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Product Bulletin No. 3050
Cisco Unified Wireless Network Software Release 3.1
Cisco Systems
®
announces the availability of Cisco Unified Wireless Network Software Release 3.1. This release contains
new features, as well as support for the features delivered in Cisco Unified Wireless Network Software Release 3.0. This
software release provides support for the following new features: 802.11h support, enhanced support for the Cisco Wireless
IP Phone 7920, enhanced integration with Cisco Secure Access Control Server (ACS), Network Admission Control (NAC)
support, location services enhancements, regulatory domain updates, Lightweight Access Point Protocol (LWAPP) support
for the Cisco Aironet 1130AG, 1200, 1230AG and 1240AG Series access points, and support for the Cisco Aironet 1500 Series
lightweight outdoor mesh access point.
NEW FEATURES
The following new features are included in Cisco Unified Wireless Network Software Release 3.1. These features are supported by Cisco Aironet
®
lightweight access points, Cisco wireless LAN controllers, Cisco 2700 Series Wireless Location Appliances, and Cisco Wireless Control System
(WCS).
802.11h Support
The International Telecommunication Union (ITU) Recommendation M1652 defines the mechanisms that allow WLANs to share the 5-GHz
spectrum with primary-use devices such as military radar systems. These mechanisms are dynamic frequency selection (DFS) and transmit power
control (TPC). DFS detects other devices using the same radio channel, and switches WLAN operation to another channel if necessary. DFS is
responsible for avoiding interference with other devices, such as radar systems and other WLAN segments, and for uniform utilization of channels.
TPC is intended to reduce interference from WLANs to satellite services by reducing the radio transmit power that WLAN devices use. TPC also
can be used to manage the power consumption of wireless devices and the range between access points and wireless devices. These requirements
have been adopted by the US, Europe and many other countries worldwide and have become part of national regulations, e.g. the U-NII
Report&Order in the US.
Benefits of support and compliance with M1652 include:
•
Widespread deployment of 802.11a wireless networks
•
DFS and TPC can be used to improve the management, deployment, and operation of WLANs
Wireless LAN Controllers Supported: Cisco 2000, 4100, and 4400 Series
Access Points Supported: Cisco Aironet 1000, 1130AG, 1200, 1230AG and 1240AG Series lightweight access points; not supported on bridge
links provided on Cisco Aironet 1030 Series lightweight access points or Cisco Aironet 1500 Series lightweight outdoor mesh access point.