NorthStar Planner Routing Instances Overview
This chapter describes how to use OSPF processes, or routing instances, to partition a backbone network into multiple networks which do not talk to each other. Because OSPF process IDs or routing instance names can be defined per interface, multiple OSPF processes can be configured on each router. Only interfaces in the same process can send packets and routing tables to each other, even if they are on the same router. Routing Instance rules and OSPF process routing rules affect how demands are routed over the network.
Use these procedures when you wish to model multiple logical topologies on a single physical network.