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Figure 99. Per-VLAN Spanning Tree
The Dell Networking OS supports three other versions of spanning tree, as shown in the following table.
Table 48. Spanning Tree Versions Supported
Dell 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
Implementation Information
● The Dell Networking OS implementation of PVST+ is based on IEEE Standard 802.1w.
● The Dell Networking OS implementation of PVST+ uses IEEE 802.1s costs as the default costs (as shown in the following
table). Other implementations use IEEE 802.1w costs as the default costs. If you are using Dell Networking systems in a
multivendor network, verify that the costs are values you intended.
Configure Per-VLAN Spanning Tree Plus
Configuring PVST+ is a four-step process.
1. Configure interfaces for Layer 2.
2. Place the interfaces in VLANs.
3. Enable PVST+.
Per-VLAN Spanning Tree Plus (PVST+)
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