Users Guide

• When you remove a physical port from a port channel in the Error Disable state, the error disabled
state is cleared on this physical port (the physical port is enabled in the hardware).
• You can clear the Error Disabled state with any of the following methods:
• Use the shutdown command on the interface.
• Disable the shutdown-on-violation command on the interface (using the no spanning-
tree stp-id portfast [bpduguard | [shutdown-on-violation]]
command).
• Disable spanning tree on the interface (using the no spanning-tree command in INTERFACE
mode).
• Disabling global spanning tree (using the no spanning-tree command in CONFIGURATION
mode).
Example of Enabling an EdgePort on an Interface
To verify that EdgePort is enabled, use the show config command from INTERFACE mode.
Dell(conf-if-gi-3/11)#spanning-tree mstp edge-port
Dell(conf-if-gi-3/11)#show config
!
interface GigabitEthernet 3/11
no ip address
switchport
spanning-tree mstp edge-port
spanning-tree MSTI 1 priority 144
no shutdown
Dell(conf-if-gi-3/11)#
Flush MAC Addresses after a Topology
Change
Dell Networking OS has an optimized MAC address flush mechanism for RSTP, MSTP, and PVST+ that flushes
addresses only when necessary, which allows for faster convergence during topology changes.
However, you may activate the flushing mechanism defined by 802.1Q-2003 using the tc-flush-standard
command, which flushes MAC addresses after every topology change notification.
To view the enable status of this feature, use the show running-config spanning-tree mstp command
from EXEC Privilege mode.
Multiple Spanning Tree Protocol (MSTP) 599