Let's say I have a server plugged into a switchport not configured for Portfast (which it should be)...If I reboot the server, and the port goes DOWN/UP therefore triggering a TCN, will that TCN cause a SpanningTree re-convergence AKA network outage? I presume the answer would be 'No' since the server would not be sending a superior BPDU or any BPDU at all therefore the topology would not recalculate. If I remember correctly TCN's don't necessarily mean that the Spanning-tree topology has re-converged, they just signify that a non-edge port went into a forwarding state. Is my understanding correct?