Users Guide

▪ 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).
To verify that EdgePort is enabled, use the show config command from INTERFACE mode.
Dell(conf-if-te-3/11)#spanning-tree mstp edge-port
Dell(conf-if-te-3/11)#show config
!
interface TenGigabitEthernet 3/11
no ip address
switchport
spanning-tree mstp edge-port
spanning-tree MSTI 1 priority 144
no shutdown
Dell(conf-if-te-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.
MSTP Sample Configurations
The running-configurations support the topology shown in the following illustration.
The configurations are from Dell Networking OS systems.
Figure 92. MSTP with Three VLANs Mapped to Two Spanning Tree Instances
Router 1 Running-Configuration
This example uses the following steps:
Multiple Spanning Tree Protocol (MSTP)
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