28.6.2 Configuring Single Spanning Tree

Points to note

The example below shows how to start or stop Single Spanning Tree. Single Spanning Tree does not run simply by setting the pvst or rapid-pvst operation mode, but start operation according to settings.

VLAN 1 (default VLAN) and Single Spanning Tree cannot be used at the same time. When Single Spanning Tree is set, the VLAN 1 PVST+ stops.

Command examples

1. (config)# spanning-tree single

   Runs Single Spanning Tree. This setting stops the VLAN 1 PVST+, making VLAN 1 a Single Spanning Tree target.

2. (config)# no spanning-tree single

   Stops Single Spanning Tree. When a VLAN 1 PVST+ is not set to stop, and 250 PVST+ instances are not already running, VLAN 1 PVST+ operation starts automatically.