Version Description8.3.19.0 Introduced on the S4820T.8.3.11.1 Introduced on the Z9000.8.3.7.0 Introduced on the S4810.7.6.1.0 Introduced on the S-Series.7.5.1.0 Introduced on the C-Series.6.2.1.1 Introduced on the E-Series.RelatedCommandsprotocol spanning-tree pvst — enter PVST+ mode.extend system-idTo augment the Bridge ID with a VLAN ID so that PVST+ differentiate between BPDUs for each VLAN, useextend system ID. If the VLAN receives a BPDU meant for another VLAN, PVST+ does not detect a loop, andboth ports can remain in Forwarding state.C9000 SeriesSyntax extend system-idDefaults DisabledCommand Modes PROTOCOL PVSTCommand History This guide is platform-specific. For command information about other platforms, referto the relevant Dell Networking OS Command Line Reference Guide.The following is a list of the Dell Networking OS version history for this command.Version Description9.9(0.0) Introduced on the C9010.9.2(1.0) Introduced on the Z9500.8.3.19.0 Introduced on the S4820T.8.3.11.1 Introduced on the Z9000.8.3.7.0 Introduced on the S4810.8.3.1.0 Introduced.Example Dell(conf-pvst)#do show spanning-tree pvst vlan 5 briefVLAN 5Per-VLAN Spanning Tree Plus (PVST+) 1641