02-07-2007 09:36 AM - edited 03-05-2019 02:13 PM
Hi-
I've got a Cisco 1720 router that I need to factory reset. I can connect to the console using hyperterminal (9600, 8N1). I reboot the router using the switch, then ctrl+break. I'm given a rommon 1> prompt. However, I can't seem to type the necessary confreg 0x2102
I've even tried turning on echo.
Any ideas???
THANK YOU
Solved! Go to Solution.
02-07-2007 10:07 AM
Cool,
I was starting to feel a little dumb up to this point. I'm glad it worked out... Rate if I helped
02-07-2007 09:41 AM
I believe it's 0x142 from Rommon,
Then boot, and change it if IOS
See:
02-07-2007 09:45 AM
Thanks for taking the time to reply!
I saw that link already. The problem is that when I'm at that first rommon 1 prompt, I can't seem to type anything.
I assumed it was a local echo problem, so I tried just entering confreg 0x142 (and others) followed by return. Nothing happens.
02-07-2007 09:49 AM
What happens when you type confreg and hit enter?
And are you at rommon1> or > prompt
02-07-2007 09:52 AM
this is at the rommon 1 > prompt. Nothing happens with confreg. See detailed post below.
02-07-2007 09:43 AM
02-07-2007 09:50 AM
I've tried just confreg [enter]
Nothing appears at the rommon 1 > prompt and no settings are displayed on screen. Just to make sure that I was still connected, I did another ctrl+break and get:
rommon 1 >
*** Reserved LVL 7 Interrupt ***
PC = 0xfff0b9c0, Vector = 0x500, SP = 0x80004de4
So I'm connected, but it doesn't seem like my other keystrokes are getting to the router when in rommon 1 >
If I let the device boot without ctrl+breaking, I am prompted for the username and password. I can type these in and the characters appear on screen.
02-07-2007 09:58 AM
I'll have to mull this a bit. If you're sure that Hyperterm is setup right (i.e. confirm it by accessing another Cisco Box console port)8 N 1 no flow control, then you may have corrupt ROM issues. The bottom line is that without rommon 1 interaction, you have no method of forcing base maintenance actions. And the only failed rommon issues I have ever run across are called into TAC and the subject unit replaced.
02-07-2007 10:02 AM
I'm going to give this a try on another 1700 router that we're going to have to do this on anyway. I'll get right back with you.
Thanks
02-07-2007 10:06 AM
I HATE HYPERTERMINAL and appologize for wasting your time. I tried using MTTTY, configured the same way 9600,8,n,1 no flow, and viola, confreg works.
Thank you so much for working through this with me.
02-07-2007 10:07 AM
Cool,
I was starting to feel a little dumb up to this point. I'm glad it worked out... Rate if I helped
02-07-2007 10:08 AM
All of the dumness is on me. And you didn't just help, you solved.
Thanks
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