Users Guide
42
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 congure a
separate spanning tree instance for each virtual local area network (VLAN).
Protocol Overview
PVST+ is a variation of spanning tree — developed by a third party — that allows you to congure 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 109. Per-VLAN Spanning Tree
The Dell Networking OS supports three other variations of spanning tree, as shown in the following table.
Table 68. Spanning Tree Variations Dell Networking OS Supports
Dell Networking Term IEEE Specication
Spanning Tree Protocol (STP) 802 .1d
Rapid Spanning Tree Protocol (RSTP) 802 .1w
660
Per-VLAN Spanning Tree Plus (PVST+)