Cisco Cisco 2106 Wireless LAN Controller
4
Release Notes for Cisco Wireless LAN Controllers and Mesh Access Points for Release 4.0.217.204
OL-31336-01
Software Release Information
Note
Controllers can be upgraded from one release to another. However, should you require a downgrade from
one release to another, you may be unable to use the higher release configuration. The workaround is to
reload the previous controller configuration files saved on the backup server or to reconfigure the
controller.
one release to another, you may be unable to use the higher release configuration. The workaround is to
reload the previous controller configuration files saved on the backup server or to reconfigure the
controller.
Upgrade Path to Release 4.0.217.204
Details for upgrading your network to release 4.0.217.204 from earlier releases of 3.1, 3.2 and 4.0 are
described below
described below
:
•
If your controller is installed with release 4.0.xx or 3.2.xx, you can upgrade directly to release
4.0.217.204.
4.0.217.204.
•
If your controller is installed with release 3.1.x, you must upgrade with one intermediate release
prior to installing release 4.0.217.204.
prior to installing release 4.0.217.204.
–
First, upgrade to 3.2.195.10
–
Secondly, upgrade to 4.0.217.204.
Note
•
If you are operating with indoor and outdoor access points in your network in Europe, Singapore
and other countries requiring Dynamic Frequency Selection (DFS) functionality, you should install
release 4.0.217.204.
and other countries requiring Dynamic Frequency Selection (DFS) functionality, you should install
release 4.0.217.204.
•
For the US and other countries that do not require DFS functionality:
–
Install 4.1.190.5 for outdoor mesh networks operating with Cisco Aironet 1500 (1505 and 1510)
and 1520 series access points (1522).
and 1520 series access points (1522).
–
If you are operating with indoor and outdoor access points (1505, 1510, and 1522), you will
need to place all mesh traffic on a controller running release 4.1.190.5 and all indoor access
points on a controller running release 4.1.185.0 or earlier 4.1.x version. Refer to the release
notes for 4.1.190.5 and 4.1.185.0 at the following link for details on these releases:
need to place all mesh traffic on a controller running release 4.1.190.5 and all indoor access
points on a controller running release 4.1.185.0 or earlier 4.1.x version. Refer to the release
notes for 4.1.190.5 and 4.1.185.0 at the following link for details on these releases:
–
If you are operating with indoor and outdoor access points excluding 1522, you can operate with
either release 4.1.185.0 or 4.1.190.5. (In the case of release 4.1.190.5, you must maintain
separate controllers for indoor and outdoor access points as noted above.)
either release 4.1.185.0 or 4.1.190.5. (In the case of release 4.1.190.5, you must maintain
separate controllers for indoor and outdoor access points as noted above.)
–
If you are operating with indoor access points only, you should install the latest non-mesh
controller release such as 4.1.185.0.
controller release such as 4.1.185.0.