1.路由汇总
1)在ABR上部署路由汇总
![图片[1]-3.3 OSPF特性-大赛人网](https://www.dsrw.com/wp-content/uploads/2023/03/图片1-13-1024x599.png)
OSPF需要手动进行路由汇总。
(1)路由汇总前
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[R1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 13.1.1.0 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 2.2.2.2 0.0.0.0
[R2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]network 192.168.1.0 0.0.0.255
[R2-ospf-1-area-0.0.0.1]network 192.168.31.0 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 3.3.3.3 0.0.0.0
[R3-ospf-1-area-0.0.0.0]network 13.1.1.0 0.0.0.255
[R3-ospf-1]area 2
[R3-ospf-1-area-0.0.0.2]network 192.168.32.0 0.0.0.255
[R3-ospf-1-area-0.0.0.2]network 192.168.63.0 0.0.0.255
<R1>display ip routing-table protocol ospf
Destination/Mask Proto Pre Cost Flags NextHop Interface
192.168.1.0/24 OSPF 10 2 D 12.1.1.2 GigabitEthernet0/0/2
192.168.31.0/24 OSPF 10 2 D 12.1.1.2 GigabitEthernet0/0/2
192.168.32.0/24 OSPF 10 2 D 13.1.1.3 GigabitEthernet0/0/0
192.168.63.0/24 OSPF 10 2 D 13.1.1.3 GigabitEthernet0/0/0
(2)路由汇总后
[R2-ospf-1]area 1
[R2-ospf-1-area-0.0.0.1]abr-summary 192.168.0.0 255.255.224.0
[R3-ospf-1]area 2
[R3-ospf-1-area-0.0.0.2]abr-summary 192.168.32.0 255.255.224.0
<R1>display ip routing-table protocol ospf
Destination/Mask Proto Pre Cost Flags NextHop Interface
192.168.0.0/19 OSPF 10 2 D 12.1.1.2 GigabitEthernet0/0/2
192.168.32.0/19 OSPF 10 2 D 13.1.1.3 GigabitEthernet0/0/0
2)在ASBR上部署路由汇总
![图片[2]-3.3 OSPF特性-大赛人网](https://www.dsrw.com/wp-content/uploads/2023/03/图片2-13-1024x675.png)
(1)路由汇总前
[R1]rip 1
[R1-rip-1]version 2
[R1-rip-1]network 14.0.0.0
[R1-rip-1]import-route ospf
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]import-route rip
[R4]rip 1
[R4-rip-1]version 2
[R4-rip-1]network 14.0.0.0
[R4-rip-1]network 10.0.0.0
[R4-rip-1]network 4.0.0.0
[R1]display ip routing-table protocol rip
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.1.1.0/24 RIP 100 1 D 14.1.1.4 GigabitEthernet0/0/1
10.1.255.0/24 RIP 100 1 D 14.1.1.4 GigabitEthernet0/0/1
(2)路由汇总后
[R1]ospf 1 router-id 1.1.1.1
[R1-ospf-1]asbr-summary 10.1.0.0 255.255.0.0
<R2>display ip routing-table
Destination/Mask Proto Pre Cost Flags NextHop Interface
10.1.0.0/16 O_ASE 150 2 D 12.1.1.1 GigabitEthernet0/0/2
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