Users Guide

576 DHCP and USB Auto-Configuration

Easy Firmware Upgrade via USB

If a USB device is detected during bootup and there is an image on the USB

device (and no .setup files and no .text files), and the switch has no saved

startup config file, then the image version on the USB device is checked

against the active image version on the switch. If a newer

image version is

found on the USB device, the image is copied to the switch backup image and

the switch reloads using the new image.

Copy the startup-config file to the backup-config,; e.g.,

copy startup-

config backup-config

Delete the startup-config file; e.g.,

del startup-config

Put the new image on a cleanly formatted USB stick and insert the USB

stick into the stack master.

Reboot the stack master and skip the Easy Startup configuration wizard by

pressing N when prompted.

After the upgrade completes, copy the backup-config to the startup-config,

remove the USB stick, and reload the stack. The startup configuration is

migrated to the new syntax when loaded into the running-config. Check

the running-config, make any necessary adjustments and then save the

running-config into the startup-config.

1. If an older version of code is found on the USB and the boot auto-copy-sw allow-

downgrade option is selected (default setting), the switch will be downgraded.