Service Manual
no shutdown
Dell(conf-if-te-0/1)#end
Dell#
Related Commands
show spanning-tree pvst — views the PVST+ configuration.
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
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.
tc-flush-standard
Enable the MAC address flushing after receiving every topology change notification.
Syntax
tc-flush-standard
To disable, use the no tc-flush-standard command.
Defaults Disabled.
Command Modes CONFIGURATION
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 By default, the system implements an optimized flush mechanism for PVST+. This implementation helps in flushing
the MAC addresses only when necessary (and less often) allowing for faster convergence during topology
Per-VLAN Spanning Tree Plus (PVST+) 993