Difference between revisions of "Reset a Cisco 2800 series router to factory default without the enable password"
From Peter Pap's Technowiki
| Line 23: | Line 23: | ||
8. Enter enable mode and set the router to boot from the right place | 8. Enter enable mode and set the router to boot from the right place | ||
| − | enable | + | Router>'''enable''' |
| − | conf t | + | Router>'''conf t''' |
| − | config-register 0x2102 | + | Router(config)>'''config-register 0x2102''' |
| − | end | + | Router(config)>'''end''' |
| − | wr mem | + | Router>'''wr mem''' |
9. Reload the router to check it worked properly | 9. Reload the router to check it worked properly | ||
Latest revision as of 23:37, 3 February 2013
So you have a router you want to reset, but don't know the enable password. Here's what to do:
1. Connect to the serial console.
2. Power off the router and then power on.
3. Send the router a BREAK. This should bring you to the rommon prompt
4. Type this command at the rommon prompt in order to boot from Flash.
rommon 1 > confreg 0x2142
5. Reset the router.
rommon 2 > reset
6. The router should now boot into the Initial config dialogue:
Would you like to enter the initial configuration dialog? [yes/no]: yes
7. Follow the prompts, to set a basic config.
8. Enter enable mode and set the router to boot from the right place
Router>enable Router>conf t Router(config)>config-register 0x2102 Router(config)>end Router>wr mem
9. Reload the router to check it worked properly
If you want to preserve the running config, follow the instructions here.
