ospf综合实验

拓扑搭建：

IP地址规划：
172.16.0.0/16  
172.16.0.0/19  area 0
172.16.32.0/19  area 1
172.16.64.0/19  area 2
172.16.96.0/19  area  3
172.16.128.0/19  area 4
172.16.160.0/19  rip区域

配置缺省保证公网全网可达：

[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

以R3为中心站点，配置R3，R5，R6，R7的MGRE环境

[R3]interface Tunnel 0/0/0
[R3-Tunnel0/0/0]ip add 172.16.1.1 24
[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
[R3-Tunnel0/0/0]ospf network-type broadcast 
 
[R5]interface Tunnel 0/0/0
[R5-Tunnel0/0/0]ip add 172.16.1.2 24
[R5-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R5-Tunnel0/0/0]source GigabitEthernet 0/0/0
[R5-Tunnel0/0/0]nhrp entry 172.16.1.1 34.1.1.1 register 
[R5-Tunnel0/0/0]nhrp network-id 100
[R5-Tunnel0/0/0]ospf network-type broadcast 
[R5-Tunnel0/0/0]ospf dr-priority 0
 
 
[R6]interface Tunnel 0/0/0
[R6-Tunnel0/0/0]ip add 172.16.1.3 24
[R6-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R6-Tunnel0/0/0]source GigabitEthernet 0/0/0
on the interface Tunnel0/0/0 has entered the UP state. 
[R6-Tunnel0/0/0]nhrp entry 172.16.1.1 34.1.1.1 register 
[R6-Tunnel0/0/0]nhrp network-id 100
[R6-Tunnel0/0/0]ospf network-type broadcast 
[R6-Tunnel0/0/0]ospf dr-priority 0
 
[R7]interface Tunnel 0/0/0
[R7-Tunnel0/0/0]ip add 172.16.1.4 24
[R7-Tunnel0/0/0]tunnel-protocol gre p2mp 
[R7-Tunnel0/0/0]source GigabitEthernet 0/0/0
[R7-Tunnel0/0/0]nhrp entry 172.16.1.1 34.1.1.1 register 
[R7-Tunnel0/0/0]nhrp network-id 100
[R7-Tunnel0/0/0]ospf network-type broadcast 
[R7-Tunnel0/0/0]ospf dr-priority 0

按区域配置OSPF以及RIP协议

区域0

[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.255
 
[R5]ospf 1 router-id 5.5.5.5
[R5-ospf-1]area 0
[R5-ospf-1-area-0.0.0.0]network 172.16.2.0 0.0.0.255
[R5-ospf-1-area-0.0.0.0]network 172.16.1.0 0.0.0.255
 
[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 0
[R6-ospf-1-area-0.0.0.0]network 172.16.3.0 0.0.0.255
[R6-ospf-1-area-0.0.0.0]network 172.16.1.0 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 172.16.1.0 0.0.0.255
[R7-ospf-1-area-0.0.0.0]network 172.16.4.0 0.0.0.255

区域1

[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]network 172.16.48.0 0.0.7.255
[R1-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.7.255
 
[R2]ospf 1 router-id 2.2.2.2
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]network 172.16.56.0 0.0.7.255
[R2-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.7.255
 
[R3]ospf 1 router-id 3.3.3.3
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]network 172.16.40.0 0.0.7.255
[R3-ospf-1-area-0.0.0.1]network 172.16.32.0 0.0.7.255

区域2

[R6]ospf 1 router-id 6.6.6.6
[R6-ospf-1]area 2
[R6-ospf-1-area-0.0.0.2]network 172.16.64.0 0.0.7.255
 
[R11]ospf 1 router-id 11.11.11.11
[R11-ospf-1]area 2
[R11-ospf-1-area-0.0.0.2]network 172.16.80.0 0.0.7.255
[R11-ospf-1-area-0.0.0.2]network 172.16.64.0 0.0.7.255
[R11-ospf-1-area-0.0.0.2]network 172.16.72.0 0.0.7.255

