Примечания к выпуску для Cisco Cisco 2106 Wireless LAN Controller
6
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.2.61.0
OL-31336-01
Software Release Information
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 4.2.61.0 software. In large networks, it can 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 4.2.61.0 software. In large networks, it can take some time to download the
software on each access point.
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Cisco recommends that you also install the Cisco Unified Wireless Network Controller Boot
Software 4.2.61.0 ER.aes file on the controller. This file resolves bootloader defect CSCsh61233
and is necessary to ensure proper operation of the controller. The ER.aes file is required for all
controller platforms. If you do not install this ER.aes file, your controller does not obtain the fix for
this defect, and “Error” appears in the Bootloader Version field in the output of the show sysinfo
command.
Software 4.2.61.0 ER.aes file on the controller. This file resolves bootloader defect CSCsh61233
and is necessary to ensure proper operation of the controller. The ER.aes file is required for all
controller platforms. If you do not install this ER.aes file, your controller does not obtain the fix for
this defect, and “Error” appears in the Bootloader Version field in the output of the show sysinfo
command.
Note
The bootloader is not upgradable on the 2106 controller.
Note
The ER.aes files are independent from the controller software files. You can run any
controller software file with any ER.aes file. However, installing the latest boot software file
(4.2.61.0 ER.aes) ensures that the bootloader modifications in all of the previous and current
boot software ER.aes files are installed.
controller software file with any ER.aes file. However, installing the latest boot software file
(4.2.61.0 ER.aes) ensures that the bootloader modifications in all of the previous and current
boot software ER.aes files are installed.
Caution
If you require a downgrade from one release to another, you may lose the configuration from your
current release. The workaround is to reload the previous controller configuration files saved on the
backup server or to reconfigure the controller.
current release. The workaround is to reload the previous controller configuration files saved on the
backup server or to reconfigure the controller.
Follow these steps to upgrade the controller software using the controller GUI.
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. Otherwise, you must manually reconfigure the controller.
upgrading the controller software. Otherwise, you must manually reconfigure the controller.
Table 1
Upgrade Path to Controller Software Release 4.2.61.0
Current Software Release
Upgrade Path to 4.2.61.0 Software
3.2.78.0 or later 3.2 release
Upgrade to 4.0.206.0 (or a later 4.0 release) before upgrading to
4.2.61.0.
4.2.61.0.
4.0.155.5
Upgrade to 4.0.206.0 (or a later 4.0 release) before upgrading to
4.2.61.0.
4.2.61.0.
4.0.179.11
4.0.206.0 or later 4.0 release
You can upgrade directly to 4.2.61.0.
4.1.171.0 or later 4.1 release
You can upgrade directly to 4.2.61.0.