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 System Basics Configuration Guide.

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 Mode Commands
• Using the CLI
• Controlling the CLI Environment
• Setting the Current Date and Time
• Setting the Current Date and Time from NTP Servers
• Displaying CLI Command History
• Monitoring Who Uses the CLI
• Routing Matrix CLI Enhancements
• Summary of CLI Operational Mode Commands
• Summary of CLI Environment Commands