Service Manual

• If no BPDU is received from a remote device, loop guard places the port in a Loop-Inconsistent Blocking
state and no trac is forwarded on the port.
Example
Dell(conf-if-te-1/1/1)#spanning-tree pvst vlan 3 cost 1800
Dell(conf-if-te-1/1/1)#end
Dell(conf-if-te-1/1/1)#/1show config
!
interface TenGigabitEthernet 1/1/1
no ip address
switchport
spanning-tree pvst vlan 3 cost 18000
no shutdown
Dell(conf-if-te-1/1/1)#end
Dell#
Related Commands
show spanning-tree pvst — views the PVST+ conguration.
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.
S6000–ON
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
Command History
This guide is platform-specic. 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
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.2.1.0 Introduced.
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.
1142
Per-VLAN Spanning Tree Plus (PVST+)