Upgrade Catalyst 4500 Series switches

Pre-upgrade requirements:

Ensure that you meet these requirements before you attempt this configuration:

• Verify memory and boot ROM requirements. (show version, dir bootflash:)
• Download the valid software image.
• Back up the current switch configuration and software image.

Download the target switch software image

Download the convenient software for the switch to upgrade from the Cisco site.

Copy the image to bootflash: via TFTP or USB

via USB:

copy usb0:cat4500e-universalk9.SPA.03.11.04.E.152-7.E4.bin bootflash:cat4500e-universalk9.SPA.03.11.04.E.152-7.E4.bin

Configure Switch software Boot Variable

Configure the Switch Supervisor (SUP) to Load the new image on the next boot:

• Delete old bootvar to the old image version:

no boot system flash bootflash:cat4500e-universal.SPA.03.06.10.E.152-2.E10.bin

• Configure the new bootvar which will be loaded on the next switch boot up.

boot system flash bootflash:cat4500e-universalk9.SPA.03.11.04.E.152-7.E4.bin
exit

Save configuration and reload the switch

wr
reload

Note: In some cases, you need to delete the old image (not recommended) because the switch keep pointing to the initial image even when you point it to the target image:

delete bootflash:cat4500e-universal.SPA.03.06.10.E.152-2.E10.bin