BACnet IoT Gateway Start-up Guide
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With NAT Routing, BBMD alone does not work because the Device
s cannot reach each other’s IP
Addresses even if they know them. The only reachable address is the BBMD itself, so this must also act as
a BACnet IoT Gateway to forward traffic to the intended device. When this is don
e, the destination device’s
IP Address and Port are encoded as the DADR in the network header, so that the Router can forward
messages to the correct device.
Figure 63: BBMD Scenario 2
– NAT Routing
