Allied Telesis AT-S80 - Manual (Page 310)

Chapter 32: Rapid Spanning Tree Protocol (RSTP)
310 Section II: Web Browser Interface
Link Status
Indicates the whether the link on the port is up or down.
Designated Root
Indicates the designated root bridge to which the switch’s root port is
actively connected.
Designated Cost
Indicates the sum of all the root port costs on all bridges, including the
switch, between the switch and the root bridge.
Designated Bridge
Indicates the an adjacent bridge to which the root port of the switch is
actively connected.
Designated Port
Indicates the root bridge to which the root port of the switch is actively
connected.