Operational-Mode Commands

CLI Operational Mode Command Categories

CLI operational mode commands fall into the following broad categories:

• Operational mode commands for monitoring and troubleshooting—The following commands perform functions related to information and statistics about the software and to test network connectivity.

  • clear—Clear statistics and protocol database information.

  • file—Perform file operations.

  • mtrace—Trace a multicast path from source to receiver.

  • 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 current configuration and information about interfaces, routing protocols, routing tables, routing policy filters, system alarms, and the chassis.

  • test—Test the configuration and application of policy filters and autonomous system (AS) path regular expressions.

  • traceroute—Trace the route to a remote network host.

• Commands for restarting software processes—The commands in the restart hierarchy restart the various system processes, including the routing protocol, interface, and SNMP.

• A command—request—Perform system-level operations, including stopping and rebooting the router or switch and loading operating system images.

• A command—start—Exit the CLI and start a UNIX shell.

• A command—configure—Enter configuration mode, which provides a series of commands that configure the system, including the routing protocols, interfaces, network management, and user access.

For more information about the CLI operational mode commands, see the CLI Explorer. Alternatively, you can enter ? at the operational mode command prompt to view a list of available commands.

Commonly Used Operational Mode Commands

The following table lists some operational commands you may find useful for monitoring router or switch operation.

Table 1: Commonly Used Operational Mode Commands

Items to Check	Description	Command
Software version	Versions of software running on the router or switch	show version
Log files	Contents of the log files	monitor
	Log files and their contents and recent user logins	show log
Remote systems	Host reachability and network connectivity	ping
	The route to a network system	traceroute
Configuration	Current system configuration	show configuration
File manipulation	List of files and directories on the router or switch	file list
	Contents of a file	file show
Interface information	Detailed information about interfaces	show interfaces
Chassis	Chassis alarm status	show chassis alarms
	Information currently on craft display	show chassis craft-interface
	Router or switch environment information	show chassis environment
	Hardware inventory	show chassis hardware
Routing table information	Information about entries in the routing tables	show route
Forwarding table information	Information about data in the kernel’s forwarding table	show route forwarding-table