Hi guys. What am I missing? This is happening on few devices (not one model, not one arch, lates version and also older versions). I see there is traffic on ports but when i run TROCH on each port or bridge where the port is, there is nothing.

Traffice between ports 1 and 5. ports are in bridge LAN. I understand its nothing there on bridge - as i guess its goes thro switch chip from port to port (HW offload). But there should be something on 1 and/or 5 port

See attached pic

As the ethernet ports are marked as S(laves) in the tables, I would assume that they are member ports of bridges and "hardware acceleration" is enabled (the value of hw in the respective rows of /interface bridge port is set to yes). So any frames which pass through these ports to other ports of the same switch chip are counted by the switch chip counters, but as they never get to the CPU, the torch cannot see them.

Yes its right. So if traffic goes thro one switch chip, than you can not see what connections are there?