Spanning Tree Protocol doubt

Saif Yaseen

Hii,

I didn't really understand the following :-

(config)# Show spanning-tree
The O/P will show that " Spanning tree enabled protocol ieee "

In the above command it shows that the protocol enabled is ieee

but when running the follwing
(config)# Show running-configuration | include Spanning-tree mode
The O/P will show that PVST

The question that comes to my mind is that, how can it be a ieee protocol while PVST mode is on.
shouldn't the PVST be STP ?

Ronnie Wong

@Saif-Yaseen,

Remember that when you issue the show spanning-tree command. This displays per VLAN. So hopefully, this makes sense. That VLAN doesn't see PVST, it only sees its own STP instance (i.e. ieee)

But the whole running-config which is global, the mode is global. So it shows: PVST