Command Line Reference Guide

disable
Disable PVST+ globally.
Z9500
Syntax
disable
To enable PVST+, use the no disable command.
Defaults Disabled.
Command
Modes
CONFIGURATION (conf-pvst)
Command
History
This guide is platform-specific. For command information about other platforms,
refer to 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 Description
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.
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.
Related
Commands
protocol spanning-tree pvst — enter PVST+ mode.
extend system-id
To augment the Bridge ID with a VLAN ID so that PVST+ differentiate between BPDUs for each VLAN, use
extend system ID. If the VLAN receives a BPDU meant for another VLAN, PVST+ does not detect a loop,
and both ports can remain in Forwarding state.
Z9500
Syntax
extend system-id
Defaults Disabled
Command
Modes
PROTOCOL PVST
1308
Per-VLAN Spanning Tree Plus (PVST+)