Using the TSX-1620 Bridge View
3-28 The Spanning Tree Port Parameters Window
component— is used to determine which port on this bridge will be the
Designated Port for that segment. A lower number indicates a higher priority; the
default is 80. The allowable range is 0 to FF.
Path Cost
The portion of the total path cost associated with this port. Lowering a port’s Path
Cost makes a port more competitive in the selection of the Designated Port. The
default value is 100 for Cabletron bridges. The allowable range is from 1 to 65535.
Figure 3-12. Spanning Tree Port Parameters Window
Designated Cost
The cost of the path from this port to the Root Bridge on the network. If the
highlighted port is the Root Port, the Designated Cost is 0. If this bridge is the
Root Bridge, all its bridge ports have a Designated Cost of 0. This value is
compared to the Root Path Cost field in received configuration BPDUs.
Designated Root
The unique Bridge Identifier of the bridge that is assumed to be the Root Bridge
on the network; this information is contained in the Configuration BPDUs.