Multiple Instance
802.1s Multiple Spanning Tree Protocol (MSTP)
–Device
2.Configure MST instances.
•Configure one instance for each VLAN group that you want to operate as an active topology within the region to which the switch belongs. When you create the instance, you must include a minimum of one VID. You can add more VIDs later if desired.
To move a VLAN from one instance to another, first use no spanning- tree instance < n > vlan < vid > to unmap the VLAN from the current instance, then add the VLAN to the other instance. (While the VLAN is unmapped from an MSTI, it is associated with the region’s IST instance.)
3.Configure the priority for each instance.
4.Configure MST instance port parameters. Enable
5.Enable