Network technologies and trends

Aug 24 2008   6:20AM GMT

How to reset the Cisco Catalyst Switch to Factory Defaults



Posted by: Yasir Irfan
Tags:
Cisco 2950
Cisco 6500
Cisco Learning
Cisco Tips
Network Troubleshooting
Networking
Switches

To reset the Cisco Catalyst switches to factory defaults, you need access to the Cisco Catalyst Switch console through either a physical console or a Telnet connection. You also need the console/enable passwords. If you forget the console and enable password of your Cisco Catalyst Switch , you cannot reset the Cisco Catalyst Switch  configuration to factory default to reset the password.

So you have decided to reset the Cisco Catalyst  Switch to factory default settings or else to delete the complete configuration along with VLAN data, here is the easy way.Log in to your Cisco Switch, in global configuration mode issue the following commands

ITKE# write erase
ITKE # delete flash:vlan.dat
ITKE # reload

Here is the graphical snap shots I took while reseting the Cisco Catalyst 3550 Switch.

This snap shot is before reseting with exsisting configuration.

Switch1

 

Now lets issue the following commands to reset the Cisco Catalyst Switch to factory default setting,

ITKE# write erase
ITKE # delete flash:vlan.dat
ITKE # reload

Switch2

 

After reload you will see the following

Switch3

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  • BlankReg
    "If you forget the console and enable password of your Cisco Catalyst Switch , you cannot reset the Cisco Catalyst Switch  configuration to factory default to reset the password."This is not quite correct. Almost all of the switches will allow you to reset to factory default if you do not know the password. Usually, on the smaller switches, this is achieved by going to 'boot' mode, by repowering the switch while pressing the mode button on the front. You can then delete the config file, or rename it, also rename or delete the vlan.dat file, and repower the switch. It is then in the same state as when it left the factory.
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