ospf综合实验

目录

搭建拓扑:

一、配置area 0公网环境

二、底层通向公网的缺省

三、搭建MGRE环境

四、配置私网的所有IP地址

五、配置ospf

六、查看邻居

七、优化(减少LSA更新量)

八、设置特殊区域并配置空接口

九、设置NAT

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首先进行IP地址规划，一共六个区域，将172.16.0.0/16分为六个网段。

area 0:172.16.0.0/19

干路网段:172.16.0.128/29

R5:176.16.1.1/25

R6:176.16.1.129/25

R7:176.16.2.1/25

R4:4.4.4.4/24

area 1:172.16.32.0/19

干路网段:172.16.32.128/29

R1:176.16.33.1/25

R2:176.16.33.129/25

R3:176.16.34.1/25

area 2:172.16.64.0/19

干路网段:172.16.64.0/30

R11:176.16.65.1/25

area 3:172.16.96.0/19

干路网段:172.16.96.0/30

R8:176.16.97.1/25

area 3:172.16.128.0/19

干路网段:172.16.128.0/30

R9:176.16.129.1/25

R10:176.16.129.129/25

RIP:172.16.160.0/19

R12:176.16.160.1/20

        176.16.176.1/20

搭建拓扑:

一、配置area 0公网环境

[r3-Serial4/0/0]ip address 34.0.0.1 24
[r5-Serial4/0/0]ip address 45.0.0.1 24
[r6-Serial4/0/0]ip address 46.0.0.1 24
[r7-GigabitEthernet0/0/0]ip address 47.0.0.1 24 
[r4-LoopBack0]ip address 4.4.4.4 24
[r4-Serial4/0/0]ip address 34.0.0.2 24
[r4-Serial4/0/1]ip address 45.0.0.2 24
[r4-Serial3/0/0]ip address 46.0.0.2 24
[r4-GigabitEthernet0/0/0]ip address 47.0.0.2 24 

二、底层通向公网的缺省

[r3]ip route-static 0.0.0.0 0 34.1.1.2
[r5]ip route-static 0.0.0.0 0 45.1.1.2
[r6]ip route-static 0.0.0.0 0 46.1.1.2
[r7]ip route-static 0.0.0.0 0 47.1.1.2

三、搭建MGRE环境

[r3-Tunnel0/0/0]ip address 172.16.0.129 29
[r3-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r3-Tunnel0/0/0]source 34.1.1.1
[r3-Tunnel0/0/0]nhrp entry multicast dynamic 
[r3-Tunnel0/0/0]nhrp network-id 100

[r5-Tunnel0/0/0]ip address 172.16.0.130 29
[r5-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r5-Tunnel0/0/0]nhrp entry 172.16.0.129 34.1.1.1 register 
[r5-Tunnel0/0/0]nhrp network-id 100
[r5-Tunnel0/0/0]source Serial 4/0/0

[r6-Tunnel0/0/0]ip address 172.16.0.131 29
[r6-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r6-Tunnel0/0/0]nhrp entry 172.16.0.129 34.1.1.1 register 
[r6-Tunnel0/0/0]nhrp network-id 100
[r6-Tunnel0/0/0]source Serial 4/0/0

[r7-Tunnel0/0/0]ip address 172.16.0.132 29
[r7-Tunnel0/0/0]tunnel-protocol gre p2mp 
[r7-Tunnel0/0/0]nhrp entry 172.16.0.129 34.1.1.1 register 
[r7-Tunnel0/0/0]nhrp network-id 100
[r7-Tunnel0/0/0]source GigabitEthernet 0/0/0

四、配置私网的所有IP地址

#区域0
[r5-LoopBack0]ip adress 172.16.1.1 25
[r6-LoopBack0]ip adress 172.16.1.129 25
[r7-LoopBack0]ip adress 172.16.2.1 25
#区域1
[r1-LoopBack0]ip adress 172.16.33.1 25
[r1-GigabitEthernet0/0/0]ip adress 172.16.32.129 29
[r2-LoopBack0]ip adress 172.16.33.129 25
[r2-GigabitEthernet0/0/0]ip ad 172.16.32.130 29
[r3-LoopBack0]ip adress 172.16.34.1 25
[r3-GigabitEthernet0/0/0]ip ad 172.16.32.131 29
#区域2
[r6-GigabitEthernet0/0/0]ip adress 172.16.64.1 30
[r11-LoopBack0]ip adress 172.16.65.1 25
[r11-GigabitEthernet0/0/0]ip adress 172.16.64.2 30
[r11-GigabitEthernet0/0/1]ip adress 172.16.64.5 30
[r12-LoopBack0]ip adress 172.16.160.1 20
[r12-LoopBack1]ip adress 172.16.176.1 20
[r12-GigabitEthernet0/0/0]ip adress 172.16.64.6 30
#区域3
[r7-GigabitEthernet0/0/1]ip adress 172.16.96.1 30
[r8-LoopBack0]ip address 172.16.97.1 25
[r8-GigabitEthernet0/0/0]ip adress 172.16.96.2 30
[r8-GigabitEthernet0/0/1]ip adress 172.16.96.5 30
[r9-LoopBack0]ip adress 172.16.129.1 25
[r9-GigabitEthernet0/0/0]ip adress 172.16.96.6 30
[r9-GigabitEthernet0/0/1]ip adress 172.16.128.1 30
#区域4
[r10-LoopBack0]ip adress 172.16.129.129 25
[r10-GigabitEthernet0/0/0]ip adress 172.16.128.2 30

