The Edge services gateway supports OSPF, BGP, and IS-IS routing protocols. An Edge services gateway can learn and advertise routes when configured with the OSPF routing protocol. When there are routes of equal cost, OSPF provides dynamic load balancing between these routes. The routing table size can become a challenge and an OSPF network limits the size of these routing tables by dividing the network into routing areas to optimize traffic flow. An area is identified by an area ID and is comprised of routers, links, and a logical collection of OSPF networks that have the same area identification.