Routing issues

[dspazman at epicup.com]

Sorry, should have been a little clearer.

I have tried setting up my routing like:
http://lartc.org/howto/lartc.rpdb.multiple-links.html

And my bird setup is like:
https://git.nic.cz/redmine/projects/bird/wiki/BGP_filtering
(it is down right now, but you can use google cache to still see it)

for the two /29 IP networks I have, one from Cogent, one from HE.  I also have a /22 that I am announcing over BGP.

The end result is to have a BGP router using two connections to announce my /22 using my ASN, from the bird router I need to be able to send out requests from my /22 over both interfaces (I have them weighted in the bird config file so one gets more traffic).

I guess what I am asking is if this sounds like it is the correct setup?  I don't need someone to babysit me through the whole process, I just want to make sure I'm not going down a rabbit hole and completely missing something.

I'll be done with bugging the whole list now.  If I could get a confirmation still that that is the correct route to take, that would be great.  Setting up 2 routing tables like the first article, and then setting up bird like the BGP filtering article.  I just didn't know if I should be setting up the 2 routing tables, or if the decision on the outbound routing was entirely bird.  If anyone wanted to help more and contact me directly I could provide more specific information as well, but that's not required, and I don't want to be any trouble to the group in general.

Thanks again!



-----Original Message-----
From: "Martin Barry" <marty at supine.com>
Sent: Sunday, December 4, 2011 6:29am
To: bird-users at atrey.karlin.mff.cuni.cz
Subject: Re: Routing issues

$quoted_author = "dspazman at epicup.com" ;
> 
> I had bird installed on a server with one outside connection (eth2).
> That's been working fine.  When I add in the second connection, for
> whatever reason I can't get it added to the routing.  I'm curious if
> anyone has any suggestions?

You are probably running into a combination of your default route pointing
out your existing provider and their strict uRPF blocking source IP's from
your Cogent range.


> I'm not sure if this is directly bird related, but I think it is...  Any
> tips or ideas would be greatly appreciated.

This is not bird related. If you want this to work you need to route packets
with a Cogent source IP out via your Cogent link. For that you'll need to do
some policy based routing using the source IP as the filter.

e.g. http://muchtall.com/2007/08/06/24/

cheers
Marty