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Method of Accessing Switch IOS

in Networking Notes on May 20, 2013
  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)#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”

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