Which command enables RSTP on a switch?

Spanning-tree mode rapid-pvst

Switch(conf)#Spanning-Tree mode rapid-pvst

this comand will be used

console# configure enable the rstp on a switch

Spanning-Tree mode rapid-pvst

Note this command will be executed in Global Configuration Mode, which will be something like below 

Switch(Config)#

Thanks 

Rapid Spanning Tree Protocol (RSTP)

Switch#configure terminal

Switch(config)#spanning-tree mode rapid-pvst

switch(config)#spanning-tree mode rapid-pvst

Rapid Spanning Tree Protocol (RSTP) is an enhancement of the original STP 802.1D protocol.The RSTP 802.1w protocol is an IEEE open implementation. Cisco has its own proprietary

implementation of RSTP, that includes the benefits of its Per-VLAN spanning tree protocols, calledRapid-PVST+.To activate the Rapid-PVST+ protocol: switch(config)#spanning-tree mode rapid-pvst