Cables to Go TE100-S55 - Manual (Page 30)

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A T THE P ORT LEVEL
Designated Port: This is the port on each Designated Bridge that
forwards data packets for the attached LAN segment.
Root Port: Each bridge has a Root Port that has the lowest Path
Cost to the Root Bridge. In case there are several ports with the
same Path Cost, the one with the lowest Port Identifier (Port
Priority + pre-assigned Port ID) becomes the Root Port
1 .
Port Priority: This is a user changeable parameter for each port
on the bridge. In conjunction with a pre-set port ID, this
parameter determines the Root Port of a Bridge.
Path Cost: This parameter is fixed 2 and will not be shown. The
100Mb segments will have auto-assigned Path Cost of 10, while
the 10Mb segments will have auto-assigned Path Cost of 100.
1 In a bridge, a port is Blocked, if it is not a Root or a Designated Port.
2 This is a changeable parameter, based on the STA specification.
However, it is fixed by the TE100-S55 implementation.