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Figure 2. CiscoWorks WLSE Express: RF Coverage
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Interference detection—CiscoWorks WLSE Express catalogs the physical location of all managed access points and creates a site map of the
WLAN installation. This allows the wireless-aware network to detect points of interfering RF energy that affect network performance. The
source of this energy could be a rogue access point or a device that operates in the same frequency range, such as a cordless telephone or
leaky microwave oven. Interference detection and location is critical to maintaining a reliable WLAN. Administrators can define thresholds to
generate fault notifications when detected interference levels are exceeded.
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Self-healing WLANs—CiscoWorks WLSE Express can detect and compensate for an access point that has failed by automatically increasing
the power and cell coverage of surrounding access points. The self-healing process provides contiguous coverage to maximize the available
coverage of the WLAN and minimize client impact.
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Automated resite surveys—CiscoWorks WLSE Express automatically reassesses radio throughput and performance to provide notification if
performance falls below administrator-defined thresholds. New optimal settings can be found by running the site survey wizard, then applied
to the network.
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Support for 802.11h/Dynamic Frequency Selection—Cisco Aironet 802.11a access points change the frequency when they detect radar
transmission on the same channel to not interfere with the radar frequency. CiscoWorks WLSE Express will be notified of this and update its
RF data model and Location Manager GUI coverage display to reflect the change.
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Warm standby redundancy—CiscoWorks WLSE Express supports redundancy through a primary and backup mechanism. If the primary
fails, the backup automatically takes over. Data such as performance data, fault messages, and radio scans between the primary and backup is
synchronized on a user-defined interval to minimize the loss of collected data when a backup takes over. A notification is generated during
the switchover.
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