Configuring MSTP+

Use the mstp scope command with the pvst keyword to configure MSTP+.

MSTP+ is not operational until you configure at least one MSTP+ instance and configure the mstp start command. You can create MSTP+ instances the same way you configure MSTP instances. See the “Configuring an MSTP instance” section for information on configuring MSTP.

  1. Configure MSTP+. 
    Device(config)# mstp scope pvst
Enabling MSTP+ scope. MSTP instances need to be configured and 'mstp start' 
need to be entered in order to activate this MSTP+ feature
    Configures MSTP+. CIST is not automatically created and VLANs are not under MSTP+ scope unless you explicitly configure the MSTP+ instances and attach the VLANs to them.
  2. Create an MSTP+ instance. 
    Device(config)# mstp instance 1 vlan 4 to 7
    Creates an MSTP+ instance on VLANs 4 to 7.
  3. Start the MSTP+ protocol. 
    Device(config)# mstp start
  4. Remove the MSTP+ configuration. 
    Device(config)# no mstp scope pvst
    Removes the MSTP+ configuration. The VLANs that were attached to MSTP+ are out of MSTP+ scope and there is no PVST under those VLANs. The non-MSTP VLANs are not affected.
Parent topic: 802.1s Multiple Spanning Tree Protocol