Cisco Cisco 2106 Wireless LAN Controller Release Notes
4
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.1.171.0
OL-12979-01
Software Release Information
Special Rules for Upgrading to Controller Software Release 4.1.171.0
Caution
Before upgrading your controller to software release 4.1.171.0, you must comply with the following
rules.
rules.
•
Controller software release 4.1.171.0 is greater 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 4.1.171.0
controller software and your TFTP server does not support files of this size, the following error
message appears: “TFTP failure while storing in flash.”
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 4.1.171.0
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 your controller is running software release 3.2.195.10 or a later 3.2 release or 4.0.206.0 or a later
4.0 release, you can upgrade your controller directly to software release 4.1.171.0 If your controller
is running an earlier 3.2 or 4.0 release, you must upgrade your controller to an intermediate release
prior to upgrading to 4.1.171.0.
4.0 release, you can upgrade your controller directly to software release 4.1.171.0 If your controller
is running an earlier 3.2 or 4.0 release, you must upgrade your controller to an intermediate release
prior to upgrading to 4.1.171.0.
shows the upgrade path that you must follow prior to
downloading software release 4.1.171.0.
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 4.1.171.0 software. In large networks, it may take some time to download the
software on each access point.
access points joined to the controller are upgraded to the intermediate release before you
install the 4.1.171.0 software. In large networks, it may take some time to download the
software on each access point.
•
Cisco recommends that you also install the Cisco Unified Wireless Network Controller Boot
Software 4.1.171.0 ER.aes file on the controller. This file resolves bootloader defects and is
necessary to ensure proper operation of the controller. The ER.aes file is required for the Cisco
WiSM, Catalyst 3750G Wireless LAN Controller Switch, and 4400 series controllers.
Software 4.1.171.0 ER.aes file on the controller. This file resolves bootloader defects and is
necessary to ensure proper operation of the controller. The ER.aes file is required for the Cisco
WiSM, Catalyst 3750G Wireless LAN Controller Switch, and 4400 series controllers.
Table 1
Upgrade Path to Controller Software Release 4.1.171.0
Current Software Release
Upgrade Path to 4.1.171.0 Software
3.2.78.0
Upgrade to 4.0.206.0 or a later 4.0 release before upgrading to
4.1.171.0.
4.1.171.0.
3.2.116.21
3.2.150.10
3.2.171.6
3.2.193.5
If your controller is configured with the new J3 country code,
upgrade to 3.2.195.10 or a later 3.2 release. If your controller is not
configured for the new J3 country code, you can upgrade to
3.2.195.10 or a later 3.2 release or to 4.0.206.0 or a later 4.0 release.
upgrade to 3.2.195.10 or a later 3.2 release. If your controller is not
configured for the new J3 country code, you can upgrade to
3.2.195.10 or a later 3.2 release or to 4.0.206.0 or a later 4.0 release.
3.2.195.10 or later 3.2 release
You can upgrade directly to 4.1.171.0.
4.0.155.5
Upgrade to 4.0.206.0 or a later 4.0 release before upgrading to
4.1.171.0.
4.1.171.0.
4.0.179.11
4.0.206.0 or later 4.0 release
You can upgrade directly to 4.1.171.0.