Cisco Cisco 2106 Wireless LAN Controller Release Notes
5
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 6.0.199.4
OL-31336-01
Software Release Information
Finding the Software Release
To find the software release running on your controller, click Monitor and look at the Software Version
field under Controller Summary on the controller GUI or enter show sysinfo on the controller CLI.
field under Controller Summary on the controller GUI or enter show sysinfo on the controller CLI.
Special Rules for Upgrading to Controller Software Release 6.0.199.4
Caution
Before upgrading your controller to software release 6.0.199.4, you must comply with the following
rules.
rules.
•
Before you download a software image or an ER.aes file to a 2100 series controller or a controller
network module, use the show memory statistics CLI command to see the current amount of free
memory. If the controller has less than 90 MB of free memory, you need to reboot it before
downloading the file.
network module, use the show memory statistics CLI command to see the current amount of free
memory. If the controller has less than 90 MB of free memory, you need to reboot it before
downloading the file.
•
Before you use an AP801 series lightweight access point with controller software release 6.0.199.4,
you must upgrade the software in the Cisco 860 and 880 Series Integrated Services Routers (ISRs)
to Cisco IOS 12.4(22)T and the software in the Cisco 890 Series Integrated Services Router to Cisco
IOS 12.4(22)YB.
you must upgrade the software in the Cisco 860 and 880 Series Integrated Services Routers (ISRs)
to Cisco IOS 12.4(22)T and the software in the Cisco 890 Series Integrated Services Router to Cisco
IOS 12.4(22)YB.
•
Make sure you have a TFTP or FTP server available for the software upgrade. Keep these guidelines
in mind when setting up a TFTP or FTP server:
in mind when setting up a TFTP or FTP server:
–
Controller software release 6.0.199.4 is larger than 32 MB; therefore, you must make sure that
your TFTP server supports files that are larger than 32 MB. Some TFTP servers that support
files of this size are tftpd and the TFTP server within the WCS. If you attempt to download the
6.0.199.4 controller software and your TFTP server does not support files of this size, the
following error message appears: “TFTP failure while storing in flash.”
your TFTP server supports files that are larger than 32 MB. Some TFTP servers that support
files of this size are tftpd and the TFTP server within the WCS. If you attempt to download the
6.0.199.4 controller software and your TFTP server does not support files of this size, the
following error message appears: “TFTP failure while storing in flash.”
–
If you are upgrading through the service port, the TFTP or FTP server must be on the same
subnet as the service port because the service port is not routable, or you must create static
routes on the controller.
subnet as the service port because the service port is not routable, or you must create static
routes on the controller.
–
If you are upgrading through the distribution system network port, the TFTP or FTP server can
be on the same or a different subnet because the distribution system port is routable.
be on the same or a different subnet because the distribution system port is routable.
–
A third-party TFTP or FTP server cannot run on the same computer as WCS because the WCS
built-in TFTP or FTP server and the third-party TFTP or FTP server require the same
communication port.
built-in TFTP or FTP server and the third-party TFTP or FTP server require the same
communication port.
•
You can upgrade or downgrade the controller software only between certain releases. In some
instances, you must first install an intermediate release prior to upgrading to software release
6.0.199.4.
instances, you must first install an intermediate release prior to upgrading to software release
6.0.199.4.
6.0.199.4.
Table 1
Upgrade Path to Controller Software Release 6.0.199.4
Current Software Release
Upgrade Path to 6.0.199.4 Software
3.2.78.0 or later 3.2 release
Upgrade to 4.0.206.0 or later 4.0 release, then upgrade to 4.2.176.0,
before upgrading to 6.0.199.4.
before upgrading to 6.0.199.4.
4.0.155.5 or later 4.0 release
Upgrade to 4.2.176.0 before upgrading to 6.0.199.4.
4.1.171.0 or later 4.1 release
Upgrade to 4.2.176.0 before upgrading to 6.0.199.4.