>[MCI]----[Cat5K w/RSM]----[UUNet]
> |
> Internal LAN
>
>
> I have a client with two Internet routers running
>BGP multihomed to the ISPs, MCI and UUNET. Inbound
>traffic to their AS is pretty much balanced between
>MCI and UUNET. On the inside however, where MCI and
>UUNET connect into a Cat5K, the MCI is the HSRP active
>router and thus handles most of the outbound traffic.
>The client wants to load balance outbound traffic
>between the two.
> So when the client recently added an RSM to the
>Cat5K, I proposed to remove HSRP totally and run OSPF
>so that the RSM sees two equal-cost default routes to
>the routers.
> My question is, can you run default-information
>originate on two routers? And would that work in this
>scenario?
It's a good approach, at least for load-balancing your outgoing
traffic. To have any chance of affecting incoming traffic, you need
to play BGP games. Since you speak of their AS, I assume there is BGP.
Default-information originate works quite well. If the Cat5K is the
only layer 3 aware hop, the next caveat may not be that important,
but if it feeds additional router hops, be sure that the default
originated is of OSPF external type 1, not type 2, so internal
reachability is considered in the interest of load balancing.
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