ccna-notes

Cisco IOS CLI cheat sheet

Modes

Mode	Description
>	User EXEC mode
#	Privileged EXEC mode
(config)#	Global configuration mode
(config-if)#	Interface configuration mode

Passwords

Mode	Command	Description
(config)#	enable password <password>	Set plain text password to
(config)#	service password-encryption	Use Cisco’s Type 7 encoding
(config)#	enable secret <password>	Set MD5 hashed password to and disable old passwords

Basics

Mode	Command	Description
>	enable	Change to Privileged EXEC mode
	exit	Exit current mode
	<text>?	Show possible commands for the current mode starting with
	<command> ?	Show possible options to complete the command with
	no <command>	Disable a feature/function or reverse the action of
	do <command>	Run in Privileged EXEC mode
#	configure terminal	Enter Privilleged EXEC mode
#	show running-config	Show current config
#	show startup-config	Show startup config
#	write	Save running-config as startup-config
#	write memory	Save running-config as startup-config
#	copy running-config startup-config	Save running-config as startup-config
#	ping <ip_address>	Ping
#	show mac address-table	Show the MAC address table
#	show arp	View the ARP table and show all ARP entries
#	show ip interface brief	Show interfaces status and configured IP addresses
#	show interfaces status	Show L2 nad L3 info about the interfaces and their status
#	show interfaces <interface>	Show all available info about interface
#	show ip route	View routing rable
(config)#	shutdown	Disable interface
(config)#	clear mac address-table	Manually clear the MAC address table
(config)#	clear mac address-table dynamic <interface>	Clear MAC address table entry for interface
(config)#	interface <interface_name>	Enter config mode
(config)#	interface range <interface_start> - <interface_stop>	Enter interface config mode for all interfaces (including) through
(config)#	ip route <ip_address> <netmask> <next_hop>	Add static route to routing table
(config)#	ip route <ip_address> <netmask> <exit_interface>	Add static route to routing table using only the interface name
(config)#	ip route <ip_address> <netmask> <exit_interface> <next_hop>	Add static route to routing table using interface name and next-hop
(config-if)#	ip address <ip_address> <subnet_mask>	Configure interface IP address
(config-if)#	speed <speed>	Manually configure interface/s speed
(config-if)#	duplex <duplex>	Manually configure interface/s duplex
(config-if)#	description <text description>	Set the description field for the interface to