Примечания к выпуску для Cisco Cisco 2000 Series Wireless LAN Controller
R E V I E W D R A F T — C I S C O C O N F I D E N T I A L
3
Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 3.2.193.5
OL-xxxxx-xx
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
Migrating Access Points from the -J Regulatory Domain to the -U Regulatory
Domain
Domain
The Japanese government has changed its 5-GHz radio spectrum regulations. These regulations allow a
field upgrade of 802.11a 5-GHz radios. Japan allows three frequency sets:
field upgrade of 802.11a 5-GHz radios. Japan allows three frequency sets:
•
J52 = 34 (5170 MHz), 38 (5190 MHz), 42 (5210 MHz), 46 (5230 MHz)
•
W52 = 36 (5180 MHz), 40 (5200 MHz), 44 (5220 MHz), 48 (5240 MHz)
•
W53 = 52 (5260 MHz), 56 (5280 MHz), 60 (5300 MHz), 64 (5320 MHz)