Extreme Networks Summit WMScanner, User Manual

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Summit WMScanner Users Guide
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verify the location and channel settings of the APs within your infrastructure. To open coverage
visualization, choose the
Coverage option:
NOTE
Coverage grids are only displayed as shaded when in Flat Shaded, Edges On mode (View > Shade > Flat Shaded,
Edges On).
SNR Visualization
The SNR (signal-to-noise ratio) visualization mode allows you to view the best SNR from the MAC
addresses you have selected within the Visualization Panel filters. The SNR determined for each MAC
at a given point takes into account interference from other radios broadcasting on interfering channels,
including interference from non 802.11 sources. The best of the SNR values calculated at each grid point
is displayed at the grid point.
Signal-to-noise is often referred to as a measure of signal quality. The SNR visualization allows you to
view the signal quality available to a client at locations throughout the facility. Since the SNR view
shows the signal strength with respect to the background noise inherent to the environment and devices
operating in that environment, this visualization mode may help diagnose areas where good signal
quality is not available. Better signal quality is required for higher throughput and data intensive
applications such as VoIP (Voice over IP). To visualize SNR, choose the
SNR option:
You may wish to filter this view for a particular network or single MAC address. For example, if you
have two wireless networks in your facility, one broadcasting an SSID of
engineering and another
broadcasting an SSID of sales , you may wish to select only one SSID to visualize at a time from the