Command Line Reference Guide

1108 | Per-VLAN Spanning Tree plus (PVST+)
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If shutdown-on-violation is not enabled, BPDUs will still be sent to the RPM CPU.
Example FTOS(conf-if-gi-1/1)#spanning-tree pvst vlan 3 cost 18000
FTOS(conf-if-gi-1/1)#end
FTOS(conf-if-gi-1/1)#show config
!
interface GigabitEthernet 1/1
no ip address
switchport
spanning-tree pvst vlan 3 cost 18000
no shutdown
FTOS(conf-if-gi-1/1)#end
FTOS#
Related
Commands
spanning-tree pvst err-disable
c e s
Place ports in an err-disabled state if they receive a PVST+ BPDU when they are members an untagged
VLAN.
Syntax
spanning-tree pvst err-disable cause invalid-pvst-bpdu
Defaults
Enabled; ports are placed in err-disabled state if they receive a PVST+ BPDU when they are members
of an untagged VLAN.
Command Modes
INTERFACE
Command
History
Usage
Information
Some non-Dell Force10 systems which have hybrid ports participating in PVST+ transmit two kinds of
BPDUs: an 802.1D BPDU and an untagged PVST+ BPDU.
Dell Force10 systems do not expect PVST+ BPDU on an untagged port. If this happens, FTOS places
the port in error-disable state. This behavior might result in the network not converging. To prevent
FTOS from executing this action, use the command no spanning-tree pvst err-disable cause
invalid-pvst-bpdu.
Related
Commands
Note: A port configured as an edge port, on a PVST switch, will immediately transition to the
forwarding state. Only ports connected to end-hosts should be configured as an edge port. Consider an
edge port similar to a port with a spanning-tree portfast enabled.
show spanning-tree pvst View PVST+ configuration
Version 8.2.1.0 Introduced
show spanning-tree pvst View the PVST+ configuration.