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Dell PowerEdge FN I/O Module Command Line Reference Guide 9.10(0.0)

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spanning-tree pvst err-disable

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 the Err-Disabled state if they receive a PVST+ BPDU when they are members of an untagged VLAN.

Command Modes

INTERFACE

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.

Usage Information

Some non-Dell Networking systems which have hybrid ports participating in PVST+ transmit two kinds of BPDUs: an 802.1D BPDU and an untagged PVST+ BPDU.

Dell Networking systems do not expect PVST+ BPDU on an untagged port. If this happens, the system places the port in the Error-Disable state. This behavior might result in the network not converging. To prevent the system from executing this action, use the no spanning-tree pvst err-disable command cause invalid-pvst-bpdu.

Related Commands

show spanning-tree pvst — views the PVST+ configuration.