OpenBGP load balancing between 2 ISP (multihoming)

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From: BARDOU Pierre
Date: Tuesday, October 7, 2008 - 6:40 am

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Hello,
 
I am trying to set up a configuraion like this :
 
             +------- -+       +---------+ 
             |  ISP1   |       |  ISP2   |     Cisco
             | ROUTER  |       | ROUTER  |
             | AS3215  |       | AS12670 |
             +---------+       +---------+
                  |                | 
                  |                |
             +---------+       +---------+ 
             |   BGP   |       |   BGP   |
             | ROUTER  |       | ROUTER  |     OpenBSD 4.3
             | AS47818 |       | AS45818 |
             +---------+       +---------+
                  |                | 
                  |                |
             +-------------------------+
             |    217.109.108.240/28   |
             +-------------------------+
                  |                |
                  |                |
             +--------+        +-------+
             |   FW   |--------|  FW   |       OpenBSD 4.3
             | MASTER | pfsync | SLAVE |
             +--------+        +-------+
                  |                |
                  |                |
             +-------------------------+
             |     PRIVATE NETWORKS    |
             +-------------------------+
 
I'd like to load balance outgoing connections to the internet,
but I don't know how to configure openBGPd to do this.
I searched a lot on the Internet and I found a lot of informations 
on how to do this with cisco, but I have never found an openBGP solution.
Some people speak about it but I have never seen it.

I made a test conf where failover works like a charm (using iBGP on the 
FW's with 'set nexhop self' on BGP routers), but when both connections 
are active only one is used.

Would it be possible to help me please ?
Is setting up iBGP sessions between FW's and BGP routers a good idea ?
Should I rather use OSPF for this ?
And in tha case how to configure it to loadbalance/failover ?

Many thanks

PS : loadbalancing incoming connections too would be very nice, but I 
understood it was much more difficult.

--
Cordialement,
Pierre BARDOU

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Messages in current thread:
OpenBGP load balancing between 2 ISP (multihoming), BARDOU Pierre, (Tue Oct 7, 6:40 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), Frans Haarman, (Tue Oct 7, 9:53 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), Mariusz Makowski, (Tue Oct 7, 12:38 pm)
Re: OpenBGP load balancing between 2 ISP (multihoming), BARDOU Pierre, (Tue Oct 7, 11:31 pm)
Re: OpenBGP load balancing between 2 ISP (multihoming), BARDOU Pierre, (Tue Oct 7, 11:38 pm)
Re: OpenBGP load balancing between 2 ISP (multihoming), cnav@talamasca.pl, (Wed Oct 8, 12:04 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), BARDOU Pierre, (Wed Oct 8, 12:14 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), BARDOU Pierre, (Wed Oct 8, 1:21 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), Frans Haarman, (Wed Oct 8, 1:55 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), Claudio Jeker, (Wed Oct 8, 2:08 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), BARDOU Pierre, (Wed Oct 8, 2:10 am)
Re: OpenBGP load balancing between 2 ISP (multihoming), Simon Slaytor, (Wed Oct 8, 12:23 pm)
Re: OpenBGP load balancing between 2 ISP (multihoming), Simon Slaytor, (Wed Oct 8, 12:50 pm)