I have the below topology SW1 -- SW2 -- SW3SW1 and SW2 already ar part from a ring that is running REP (i.e. no spanning -tree on the link between SW1 and SW2)No , I got a new switch (SW4) and connect it to SW1 and SW3 (which means I have now closed circuit)My questions is , would that be an issue? SW4 -STP- SW1 - REP - SW2 -STP - SW3 - STP - SW4 Thanks