> One idea is to only use OSPF behind each edge router and > inject those ospf routes into iBGP. Doing that would eliminate > having to deal with the lower igp metric of OSPF between > my 4 edge routers. That was what I was thinking of initially but I wasn't sure if the areas are interconnected in which case there could be some funky routing results external vs internal LSAs... but now that I think about it it should be fine. > Since I’m only receiving a default route from my upstream > providers at the moment, would injecting a default route via > ospf (with the same metric) cause a “load balanced” outbound > distribution? Yes if each BGP speaker advertises a default route with the same metric then egress from the AS "west" sites would use exit A and "east" sites would use Exit B
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