Installation guide

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Wi-Fi Location-Based Services—Design and Deployment Considerations
OL-11612-01
Cisco Location-Based Services Architecture
Figure 15 WCS WLAN Client Location History
In many cases, it is desirable to graphically display the location history of a client device in sequential
steps to better visualize and trace the movement of the client throughout the environment over time. This
can be very useful, for example, in security and monitoring applications. Cisco WCS and the location
appliance make it possible to view each location history record in this fashion, played back with a
configurable time delay. The granularity of the “movement” shown depends on the interval with which
client history records are recorded in the database.
To see location history played back in this fashion, simply click on the Play button shown in Figure 15
and past location history should start being displayed both in tabular form and graphically. Large
amounts of location history data may be more readily viewed by reducing the “Change Selection Every”
interval shown in Figure 15 from 2 seconds to 1 second.
802.11 Active RFID Tags (L2 Multicast)
The Cisco LBS solution readily detects Layer 2 multicasting asset tags (such as the AeroScout T2) and
displays them on WCS floor maps using a yellow tag icon, as shown in Figure 16. These types of 802.11
active RFID asset tags do not associate to the WLAN infrastructure (see AeroScout Asset Tags (Type 2),
page 99). Note that PanGo Locator LAN tags and other types of 802.11 active RFID asset tags that
associate to the wireless infrastructure as full WLAN clients are represented on WCS location floor maps
as blue rectangles (for WLAN clients, see WLAN Clients, page 25) and not yellow tags.