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Cisco Wireless LAN Controller Configuration Guide
OL-17037-01
Chapter 9 Managing Controller Software and Configurations
Upgrading Controller Software
Step 18 Click OK to confirm your decision to reboot the controller.
Step 19 After the controller reboots, repeat Step 7 to Step 18 to install the remaining file (either the 5.2 controller
software or the Cisco Unified Wireless Network Controller Boot Software 5.2.157.0 ER.aes file).
Step 20 Re-enable the WLANs.
Step 21 For Cisco WiSMs, re-enable the controller port channel on the Catalyst switch.
Step 22 Re-enable your 802.11a and 802.11b/g networks.
Step 23 If desired, reload your latest configuration file to the controller.
Step 24 To verify that the 5.2 controller software is installed on your controller, click Monitor on the controller
GUI and look at the Software Version field under Controller Summary.
Step 25 To verify that the Cisco Unified Wireless Network Controller Boot Software 5.2.157.0 ER.aes file is
installed on your controller, enter the show sysinfo command on the controller CLI and look at the Field
Recovery Image Version field.
Note If you do not install the 5.2.157.0 ER.aes file, the Field Recovery Image Version field shows
“N/A.”
Using the CLI to Upgrade Controller Software
Follow these steps to upgrade the controller software using the CLI.
Note Do not install the 5.2 controller software file and the 5.2.157.0 ER.aes boot software file at the same
time. Install one file and reboot the controller; then install the other file and reboot the controller.
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. See the “Uploading and Downloading Configuration Files”
section on page 9-21 for instructions.
Step 2 Follow these steps to obtain the 5.2 controller software and the Cisco Unified Wireless Network
Controller Boot Software 5.2.157.0 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.
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