Help with Route Reflector and BGP multipath.

Arnaud Houdelette-Langlois arnaud.houdelette at normandie-univ.fr
Fri Mar 3 14:30:09 CET 2023


Hi.

We are using bird for BGP/OSPF routing on our FreeBSD routers/firewalls 
for quite some time now.

I'm trying to setup linux server load-balancing using ExaBGP, and bird 
as Route-Reflectors.

Between the bird machines and linux servers, we got Force10 L3 switchs, 
also setup as route-reflector clients.

I have no problem setting up the BGP sessions, bird receives both routes 
from the 2 servers. But I can't manage to have the L3 switchs getting 
both routes in return.

birdc's "show route export bgp_sw3" only shows one of the 2 routes.

I tried enabling add-path without success. Maybe I'm missing something ?

Thanks for your help.

-- 
Arnaud Houdelette-Langlois
Administrateur des infrastructures systèmes et réseaux
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