Cisco certified network associate. (CCNA) new syllabus – 200-120 (R&S)

If you learn about cisco routing and switching firstly you should know basic router modes?


Router> -------------------> user exec mode
Router>
Router>enable
Router#-------------------------------->privilege mode
Router#config terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Router(config)#

Router(config)# ---------------------------->global configuration mode

Today I explain you how to view your cisco router history ?

Think this is first time you got cisco router, you do not know who use this before and you need to know what are the configurations done by previous.

Firstly open hyper terminal or putty in your pc then come to the user exec mode….

Then type “enable” and login to privilege mode…..

Then type “ show history”

Then you can see what are configurations done by before.

Take the example and do it with packet tracer…………………………………………..

--- System Configuration Dialog ---

Continue with configuration dialog? [yes/no]: no

Press RETURN to get started!


Router>enable

Router#show history

enable

show history

Router#


so there is nothing because there are no previous configurations in cisco router.

then i explan you how to erase previous configurations....
Router>
Router>
Router>enable
Router#erase startup-config
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
%SYS-7-NV_BLOCK_INIT: Initialized the geometry of nvram

Router#

now router has ot any configurations yet....it worked as new router..
keep practice those things in cisco packet tracer..
i will see you with new cisco commands...........

LAAHIRU FERNANDO

laahirufernando1@writeme.com