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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).
Protocol Overview
A sample PVST+ topology is shown below.
For more information about spanning tree, refer to the Spanning Tree Protocol (STP) chapter.
Figure 101. Per-VLAN Spanning Tree
The Dell Networking OS supports three other versions of spanning tree, as shown in the following table.
Table 60. Spanning Tree Versions Supported
Dell Networking Term IEEE Specification
Spanning Tree Protocol (STP) 802 .1d
Rapid Spanning Tree Protocol (RSTP) 802 .1w
36
Per-VLAN Spanning Tree Plus (PVST+) 655