[R12]ospf 1 router-id 12.12.12.12

[R12-ospf-1]area 2

[R12-ospf-1-area-0.0.0.2]network 172.16.72.0 0.0.7.255

区域3

[R7]ospf 1 router-id 7.7.7.7
[R7-ospf-1]area 3
[R7-ospf-1-area-0.0.0.3]network 172.16.96.0 0.0.7.255
 
[R8]ospf 1 router-id 8.8.8.8
[R8-ospf-1]area 3
[R8-ospf-1-area-0.0.0.3]network 172.16.96.0 0.0.7.255
[R8-ospf-1-area-0.0.0.3]network 172.16.104.0 0.0.7.255
[R8-ospf-1-area-0.0.0.3]network 172.16.112.0 0.0.7.255
 
[R9]ospf 1 router-id 9.9.9.9
[R9-ospf-1]area 3
[R9-ospf-1-area-0.0.0.3]network 192.16.104.0 0.0.7.255

区域4

[R9]ospf 2 router-id 9.9.9.9
[R9-ospf-2]area 4
[R9-ospf-2-area-0.0.0.4]network 172.16.128.0 0.0.7.255
[R9-ospf-2-area-0.0.0.4]network 172.16.136.0 0.0.7.255
 
[R10]ospf 2 router-id 10.10.10.10
[R10-ospf-2]area 4
[R10-ospf-2-area-0.0.0.4]network 172.16.144.0 0.0.7.255
[R10-ospf-2-area-0.0.0.4]network 172.16.136.0 0.0.7.255

rip区域

[R12]rip

[R12-rip-1]version 2

[R12-rip-1]network 172.16.0.0

对RIP区域以及不规则区域开启双向重发布：

区域4

[R9]ospf 2
[R9-ospf-2]import-route ospf 1
[R9]ospf 1
[R9-ospf-1]import-route ospf 2

 rip区域

[R12]rip
[R12-rip-1]import-route ospf 1
[R12]ospf 1
[R12-ospf-1]import-route rip 1

对边界路由器配置NAT，保证私网可以访问公网

[R3]acl 2000
[R3-acl-basic-2000]rule permit source 172.16.32.0 0.0.7.255 
[R3]int g 0/0/1
[R3-GigabitEthernet0/0/1]nat outbound 2000
[R3]ospf
[R3-ospf-1]default-route-advertise always 
 
[R6]acl 2000
[R6-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R6]int g 0/0/0
[R6-GigabitEthernet0/0/0]nat outbound 2000
[R6]ospf
[R6-ospf-1]default-route-advertise always 
 
[R7]acl 2000    
[R7-acl-basic-2000]rule permit source 172.16.0.0 0.0.255.255
[R7]int g 0/0/0
[R7-GigabitEthernet0/0/0]nat outbound 2000
[R7]ospf
[R7-ospf-1]default-route-advertise always 
 
[R10]ip route-static 0.0.0.0 0 172.16.136.1
[R12]ip route-static 0.0.0.0 0 172.16.72.1

进行手工汇总以减少LSA，同时注意防止成环

[R3]ospf
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]abr-summary 172.16.32.0 255.255.224.0
[R3]ip route-static 172.16.32.0 19 NULL 0
 
[R6]ospf
[R6-ospf-1]area 2
[R6-ospf-1-area-0.0.0.2]abr-summary 172.16.64.0 255.255.224.0
[R6]ip route-static 172.16.64.0 19 NULL 0
 
[R7]ospf
[R7-ospf-1]area 3
[R7-ospf-1-area-0.0.0.3]abr-summary 172.16.96.0 255.255.224.0
[R7]ip route-static 172.16.96.0 19 NULL 0
 
[R12]ospf
[R12-ospf-1]asbr-summary 172.16.160.0 255.255.224.0
[R12]ip route-static 172.16.160.0 19 NULL 0
 
[R9]ospf    
[R9-ospf-1]asbr-summary 172.16.128.0 255.255.224.0
[R9]ip route-static 172.16.128.0 19 NULL 0
 
[R1]ospf
[R1-ospf-1]area 1
[R1-ospf-1-area-0.0.0.1]stub 
 
[R2]ospf
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]stub
 
[R3]ospf
[R3-ospf-1]area 1
[R3-ospf-1-area-0.0.0.1]stub no-summary

测试：