Week11 Multi-Area OSPF === ![](https://i.imgur.com/VL9yMF7.png) * NYCU ![](https://i.imgur.com/UL1L2ge.png) * CS-Core ![](https://i.imgur.com/J50GQ5a.png) * CS-Aggre ![](https://i.imgur.com/AN3NNsL.png) * EE-Core ![](https://i.imgur.com/clfr6O0.png) * EE-Aggre ![](https://i.imgur.com/7vu4d04.png) * Dorm-Core ![](https://i.imgur.com/ptK7VQ5.png) * Dorm-Aggre ![](https://i.imgur.com/RIZczJ1.png) * 設定 stub area * `area 1 stub` * 檢查 OSPF route * `show ip route` * 看 OSPF 鄰居 * `show ip ospf neighbor` * 看 routing information * `show ip protocols` * 看知道的 network * `show ip ospf 10 database router` * 看 DR 和其他 router 的連接情形 * `show ip ospf 10 database network` * 看 ABR 有關其他 area 的 network * `show ip ospf 10 database summary` * 看 ABR 提供的 ASBR 資訊 * `show ip ospf 10 database asbr-summary` * 看 ASBR 提供的離開 AS 的路徑 * `show ip ospf 10 database external`