Updating Controller Software - Cisco SD2008T-NA Configuration Manual

Chapter 8 Managing Controller Software and Configurations
Controllers can be upgraded from one release to another. However, should you require a downgrade from
Note
one release to another, you may be unable to use the higher release configuration. The workaround is to
reload the previous controller configuration files saved on the backup server or to reconfigure the
controller.

Updating Controller Software

Follow these steps to upgrade the controller software using the CLI.
Note
Make sure you have a TFTP server available for the Operating System software download. Keep these
Step 1
guidelines in mind when setting up a TFTP server:
•
•
•
Download the desired Operating System software update file from the Cisco website to the default
Step 2
directory on your TFTP server.
Log into the controller CLI.
Step 3
Enter ping server-ip-address to verify that the controller can contact the TFTP server.
Step 4
Enter transfer download start and answer n to the prompt to view the current download settings. This
Step 5
example shows the command output:
>transfer download start
Mode........................................... TFTP
Data Type...................................... Code
TFTP Server IP................................. xxx.xxx.xxx.xxx
TFTP Path...................................... <directory path>
TFTP Filename.................................. AS_2000_3_0_x_x.aes --OR--
Are you sure you want to start? (y/n) n
Transfer Canceled
>
Enter these commands to change the download settings:
Step 6
transfer download mode tftp
transfer download datatype code
transfer download serverip tftp-server-ip-address
transfer download filename filename
OL-9141-03
You can also update the controller software using the GUI or through a wireless connection.
However, in these cases, you will lose your connection to the controller sometime during the
update process. For this reason, Cisco recommends that you use a direct CLI console port
connection to update controller software.
If you are downloading through the service port, the TFTP server must be on the same subnet as the
service port because the service port is not routable.
If you are downloading through the distribution system network port, the TFTP server can be on the
same or a different subnet because the distribution system port is routable.
A third-party TFTP server cannot run on the same computer as the Cisco WCS because the WCS
built-in TFTP server and the third-party TFTP server require the same communication port.
Upgrading Controller Software
AS_4100_3_0_x_x.aes --OR--
AS_4400_3_0_x_x.aes
Cisco Wireless LAN Controller Configuration Guide
8-3