Users Guide

Per-VLAN Spanning Tree Plus (PVST+)

Per-VLAN spanning tree plus (PVST+) is a variation of spanning tree — developed by a third party — that allows you to configure a

separate spanning tree instance for each virtual local area network (VLAN).

Topics:

• Protocol Overview

• Implementation Information

• Configure Per-VLAN Spanning Tree Plus

• Enabling PVST+

• Disabling PVST+

• Influencing PVST+ Root Selection

• Modifying Global PVST+ Parameters

• Modifying Interface PVST+ Parameters

• Configuring an EdgePort

• PVST+ in Multi-Vendor Networks

• Enabling PVST+ Extend System ID

• PVST+ Sample Configurations

Protocol Overview

PVST+ is a variation of spanning tree — developed by a third party — that allows you to configure a separate spanning tree instance for

each virtual local area network (VLAN).

For more information about spanning tree, refer to the Spanning Tree Protocol (STP) chapter.

604 Per-VLAN Spanning Tree Plus (PVST+)