Administrator Guide

Table Of Contents
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.
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