Administrator Guide

Per-VLAN Spanning Tree Plus (PVST+)

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.

Figure 100. Per-VLAN Spanning Tree

The Dell EMC Networking OS supports three other variations of spanning tree, as shown in the following table.

Table 55. Spanning Tree Variations Dell EMC Networking OS Supports

Dell EMC Networking Term IEEE Specification

Spanning Tree Protocol (STP) 802 .1d

Rapid Spanning Tree Protocol (RSTP) 802 .1w

Multiple Spanning Tree Protocol (MSTP) 802 .1s

Per-VLAN Spanning Tree Plus (PVST+) Third Party

Per-VLAN Spanning Tree Plus (PVST+) 591