dump them using bgpdump to something easily to parse. Then
using bgpsimple (from googlecode) simulate a peer with specific
number of prefixes advertised - up to the limit of the contents
of the file. You can spoof next-hop, AS, etc. As for the attribute
manipulation, fire up a couple of VMWare/VirtualBox/vimage instances
with quagga/openbgpd to accept the prefixes from bgpsimple and
mangle them in some manner.

Here you go.

-- 
"Everything will be okay in the end. |                  Łukasz Bromirski
 If it's not okay, it's not the end. |       http://lukasz.bromirski.net