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HCIA实验(06)
2022-07-25 09:47:00 【雨天_】

1.进行地址规划
192.168.1.0/24 (划分成两个子网)
192.168.1.0/25 A0(区域0)
192.168.1.0/27 (骨干)
192.168.1.0/29 192.168.1.8/29 192.168.1.16/29 192.168.1.24/29
192.168.1.32/27 R1 192.168.1.64/27 R2 192.168.1.94/27 R3 (用户)
192.168.1.128/25 A1(区域1)

2.配置环回
[r1]int LoopBack 0
[r1-LoopBack0]ip add 192.168.1.33 27
[r2]int LoopBack 0
[r2-LoopBack0]ip add 192.168.1.65 27
[r3]int LoopBack 0
[r3-LoopBack0]ip add 192.168.1.97 27
[r4]int LoopBack 0
[r4-LoopBack0]ip add 4.4.4.4 24
3.配置路由器接口
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 192.168.1.1 29
[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 192.168.1.2 29
[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]ip add 192.168.1.3 29
[r3]int g0/0/1
[r3-GigabitEthernet0/0/1]ip add 192.168.1.129 25
[r4]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add 192.168.1.130 25
(测试)



4.宣告
[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 192.168.1.0 0.0.0.255
[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 router-id 3.3.3.3
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 192.168.1.97 0.0.0.0
[r3]ospf 1 router-id 4.4.4.4
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]network 192.168.1.129 0.0.0.0
[r4]ospf 1 router-id 4.4.4.4
[r4-ospf-1]area 1
[r4-ospf-1-area-0.0.0.1]network 192.168.1.130 0.0.0.0
(查看r3)

(r3与r1,r2和r4全部正常的建立成了邻接关系)
(查看r4)

5.修改选举结果和优先级
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ospf dr-priority 0
[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ospf dr-priority 0(放弃选举,只形成DR)
(查看r1和r2)

(当DR为0,全都形成邻居关系,无拓扑交互,无法形成通路)
6.在r4上配置缺省
[r4]ospf 1
[r4-ospf-1]default-route-advertise always
(查看r1的ospf)
(缺省实现)
(测试)


8.(保障更新安全)做认证
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456
[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456
[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]ospf authentication-mode md5 1 cipher 123456

9.将区域0的路由汇总,发给区域1
[r3]ospf 1
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]abr-summary 192.168.1.0 255.255.255.128

10.在r3上做一个空接口,防止出现环路
[r3]ip route-static 192.168.1.0 25 NULL 0
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