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Comparison between PVST+ and MSTP

Summary: Root bridge, root port, STP, network loops, Per VLAN Spanning Tree Plus (PVST+), Multiple Spanning Tree (MST), IEEE standard 802.1s, MSTP, designated ports, blocking ports, spanning tree instance ...

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Published November 2014

In this white paper, the basic workings of STP are discussed and a comparison between PVST+ and MSTP is provided. The Spanning Tree Protocol (STP) is used to protect networks from loops. Over time, there have been several enhancements to this protocol, including Per VLAN Spanning Tree Plus (PVST+) and Multiple Spanning Tree (MST). PVST+ is a Cisco proprietary protocol while MSTP is based on the IEEE standard 802.1s.

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