I have got a problem with RSTP on Mikrotik-devices:
If a redundant path between two devices is blocked by RSTP, it is only blocked in one direction.
Router 1 and Router 2 are connected via Cable and WDS. The WDS-Link has got higher path costs, so Router 1 does set it up as “disabled” or “alternate port”, Router 2 does show it as “designated port”.
So, Router 1 does send packets on that link and generates traffic on the WDS interface…
Is there any possibility to change that behaviour?
From your description everything appears to be working fine. Only BDPU frames will be exchanged through WDS link to maintain RSTP topology. No other traffic will be forwarded through this link.
Of course, one of the routers does send “regular” packets over the wds link, as its state is forwarding.
If I create a Bridge-Firewall-Rule, I can see that e.g. UDP packets (broadcasts) are sent from ethernet into that link and produce traffic.