Skip to main content
Start a Conversation

Unsolved

This post is more than 5 years old

CaCa888

2 Posts

87808

May 10th, 2012 09:00

PowerConnect 3424

Gents

I have a PowerConnect 3424 with boot rom 1.0.0.13 with some working FW. I tried to upgrade it to 2.0.0.34 with boot code v 1.0.1.01. I followed all the instructions and "PowerConnect_34xx-20034.ros" wouldnt download either through GUI or through TFTP. But "PowerConnect_34XX_boot-10101.rfb" went through and I could downlod to the switch. Now there was accidental power outage.Now my swithc is continuously rebooting and I tried to get the startup menu through Xmodem but unsuccessful. The switch keeps rebooting and does not recogninse key strokes. I get booting screen though.I hit esc key within 2 sec I tried enter key also, to get in to startup menu screen but no luck. Is my swithc fried up? Any tips from you champion guys as to how to recover my switch??

DELL-Willy M

802 Posts

May 10th, 2012 10:00

If you had an accidental power outage during the boot code/firmware update process then the switch board could be damaged beyond repair.  

Are you able to get the switch stable enough to try and install PowerConnect_34XX_boot-10101.rfb thru Xmodem again?  If so that is where I would start.  

CaCa888

2 Posts

May 10th, 2012 14:00

Thanks for the response  Dell -Willy M. I get the start up menu screen on Xmodem.  How so I proceed from there? I am using putty.

DELL-Willy M

802 Posts

May 10th, 2012 16:00

  • Method used when TFTP is not possible
  • Much slower than TFTP
  • Users Xmodem protocol via Serial port
  • Set serial port to highest speed before transfer

 

Upgrading the firmware using the boot menu is a last resort option.  This method is used when the switch is unable to complete startup of the runtime code.  Using Xmodem is much slower than doing the upgrade via TFTP which is why TFTP is the preferred method when possible.

Before performing an upgrade via Xmodem, you’ll want to set the terminal baud rate to the highest speed possible which in most cases is 115200 bps.  If that choice is not available, then 57600 or 38400 might be the highest you can set the baud rate.

Information on upgrading the firmware via Xmodem can be found on the Upgrade via Boot Menu page in the Switch Administration and Management module.

 

  1.  On a local 34xx or 35xx series switch, connect to the serial console of the switch.
  2.  Use the show version command and note the firmware version currently running on the switch.
  3.  Download the firmware for the switch from support.dell.com to your classroom system.  Ensure this matches the version currently running on the switch as noted from the previous step.
  4. Unzip the .ros file to your Desktop.
  5. Establish a connection to the switch using HyperTerminal and then reboot it.
  6. As the switch is starting, press the key when prompted to bring up the boot menu.
  7. Press Ctrl + Shift + 6 at the boot menu, and then press 6 for the 34xx or 7 for the 35xx to open the Advanced Menu (If prompted for a password, use ryan for 35xx series switches). Choose the option to erase the flash sectors on the switch. This should remove all firmware from the switch.
  8. After the switch finishes erasing all the flash sectors, it will attempt to reboot. Unplug the switch and plug it back in.
  9. Activate the boot menu again, choose the option to set the Terminal Baud-Rate. Set the speed to 115200. Failure to do so will result in the XModem download taking hours to complete.Reconfigure HyperTerminal to connect at the new speed.

 

Note:

A quick way to change speeds in HyperTerminal is to save two different sessions that connect at either 9600 or 115200.  This will ensure a better experience when upgrading firmware via Xmodem.

 

    10.  Press Enter and then choose the option to Download Software from the boot menu.

    11.  Start an XModem session with HyperTerminal and transfer the file to the switch. This can be done by clicking Transfer à Send File, browse to the .ros image file on your Desktop and then double-click the file. Choose the Xmodem protocol in the drop-down list, and then click Send.

    12.  Once the download is complete, the switch will erase the flash, write the firmware to the switch, and then reboot. The baud rate of the serial port will change back to the default. You will need to change the speed again in the terminal application.

The User Guide has information starting on page 71.

http://support.dell.com/support/edocs/network/pc34xx/en/ug/pdf/CarrierUG_A01.pdf

Was this post helpful?

View All

No Events found!

Top