spanning tree instance for vlan does not exist

[Eng_manar88]

I need your help as by default cisco switches have only 3 modes (pvst+ ,pvst ,MST) and i have more than 200 vlans per switch when i configured the below spanning-tree it shows no spanning-tree on some vlans although i need to be enabled for all of the, same happened on all other switches and when i tried to

#show spanning-tree vlan 198

#Spanning tree instance(s) for vlan 198 does not exist.

spanning-tree mode rapid-pvst

spanning-tree extend system-id

no spanning-tree vlan 198-201,789-790,831,930,932-933 

spanning-tree vlan 2-4094 priority 28672

Is there any workaround for this

[mahmutaydin90]

Hi,

This is sourced because of nexus  interfaces are in no-switchport by default. If you  do, switchport  ( no need access or trunk)  stp will be calculated.