Cisco :: STP With Switches Linked By Single Hub?

Question: how would STP or RSTP behave in a star topology with a hub in the middle?i.e. you have four switches all linked to the same central hub. Single links, no loops.Each switch would then get BPDUs from everybody.Going by theory, it should be OK since it still sees the root's BPDU and will see the link to the hub as the root port, despite presence of other BPDUs from other switches? No different from receiving an inferior BPDU from an upstream switch and a superior BPDU from a further upstream root switch.I guess I could lab it by turning off spanning tree on a switch to simulate a hub? I've never previously had to deal with STP issues where there are hubs that aren't strictly point to point bridging so to speak (ok they're not bridging but you get the drift).I've got a scenario I'm examining at the moment where this is the topology, except all switches have bpdufilter running hence effectively no spanning tree. I'm curious to know what would happen should I remove the bpdufilter.I realise there is zero benefit in spanning tree in this instance as I don't have any redundant loops to fall back on, but I'm reluctant to turn off STP on those vlans (since obviously theres stuff behind those switches). The BPDUfilter method seems like an elegant solution but I wonder if its actually necessary.(the hub is actually a VPLS mesh, most sites terminate PE to CE router but I'm playing around with switches as the termination points – run our own Q in Q, split vlans off before it gets to layer 3 as separation, etc.)