This topic explains the supported spanning-tree instances for PVST+, Rapid PVST+, and MSTP modes on the Switch or Switch stack.
This topic provides reference information about the number of Spanning Tree instances supported in different Spanning Tree modes.
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In PVST+ or Rapid PVST+ mode, the switch or switch stack supports up to 128 Spanning Tree instances.
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In MSTP mode, the switch or switch stack supports up to 64 MST instances. The number of VLANs that can be mapped to a particular MST instance is 512.