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New Member

3825 not booting properly

I have a 3825 that is supposed to be in ROMMON mode (according to Cisco documentation), but, I'm not getting the rommon1> symbol, just random characters after hitting the Enter key.

The 'SYS' led on the front panel is flashing green.

  • WAN Routing and Switching
21 REPLIES

Re: 3825 not booting properly

Just a suggestion, but the symptoms you describe suggest that it is possibly a problem with your terminal/console session settings?

If the console session settings are different to that what is configured on your network device, then random characters do appear.

Try changing your baud setting to 9600-8-N-1, if this fails gradually increase the speed.

HTH

Allan.

New Member

Re: 3825 not booting properly

Allan,

Yes, this is the setting I'm using. I was using this setting when I started having the problems I'm experiencing now. I will try increasing the rate as suggested...

New Member

Re: 3825 not booting properly

Allan,

No, changing the bits per second only changes the character(s) size...

Re: 3825 not booting properly

When you make the change on the terminal setting do you disconnect and reconnect each time? I have a USB Console cable, and have to connect and reconnect everytime the session is interupted.

Also have you tried a different console cable?

Is this the first time you attempted to connect to the router via console? curious as to why you think it should be in rommon>

Try reload the router whilst connected via the console with the default baud settings and see if see any messages on the console during boot.

Allan.

New Member

Re: 3825 not booting properly

Allan,

The console cable is fine. When I initially booted the router, it was in rommon mode as the image wouldn't load. I tried transferring an image via tftp, but, kept getting errors. As it's been a few weeks, I do not remember the command I typed that brought the router to the current state.

According to the Cisco documentation, I should be in rommon mode as the 'SYS' led on the front panel is flashing green.

Cisco Employee

Re: 3825 not booting properly

Hello,

if your stuck rommon and you need to load an image here's the recovery procedure.

http://www.cisco.com/en/US/products/hw/routers/ps274/products_tech_note09186a008009429f.shtml

if you have an image on the flash card you can always try a manual boot via rommon

dir slot0:

boot slot0:(image name)

or

just try just hitting i from the rommon prompt

good luck

New Member

Re: 3825 not booting properly

No, neither suggestion works. When I hit i (or enter), I just get random characters (i.e.![fYd) whenever I hit any key.

As stated before, I'm not in rommon mode...I'm stuck in some other mode that I cannot get out of. As mentioned before, the 'SYS' led is flashing green on the front panel...this is the only fault indication I'm receiving.

Re: 3825 not booting properly

Hi Chris, what image were you attempting to tftp at the time when you starting experiencing these issues?

Was it the IOS Software, or actual IOS ROMMON that was attempted?

If you attempted to upgrade the ROMMON and was successful, then the router will be reloaded automatically and either boot back into ROMMON or load the IOS depending on the conf-reg.

Allan.

New Member

Re: 3825 not booting properly

Well, this router already had an image before I attempted to configure this a few weeks ago, but, the image wouldn't load properly and I was forced into rommon. While in rommon, I attempted to tftp a known good image (c3825-advipservicesk9-mz.124-6.T7.bin, 35,859 KB), but, I was receiving a byte size error (or something to this affect...don't remember the exact error). I then made a change, but, honestly I don't remember what I did. I didn't make a conf-reg change, but, now, I cannot modify anything, so, I'm not sure what mode I'm in or how to change it…

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