I'm preparing for the CCNA and I have a little trouble understanding the outputs for STP.
By default a CISCO switch use PVST (Per VLAN Spanning Tree) but if we use the command show spanning-tree with the default configuration the output is:
Switch#show spanning-tree VLAN0001 Spanning tree enabled protocol IEEE
I don't understand why it said IEEE, as far i know the PVST is a CISCO proprietary protocol.
If I'm not wrong the PVST is a modification from the IEEE 802.1D Common Spanning tree protocol(CSTP) then why in the output said "enabled protocol IEEE"?
Thanks for the help!