MSTI Root Port
The port on the bridge that has the lowest path cost to the MSTI regional root bridge is the MSTI root port.
If a bridge has two or more ports with the same path cost, the port with the best port identifier becomes the root port.
The port on the bridge that has the lowest path cost to the MSTI regional root bridge is the MSTI root port.
If a bridge has two or more ports with the same path cost, the port with the best port identifier becomes the root port.