On Sat, Apr 07, 2007 at 12:21:19PM -0400, Frangois Rousseau wrote: > But how I'm suppose to annonce the route for the right carp interface? > Right now my servers can always reach the router because of the CARP > interface but the router can't always reach the servers... > > If I unplug the cable of my CARP interface (bge2 for example), all > traffic from this router (directly from him or from my upstream > provider) can't reach the servers because the router still have only 1 > route going directly to his bge2 interface (the interface with carp) > and he have no clue of the MASTER interface. > > Maybe I'm worng and OSPF is not the solution. > > What I try to do is to have a redundant gateway for my servers (CARP) > and I want to have 2 upstreams provider with BGP (multihoming) > > I need a way for this 2 routers to talk to each other and share their > internal routes to know how to reach both of the "exit" point (route > to both upstream provider) and how to reach the MASTER interface of > every CARP group. > > Any idea? >
If you are just running with two routers you don't need to use OSPF. Use CARP for the inside network, setup the upstream sessions on each router (perhaps even using "depend on carp" to fail over the sessions) and setup a IBGP session between the two routers -- best via a dedicated interface. Set "set nexthop self" on the IBGP sessions and you should be fine. -- :wq Claudio
