Network address translation
When using Network address translation, coordinate with the IT department to obtain a
public IPaddress and a port exception in the firewall.
Use public address Select to enable network address translation and port forwarding.
Public address The static public IP address supplied by the IT department.
Public port The public UDP port supplied by the IT department. For security, use a port that
is not in the typical range of BACnet ports.
Table
The items in Table define the Broadcast Distribution Table (BDT) for the BBMD. Enter an IP
address, UDP port number, and IP subnet mask of each BBMD that is part of the
internetwork.
l If none of the BBMDs are using a public IP address, the BDT entries in every BBMD are
the same.
l If the BBMD uses a public IPaddress, the BDTs are different in every router. Each BDT
will use its own private IPaddress, port number, and subnet mask and the public
IPaddress, port number, and subnet mask for all of the other BBMDs on the
internetwork.
To add or delete entries, do the following:
l Adding entries—Click Add for additional entries.
l Deleting entries—Select sel and click Delete.
Max FDT Table Entries Sets the maximum number of foreign devices that can register at
one time. The value for MAX FDT Entries is 1–128.
Enable FD Service When selected, the BBMD permits foreign devices to register with the
BBMD. The maximum number of devices is limited by the value in Max FDT Table Entries.
Accept Remote Configuration When selected, the BBMD will update the BDT with a table it
receives from another BBMD.
Other IProuting protocols
l BACnet IP routing on page 27
l BACnet PAD routing on page 32
l BACnet foreign device routing on page 28
l Router Core properties page on page 35
BAC-5051E Router Section 3: Setting up routing
Revision J 31
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