OSPF problem

[Eric Leblond]

Hi bird people,

A client of mine has some problem with OSPF protocol.

The setup is as follow :

GW --- VPN1
  \
   \___VPN2

VPN1 and VPN2 are cisco running OSPF and GW is a linux GW. OSPF is here
to have dynamic route to VPN clients which can connect to VPN1 or VPN2
(load balancing)

OSPF is working fine but after some times, it seems that some route are
not added correctly. For exemple, VPN1 announces a new route but GW
still has a route to VPN2. A bird reload is enough to have the correct
route imported.

The configuration of OSPF is as follow :

protocol ospf VPN {
	import filter vpn_net;
	export filter my_exports;
	export where source = RTS_STATIC;
	area 0.0.0.0 {
                interface "eth2" {
                        cost 10;
                        hello 10;
                        priority 0;
                        retransmit 4;
			neighbors {
				192.126.9.4 eligible;
				192.126.9.5;
			};
                        authentication cryptographic;
                        password "Password";
			type broadcast;
                };
	};
}

Is this a configuration problem ? 

BR,
-- 
Éric Leblond, eleblond at inl.fr
Téléphone : 01 44 89 46 40, Fax : 01 44 89 45 01
INL, http://www.inl.fr