Примечания к выпуску для Cisco Cisco 2000 Series Wireless LAN Controller
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Release Notes for Cisco Wireless LAN Controllers and Cisco Aironet Lightweight Access Points for Releases 3.2.78.4 and 3.2.78.0
OL-31336-01
Important Notes
Personnel installing the wireless LAN controllers and Cisco lightweight access points must understand
wireless techniques and grounding methods. The internal-antenna Cisco lightweight access points can
be installed by an experienced IT professional.
wireless techniques and grounding methods. The internal-antenna Cisco lightweight access points can
be installed by an experienced IT professional.
Important Notes
This section describes important information about the wireless LAN controllers and Cisco lightweight
access points.
access points.
Important Regulatory Notice
The wireless LAN controller must be installed by a network administrator or qualified IT professional
and the proper country code selected. Following installation, access to the wireless LAN controller
should be password protected by the installer to maintain compliance with regulatory requirements and
ensure proper unit functionality.
and the proper country code selected. Following installation, access to the wireless LAN controller
should be password protected by the installer to maintain compliance with regulatory requirements and
ensure proper unit functionality.
Cisco Wireless LAN Controllers Must Run Release 3.2.76.0 or Later to Support
-P and -K Regulatory Domains
-P and -K Regulatory Domains
To support Cisco lightweight access points configured for use in Japan and Korea, you must upgrade the
wireless LAN controller software to the 3.2.76.0 or later release. Earlier releases do not support Cisco
lightweight access points configured for use in Japan (regulatory domain -P) and Korea (regulatory
domain -K).
wireless LAN controller software to the 3.2.76.0 or later release. Earlier releases do not support Cisco
lightweight access points configured for use in Japan (regulatory domain -P) and Korea (regulatory
domain -K).
Voice WLAN Configuration
Cisco recommends that Load Balancing ALWAYS be turned off in any WLAN that is supporting voice,
regardless of vendor. When Load Balancing is turned on, voice clients can hear an audible artifact when
roaming and the handset is refused at its first reassociation attempt.
regardless of vendor. When Load Balancing is turned on, voice clients can hear an audible artifact when
roaming and the handset is refused at its first reassociation attempt.
Operating Mesh Networks Through Switches and Routers
In mesh networks that operate through low-speed switches and routers, Cisco lightweight access points
can disconnect from the wireless LAN controller, which causes the wireless LAN controller to generate
traps (CSCsb43906).
can disconnect from the wireless LAN controller, which causes the wireless LAN controller to generate
traps (CSCsb43906).
Heavily Loaded Cisco Wireless LAN Controllers CPU
When the wireless LAN controller CPU is heavily loaded (for example, when doing file copies or other
tasks), it does not have time to process all the ACKs that the NPU sends in response to configuration
messages. When this happens, the CPU generates error messages. The error messages do not impact
service or functionality (CSCsb48765).
tasks), it does not have time to process all the ACKs that the NPU sends in response to configuration
messages. When this happens, the CPU generates error messages. The error messages do not impact
service or functionality (CSCsb48765).