2Configuration FundamentalsThe Dell Networking Operating System (OS) command line interface (CLI) is a text-based interface youcan use to configure interfaces and protocols.The CLI is largely the same for each platform except for some commands and command outputs. TheCLI is structured in modes for security and management purposes. Different sets of commands areavailable in each mode, and you can limit user access to modes using privilege levels.In Dell Networking OS, after you enable a command, it is entered into the running configuration file. Youcan view the current configuration for the whole system or for a particular CLI mode. To save the currentconfiguration, copy the running configuration to another location.NOTE: Due to differences in hardware architecture and continued system development, featuresmay occasionally differ between the platforms. Differences are noted in each CLI description andrelated documentation.Accessing the Command LineAccess the CLI through a serial console port or a Telnet session.When the system successfully boots, enter the command line in EXEC mode.NOTE: You must have a password configured on a virtual terminal line before you can Telnet intothe system. Therefore, you must use a console connection when connecting to the system for thefirst time.telnet 172.31.1.53Trying 172.31.1.53...Connected to 172.31.1.53.Escape character is '^]'.Login: usernamePassword:Dell>CLI ModesDifferent sets of commands are available in each mode.A command found in one mode cannot be executed from another mode (except for EXEC modecommands with a preceding do command (refer to the do Command section).You can set user access rights to commands and command modes using privilege levels.The Dell Networking OS CLI is divided into three major mode levels:32 Configuration Fundamentals
