Method of Accessing Switch IOS

1. Direct Access through Console port
2. Access through LAN by Telnet
3. SSH (source socket shell)application

Step1. Direct access through console port

• After physical connectivity
•  Open hyper terminal application as, start—programs—accessories—-   communication—-Hyper terminal.
• Give any name to the session
• Select 9600 speed
• Select COM port either COM-I or COM-II (this will open commend line 

Host Name Configuration:

•  Switch> enable
•  Switch# config t
•   Switch(config)# hostname inam
•   Inam(config)# exit
•   Inam#

To Set system Clock, Date and Time on Switch or Router:

•   Router>enable
•  Router# clock set 08:50:25 2 Dec 2008

How give password to different modes of switch:

•  Switch>
• Switch >enable
• Switch#

•   Switch #configure terminal
•  Switch(configure)# line console 0
•  Switch(config-line)#password ccna             ConsolePort password
• Switch(config-line)#login                    
•  Switch(config-line)#exit

  Switch(configure)#

•  Switch(configure)#line vty 0
• Switch(config-line)#password inara          Virtual terminal password
• Switch(config-line)#exit
•  Switch(configure)#

Switch(configure)#enable password mcse——————Privilege mode password

How to show / view the configuration of switch:

Switch# show running-configure

How to save these configurations:

For saving different commends and configuration is

Switch# Copy running-configure startup-configure        OR

Switch# write mem

How to encrypt the password

Switch(configure)# service password-encryption

How to remove the Password:

To remove the console password as

• Switch(configure)#line console 0
• Switch(config-line)#no password
• Switch(config-line)#exit
• Switch(configure)#

Now to remove the privilege mode password

witch(configure)#no enable password

Now to remove the virtual terminal password

• Switch(configure)#line vty 0
• Switch(config-line)#no password
• Switch(config-line)#exit
• Switch(configure)#

And save it

To show these configurations:

Switch# show running-configure

Password recovery:

If we loss the password or other some thing happen then we can recover our password as

• Turn off the switch
• Then Turn on the switch
•  Hold/Press the mode button of the switch for a few seconds until it enter in mini IOS as “switch:”
• nitialized the flash memory as
• Switch: flash-init

The password are laying in config directory so delete it as

• Switch: del flash:config.old
• Switch: Y (for confirmation press Y for yes)
• Switch: rename flash:config.text flah:fonfig.old

For checking the directory

• Switch: dir flash:/

And now boot the IOS as

•  Switch: boot

And enter to configuration mode and remove the password and save it as

• Switch> enable
• Switch# configure terminal
• Switch(config)# line cons 0
• Switch(config)# no password
• Switch (config)# exit
• Switch #
• Switch # copy running-configure startup-configure or “write mem”