Setup Guide

Related Conguration Tasks
The following are the related conguration tasks for MSTP.
• Creating Multiple Spanning Tree Instances
• Adding and Removing Interfaces
• Inuencing MSTP Root Selection
• Interoperate with Non-Dell EMC Networking OS Bridges
• Changing the Region Name or Revision
• Modifying Global Parameters
• Modifying the Interface Parameters
• Conguring an EdgePort
• Flush MAC Addresses after a Topology Change
• Debugging and Verifying MSTP Congurations
• Prevent Network Disruptions with BPDU Guard
• Enabling SNMP Traps for Root Elections and Topology Changes
•
Enable Multiple Spanning Tree Globally
MSTP is not enabled by default. To enable MSTP globally, use the following commands.
When you enable MSTP, all physical, VLAN, and port-channel interfaces that are enabled and in Layer 2 mode are automatically part of the
MSTI 0.
• Within an MSTI, only one path from any bridge to any other bridge is enabled.
• Bridges block a redundant path by disabling one of the link ports.
1 Enter PROTOCOL MSTP mode.
CONFIGURATION mode
protocol spanning-tree mstp
2 Enable MSTP.
PROTOCOL MSTP mode
no disable
Example of Verifying MSTP is Enabled
To verify that MSTP is enabled, use the show config command in PROTOCOL MSTP mode.
DellEMC(conf)#protocol spanning-tree mstp
DellEMC(config-mstp)#show config
!
protocol spanning-tree mstp
no disable
DellEMC#
Adding and Removing Interfaces
To add and remove interfaces, use the following commands.
To add an interface to the MSTP topology, congure it for Layer 2 and add it to a VLAN.
If you previously disabled MSTP on the interface using the no spanning-tree 0 command, to enable MSTP, use the following
command.
Multiple Spanning Tree Protocol (MSTP)
539