3Com 4007R Implementation Guide - Page 496

496 CHAPTER 19: OPEN SHORTEST PATH FIRST (OSPF) ROUTING Import Example 1: Accept Route The policy defined in Table 81 imports route 243.140.28.0 into the routing table and assigns a cost of 10 to the route. Table 81 Import Policy Example Policy Field Policy type Route address Route subnet mask Policy action Metric adjustment Administrative weight Definition import 243.140.28.0 255.255.255.0 accept 10 16 Import Example 2: Reject Route The policy defined in Table 82 prohibits the router from adding route 243.140.28.0 to its routing table. Table 82 Export Policy Example Policy Field Policy type Route address Route subnet mask Policy action Administrative weight Definition import 243.140.28.0 255.255.255.0 reject 15 Implementing Export Policies Using export policies, you can define which self-originated external routes a router advertises. Self-originated refers to routes that are originated by the router itself. You can also adjust the cost and external metric type of each route that you allow the router to advertise. See the discussion about Type 1 and Type 2 metrics in "External Link State Advertisements" earlier in this chapter for more information about external metric types.