Contemporary Control Systems BASrouter Installation Guide (Firmware 2.x) - Manual (Page 20)

TD071200-0IK
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7 Advanced Features
The right side of the Router Configuration Page (Figure 15) has
the following three buttons that access advanced features:
Advanced This accesses the Advanced Configuration Page
that is discussed in Section 7.1.
Status This accesses the Status Screen that is discussed
in Section 7.2
Security This accesses the Security Screen that is
discussed in Section 7.3
7.1 Advanced Configuration Page
The BACnet discovery process uses broadcast messages, but
broadcasts are blocked by an IP router. To deal with subnets, a
BACnet/IP Broadcast Management Device (BBMD) must be used.
You may deploy the BASRT-B in a situation in which BACnet
communication is confined to just one IP subnet. In such a case,
advanced configuration is unneeded. But if you are dealing with
more than one IP subnet, you will need the BBMD functionality
offered in the advanced configuration screen shown in Figure 16.
To implement BBMD in your router, select the BBMD Enable
checkbox in the upper section of the screen. (NOTE: If this box
is not checked, you will get a blank screen when you attempt to
view Figure 17 or Figure 18.) Unless your router must deal with
multiple IP networks, in the BBMD UDP Port drop-down menu
accept the ―Primary‖ default setting.
Warning: If you enable BBMD when it is not needed, the
router will attempt to find devices that are not present and thus
traffic flow will be impaired and communication will suffer.
If the router is used to route between two BACnet/IP networks,
the Secondary BACnet/IP UDP Port and Secondary BACnet/IP
Network numbers must be entered.
When the router is used in a NAT environment and its local IP
address is non-routable (for example, 192.168.x.y) and it is
communicating with BACnet devices on the other side of the
NAT firewall, the Public IP Address is used in the Forwarded-