Root port
On a non-root bridge, the port which has the least cost to reach the boot bridge is the root port.
The root port communicates with the root bridge. Each non-root bridge has only one root port. The root bridge has no root port.
On a non-root bridge, the port which has the least cost to reach the boot bridge is the root port.
The root port communicates with the root bridge. Each non-root bridge has only one root port. The root bridge has no root port.