Mode

[JMemphix]

By default LM has no filters set so yes it will work. If there will be too big traffic you can add filters in LM.  Communication is done via multicast, just make sure IT didn't block this.

Thanks Daniel. I will default it and try again. 

Is there a particular setting that confirms all is correct - Interface or Arp table?

Network is a few basic Teltonika switches to expand on a basic BMS network.