37ECLYPSE APEX
Client to Hotspot Configuration
Laptop 1 is connected as a Wi-Fi client to an ECLYPSE Controller that has its wireless settings config-
ured as a Hotspot (Subnetwork 2). The ECLYPSE Connected VAV controllers that are part of the
wired network are configured, on their wireless side as a Wi-Fi Access Point (Subnetwork 1).
The remaining ECLYPSE Connected VAV controllers are configured as a Wi-Fi Client and are wire-
lessly connected to a VAV controllerâs Access Point.
With this configuration, laptop 1 is on the same subnet as the ECLYPSE Connected System Controller
(Subnetwork 2 created by the Hotspot), but all the Connected VAV Controllers are on a different Sub-
net (Subnetwork 1), so the laptop 1 user only has access to the Connected System Controller on its
same subnet. This is because BACnet/IP broadcast discovery messages such as âWho-Isâ do not
pass through network routers that separate subnetworks. In the example shown below, the Connected
System Controller acts as a router between the Wi-Fi hotspot clients and the wired network. This
means that BACnet/IP controllers on different subnetworks will not normally communicate with each
other. The laptop 2 user has access to both the Connected VAV controllers and the Connected Sys-
tem Controller. A solution is to use BBMD on both Laptop 1 (using EC-Net for example) and on the
Connected System Controller. See BACnet/IP Broadcast Management Device Service (BBMD).
Figureîˇ26: Client to Hotspot Configuration
Connecting IP Devices to an IP Network
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