4、R4(config-router)#router-id4.4.4.4R4(config-router)#network4.4.4.0255.255.255.0area0R4(config-router)#network192.168.11.0255.255.255.0area0R4(config-router)#auto-costreference-bandwidth1000实验调试R1#showipospfneighborNeighborID Pri State DeadTime Address Interface4.4.4.4
7、网络的接口优先级为0,修改接口优先级的命令是“ipospfpriority”,如果接口的优先级被设置为0,那么该接口将不参与DR选举;●如果前两者相同,最后看路由器ID,路由器ID最高的被选举成DR。⑤DR选举是非抢占的,除非人为地重新选举。重新选举DR的方法有两种,一是路由器重新启动;二是执行“clearipospfprocess”命令。R1#debugipospfadjR1#clearipospfprocessR1#showipospfneighborNeighborID Pri