26.3.3 Notes on using PVST +
- <Structure of this section>
(1) Coexistence with other functions
See "22.3 Coexistence of Layer 2 switch function and other functions"
(2) About VLAN 1 (default VLAN) PVST + and Single Spanning Tree
Single Spanning Tree and VLAN 1 PVST+ cannot run at the same time. When Single Spanning Tree runs, the VLAN 1 PVST+ stops.
(3) Prohibited configuration
Configure the Switch and switches running on Single Spanning Tree within one Spanning Tree. Configurations using more than one Spanning Tree will not result in a valid topology.
The figure below shows an example of a prohibited configuration. In this example, because the switch E Single Spanning Tree is connected to more than one PVST+ Spanning Tree, the topology is not valid.
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