Specify the Multiple Spanning Tree Protocol (MSTP) or Rapid Spanning Tree Protocol (RSTP) mode. If you do not specify a protocol, the switch uses the default mode.
boot config flags spanning-tree-mode mstp
boot config flags spanning-tree-mode rstp
default boot config flags spanning-tree-mode
no boot config flags spanning-tree-mode
The default is MSTP.
Global Configuration
You must save the configuration and reboot the switch for a configuration change to take effect.