for exam purpose:If i have to manually configure an stp root bridge and if the network has distribution switches but it also has access switch which one should i select if the access switch seems to be in the center of the network (access switch has ...

HiIf the above command is configured on a switch, what will happen if a port receives a bpdu? does it ignore it or does it go disabled?

On the specs of some non-cisco switches, I found that it supports Asymmetric vlan.Does any one know what is asymmetric vlan?