Home > IT Answers > Networking > How to delete router configuration
Mohadbazzi47
170 pts.
 How to delete router configuration
Cisco 2800, Cisco 2800 configuration, Cisco router configuration, Router configuration
I have a Cisco 2800 router and I tried to delete all the old configuration but its not deleted. Any idea about this problem?

Software/Hardware used:
hardware
ASKED: August 25, 2009  9:39 AM
UPDATED: April 19, 2013  2:38 PM
RELATED QUESTIONS
Answer Wiki:
The quick way is to do a write erase command when in enable mode. This is an old command, but it is still supported, and works on all the switches and routers. On switches, also delete the vlan.dat file in flash otherwise it still 'remembers' the vlans configured. When you have done the command, reload the router, and it is back to factory default. If it doesn't work, then check the config register is set to 0x2102, if not then do the following 
conf t
config-reg 0x2102
end
DO NOT SAVE AFTER DOING THIS COMMAND ! Then power off, and back on again (after 30 seconds).
Last Wiki Answer Submitted:  April 19, 2013  2:39 pm  by  Michael Tidmarsh   11,390 pts.
All Answer Wiki Contributors:  Michael Tidmarsh   11,390 pts. , BlankReg   12,245 pts.
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router(config)#write erase
router(config)#reload

This for deleting the old configuration and the new router it will be.

Alshreif
 10 pts.