新浪博客
SPAN>
在R2的OSPF进程下做默认路由重分布，让R1学习到R3环回口地址。
R3上配置去往R1的默认路由条目。
实现R1与R3的环回口地址相互通信。
router ospf x
router-id x.x.x.x //手动指定router-id//
network x.x.x.x x.x.x.x area x //宣告接口网段，area为x//
2) 配置R2上做默认路由重分布，实现R1去往R3的路由条目：
ip route 0.0.0.0 0.0.0.0 x.x.x.x //配置去往目的端默认路由//
router ospf x
default-information original //默认路由重分布//
Building configuration...
Current configuration : 738 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.1 255.255.255.0
duplex auto
speed auto
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.0 0.0.0.255 area 0
network 12.12.12.0 0.0.0.255 area 0
!
no ip http server
no ip http secure-server
!
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
R2：
Building configuration...
Current configuration : 919 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 23.23.23.2 255.255.255.0
duplex auto
speed auto
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.0 0.0.0.255 area 0
network 12.12.12.0 0.0.0.255 area 0
default-information originate
!
no ip http server
no ip http secure-server
ip route 0.0.0.0 0.0.0.0 23.23.23.3
!
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
R3：
Building configuration...
Current configuration : 645 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface FastEthernet0/0
ip address 23.23.23.3 255.255.255.0
duplex auto
speed auto
!
no ip http server
no ip http secure-server
ip route 0.0.0.0 0.0.0.0 23.23.23.2
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
7 案例总结及其他
1) 默认路由重分布方式：
先配置默认路由条目，再去OSPF进程下输入default-information original
2) 将环回接口地址网段要下发给邻居路由时，可以通过默认路由重分布来实现。
Email：zhoujj@spoto.net
新浪微博：http://weibo.com/zhoujj0130
网 站: http://www.SPOTO.net
雏鹰部落：http://bbs.SPOTO.net
| Loopback0 |
|||
| R1 |
12.12.12.1/24 |
N/A |
1.1.1.1/24 |
| R2 |
12.12.12.2/24 |
23.23.23.2/24 |
2.2.2.2/24 |
| R3 |
23.23.23.3/24 |
N/A |
3.3.3.3/24 |
3 案例配置需求
R1、R2设备运行OSPF协议，进程号为1。在R2的OSPF进程下做默认路由重分布，让R1学习到R3环回口地址。
R3上配置去往R1的默认路由条目。
实现R1与R3的环回口地址相互通信。
4 案例配置思路
1) 配置R1、R2运行OSPF协议，进程为1。router ospf x
router-id x.x.x.x //手动指定router-id//
network x.x.x.x x.x.x.x area x //宣告接口网段，area为x//
2) 配置R2上做默认路由重分布，实现R1去往R3的路由条目：
ip route 0.0.0.0 0.0.0.0 x.x.x.x //配置去往目的端默认路由//
router ospf x
default-information original //默认路由重分布//
5 案例检验结果
1）查看R1是否有学习到重分布默认路由条目：
2）查看R2上的默认路由条目：
3）R3通往R1的路由条目：
4）测试R1能否ping通R3的环回接口：
6 配置案例
R1：Building configuration...
Current configuration : 738 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.1 255.255.255.0
duplex auto
speed auto
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.0 0.0.0.255 area 0
network 12.12.12.0 0.0.0.255 area 0
!
no ip http server
no ip http secure-server
!
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
R2：
Building configuration...
Current configuration : 919 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.0
!
interface FastEthernet0/0
ip address 12.12.12.2 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet1/0
ip address 23.23.23.2 255.255.255.0
duplex auto
speed auto
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.0 0.0.0.255 area 0
network 12.12.12.0 0.0.0.255 area 0
default-information originate
!
no ip http server
no ip http secure-server
ip route 0.0.0.0 0.0.0.0 23.23.23.3
!
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
R3：
Building configuration...
Current configuration : 645 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
memory-size iomem 5
!
!
ip cef
no ip domain lookup
!
interface Loopback0
ip address 3.3.3.3 255.255.255.0
!
interface FastEthernet0/0
ip address 23.23.23.3 255.255.255.0
duplex auto
speed auto
!
no ip http server
no ip http secure-server
ip route 0.0.0.0 0.0.0.0 23.23.23.2
!
control-plane
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
!
!
end
7 案例总结及其他
1) 默认路由重分布方式：
先配置默认路由条目，再去OSPF进程下输入default-information original
2) 将环回接口地址网段要下发给邻居路由时，可以通过默认路由重分布来实现。
Email：zhoujj@spoto.net
新浪微博：http://weibo.com/zhoujj0130
网 站: http://www.SPOTO.net
雏鹰部落：http://bbs.SPOTO.net