nanog mailing list archives

Re: Inexpensive software bgp router that supports route tags?


From: David H <ispcolohost () gmail com>
Date: Wed, 1 Jul 2015 15:47:29 -0400

Sorry I wasn't clear on that.  Traditionally on a hardware, e.g.
cisco/brocade, router performing the RTBH role, I'd add blackhole routes by
way of static routes with a particular tag; one tag for block this source,
one tag for block this destination.  Redistribute static would let route
maps operate against those tags to turn into bgp communities being applied
to the announcements, and then the real routers can do what they need to
do.  When I tried out Quagga/Zebra as an alternative, it doesn't work this
way, so while it was nice that it could pick up static routes from the OS,
or have them added manually just like a hardware router, there was no
concept of the route tag getting to Zebra for it to do the rest of the work
on the BGP side.

I'll check out Bird too; thanks.

On Wed, Jul 1, 2015 at 3:41 PM, Job Snijders <job () instituut net> wrote:

On Wed, Jul 01, 2015 at 11:19:45AM -0400, David H wrote:
I was wondering if anyone can recommend a software (preferable), or
hardware-based router with an API, that supports BGP with tags on
advertised routes?  I want to use it for a RTBH feed [ ... ]

Did you look at BIRD? It is one of the most beautiful open source BGP
speakers: http://bird.network.cz/

BIRD does not have anything like an restful API, but you can just
generate the config file and reload it on the fly to accomplish the
same.

Can you elaborate on what you mean with 'tags'? Could you use BGP
communities instead?

Kind regards,

Job



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