Dell PowerConnect W-AirWave 7.6 User Manual download pdf (Page 300)

288 | Using VisualRF Dell PowerConnect W-AirWave 7.6 | User Guide

Figure 215: Deployed switch showing red and green port status icons

Fine-Tuning Location Service in VisualRF > Setup

There are several options on the VisualRF > Setup page which increase client location accuracy. All of these items

will increase the processing requirements for the location service and could negatively impact the overall performance

of AirWave.

l Grid Size - decreasing the grid size will enable the location to place clients in a small grid which will increase

accuracy. You can right-click on a floor plan within a building view and change this setting.

l Dynamic Attenuation - enabling dynamic attenuation (which is on by default) instructs the location service to

sample the current RF environment and to dynamically adjust Path Loss.

Configuring Infrastructure

Ensure that the hardware is configured to retrieve the RF information and that it provides this information on a

timely basis. There are three unique timing mechanisms which impact location accuracy: how often the

infrastructure collects and correlates RF statistics in their MIB, how often the AirWave queries those MIB entries,

and how often VisualRF service queries AirWave for this RF information.

Figure 216: Timing Factors Impacting Location Accuracy

These best practices are recommended when configuring hardware infrastructure:

l For legacy autonomous APs, ensure on the Group > Radio page that Rogue Scanning is enabled and the interval

is accurate, as shown in Figure 217:

Figure 217: Group Rogue Scanning Configuration

l For thin APs, ensure that the controllers are configured to gather RF information from the thin APs frequently.

l For Cisco LWAPP, navigate to Groups > Cisco WLC Config page in AirWave. Navigate the tree control to the

Wireless section, and for each PHY navigate to RRM > General section.

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Dell PowerConnect W-AirWave 7.6 User Manual Page 300