Dell PowerConnect W-Airwave User Manual page 266

Table 145 Server Settings Section of the VisualRF > Setup Page (Continued)
Setting
Use Metric Units
Memory Allocation
Core Threads
Location Caching
Threads
UI Threads
Synchronization Timer
Restrict visibility of
empty floor plans to the
role of the user who
created them
To tune location accuracy, go to the Location Settings section on this page as described in
Table 146 Location Settings Section in VisualRF > Setup
Setting
Allowed deviation
for client placement
Maximum Rogue
APs per Floor Plan
266 | Using VisualRF
Default Description
No Instructs the VisualRF engine to display all units of measurements in metric
512 MB The amount of memory dedicate to VisualRF. It is not dynamically allocated and all the
memory is consumed upon starting the service. Be sure to check the memory and
swap utilization in the Systems > Performance page before making any changes. The
exact amount of memory used per floor plan will vary heavily based on the size, number
of devices and number of grid cells on the floor plan.
25 floors or less 512 MB

50 to 75 floors 1 GB

75 to 100 floors 1.5 GB

100 to 200 floors 3GB

200 to 300 floors 5 GB (64-bit only)

Above 300 8 GB (64-bit only)

NOTE: If you see Out of Memory errors in the SSL error log on the System > Status
page, you should increase memory allocation.
1x number Number of threads that calculate path loss for each floor. These threads also
of cores regenerate a floor's RF properties when new APs, walls, or regions are added to a floor
plan.
1x number Number of threads that calculate the location of all clients associated with access
of cores points on this floor plan.
1x number Number of threads that service the users accessing QuickView, as well as AMP-to-
of cores VisualRF communication.
NOTE: If users experience timeout errors while using QuickView, allocate additional UI
Threads.
15 minutes This timer indicates how often VisualRF will synchronize security for APs within AMP.
No When enabled, only the creator can view an empty floor plan.
Default Description
4 dB When VisualRF locates a client or rogue it utilizes signal metrics from all the APs that hear
the client or rogue device. VisualRF builds a fingerprint location for all clients with similar
transmit-power capability. All subsequent clients that fall within the deviation is placed on
the same location fingerprint or x, y coordinates.
Example: AP #1 hears client1 at -72, and AP #2 hears client 1 at -64. VisualRF calculates the
client's location to be at coordinates 100, 200. Client2 is heard by AP#1 at -71 and AP#2 at -
65.
VisualRF will use the average of the difference in signals (AP#1 -72 and -71) to see if the
client matches a pre-calculated location fingerprint. 1 + 1 (differences in signals) / 2 (# of
APs) = 1 which falls within the deviation of 2, hence the client would be located at 100,200.
20 Sets the maximum number of rogues AMP will place on a Floor. Use this filter in
combination with the RAPIDS Export Threshold configured on the RAPIDS > Setup page to
intelligently control the number of rogue devices displayed per floor.
NOTE: Increasing this value could increase the load on the server and the clutter on the
screen.
Table 146:
Dell PowerConnect W-AirWave | Version 7.3