In normal operation, the router forwards broadcast I-Am messages received from the BACnet/IP side to the BACnet/MSTP side. For MS/TP devices with small memory, this may cause an issue if they receive a flood of I-Am messages. When the Block Broadcast I-Am feature is enabled, the router does not forward the broadcast I-Am messages to the MS/TP side.
The Block Full Range Who-Is Broadcast feature will block Who-Is requests which are targeted to the full range of BACnet device instances. This is typically used when doing a BACnet device discovery process. This feature can be used to hide MS/TP devices after they have been brought into a head-end. Who-Is requests for a specific device instance will still be passed to the MS/TP network.
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