實驗十一OSPF缺省路由

1、 全網劃分爲三個區域a012，R5爲外網
2、 全網啓動OSPF協議
3、 由於R5爲外網所以在R4上做一條去往R5的缺省路由將缺省路由注入OSPF中查看R1，R2的數據庫表,都有這條路由

		 AS External Database
Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 External  0.0.0.0         10.0.4.4            38  36    80000001       1
		 AS External Database
Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 External  0.0.0.0         10.0.4.4           180  36    80000001       1

4、 將區域2做爲stub區域查看數據庫表

 		         Area: 0.0.0.2
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    10.0.2.2        10.0.2.2             4  48    80000005       1
 Router    10.0.13.3       10.0.13.3            3  36    80000005       1
 Network   10.0.23.3       10.0.13.3            5  32    80000002       0
 Sum-Net   0.0.0.0         10.0.13.3           49  28    80000001       1
 Sum-Net   10.0.34.0       10.0.13.3           49  28    80000001       1
 Sum-Net   10.0.13.0       10.0.13.3           49  28    80000001       1
 Sum-Net   192.168.1.1     10.0.13.3           49  28    80000001       1
區域2也有一條三類的缺省路由，進一步調爲完全stub區域
[r2]dis ospf lsdb

	 OSPF Process 1 with Router ID 10.0.2.2
		 Link State Database 

		         Area: 0.0.0.2
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    10.0.2.2        10.0.2.2             6  48    80000008       1
 Router    10.0.13.3       10.0.13.3            6  36    80000006       1
 Network   10.0.23.2       10.0.2.2             7  32    80000001       0
 Sum-Net   0.0.0.0         10.0.13.3          135  28    80000001       1

5、 將區域1做爲完全NSSA區域

		         Area: 0.0.0.1
 Type      LinkState ID    AdvRouter          Age  Len   Sequence   Metric
 Router    10.0.13.3       10.0.13.3            6  36    80000014       1
 Router    10.0.1.1        10.0.1.1             2  36    80000017       1
 Network   10.0.13.1       10.0.1.1             2  32    80000002       0
 Sum-Net   0.0.0.0         10.0.13.3           11  28    80000001       1
 NSSA      0.0.0.0         10.0.13.3            8  36    80000005       1