五、配置ospf

[r1]ospf 1 router-id 1.1.1.1
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255
[r2]ospf 1 router-id 2.2.2.2	
[r2-ospf-1]area 1	
[r2-ospf-1-area-0.0.0.1]network 172.16.0.0 0.0.255.255
[r3]ospf 1 router-id 3.3.3.3
[r3-ospf-1]area 1	
[r3-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.3.255
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 172.16.0.129 0.0.0.0
[r5]ospf 1 router-id 5.5.5.5	
[r5-ospf-1]area 0
[r5-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
[r6]ospf 1 router-id 6.6.6.6	
[r6-ospf-1]area 0	
[r6-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.1.255
[r6-ospf-1]area 2	
[r6-ospf-1-area-0.0.0.2]network 172.16.64.0 0.0.0.255
[r7]ospf 1 router-id 7.7.7.7	
[r7-ospf-1]area 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.3.255
[r7-ospf-1]area 3	
[r7-ospf-1-area-0.0.0.3]network 172.16.96.0 0.0.0.255
[r8]ospf 1 router-id 8.8.8.8		
[r8-ospf-1]area 3	
[r8-ospf-1-area-0.0.0.3]network 172.16.0.0 0.0.255.255
[r9]ospf 1 router-id 9.9.9.9	
[r9-ospf-1]area 3	
[r9-ospf-1-area-0.0.0.3]network 172.16.96.0 0.0.0.255
[r9-ospf-2]area 4	
[r9-ospf-2-area-0.0.0.4]network 172.16.128.0 0.0.1.255
[r9]ospf 2
[r9-ospf-2]default-route-advertise
[r9-ospf-2]import-route ospf 1
[r9]ospf 1	
[r9-ospf-1]import-route ospf 2
[r10]ospf 2 router-id 10.10.10.10	
[r10-ospf-2]area 4
[r10-ospf-2-area-0.0.0.4]network 172.16.0.0 0.0.255.255
[r11]ospf 1 router-id 11.11.11.11	
[r11-ospf-1]area 2	
[r11-ospf-1-area-0.0.0.2]network 172.16.0.0 0.0.255.255
[r12]ospf 1 router-id 12.12.12.12	
[r12-ospf-1]area 2	
[r12-ospf-1-area-0.0.0.2]network 172.16.64.0 0.0.0.255
[r12]rip 1
[r12-rip-1]version 2	
[r12-rip-1]undo summary 	
[r12-rip-1]network 172.16.0.0
[r12]ospf 1
[r12-ospf-1]import-route rip

六、查看邻居

        查看邻居表发现R3/5/6/7没用全部建立邻居，所以需要修改tunnel的工作方式

        查看R3的邻居表发现R5/6/7的DR发生冲突，所以取消R5/6/7的DR选举资格

[r3-Tunnel0/0/0]ospf network-type broadcast

[r5-Tunnel0/0/0]ospf network-type broadcast
[r5-Tunnel0/0/0]ospf dr-priority 0

[r6-Tunnel0/0/0]ospf network-type broadcast 
[r6-Tunnel0/0/0]ospf dr-priority 0

[r7-Tunnel0/0/0]ospf network-type broadcast 
[r7-Tunnel0/0/0]ospf dr-priority 0

七、优化(减少LSA更新量)

[r3]ospf 1
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]abr-summary  172.16.32.0 255.255.224.0

[r6]ospf 1
[r6-ospf-1]area 2
[r6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0

[r7]ospf 1
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0

[r9]ospf 1
[r9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0

[r12]ospf 1
[r12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0

八、设置特殊区域并配置空接口

[r1]ospf 1	
[r1-ospf-1]area 1
[r1-ospf-1-area-0.0.0.1]stub
[r2]ospf 1	
[r2-ospf-1]area 1
[r2-ospf-1-area-0.0.0.1]stub
[r3]ospf 1	
[r3-ospf-1]area 1
[r3-ospf-1-area-0.0.0.1]stub-summary
[r3]ip route-static 172.16.32.0 19 NULL 0

[r6]ospf 1	
[r6-ospf-1]area 2	
[r6-ospf-1-area-0.0.0.2]nssa no-summary
[r6]ip route-static 172.16.64.0 19 NULL 0
[r7]ospf 1	
[r7-ospf-1]area 3
[r7-ospf-1-area-0.0.0.3]nssa no-summary
[r7]ip route-static 172.16.96.0 19 NULL 0
[r9]ospf 1	
[r9-ospf-1]area 3
[r9-ospf-1-area-0.0.0.3]nssa
[r9]ip route-static 172.16.128.0 19 NULL 0
[r11]ospf 1	
[r11-ospf-1]area 2
[r11-ospf-1-area-0.0.0.2]nssa
[r12]ospf 1	
[r12-ospf-1]area 2
[r12-ospf-1-area-0.0.0.2]nssa
[r12]ip route-static 172.16.160.0 19 NULL 0

九、设置NAT

[r3]acl 2000
[r3-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]nat outbound 2000

[r6]acl 2000
[r6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r6]int g0/0/0
[r6-GigabitEthernet0/0/0]nat outbound 2000

[r7]acl 2000
[r7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[r7]int g0/0/1
[r7-GigabitEthernet0/0/1]nat outbound 2000