31 Days Before Your CCNA Exam

Day 27 47Figure 27-2Sources for Cisco Device ConfigurationConsole PortInterfacesVirtual TerminalTelnetAuxiliary Port(Router Only)TFTPPC or UNIX ServerWeb or NetworkManagementServerThe two ways to configure Cisco devices are as follows:■■Console terminal: Use an RJ-45 to RJ-45 rollover cable and a computer with the terminalcommunications software (such as HyperTerminal, Tera Term, and so on) to establish a directconnection.Remote terminal: Use an external modem connected to the auxiliary port—routers only—toremotely configure the device.Once configured, you can access the device using three additional methods:■■■Establish a terminal (vty) session using Telnet.Configure the device through the current connection (console or auxiliary), or download apreviously written startup-config file from a Trivial File Transfer Protocol (TFTP) server onthe network.Download a configuration file using a network management software application such asCiscoWorks.CLI EXEC SessionsCisco IOS separates the EXEC session into two basic access levels:■■User EXEC mode: Access to only a limited number of basic monitoring and troubleshootingcommands, such as show and ping.Privileged EXEC mode: Full access to all device commands, including configuration andmanagement.