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11.3.4
BBMD
11.3.4.1
Overview
The gateway supports BBMD (BACnet/IP broadcast management device)
functionality on its Ethernet port for BACnet/IP. Some notes of interest are:
•
Supports up to 32 BDT entries.
•
Supports up to 32 FDT entries
•
Does not register as a foreign device
11.3.4.2
Supported BBMD Services
This section details the BBMD services that are supported:
Write Broadcast Distribution Table
The gateway processes Write Broadcast Distribution Table messages to initialize
or update its BDT.
Read Broadcast Distribution Table
The gateway responds to Read Broadcast Distribution Table messages with a
Read Broadcast Distribution Table Ack message that contains the current
contents of the BDT.
Forwarded NPDU
The gateway processes incoming and outgoing Forwarded NPDU messages.
Register Foreign Device
The gateway responds to Register Foreign Device messages with a Register
Foreign Device Ack message and updates the FDT.
Read Foreign Device Table
The gateway responds to Read Foreign Device Table messages with a Read
Foreign Device Table Ack message that contains the current contents of the
FDT.
Delete Foreign Device Table Entry
The gateway processes Delete Foreign Device Table Entry messages and
updates the FDT.
Distribute Broadcast To Network
The gateway processes Distribute Broadcasts To Network messages from
registered foreign devices.