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BBMD
C
ONFIGURATION
3-20
MATRIX BACnet Router User Manual (6/6/2007)
3.9 BBMD
BBMD provides a method for users to setup and configure the broadcast distribution table (BDT) used to
reference other Matrix Router BBMD products or third-party BACnet Routers with BBMD enabled. By
default, a read only entry will automatically exist for the Matrix Router under configuration.
Figure 3-16 BBMD Configuration
Table 3-6: BBMD and BDT Settings
Variable Values Notes
IP Address nnn.nnn.nnn.nnn Specifies the IP address of the BBMD or device acting as a
BBMD on the IP network.
Port # 47808 - 47823 Specifies the UDP Port configuration of the BBMD or device
acting as a BBMD on the IP network
Network Mask nnn.nnn.nnn.nnn Specifies a mask of the network of the BBMD being entered.
Typically set to 255.255.255.255, which indicates that BACnet
IP messages go only to the BBMD of interest and to no other
devices on the subnet.
Changing this setting (most commonly to a 255.255.255.0) is a
common cause of IP routing issues, since most IP routers will
not allow messages to be forwarded to multiple devices as a
security provision. In nearly all applications, leave this setting
for each BBMD at 255.255.255.255.