設定簡單的OSPF路由

首先有三台設備分別名為IOU1,IOU2,IOU3,實驗目的為 IOU1能Ping到IOU3





設定參數如下

IOU1 e0/0 IP:192.168.1.10

IOU2 e0/0 IP:192.168.1.20

IOU2 e0/1 IP:172.16.1.20

IOU3 e0/0 IP:192.168.1.30

指令如下

IOU1
IOU1(config)#int e0/0
IOU1(config-if)#ip address 192.168.1.10 255.255.255.0
IOU1(config-if)#no shutdown
*Mar  8 08:17:03.883: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
*Mar  8 08:17:04.889: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to up

IOU2
IOU2(config)#int e0/0
IOU2(config-if)#ip address 192.168.1.20 255.255.255.0
IOU2(config-if)#no shutdown
*Mar  8 08:18:44.548: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
IOU2(config-if)#
*Mar  8 08:18:45.551: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to up

IOU2(config)#int e0/1
IOU2(config-if)#ip address 172.16.1.20 255.255.255.0
IOU2(config-if)#no shutdown
*Mar  8 08:20:00.967: %LINK-3-UPDOWN: Interface Ethernet0/1, changed state to up
*Mar  8 08:20:01.980: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/1, changed state to up


IOU3
IOU3(config)#int e0/0
IOU3(config-if)#ip address 172.16.1.30 255.255.255.0
IOU3(config-if)#no shutdown
*Mar  8 08:21:04.171: %LINK-3-UPDOWN: Interface Ethernet0/0, changed state to up
*Mar  8 08:21:05.186: %LINEPROTO-5-UPDOWN: Line protocol on Interface Ethernet0/0, changed state to up


IOU1上執行ping IOU2的e0/0 (IP:192.168.1.20)為通的

但ping IOU2的e0/1 (IP:172.16.1.20)則不通

在IOU1上show 路由
IOU1#show ip route
顯示只有L (本地)跟C (直連的)看不到往172.16.1.0的路由

只好開始建立OSPF路由
IOU 1
IOU1(config)#router ospf 10
IOU1(config-router)#network 192.168.1.0 0.0.0.255 area 100


IOU 2

IOU2(config)#router ospf 10
IOU2(config-router)#network 192.168.1.0 0.0.0.255 area 100

IOU2(config)#router ospf 10
IOU2(config-router)#network 172.16.1.0 0.0.0.255 area 100


IOU3
IOU3(config)#route ospf 10
IOU3(config-router)#network 172.16.1.0 0.0.0.255 area 100

建立好OSPF

執行show ip route

發現多了172.16.1.0的路由,執行ping 172.16.1.20與172.16.1.30都能正常ping通