一、组网需求
配置OSPF动态路由协议，让全网可以互通
二、组网拓扑
三、配置要点
根据规划，在设备接口上配置IP地址配置OSPF进程所有区域（area）必须与区域 0（area 0）相连接四、配置步骤
注意：配置之前建议使用 Ruijie#show interface status查看接口名称，常用接口名称有FastEthernet（百兆）、GigabitEthernet（千兆）和TenGigabitEthernet万兆,以下配置以千兆接口为例
1）根据规划，在设备接口上配置IP地址
SWA配置：
Ruijieconfig#interface GigabitEthernet 0/1
Ruijieconfig-if-GigabitEthernet 0/1#no switchport------>把接口属性改成路由接口
Ruijieconfig-if-GigabitEthernet 0/1#ip address 192.168.1.1 255.255.255.0------>配置IP地址
Ruijieconfig#interface Loopback 0 ------>作为OSPF的router-id
Ruijieconfig-Loopback 1#ip address 172.16.1.1 255.255.255.0
SWB配置：
Ruijieconfig#interface GigabitEthernet 0/1
Ruijieconfig-if-GigabitEthernet 0/1#no switchport
Ruijieconfig-if-GigabitEthernet 0/1#ip address 192.168.1.2 255.255.255.0
Ruijieconfig#interfaceGigabitEthernet 0/2
Ruijieconfig-GigabitEthernet 0/2#no switchport
Ruijieconfig-GigabitEthernet 0/2#ip address 192.168.2.2 255.255.255.0
Ruijieconfig#interfaceGigabitEthernet 0/3
Ruijieconfig-GigabitEthernet 0/3#no switchport
Ruijieconfig-GigabitEthernet 0/3#ip address 192.168.3.2 255.255.255.0
Ruijieconfig#interface Loopback 0
Ruijieconfig-Loopback 0#ip address 172.16.1.2 255.255.255.0
SWC配置 :
Ruijieconfig#interface GigabitEthernet 0/1
Ruijieconfig-if-GigabitEthernet 0/1#no switchport
Ruijieconfig#ip address 192.168.2.1 255.255.255.0
Ruijieconfig#interface Loopback 0
Ruijieconfig-Loopback 0#ip address 172.16.1.3 255.255.255.0
SWD配置 :
Ruijieconfig#interface GigabitEthernet 0/1
Ruijieconfig-if-GigabitEthernet 0/1#no switchport
Ruijieconfig#ip address 192.168.3.1 255.255.255.0
Ruijieconfig#interface Loopback 0
Ruijieconfig-Loopback 0#ip address 172.16.1.4 255.255.255.0
2）配置OSPF进程
SW A配置:
Ruijieconfig#router ospf 10 ------>开启ospf 10 进程
Ruijieconfig-router#network 192.168.1.0 0.0.0.255 area 0------>把包含192.168.1.0 /24的网络划入区域 0
SW B配置：
Ruijieconfig#router ospf 10
Ruijieconfig-router#network 192.168.1.0 0.0.0.255 area 0
Ruijieconfig-router#network 192.168.2.0 0.0.0.255 area 1
Ruijieconfig-router#network 192.168.3.0 0.0.0.255 area 2
SW C配置:
Ruijieconfig#router ospf 10
Ruijieconfig-router#network 192.168.2.0 0.0.0.255 area 1
SW D配置:
Ruijieconfig#router ospf 10
Ruijieconfig-router#network 192.168.3.0 0.0.0.255 area 2
3）保存配置
Ruijieconfig-router#end
Ruijie#write ------>确认配置正确，保存配置
五、验证命令：
Ruijie#show ip route
Codes:C - connected, S - static, R - RIP, B - BGP
O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default
Gateway of last resort is no set
C172.16.1.0/24 is directly connected, Loopback 0
C172.16.1.1/32 is local host.
C192.168.1.0/24 is directly connected, GigabitEthernet 0/1
C192.168.1.2/32 is local host.
O IA 192.168.2.0/24 [110/2] via 192.168.1.1, 00:55:30, GigabitEthernet 0/1------>O 表示OSPF学到的路由，O IA表示学到其他区域（area）路由条目
O IA 192.168.3.0/24 [110/2] via 192.168.1.1, 00:56:06, GigabitEthernet 0/1
Ruijie# show ip ospf neighbor ----查看OSPF邻居状态
OSPF process 10, 1 Neighbors, 1 is Full:
Neighbor ID Pri State Dead Time Address Interface
172.16.1.2 1 Full/BDR 00:00:38192.168.1.1 GigabitEthernet 0/1
