查看路由表以及ospf數據庫
r1#show ip route
172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks
C 172.16.12.0/24 is directly connected, FastEthernet0/0
O IA 172.16.22.2/32 [110/2] via 172.16.12.2, 00:03:05, FastEthernet0/0
O IA 172.16.23.0/24 [110/782] via 172.16.12.2, 01:30:34, FastEthernet0/0
C 172.16.41.0/24 is directly connected, Serial2/0
C 172.16.61.0/24 is directly connected, Serial1/0
注:O IA表示的是區域間的路由信息
r2#show ip route
172.16.0.0/24 is subnetted, 6 subnets
C 172.16.12.0 is directly connected, FastEthernet0/0
C 172.16.22.0 is directly connected, Loopback0
C 172.16.23.0 is directly connected, Serial1/0
O N2 172.16.35.0 [110/781] via 172.16.23.3, 00:08:05, Serial1/0
O IA 172.16.41.0 [110/782] via 172.16.12.1, 00:07:27, FastEthernet0/0
O IA 172.16.61.0 [110/782] via 172.16.12.1, 00:07:27, FastEthernet0/0
O*E2 0.0.0 .0/0 [110/1] via 172.16.23.3, 00:08:05, Serial1/0
注:ON2表示的是學習到的是一個NASS區域的路由條目
O*E2表示的是一條在OSPF自治系統外部的默認路由條目.
r3#show ip route
172.16.0.0/16 is variably subnetted, 6 subnets, 2 masks
O IA 172.16.12.0/24 [110/782] via 172.16.23.2, 00:08:51, Serial0/0
O IA 172.16.22.2/32 [110/782] via 172.16.23.2, 00:08:51, Serial0/0
C 172.16.23.0/24 is directly connected, Serial0/0
C 172.16.35.0/24 is directly connected, Serial1/0
O IA 172.16.41.0/24 [110/1563] via 172.16.23.2, 00:08:51, Serial0/0
O IA 172.16.61.0/24 [110/1563] via 172.16.23.2, 00:08:51, Serial0/0
S* 0.0.0 .0/0 [1/0] via 172.16.35.5
r4#show ip route
172.16.0.0/16 is variably subnetted, 5 subnets, 2 masks
O IA 172.16.12.0/24 [110/782] via 172.16.41.1, 00:10:22, Serial0/0
O IA 172.16.22.2/32 [110/783] via 172.16.41.1, 00:10:06, Serial0/0
O IA 172.16.23.0/24 [110/1563] via 172.16.41.1, 00:10:06, Serial0/0
C 172.16.41.0/24 is directly connected, Serial0/0
O IA 172.16.61.0/24 [110/1562] via 172.16.41.1, 00:10:22, Serial0/0
O*IA 0.0.0 .0/0 [110/782] via 172.16.41.1, 00:10:22, Serial0/0
注:O*IA表示的是學習到了一條區域間的默認路由
r6#show ip route
Gateway of last resort is 172.16.61.1 to network 0.0.0 .0
172.16.0.0/24 is subnetted, 1 subnets
C 172.16.61.0 is directly connected, Serial0/0
O*IA 0.0.0 .0/0 [110/782] via 172.16.61.1, 00:11:50, Serial0/0
注:因爲R6在totally stubby區域,所以只一條默認的路由出去以及一條直連的路由條目
實驗總結
|
區域類型 |
1&2 |
3&4 |
5 |
7 |
|
骨幹區域 |
允許 |
允許 |
允許 |
不允許 |
|
非骨幹（非末梢） |
允許 |
允許 |
允許 |
不允許 |
|
末梢 |
允許 |
允許 |
不允許 |
不允許 |
|
完全末梢 |
允許 |
不允許 |
不允許 |
不允許 |
|
NAAS |
允許 |
允許 |
不允許 |
允許 |