| ... | between nodes; TG-DUT1-DUT2-TG 3-node circular topology with
| ... | single links between nodes; TG=DUT1=DUT2=TG 3-node circular
| ... | topology with double parallel links and TG=DUT=VM 3-node topology
| ... | with VM and double parallel links.
| ... | between nodes; TG-DUT1-DUT2-TG 3-node circular topology with
| ... | single links between nodes; TG=DUT1=DUT2=TG 3-node circular
| ... | topology with double parallel links and TG=DUT=VM 3-node topology
| ... | with VM and double parallel links.