Command
Modes
CONFIGURATION (conf-pvst)
Command
History
Version 8.3.16.1
Introduced on the MXL 10/40GbE Switch IO Module.
Related
Commands
protocol spanning-tree pvst
— enter PVST+ mode.
edge-port bpdufilter default
Enable BPDU Filter globally to filter transmission of BPDU on port fast enabled interfaces.
Syntax
edge-port bpdufilter default
To disable global bpdu filter default, use the
no edge-port bpdufilter
default
command.
Defaults
Disabled
Command
Modes
CONFIGURATION (The prompt is “config-pvst”.)
Command
History
Version 8.3.16.1
Introduced on the MXL 10/40GbE Switch IO Module.
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.
Syntax
extend system-id
Defaults
Disabled
Command
Modes
PROTOCOL PVST
Command
History
Version 8.3.16.1
Introduced on the MXL 10/40GbE Switch IO Module.
Example
Dell(conf-pvst)#do show spanning-tree pvst vlan 2 brief
VLAN 2
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32768, Address 001e.c9f1.00f3
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32768, Address 001e.c9f1.00f3
We are the root of Vlan 2
Configured hello time 2, max age 20, forward delay 15
Bpdu filter disabled globally
Per-VLAN Spanning Tree Plus (PVST+)
1061