Advantages
Border routing can be advantageous in some situations:
| • | In networks with many routers, border routers can limit the spread of routing-related information, resulting in increased network stability. |
| • | When routing messages between separate enterprises—for example, to a business partner outside your intranet—border routers can isolate intranet topology information. |
| • | Border router policies enforce subject gating restrictions pairwise between routing table entries (that is, neighbors and local networks). You can specify a separate policy for each ordered pair. |