AT-GS950/16PS Switch Web Interface User’s Guide
General Guidelines
Here are the guidelines for MSTIs:
The
A MSTI can contain any number of VLANs.
A VLAN can belong to only one MSTI at a time.
A switch port can belong to more than one spanning tree instance at a time by being an untagged and tagged member of VLANs belonging to different MSTI’s. This is possible because a port can be in different MSTP states for different MSTI’s simultaneously. For example, a port can be in the MSTP blocking state for one MSTI and the forwarding state for another spanning tree instance. For further information, refer to “Ports in Multiple MSTIs,” next.
