5. Configure the interface ip address and Loopback interface ip address of each router in the ospf single-domain dynamic routing protocol, steps ======================================================== ========================================================== ========= configure OSPFR1: www.2cto.com (config) # router ospf 1 (config-router) # router-id 1.1.1.1 (config-router) # network 1.1.1.1 0.0.0.0 area 0 (config-router) # network 10.0.0.0 0.0.0.3 area 0 (config-router) # network 40.4.4.0 0.0.0.3 area 0 (config-router) # network 192.168.1.0 0.0.0.255 area 0 Route R2: (config) # router ospf 1 (config-router) # router-id 2.2.2.2 (config-router) # network 2.2.2.2 0.0.0.0 area 0 (config-router) # network 10.0.0.0 0.0.0.3 area 0 (config-router) # network route 2.2.0 0.0.0.3 area 0 (config-router) # network 192.168.2.0 0.0.0.255 area 0 Route R3: (config) # router ospf 1 (config-router) # router-id 3.3.3.3 (config-router) # network 3.3.3.3 0.0.0.0 area 0 (config-router) # network expansion 2.2.0 0.0.0.3 area 0 (config-router) # network 30.3.3.0 0.0.0.3 area 0 (config-router) # network 192.168.3.0 0.0.0.255 area 0 partition R4: www.2cto.com (config) # router ospf 1 (config-router) # router-id 4.4.4.4 (config-router) # network 4.4.4.4 0.0.0.0 area 0 (config-router) # network 30.3.3.0 0.0.0.3 area 0 (config-router) # network 40.4.4.0 0.0.0.3 area 0 (config-router) # network 192.168.4.0 0.0.0.255 area 0 ================================== ========================================================== author Xun ruyu