CLI Modes

The CLI has two modes: operational and configuration. In operational mode, you monitor and troubleshoot the software, network connectivity, and the router by entering CLI commands.

You configure the JUNOS software by entering a configuration mode and creating a hierarchy of configuration statements. For additional information about configuring the router, see the JUNOS Internet Software Configuration Guide: Getting Started.

You monitor and troubleshoot the router by using the operational mode commands described in this manual.

This chapter discusses the operational CLI commands, including the following topics:

• CLI Command Hierarchy
• CLI Operational Commands
• Use the CLI
• Control the CLI Environment
• Set the Current Date and Time
• Display CLI Command History
• Monitor Who Uses the CLI
• Summary of CLI Operational Commands
• Summary of CLI Environment Commands