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Is it okay to leave BACnet/IP or BACnet/Ethernet port enabled on an I/A MNB-1000 even if it's not physically connected to a network?

Issue

Is it okay to leave BACnet/IP or BACnet/Ethernet port enabled on an I/A MNB-1000 even if it's not physically connected to a network?

Environment

WorkPlace Tech, MNB-1000, all versions

Cause

When an MNB-1000 is configured as an MS/TP-only device, and does not use BACnet/IP or BACnet/Ethernet, you must be sure that BACnet/IP and BACnet/Ethernet are both disabled. Leaving BACnet/IP or BACnet/Ethernet enabled would mean that the MNB-1000 is still acting as a router. Leaving BACnet/IP or BACnet/Ethernet enabled when not used and not physically connected can product routing loops. This is because the MNB-1000 think there are networks present and tries to route to them.

Resolution

Caution the MNB-1000 is not recommended to be use as an MSTP device.  It is meant to be used as a BACnet/IP or BACnet/ Ethernet device. 

  

When an MNB-1000 is configured as an MS/TP-only device, and does not use BACnet/IP or BACnet/Ethernet, be sure that BACnet/IP and BACnet/Ethernet are both disabled.

Note: If either BACnet/IP or BACnet/Ethernet is needed for maintenance reasons, you could access the MNB-1000 via its MS/TP trunk and turn on the needed port. Once you completed your maintenance, you can then disable the unused port again.

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Last update:
2 weeks ago
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