# BACnet Connection Help

**URL:** <https://forum.inductiveautomation.com/t/bacnet-connection-help/97258>\
**Category:** Ignition\
**Tags:** ignition81\
**Created:** [October 15, 2024, 2:37pm UTC](https://forum.inductiveautomation.com/t/bacnet-connection-help/97258 "2024-10-15T14:37:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![brownja667](https://avatars.discourse-cdn.com/v4/letter/b/a183cd/32.png) [@brownja667](https://forum.inductiveautomation.com/u/brownja667)\
**Post date:** [October 15, 2024, 2:37pm UTC](https://forum.inductiveautomation.com/t/bacnet-connection-help/97258/1 "2024-10-15T14:37:03Z")

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Attempting to establish a connection for customer to a BACnet device. First time using BACnet, so I apologize in advance. After dropping the firewalls on our Kepware server and Ignition server, we are able to see the device tags using Kepware.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/e/5/e5602f3d263ccecb6a97d959ea83a64aa092f44d.png)

The customer would prefer to bring the tags directly to Ignition. I have been unable to do that and am looking for some guidance.

Ignition Server: 40.10.136.X  
DeviceId 40.10.168.X  
Kepware Server: 40.10.240.X

After looking at the Ignition documentation, I see that the device must be in the same subnet as the Ignition server. We have not seen that restriction with Kepware. **Is this specific to Ignition?**

I believe we are seeing Scenario 3.  
[Understanding BACnet – Inductive Automation Help Center](https://support.inductiveautomation.com/hc/en-us/articles/4422782818957-Understanding-BACnet)

Also, I do not see any log messages in my Gateway related to BACnet failing. Is this normal when no connection can be established?

Ignition settings:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/a/d/ad53a438c3cd6a9d39d46049380b4e10829a554a.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/9/3/93da06fb9299575dcee12a0eeb40ad7d981d3967.png)

Any help would be appreciated. Thanks in advance.

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<div class="post-metadata">

**Author:** ![josborn](https://avatars.discourse-cdn.com/v4/letter/j/4bbf92/32.png) [@josborn](https://forum.inductiveautomation.com/u/josborn)\
**Post date:** [October 15, 2024, 5:30pm UTC](https://forum.inductiveautomation.com/t/bacnet-connection-help/97258/2 "2024-10-15T17:30:30Z")

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From my understanding routers block broadcasts so the ignition server and the bacnet device would need to be on the same subnet or you would need a BBMD. Does your kepware have any settings for BBMD?

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<div class="post-metadata">

**Author:** ![brownja667](https://avatars.discourse-cdn.com/v4/letter/b/a183cd/32.png) [@brownja667](https://forum.inductiveautomation.com/u/brownja667)\
**Post date:** [October 15, 2024, 8:32pm UTC](https://forum.inductiveautomation.com/t/bacnet-connection-help/97258/3 "2024-10-15T20:32:43Z")

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Thanks for the response. Our Kepware server is currently set to talk to the device directly. This may be "unicast". We do not have a BBMD device on the network.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/6/c/6cd3d8ee4930e28c75c7d98d5fa37f961c016604.png)