Примечания к выпуску для Cisco Cisco 2000 Series Wireless LAN Controller
3
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 3.2.195.10
OL-12930-01
New and Changed Information
Upgrading to a New Software Release
When a controller is upgraded, the code on its associated access points is also automatically upgraded.
When an access point is loading code, each of its lights blinks in succession.
When an access point is loading code, each of its lights blinks in succession.
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. 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. The access points must remain powered, and the controller must not be reset during this time.
Cisco recommends the following sequence when performing an upgrade:
1.
Upload your controller configuration files to a server to back them up.
2.
Turn off the controller 802.11a and 802.11b networks.
3.
Upgrade your controller to the latest software release, following the instructions in the latest version
of the Cisco Wireless LAN Controller Configuration Guide. Click this link to browse to that
document:
of the Cisco Wireless LAN Controller Configuration Guide. Click this link to browse to that
document:
4.
Re-enable your 802.11a and 802.11b networks.
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.
New and Changed Information
Dynamic Frequency Selection Added to Access Points in -A Regulatory Domain
In controller software release 3.2.195.10, dynamic frequency selection (DFS) is enabled automatically
on the following Cisco lightweight access points that are configured for use in the -A regulatory domain
(U.S., Canada, and Philippines): AP1130, AP1230, and AP1240. DFS affects channels 52 to 64 of the
802.11a radio. The access points use DFS to detect radar signals such as military and weather sources
and then switch channels to avoid interfering with them.
on the following Cisco lightweight access points that are configured for use in the -A regulatory domain
(U.S., Canada, and Philippines): AP1130, AP1230, and AP1240. DFS affects channels 52 to 64 of the
802.11a radio. The access points use DFS to detect radar signals such as military and weather sources
and then switch channels to avoid interfering with them.