Almost all Cisco devices use Cisco IOS to operate and Cisco CLI to be managed. The basic CLI commands for all of them are the same, which simplifies Cisco device management. Here is a Cisco commands cheat sheet that describes the basic commands for configuring, securing and troubleshooting Cisco network devices. Use this command to reload at a specific time. Reload at 00:00. Proceed to configure the router as needed. As long as no configuration changes are saved, the router will revert to its previous configuration when it reloads. If configuration changes are successful, this code will stop the pending reload: reload cancel. Cisco# reload slot 3 Proceed with reload? confirm ←エンター上記でスタックメンバー番号3番のスイッチだけ再起動されます。 atオプションの利用例は以下の通りです。.

The Cisco IOS CLI is the main user interface for configuring, maintaining, and troubleshooting most Cisco devices. From this user interface, you can directly execute all Cisco IOS commands, and it doesn’t matter how you reach the Cisco IOS platform; you can enter any CLI command from a remote, console, or terminal interface.

In this Cisco Commands cheat sheet article, we’ll go through the most crucial set of Cisco IOS commands that you'll need as an admin daily. You can use this concise set of commands for a quick reference as needed!

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1. Cisco IOS Command Hierarchy

The commands in Cisco IOS are hierarchical structured. Knowing the difference between the different modes (and how to move across) will help you configure, monitor, or troubleshoot a router easier.

There are currently eight modes in Cisco IOS commands.

Prompt	Abbreviation	Description
Router>	U	User EXEC mode, is the first level of access.
Router#	P	Privileged EXEC mode. The second level of access, accessible with the “enable” command.
Router(config)#	G	Configuration mode. Accessible only via the privileged EXEC mode.
Router(config-if)#	I	Interface mode. Level accessible via configuration mode.
Router(config-router)#	R	Routing mode. Level within configuration mode.
Router(config-line)#	L	Line level (vty, tty, async). Accessed via the configuration mode
Router(config-vlan)#	V	Config-vlan, accessible via the global configuration mode.
Switch(vlan)#	VD	Vlan database, accessible from the privileged EXEC mode.

Commands To Move Between These Six Modes:

Command	Mode	Description
enable	U	Moves from User to Privileged mode.
logout	U	Exit User mode.
configure <terminal>	P	Moves from Privileged to Configure mode.
disable	P	Exit user mode.
Interface <interface description>	G	Enter interface configuration mode.
vlan vlan-id	G	Moves to configure vlan mode.
Vlan database	P	Enter vlan database from Privilege mode.
line	G	Enter line from Global configuration mode.
exit end	G, R, L, V	return to previous mode.

2. Fundamentals — Basic Configuration

The following are the fundamental Cisco IOS commands. These commands give you the necessary base to move to more advanced and specific commands.

Command	Mode	Description
show version	U,P	Display information about IOS and router.
show interfaces	U,P	Display physical attributes of the router’s interfaces.
show ip route	U,P	Display the current state of the routing table.
show access-lists	P	Display current configured ACLs and their contents.
show ip interface brief	P	Displays a summary of the status for each interface.
show running-config	P	Display the current configuration.
show startup-config	P	Display the configuration at startup.
enable	U	Acces Privilege mode
config terminal	P	Access Configuration mode.
interface <int>	G	Enter interface configuration.
ip address <ip address> <mask>	I	Assign an IP address to the specified interface.
shutdown no shutdown	I	Turn off or turn on an interface. Use both to reset.
description <name-string>	I	Set a description to the interface.
show ip interface <type number>	U,P	Displays the usability status of the protocols for the interfaces.
show running-config interface interface <slot/number>	P	Displays the running configuration for a specific interface.
hostname <name>	G	Set a hostname for the Cisco device.
enable secret <password>	G	Set an “enable” secret password.
copy running-config startup-config	P	Saves the current (running) configuration in the startup configuration into the NVRAM. The command saves the configuration so when the device reloads, it loads the latest configuration file.
copy startup-config running-config	P	It saves (overwrites) the startup configuration into the running configuration.
copy from-location to-location	P	It copies a file (or set of files) from a location to another location.
erase nvram	G	Delete the current startup configuration files. The command returns the device to its factory default.
reload	G	Reboot the device. The NVRAM will take the latest configuration.
erase startup-config	G	Erase the NVRAM filesystem. The command achieves the similar outcome as “erase nvram”

3. Network Access

This section covers all popular Cisco’s network access protocols. From how to configure and verify VLANs, trunks, to Layer 2 discovery protocols like CDP and LLDP. We’ll also cover simple Etherchannel, Rapid PVST+ Spanning Tree Protocol configuration.

Command	Mode	Description
cdp run no cdp run	P	The “cdp run” command enables Cisco Discovery Protocol. The “no cdp run” disables it.
show cdp	P	Display global information for CDP.
show cdp neighbors

Cisco Reload Slot Command