传播OSPF默认路由_第1张图片

 

 

R1配置:

interface Loopback1

 ip address 1.1.1.1 255.255.255.255

!

interface Loopback2

 ip address 1.1.2.1 255.255.255.255

!

interface Serial1/1

 ip address 10.0.1.1 255.255.255.0

 serial restart-delay 0

!

router ospf 1

 router-id 1.1.1.1

 log-adjacency-changes

 network 1.1.1.0 0.0.0.255 area 0

 network 1.1.2.0 0.0.0.255 area 0

 network 10.0.1.0 0.0.0.255 area 0

!

 

R2配置:

interface Loopback1

 ip address 2.2.2.2 255.255.255.255

!

interface Serial1/0

 ip address 10.0.1.2 255.255.255.0

 serial restart-delay 0

!

interface Serial1/1

 ip address 10.0.2.1 255.255.255.0

 serial restart-delay 0

!

router ospf 1

 router-id 2.2.2.2

 log-adjacency-changes

 network 2.2.2.0 0.0.0.255 area 0

 network 10.0.1.0 0.0.0.255 area 0

 default-information originate                //生成一条默认路由下发到OSPF域中

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.0.2.2             //创建默认路由指向ISP

 

 

R3配置:

interface Loopback1

 ip address 3.3.1.3 255.255.255.255

!

interface Loopback2

 ip address 3.3.2.3 255.255.255.255

!

interface Loopback3

 ip address 3.3.3.3 255.255.255.255

!

interface Serial1/0

 ip address 10.0.2.2 255.255.255.0

 serial restart-delay 0

!

ip route 10.0.1.0 255.255.255.0 10.0.2.1      //ISP提供商指回一条静态路由