Switching to the MSTP Mode

Context

If an interface on an MSTP-enabled device is connected to an STP-enabled device, the interface switches to the STP-compatible mode.

If the STP-enabled device is switched to MSTP mode, or if it is powered off or disconnected from the MSTP-enabled device, the interface cannot switch to MSTP mode. In this case, use the stp mcheck command to switch the interface to MSTP mode.

Procedure

Switch to the MSTP mode in the interface view.
1. Run system-view
  The system view is displayed.
2. Run interface interface-type interface-number
  The view of the Ethernet interface that participates in spanning tree calculation is displayed.
3. Run stp mcheck
  The device is switched to the MSTP mode.
Switch to the MSTP mode in the system view.
1. Run system-view
  The system view is displayed.
2. (Optional) Run stp process process-id
  The MSTP process view is displayed.
  
  Skip this step if you perform configurations in the MSTP process 0.
3. Run stp mcheck
  The device is switched to the MSTP mode.