Article Number: 000120193
How to manage Multiple Spanning Tree (MSTP) using Command Line on Dell Networking PowerConnect Campus Switches
Summary: How to set up MSTP on Dell PowerConnect switch, How to set up Multiple Spanning Tree Protocol on Dell PowerConnect switch
Article Content
Instructions
This article explains how Multiple Spanning Tree Protocol (MSTP) is implemented on Dell Networking PowerConnect Campus Switches.
Table of Contents
Enabling MSTP
1. Set the STP operational mode to MSTP.
console(config)#spanning-tree mode mst
2. Create and MST instance and associate it to a VLAN
console(config)#spanning-tree mst configuration
console(config-mst)#instance 10 add vlan 10
Every VLAN in your environment will need to be associated with an MST instance in order to participate properly in the MSTP topology.
Dell Networking PowerConnect switches support up to 8 instances of MSTP. Dell Networking N Series switches will support up to 16 instances of MSTP.
3. Create a region name so that all bridges that want to be a part of the same region can form the region.
console(config)#spanning-tree mst configuration
console(config-mst)#name dell
Setting Root Bridge Priority
1. Globally a switch can be set as the Regional Root by configuring a higher root bridge priority.
console(config)#spanning-tree priority 8192
The priority value must be a multiple of 4096. The switch and/or MST Instance with the lowest priority is the root of the spanning tree. The lowest number is the higher priority setting.
2. Then individual switches can be set as priority for a specific MST Instance. This provides more control to balance the flow of traffic per MST Instance.
console(config)#spanning-tree mst 10 priority 4096
Enabling Portfast
It is recommended to configure any edge ports, ports that go to end devices such as printers, phones, servers, workstations, to be set up as Portfast. A port in Portfast will move directly to forwarding state when the link comes up without waiting for the forward-time delay.
console(config)#interface te1/0/1
console(config-if)#spanning-tree portfast
Do not configure portfast on interfaces that attach to another switch or network device.
Verification of Commands
console# show spanning-tree mst-configuration
console#show spanning-tree mst-configuration
Name: Dell
Revision: 0
Instance Vlan Mapped
---------- -----------------------------------------------
10 10
Article Properties
Affected Product
PowerConnect 3524P, PowerConnect 3548, PowerConnect 3548P, PowerConnect 5524, PowerConnect 5524P, PowerConnect 5548, PowerConnect 5548p, PowerConnect 6224, PowerConnect 6224F, PowerConnect 6224P, PowerConnect 6248, PowerConnect 6248P
, PowerConnect 7024, PowerConnect 7024F, PowerConnect 7024P, PowerConnect 7048, PowerConnect 7048P, PowerConnect 7048R, PowerConnect 8024, PowerConnect 8024F, PowerConnect 8100 Series, PowerConnect M6220, PowerConnect M6348, PowerConnect M8024, PowerConnect M8024-K
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Last Published Date
21 Feb 2021
Version
3
Article Type
How To