SUMMARY experiment
1. ospf using dynamic routing protocols Internet communication between the respective sub-network
2 using dynamic routing protocols ospf Internet communication between the different autonomous regions
experimental procedure
1. ospf using dynamic routing protocols of each subnet network Internet communication between the
topology, see upper
router and PC configurations
step: PC are arranged and address of the router
PC configuration:
R0: 
Rl: 
step two: the ospf protocol
R0:
Rl:
step: encapsulation protocol :
R0:
R1:
the fourth step: test
found that each PC can ping the IP address of the router
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Experimental first end portion, a second portion following the experiment began.
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拓扑图
第一步：分别给PC和路由器配置IP
PC0：
PC1：
路由器的IP配置：
R0:
R1:
R2:
R3:
第二步：ospf协议的配置
注：先创建骨干区域在创建非骨干区域的ospf协议。
骨干区域的ospf协议：
R1:
Router(config)#router ospf 1
Router(config-router)#network 12.0.0.2 0.0.0.255 area 0
R2:
Router(config)#router ospf 1
Router(config-router)#network 12.0.0.3 0.0.0.255 area 0
非骨干区域的ospf协议：
Arae 1：
R0:
R1:
Router(config)#router ospf 1
Router(config-router)#network 11.0.0.2 0.0.0.255 area 1
2 Area:
R2:
Router (config) #router OSPF. 1
Router (config-Router) #network 23.0.0.3 0.0.0.255 Area 2
R3:
third step: encapsulation protocol
fourth step: testing
found also mutually between autonomous regions you can communicate with
