Setup Guide

◦ 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.
Flush MAC Addresses after a Topology Change
Dell EMC Networking OS has an optimized MAC address ush mechanism for RSTP, MSTP, and PVST+ that ushes addresses only when
necessary, which allows for faster convergence during topology changes.
However, you may activate the ushing mechanism dened by 802.1Q-2003 using the tc-flush-standard command, which ushes
MAC addresses after every topology change notication.
To view the enable status of this feature, use the show running-config spanning-tree mstp command from EXEC Privilege
mode.
MSTP Sample Congurations
The running-congurations support the topology shown in the following illustration.
The congurations are from Dell EMC Networking OS systems.
Figure 93. MSTP with Three VLANs Mapped to Two Spanning Tree Instances
Router 1 Running-Conguration
This example uses the following steps:
1 Enable MSTP globally and set the region name and revision map MSTP instances to the VLANs.
2 Assign Layer-2 interfaces to the MSTP topology.
3 Create VLANs mapped to MSTP instances tag interfaces to the VLANs.
Multiple Spanning Tree Protocol (MSTP)
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