Cisco Cisco 2106 Wireless LAN Controller

Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 6.0.196.0

OL-31336-01

Software Release Information

•

Before you use an AP801 series lightweight access point with controller software release 6.0.196.0,
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:

–

Controller software release 6.0.196.0 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
6.0.196.0 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.

–

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.

–

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.

•

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
6.0.196.0.

Table 1

shows the upgrade path that you must follow before downloading software release

6.0.196.0.

Note

When you upgrade the controller to an intermediate software release, wait until all of the access
points joined to the controller are upgraded to the intermediate release before you install the
6.0.196.0 software. In large networks, it can take some time to download the software on each
access point.

Table 1

Upgrade Path to Controller Software Release 6.0.196.0

Current Software Release

Upgrade Path to 6.0.196.0 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 6.0.196.0.

4.0.155.5 or later 4.0 release

Upgrade to 4.2.176.0 before upgrading to 6.0.196.0.

4.1.171.0 or later 4.1 release

Upgrade to 4.2.176.0 before upgrading to 6.0.196.0.

4.1.191.xM

Upgrade to 4.1.192.35M and then to 6.0.182.0 before upgrading to
6.0.196.0.

4.1.192.xM