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Chapter 5 Firmware Update Procedure
The application firmware is field-updateable. The update procedure and the required equipment are
described in this chapter.
Note: Once the system is up, it is controlled by an executing application image residing in the flash memory.
No firmware update is possible during this mode. The update can only be done when the system is
resetting. To initiate this sequence, the user must set the boot mode configuration parameter to Boot from
Net during normal operation, and then perform a reset. When the Boot from NET option is set, Bootstrap can
start the system with an image residing on a TFTP server on the network. Be sure that the TFTP server
residing on the network is accessible by the switch.
Note: It is highly recommended, though not necessary, to use a RS232 serial port connection to the switch
during the firmware updating procedure. When using a telnet Session or web interface alone, your
connection to the switch will not be available until the switch has entered forwarding mode. This takes
approximately three minutes. Once completed, the software version should be verified in the Firmware
Update page. If the older version of the software has not been replaced, the unit was unable to reach the
new software and booted from the old “flash” version.
The upgrade procedure is as follows:
1. Go to System Manager/Firmware Update (in the Web or Console Interface).
2. Set Boot from Net option during the normal operation.
3. Verify information such as the IP address for the TFTP Server, Gateway IP address, and the file
name and its path of the new image, and then press the Submit button, in the Web, or Ctrl+W, in
the console interface.
4. Restart the system with Boot from Net set.
5. Bootstrap will retrieve the new image then pass control to it.
6. The system executes the new image.
Note: The previous image in the flash will not be replaced by the new image using this option.
The image in the flash will be over-written if Boot from Net and Save option is selected.
7. If you decide to upgrade to the new image, go to Firmware Update again. Set Boot from Net and
Save option, and press the Submit button, in the Web, or Ctrl+W, in the console interface.
8. Restart the system with Boot from Net and Save set.
9. The new image should over-write the old image in the Flash memory. Verify it by going to the
Firmware Update screen and checking the Software Release information.