OFPF路由1

 

 几个概念

1.ospf是分区域的，其中area0 即区域0是主干区域，其他区域都必须与它相连

2.ospf的基本格式：

router ospf  进程号

network ip地址段  子网掩码的反码 area 进程号

例如network 1.1.1.0 0.0.0.255 area 1

3.划分区域是按照端口来划分

 

上面的图例，如果用ospf联通的话，需要写如下的命令

R1上

!
interface Ethernet0/0
 no ip address
 shutdown
 half-duplex
!
interface Ethernet0/1
 ip address 192.168.12.1 255.255.255.0
 half-duplex
!
interface Ethernet0/2
 no ip address
 shutdown
 half-duplex
!
interface Ethernet0/3
 no ip address
 shutdown
 half-duplex
!
router ospf 100
 log-adjacency-changes
 network 192.168.12.0 0.0.0.255 area 1
!

 

R2

!
interface Loopback1
 ip address 2.2.2.2 255.255.255.0
!
interface Ethernet0/0
 ip address 192.168.12.2 255.255.255.0
 half-duplex
!
interface Ethernet0/1
 ip address 192.168.23.2 255.255.255.0
 half-duplex
!
interface Ethernet0/2
 no ip address
 shutdown
 half-duplex
!
interface Ethernet0/3
 no ip address
 shutdown
 half-duplex
!
router ospf 100
 log-adjacency-changes
 network 2.2.2.0 0.0.0.255 area 0
 network 192.168.12.0 0.0.0.255 area 1
 network 192.168.23.0 0.0.0.255 area 0
!

 

R3

!
interface Loopback1
 ip address 3.3.3.3 255.255.255.0
!
interface Ethernet0/0
 ip address 192.168.23.3 255.255.255.0
 half-duplex
!
interface Ethernet0/1
 ip address 192.168.34.3 255.255.255.0
 half-duplex
!
interface Ethernet0/2
 no ip address
 shutdown
 half-duplex
!
interface Ethernet0/3
 no ip address
 shutdown
 half-duplex
!
router ospf 100
 log-adjacency-changes
 network 3.3.3.0 0.0.0.255 area 0
 network 192.168.23.0 0.0.0.255 area 0
 network 192.168.34.0 0.0.0.255 area 2
!

  

R4

 

!
interface Ethernet0/0
 ip address 192.168.34.4 255.255.255.0
 half-duplex
!
interface Ethernet0/1
 no ip address
 shutdown
 half-duplex
!
interface Ethernet0/2
 no ip address
 shutdown
 half-duplex
!
interface Ethernet0/3
 no ip address
 shutdown
 half-duplex
!
router ospf 100
 log-adjacency-changes
 network 192.168.34.0 0.0.0.255 area 2
!

 

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