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Any configuration changes made locally on the switch won't be synchronized with Sophos Central. We recommend making changes from the Sophos Central control panel instead.

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MST instance settings

Multiple Spanning Tree Protocol (MSTP) divides a Layer 2 network into regions, connected by a Common Spanning Tree (CST). Within each region, you can create multiple MST instances managed by an Internal Spanning Tree (IST). These instances are groups of VLANs that share the same topology requirements. The MST instance settings tab lets you create and see MST instances and their settings.

You can see the following settings for each MST instance:

  • MST ID: Shows the ID of the MST instance. You can have a maximum of four MST instances.
  • VLAN list: Shows the VLANs that belong to the MST instance.
  • Priority: Shows the priority of the MST instance.
  • Regional root bridge: Shows the priority of the regional root bridge and its MAC address.
  • Internal root cost: Shows the relative cost of the path to the internal root bridge.
  • Designated root bridge: Shows the priority of the designated root bridge and its MAC address.
  • Root port: Shows the port connected to the path that leads to the root bridge.
  • Actions: Click Edit to change the MST instance settings. Click Delete to remove the MST instance.

To create an MST instance, click Add, configure the settings, then click Apply to save the changes.