Cisco Cisco 2106 Wireless LAN Controller
4
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 4.1.181.0
OL-31336-01
Software Release Information
Caution
Do not power down the controller or any access point during this process; otherwise, you might corrupt
the software image. Upgrading a controller with a large number of access points can take as long as 30
minutes, depending on the size of your network. However, with the increased number of concurrent
access point upgrades supported in software release 4.0.206.0 and later, the upgrade time should be
significantly reduced. The access points must remain powered, and the controller must not be reset
during this time.
the software image. Upgrading a controller with a large number of access points can take as long as 30
minutes, depending on the size of your network. However, with the increased number of concurrent
access point upgrades supported in software release 4.0.206.0 and later, the upgrade time should be
significantly reduced. The access points must remain powered, and the controller must not be reset
during this time.
Special Rules for Upgrading to Controller Software Release 4.1.181.0
Caution
Before upgrading your controller to software release 4.1.181.0, you must comply with the following
rules.
rules.
•
Controller software release 4.1.181.0 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 tftpd32 and the TFTP server within the WCS. If you attempt to download the 4.1.181.0
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 tftpd32 and the TFTP server within the WCS. If you attempt to download the 4.1.181.0
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 4.1.181.0. 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 4.1.181.0.
later 4.0 release), you can upgrade your controller directly to software release 4.1.181.0. 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 4.1.181.0.
shows the upgrade path that you must
follow before downloading software release 4.1.181.0.
Table 1
Upgrade Path to Controller Software Release 4.1.181.0
Current Software Release
Upgrade Path to 4.1.181.0 Software
3.2.78.0
Upgrade to 4.0.206.0 (or a later 4.0 release) before upgrading to
4.1.181.0.
4.1.181.0.
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 4.1.181.0.
4.0.155.5
Upgrade to 4.0.206.0 (or a later 4.0 release) before upgrading to
4.1.181.0.
4.1.181.0.
4.0.179.11
4.0.206.0 or later 4.0 release
You can upgrade directly to 4.1.181.0.
4.1.171.0
You can upgrade directly to 4.1.181.0.