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Password Reset for 3Com 4200G switch

GlennCameron
GlennCameron used Ask the Experts™
on
Hi,

I just acquired a 3com 4200G switch, and am having problems logging into it. I'm using a console cable, and can see the switch boot up and prompt for usename and password. The default password (admin and "nothing") does not work, nor does admin admin.

A site here: http://www.urtech.ca/2011/12/solved-how-to-reset-the-password-on-a-3com-swictch-4200g-3848/ has instructions on resetting to default, but that does not succeed either.

Here are some other details of the switch that may be relevant:

4200G 12 Port BootROM, version 1.00
creation July 3 2006
CPU:      BCM5836
Speed:      200MHz
PN:      3CR17660-91

Thanks.
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Commented:
Try this:


1) Get access by console

2) Reboot the unit

3) Press Ctrl-B to enter Boot Menu

4) Enter your choice(0-9): 7

5) Are you sure you want to skip current configuration file when reboot? Yes or No [Y/N] y

6) Enter your choice(0-9): 0

Starting......

***********************************************************

* *

* Switch 4200G 12-Port BOOTROM, Version 2.00 *

* *

***********************************************************

Copyright (c) 2004-2007 3Com Corporation and its licensors.

Creation date : Nov 20 2007, 17:02:48

CPU Clock Speed : 200MHz

BUS Clock Speed : 33MHz

Memory Size : 64MB

Mac Address : 0016e01f7240

Press Ctrl-B to enter Boot Menu... 1

password: (NONE PASSWORD DEFAULT)

BOOT MENU

1. Download application file to flash

2. Select application file to boot

3. Display all files in flash

4. Delete file from flash

5. Modify bootrom password

6. Enter bootrom upgrade menu

7. Skip current configuration file

8. Set bootrom password recovery

9. Set switch startup mode

0. Reboot

Enter your choice(0-9): 7

The current setting will boot with current configuration file when rebooted.

Are you sure you want to skip current configuration file when reboot? Yes or No [Y/N] y

Setting......done!

BOOT MENU

1. Download application file to flash

2. Select application file to boot

3. Display all files in flash

4. Delete file from flash

5. Modify bootrom password

6. Enter bootrom upgrade menu

7. Skip current configuration file

8. Set bootrom password recoverys

9. Set switch startup mode

0. Reboot

Enter your choice(0-9): 0

Starting......

***********************************************************

* *

* Switch 4200G 12-Port BOOTROM, Version 2.00 *

* *

***********************************************************

Copyright (c) 2004-2007 3Com Corporation and its licensors.

Creation date : Nov 20 2007, 17:02:48

CPU Clock Speed : 200MHz

BUS Clock Speed : 33MHz

Memory Size : 64MB

Mac Address : 0016e01f7240

Press Ctrl-B to enter Boot Menu... 1 0

Auto-booting...

Decompress Image.......................................................................................................................................................................................................................................................................................................................................................................................OK!

Starting at 0x80100000...

Startup configuration is skipped.

User interface aux0 is available.

Press ENTER to get started.

<4200G>

%Apr 1 23:55:33:358 2000 4200G SHELL/5/LOGIN:- 1 - Console(aux0) in unit1 login

Author

Commented:
Thanks RKinsp, I'll try that tonight.

Just to clarify, is that "skip current configuration file" a permanent reset? Or does it have to be saved to the startup config somehow?

Next thing I wanted to do was upgrade the firmware. There were 2 files I found relating to this: Switch_4200G_s3t03.02.04_S56 and Switch_4200G_s3t03.02.04_S168 https://h10145.www1.hp.com/Downloads/SoftwareReleases.aspx?ProductNumber=JE015A&lang=en&cc=us&prodSeriesId=4236411 . Why are there 2 versions?

Looking at what is in the flash on the switch, it has a file finishing in S56, so I was planning on using that version for the upgrade.