CLI Operational Mode Commands

When you first log in to the router and the CLI starts, you are in CLI operational mode. At this level, there are several broad groups of CLI commands:

• Commands for controlling the CLI environment—The commands in the set hierarchy configure the CLI display screen. For information about these commands, see Controlling the CLI Environment.
• Monitoring and troubleshooting commands—The following commands let you display information and statistics about the software running on the router, such as routing table entries, and test network connectivity. Using these commands is discussed in various places in this manual.

• clear—Clear protocol database information.
• monitor—Perform real-time debugging of various software components, including the routing protocols and interfaces.
• ping—Determine the reachability of a remote network host.
• show—Display the configuration currently running on the router, and display information about the system, including interfaces, routing protocols, routing tables, routing policy filters, and the chassis.
• test —Test the configuration and application of policy filters and AS path regular expressions.
• traceroute—Trace the route to a remote network host.

• Commands for connecting to other network systems—The ssh command allows you to open secure shell connections and the telnet command allows you to open telnet sessions to other hosts on the network. For information about these commands, see System Management Operational Mode Commands.
• Commands for copying files—The file and copy commands allow you to copy files from one location on the router to another, from the router to a remote system, or from a remote system to the router. For information about these commands, see System Management Operational Mode Commands.
• Commands for restarting software processes—The commands in the restart hierarchy allow you to restart the various JUNOS software processes, including the routing protocol, interface, SNMP, and SNMP MIB II processes. For information about these commands, see System Management Operational Mode Commands, the JUNOS System Basics Configuration Guide, and the JUNOS Network Management Configuration Guide.
• A command—request—for performing system-level operations, including stopping and rebooting the router and loading JUNOS software images. For information about this command, see System Management Operational Mode Commands.
• A command—start—to exit from the CLI and start a UNIX shell. For information about this command, see System Management Operational Mode Commands.
• A command—configure—for entering configuration mode, which provides a series of commands that let you configure the JUNOS software, including the routing protocols, interfaces, network management, and user access. For information about the CLI configuration commands, see the JUNOS System Basics Configuration Guide.
• A command—quit—for exiting from the CLI. For information about this command, see System Management Operational Mode Commands.