Monday, October 15, 2012

Catalyst 3750 Series Switches in the stack do not boot with the new image after a software upgrade.

I faced with this issue after upgrading IOSs on my 3750 series switches stack. Stack consists of 4 catalyst 3750 series. After I have copied anf setting new IOS file as a boot file on has failed to boot and I got "Switch is not usable" error.

My solution.

  • I have removed stack cables from the switch that has failed to boot
  • I have set the new IOS with boot sytem .... command.
  • I ensured that the switch booted up with new IOS
  • I have powered off the switch.
  • I have connected stack cables and power on the switch.

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