This document discusses basic Cisco router configurations including configuration modes, setting the device hostname, banners, security settings, interface configurations, and show commands. The configuration modes covered are user/privileged mode, global configuration mode, interface configuration mode, and sub-interface configuration mode. It also covers saving the running configuration, backing it up to a TFTP server, and reloading the device.

1. Manage Cisco Router: Basic Configurations www.kadircikis.com

2. Configuration Modes
• IOS, used to operate and configure the network services and devices

3. Configuration Modes

4. Configuration Modes
User / Privileged Mode:
Router>enable
Router#
Router#disable
Router>

5. Configuration Modes
Global Configuration Mode:
Router#configure terminal
Router(config)#

6. Configuration Modes
Interface Configuration Mode:
Router(config)#interface fastethernet 0/0
Router(config-if)#

7. Configuration Modes
Sub-Interface Configuration Mode:
Router(config)#interface fastethernet 0/0.1
Router(config-subif)#

8. Configuration Modes
Configuring The Connection Lines:
Line Configuration Mode (Console – Telnet)
Router(config)#line console 0
Router(config-line)#
Router(config)#line vty 0 4
Router(config-line)#

9. Help Menus
Cisco IOS Usage and Help Menu:
Router>?
Exec commands:
access-enable Create a temporary Access-List entry
atmsig Execute Atm Signalling Commands
cd Change current device
clear Reset functions
connect Open a terminal connection
dir List files on given device
disable Turn off privileged commands
disconnect Disconnect an existing network connection
enable Turn on privileged commands
exit Exit from the EXEC
help Description of the interactive help system
lat Open a lat connection
lock Lock the terminal
login Log in as a particular user
logout Exit from the EXEC
-- More --

10. Help Menus
CLI Content Help:
Router# clok
Translating "CLOK"
% Unknown command or computer name, or unable to find computer address
Router# cl?
clear clock
Router# clock
% Incomplete command.
Router# clock ?
set Set the time and date
Router# clock set
% Incomplete command.

11. Help Menus
CLI Content Help:
Router# clock set ?
hh:mm:ss Current Time
Router# clock set 19:56:00
% Incomplete command.
Router# clock set 19:56:00 ?
<1-31> Day of the month
MONTH Month of the year
Router# clock set 19:56:00 04 8
^
% Invalid input detected at the '^' marker

12. Help Menus
CLI Content Help:
Router# clock set 19:56:00 04 August
% Incomplete command.
Router# clock set 19:56:00 04 August ?
<1993-2035> Year
Router# clock set 19:56:00 04 August 2015 ?
clock set 19:56:00 04 August 2015Router#
<cr>

13. Help Menus
Advanced Command-Line Features:
Ctrl-A Return to the begining of the command line
Ctrl-E Go to the end of the command line
Esc-B Goes back one word
Esc-F Moves forward one word
Ctrl-B Goes back one character
Ctrl-F Moves forward one character
Ctrl-D Delete one character

14. CTRL+Z Command
Router(config)#^Z
Router#
Router(config-subif)#^Z
Router#

15. Basic Configurations
Device Hostname Configuration
Router#configure terminal
Router(config)#hostname R1
R1(config)#

16. Basic Configurations
Device Banner Configuration
Router(config)#banner motd #
Enter TEXT message. End with the character ‘#’
$ Banner Text $
#
Router(config)#

17. Basic Configurations
Device Security Configuration
Specify the password for Privileged EXEC Mode
Router(config)#enable password Cisco (Clear Text)
Router(config)#enable secret Cisco (Hidden Text)

18. Basic Configurations
Device Security Configuration
Specify the password for AUX Connection
Router(config)#line aux 0
Router(config-line)#password Cisco
Router(config-line)#login

19. Basic Configurations
Device Security Configuration
Specify the password for Console Connection
Router(config)#line console 0
Router(config-line)#password Cisco
Router(config-line)#login

20. Basic Configurations
Device Security Configuration
Specify the password for Telnet Connection
Router(config)#line vty 0 4
Router(config-line)#password Cisco
Router(config-line)#login

21. Basic Configurations
Device Security Configuration
Router(config)#service password-encryption

22. Basic Configurations
Port Logins
Router(config)#interface s 1/1
Router(config)#interface fa 0/1
Router(config-if)#
*interface <type> <slot/port>

23. Basic Configurations
Port Opening
Router(config)#interface s 1/1
Router(config-if)#no shutdown
Router(config-if)#

24. Basic Configurations
Port IP Address Configuration
Router(config)#interface s 1/1
Router(config-if)#no shutdown
Router(config-if)#ip address 192.168.0.1 255.255.255.0
Router(config-if)#ip address 192.168.0.2 255.255.255.0 secondary
Router(config-if)#

25. Basic Configurations
Router#show running-config
Router#show startup-config

26. Basic Configurations
Saving the running configuration as the startup configuration
Router#copy running-config startup-config
Or;
Router#write

27. Basic Configurations
Configuration back up to TFTP Server
Router#copy running-config/startup-config tftp:
Address or name of remote host[]?
Destination filename [R1-confg]?

28. Basic Configurations
Deleting configuration and restarting the device
Router#erase startup-config
Router#reload

29. Show Commands
Router#show history
Router#show terminal

30. Show Commands
Router#show version
Router#show flash

31. Show Commands
Router#show interfaces
Router#show interface s 0/0/1
Router#show ip interface
Router#show ip interface brief
Router#show protocols
Router#show controllers

32. Do Command
• Used to run Privileged EXEC Mode commands while in any
configuration menu
Router(config-subif)#do show ip interfaces brief
Router(config-router)#do show ip route

33. Kadir ÇIKIŞ | MCT
Sistem ve Network Uzmanı
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