This tutorial will walk you thru the simple steps of upgrading the software on the Cisco Wireless Controller 5508 from version 8.0.121.0 to 8.0.140.0.
First, you will need to do is to download the Wireless IOS version 8.0.140.0 from the Cisco support site to your TFTP server. if you don’t have a TFTP server then there are many free ones out there that you can download
Few things to check before the upgrade
- Check the version of the Wireless Controller
- Check the version of all the access points
You can run the command below to check version of all the access points from the command line
“show ap image all”
Login to the WLC web interface and go to the commands tab click on Download
below is the screenshot that shows the variables that all need to in there click on download
- Mode of Transfer
- Path to be specified
- IOS code file name
Click on download the start the process for the upgrade and click “OK” to accept the message
First message that shows the code transfer process by stating “TFTP Code transfer starting”
You can also check the progress of the upgrade by looking at your TFTP server progress bar
- shows the network interface IP that is used by the TFTP server
- Progress bar for the upgrade process
You can watch the progress on each step and the browser updates automatically
Below is the screenshot that shows that the IOS is now being saved to flash
Now it is pushing the AP image files to flash for the all AP types
The below screen shows that the upgrade is now complete and also states that you can pre-download the image to all the access points to save downtime – this is not a needed step and access points will download the code on their own when the controller reboots, but is recommended to do it ahead of time
You can check the version of all the access points by running the “show ap image all ” like in the below screen shot you can see the primary image and pre-downloaded image on the top two access points
You can kick off the upgrade on all the access points by running the following command in the Command line tool
“config ap image predownload primary all”
This completes the tutorial on upgrading the Wireless controller from 8.0.121.0 to 8.0.140.0
I hope this was useful
