Device Placement on the Layout Model

Figure 96. AP SINR View: Outdoor Layout

7.2.7Sensor Coverage View

This view helps plan the placement of Sensors. It displays the zone of visibility for each Sensor. Sensors can cover 802.11a, 802.11b, 802.11g, 802.11a/n, and 802.11b/g/n protocols. Sensors are placed on the layout such that they can detect WLAN activity at each point on the layout and its perimeter and can prevent unauthorized activity.

Recommended: Plan Sensor placement such that each point on the layout and its perimeter is visible to two or three Sensors. You can do this using the Sensor Redundancy View.

There are two ranges for Sensors’ RF visibility: Detection and Prevention. You can view either the Prevention range, or the

Detection range, or both using the two checkboxes: Show Prevention and Show Detection provided at the bottom of the screen.

•Detection Range: Area from which Sensors can reliably detect any wireless activity. Detection is based on data rate (link speed) of protocols. Specify the data rate or use the Device Transmit Power (dBm) slider to control the data rate for which you want to see detection. Sensors can detect all the devices (with transmit power set greater than that in the slider bar) located within its detection range. For further specific results, select certain protocols and then specify the data rates for each.

Note: If you disable a protocol, the view will change accordingly and show prevention and detection only for the active protocols.

•Prevention Range: Area over which Sensors can reliably prevent any unauthorized wireless activity and block unwanted WLAN devices. You can also use the Prevention Reliability slider to control the prevention range. As the prevention reliability increases, the prevention range reduces.

¾Low Prevention Reliability indicates the optimistic estimates of the prevention range of Sensors. The actual prevention range is likely to be less than the predicted prevention range.

¾Medium Prevention Reliability indicates the most likely prevention range of Sensors. The actual prevention range is likely to be comparable with the predicted prevention range.

¾High Prevention Reliability indicates conservative estimates of the prevention range of Sensors. The actual prevention range is likely to be greater than the predicted prevention range.

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3Com ® AirProtect Planner User Guide