Configuration of the Multiple Spanning Tree Protocol (MSTP) Properties on SFE/SGE Stackable Managed Switches

Objective

The Multiple Spanning Tree Protocol (MSTP) allows for there to be multiple spanning trees through separation of the number of instances equally between however many spanning trees are required, and then runs the spanning tree instances to reduce CPU load. In doing so, the device can take 1000 VLANS and reduce this number to however many spanning tree instances there are.

The objective of this document is to explain how to configure the properties of the MSTP for SFE/SGE Series Stackable Managed switches.

Applicable Devices

• SFE/SGE Stackable Managed Switch

Software Version

• v3.0.0.17

Configuration of the MSTP Properties

Step 1. Log in to the web configuration utility and choose Bridging > Spanning Tree > MSTP > Properties. The Properties page opens:

Step 2. Enter a user defined spanning tree protocol name in the Region Name field.

Step 3. Enter a revision number from 0 to 65535 into the Revision field.

Step 4. Enter a number from 1 to 40 into the Max Hops field to set how many hops happen in a region before the bridge protocol data unit packet is discarded. The default is 20.

Note: The IST Master displays what the region master is.

Step 5. Click Apply to save any changes made to the Properties page.

Caution: This only saves your configuration to the running configuration file. This means any changes made will be lost if the device is rebooted. If you wish to save these changes even after a system reboot, you need to copy the running configuration file to the startup configuration file. See Copy Configuration File on SFE/SGE Series Managed Switches for more information on how to do this.