要求:
1.整个网络IP地址为192.168.1.0/24
2. area 0 区域手工设置R1为DR R2为BDR
3.R3---R5之间使用密文认证方式
4.R1.R2.R5上配置环回接口,但是R5环回接口不能宣告进ospf
5全网可达
配置:
AR1
[r1]interface g0/0/0
{r1-GigabitEthernet0/0/0]ip address 192.168.1.1 27
[r1]interface LoopBack 0
[r1-LoopBack0]ip address 192.168.1.161 32
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.0
[r1]interface G0/0/0
[r1-GigabitEthernet0/0/0]ospf dr-priority 10
AR2
[R2]interface G0/0/0
[R2-GigabitEthernet0/0/0]IP address 192.168.1.33 27
[R2]interface LoopBack 0
[R2-LoopBack0]ip address 192.168.1.193 32
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 192.168.1.33 0.0.0.0
[R2]interface g0/00/0
[R2-GigabitEthernet0/0/0]ospf dr-priority 9
AR3
[r3]interface g0/0/0
[r3-GigabitEthernet0/0/0]ip address 192.168.1.65 27
[r3]interface g0/0/01
[r3-GigabitEthernet0/0/1]ip address 192.168.1.97 27
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 192.168.1.65 0.0.0.0
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 192.168.1.97 0.0.0.0
[r3-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456
AR4
[r4]interface g0/0/0
[r4-GigabitEthernet0/0/0]ip address 192.168.1.98 27
[r4]interface g0/0/1
[r4-GigabitEthernet0/0/1]ip address 192.168.1.129 27
[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]area 1
[r4-ospf-1-area-0.0.0.1]network 192.168.1.98 0.0.0.0
[r4-ospf-1-area-0.0.0.1]network 192.168.1.129 0.0.0.0
[r4-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456
[r4-GigabitEthernet0/0/1]ospf authentication-mode md5 1 cipher 123456
AR5
[r5]interface g0/0/0
[r5-GigabitEthernet0/0/0]ip address 192.168.1.130 27
[r5]interface LoopBack 0
[r5-LoopBack0]ip address 192.168.1.225 32
[r5]ospf 1 router-id 5.5.5.5
[r5-ospf-1]area 1
[r5-ospf-1-area-0.0.0.1]network 192.168.1.130 0.0.0.0
[r5-ospf-1]default-route-advertise
[r5-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456