配置IP
R1:
[r1-GigabitEthernet0/0/0] ip address 192.168.1.1 24
[r1-LoopBack0] ip address 1.1.1.1 24
R2:
[r2-GigabitEthernet0/0/0] ip address 192.168.2.1 24
[r2-LoopBack0] ip address 2.2.2.2 24
R3:
[r3-GigabitEthernet0/0/0] ip address 192.168.3.1 24
[r3-GigabitEthernet0/0/1] ip address 192.168.3.2 24
[r3-LoopBack0] ip address 3.3.3.3 24
R4:
[r4-GigabitEthernet0/0/0] ip address 192.168.4.1 24
[r4-LoopBack0] ip address 4.4.4.4 24
3、配置OSPF协议
R1:
[r1]ospf 1 router-id 192.168.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.65 0.0.0.0
R2:
[r2]ospf 1 router-id 192.168.1.2
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 192.168.1.2 0.0.0.0
[r2-ospf-1-area-0.0.0.0]network 192.168.1.129 0.0.0.0
R3:
[r3]ospf 1 router-id 192.168.1.3
[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 192.168.193. 0.0.0.0
[r3]ospf 2 router-id 192.168.1.9
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 192.168.1.9 0.0.0.0
R4:
[r4]ospf 1 router-id 192.168.1.10
[r4-ospf-1]area 1
[r4-ospf-1-area-0.0.0.1]network 192.168.1.10 0.0.0.0
区域0环回
[r1]int LoopBack 0
[r1-LoopBack0]ip add 192.168.1.11 27
[r2]int LoopBack 0
[r2-LoopBack0]ip add 192.168.1.22 27
[r3]int LoopBack 0
[r3-LoopBack0]ip add 192.168.1.33 27
Area1环回
[r4]int LoopBack 0
[r4-LoopBack0]ip add 192.168.1.44 27
[r4-LoopBack0]int LoopBack 1
[r4-LoopBack1]ip add 4.4.4.4 24
R1-R3 R1为DR设备，没有BDR.
[r2-GigabitEthernet0/0/0]ospf dr-priority 0
[r3-GigabitEthernet0/0/0]ospf dr-priority 0