
8-4
Cisco Wireless LAN Controller Configuration Guide
OL-13826-01
Chapter 8 Managing Controller Software and Configurations
Upgrading Controller Software
Using the GUI to Upgrade Controller Software
Follow these steps to upgrade the controller software using the GUI.
Step 1 Upload your controller configuration files to a server to back them up.
Note Cisco highly recommends that you back up your controller’s configuration files prior to
upgrading the controller software. Otherwise, you must manually reconfigure the controller.
Step 2 Disable the controller 802.11a and 802.11b/g networks.
Step 3 Disable any WLANs on the controller.
Step 4 Follow these steps to obtain the 4.2 controller software and the Cisco Unified Wireless Network
Controller Boot Software 4.2 ER.aes file from the Software Center on Cisco.com:
a. Click this URL to go to the Software Center:
http://www.cisco.com/cisco/web/download/index.html
b. Click Wireless Software.
c. Click Wireless LAN Controllers.
d. Click Standalone Controllers, Wireless Integrated Routers, or Wireless Integrated Switches.
e. Click the name of a controller.
f. Click Wireless LAN Controller Software.
g. Click a controller software release.
h. Click the filename (filename.aes).
i. Click Download.
j. Read Cisco’s End User Software License Agreement and then click Agree.
k. Save the file to your hard drive.
l. Repeat steps a. to k. to download the remaining file (either the 4.2 controller software or the Cisco
Unified Wireless Network Controller Boot Software 4.2 ER.aes file).
Step 5 Copy the controller software file (filename.aes) and the Cisco Unified Wireless Network Controller Boot
Software 4.2 ER.aes file to the default directory on your TFTP server.
Step 6 Click Commands > Download File to open the Download File to Controller page (see Figure 8-1).
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