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Defaults Disabled.
Command Modes CONFIGURATION (conf-pvst)
Supported Modes Full—Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
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”.)
Supported Modes Full—Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
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
Supported Modes Full—Switch
Command
History
Version Description
9.9(0.0) Introduced on the FN IOM.
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+) 931