OSPF协议实验

      R4环回不能宣告，全网可达，保障更新安全，避免环路，减少路由条目，缺省路由、路由条目全，手工认证，空接口，手工汇总。

R1

system-view 
[Huawei]sysname r1
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 192.168.1.1 27
[r1-GigabitEthernet0/0/0]int lo0
[r1-LoopBack0]ip add 192.168.1.33 27

R2

system-view 
[Huawei]sysname r2
[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 192.168.1.2 27
[r2-GigabitEthernet0/0/0]int lo0
[r2-LoopBack0]ip add 192.168.1.65 27

R3

system-view 
[Huawei]sysname r3
[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]ip add 192.168.1.3 27
[r3-GigabitEthernet0/0/0]int g0/0/1
[r3-GigabitEthernet0/0/1]ip add 192.168.1.129 30
[r3-GigabitEthernet0/0/1]int lo0
[r3-LoopBack0]ip add 192.168.1.97 27

R4

system-view 
[Huawei]sysname r4
[r4]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add  192.168.1.130 30
[r4-GigabitEthernet0/0/0]int lo0
[r4-LoopBack0]ip add 4.4.4.4 24

R1:

R2:

R3:

system-view 
[r3]ospf 1 rou	
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 192.168.1.3 0.0.0.0

[r3-ospf-1-area-0.0.0.0]network 192.168.1.97 0.0.0.0

R4:

 检查一下个个节点是否互通

路由器R1上：

[r1]interface GigabitEthernet 0/0/0
[r1-GigabitEthernet0/0/0]ospf dr-priority 0

路由器R2上：

[r2]interface GigabitEthernet 0/0/0
[r2-GigabitEthernet0/0/0]ospf dr-priority 0

结果如下：

[r2]display ospf peer

[r1-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

[r2-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

[r3-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

[r3-GigabitEthernet0/0/1]ospf authentication-mode md5 1 cipher 123456

[r4-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

[r3]ip route-static 192.168.1.0 25 NULL 0 ----- 给area0汇总的网段做的空接口
[r3]ip route-static 192.168.1.128 25 NULL 0 ----- area1

[r3-ospf-1-area-0.0.0.0]abr-summary 192.168.1.0 255.255.255.128
[r3-ospf-1-area-0.0.0.1]abr-summary 192.168.1.128 255.255.255.128