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cisco怎么配置OSPF虚链路cisco配置OSPF虚链路的方法这个配置将验证一个OSPF虚电路(Virtual-Link)的过程,重点在观察虚链路连接的临时网络与正常区域间路由有何区别。上图中区域4(area4)没有和area0直接相连。在R2与R3之间配置了一条虚链路。//R1//intlo0ipad1.1.1.1255.255.255.0inte0ipad192.1.1.1255.255.255.0routeros1network192.1.1.00.0.0.255area0//R2//intlo0ipad2.2.2.2255.255.255.0inte0ipad192.1.1.2255.255.255.0inte1ipad193.1.1.2255.255.255.0routeros1network192.1.1.00.0.0.255area0network193.1.1.00.0.0.255area1//R3//intlo0ipad3.3.3.3255.255.255.0inte1ipad193.1.1.3255.255.255.0inte0ipad194.1.1.3255.255.255.0routeros1network193.1.1.00.0.0.255area1network194.1.1.00.0.0.255area4//R4//intlo0ipad4.4.4.4255.255.255.0inte0ipad194.1.1.4255.255.255.0routeros1network194.1.1.00.0.0.255area4基本配置完成后,我们在每台路由器上分别来验证一下:r1#shiposneiNeighborIDPriStateDeadTimeAddressInterface2.2.2.21FULL/BDR00:00:33192.1.1.2Ethernet0/0r1#r1#shipro1.0.0.0/24issubnetted,1subnetsC1.1.1.0isdirectlyconnected,Loopback0OIA193.1.1.0/24[110/20]via192.1.1.2,00:00:19,Ethernet0/0C192.1.1.0/24isdirectlyconnected,Ethernet0/0//注意R1上有关于193.1.1.0的路由条目,是属于IA类型(域间路由)r2#shiposneiNeighborIDPriStateDeadTimeAddressInterface1.1.1.11FULL/DR00:00:35192.1.1.1Ethernet0/03.3.3.31FULL/BDR00:00:35193.1.1.3Ethernet1/0r2#r2#r2#shipro2.0.0.0/24issubnetted,1subnetsC2.2.2.0isdirectlyconnected,Loopback0C193.1.1.0/24isdirectlyconnected,Ethernet1/0C192.1.1.0/24isdirectlyconnected,Ethernet0/0r3#shiposneiNeighborIDPriStateDeadTimeAddressInterface2.2.2.21FULL/DR00:00:32193.1.1.2Ethernet1/04.4.4.41FULL/DR00:00:34194.1.1.4Ethernet0/0r3#shipro3.0.0.0/24issubnetted,1subnetsC3.3.3.0isdirectlyconnected,Loopback0C193.1.1.0/24isdirectlyconnected,Ethernet1/0OIA192.1.1.0/24[110/20]via193.1.1.2,00:02:49,Ethernet1/0C194.1.1.0/24isdirectlyconnected,Ethernet0/0//注意R3中有关于192.1.1.0的路由是属于IA类型(域间路由)r4#shiposneiNeighborIDPriStateDeadTimeAddressInterface3.3.3.31FULL/BDR00:00:33194.1.1.3Ethernet0/0r4#shipro4.0.0.0/24issubnetted,1subnetsC4.4.4.0isdirectlyconnected,Loopback0C194.1.1.0/24isdirectlyconnected,Ethernet0/0//R4上没有关于AREA0内的任何路由信息我们下面在R2、R3上添加Virtual-link的配置:R