BACnet BBMD via IPSEC Tunnel

Networking Solutions
1

Spoken to Justin.

Issue with trying to get BACnet router working with a IPSEC tunnel on a RUT976.

IPSEC tunnel is configured with remote subnet 172.28.64.65/26 and local 10.100.93/024 rut is 10.100.93.1.

Remote subnet device 172.28.64.125 can ping the rut LAN IP through the IPSEC tunnel and the rut can ping the remote device.

BACnet configuration:

BBMD enabled

BBMD interface = qmimux

BIP configuration:

Network ID 9310

Interface = eth0.1

MSTP enabled on RS485 port

With this setup I can connect to the MSTP device through the rut when locally connected. When I attempt to register with the BBMD from the remote device I get a response

BBMD Message Received(6): addr=10.100.93.1, port=47809

BBMD<<< BVLC-Result received: resultCode=0

but it is not forwarding messages because when I do a Who-is from the remote device I get no response.

I have tried changing the interface on the BBMD and BIP and no matter what I do it does not work. (The firmware does not allow the BBMD and BIP to bound to the same interface) If its moved from qmimux then it stops responding to registrations.

Please can you advise.

3

Greetings,

For troubleshooting purposes, we will require more sensitive information from your end, such as the troubleshoot file, which may contain passwords, public IP addresses, serial numbers, and such. To avoid leaking this information, we have sent you a form to fill out, which you will receive in your e-mail inbox that you have registered your account with in the forums. In the Ticket ID field of the form, please enter the ID of this thread, which is 17271.

Best Regards,
Justinas

4

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