31 Days Before Your CCNA Exam

168 31 Days Before Your CCNA ExamFigure 16-1Basic Router Configuration Topology192.168.1.0/24192.168.2.0/24192.168.3.0/24PC1Fa0/0R1S0/0/0DCES0/0/0R2Fa0/0PC2DeviceR1R2PC1PC2InterfaceFa0/0S0/0/0Fa0/0S0/0/0N/AN/AIP Address192.168.1.1192.168.2.1192.168.3.1192.168.2.2192.168.1.10192.168.3.10Subnet Mask255.255.255.0255.255.255.0255.255.255.0255.255.255.0255.255.255.0255.255.255.0Default GatewayN/AN/AN/AN/A192.168.1.1192.168.3.1Table 16-1 shows the basic router configuration command syntax used to configure R1 in the followingexample.Table 16-1Basic Router Configuration Command SyntaxNaming the routerSetting passwordsRouter(config)#hostname nameRouter(config)#enable secret passwordRouter(config)#line console 0Router(config-line)#password passwordRouter(config-line)#loginRouter(config)#line vty 0 4Router(config-line)#password passwordRouter(config-line)#loginConfiguring a message-of-the-day banner Router(config)#banner motd # message #Configuring an interfaceRouter(config)#interface type numberRouter(config-if)#ip address address maskRouter(config-if)#description descriptionRouter(config-if)#no shutdownSaving changes on a routerExamining the output of show commandsRouter#copy running-config startup-configRouter#show running-configRouter#show ip routeRouter#show ip interface briefRouter#show interfacesLet’s walk through a basic configuration for R1. First, we enter privileged EXEC mode and thenwe enter global configuration mode:Router>enableRouter#config t