Per VLAN Spanning Tree Plus (PVST+) allows for the definition of an individual STP instance per VLAN. Traditional or Normal PVST+ mode relies on the use of the older 802.1D STP for switched network convergence in the event of a link failure.
Rapid Per VLAN Spanning Tree Plus (R-PVST+) allows for the use of 802.1w with PVST+. This allows for the definition of an individual RSTP instance per VLAN, while providing for much faster convergence than would be attained with the traditional 802.1D STP. By default, when RSTP is enabled, R-PVST+ is enabled on the . . .
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