Contec FX-DS110-APL, User Manual, Page: 49 / 69

Spanning Tree Algorithms (STA)
FX-DS110-APL
41
Port Level
Root Port
On each bridge, the port having the lowest path cost to the root
bridge is called the root port.
If more than one port has the same path cost, the port with the
smallest port identifier (port priority and assigned port ID) is the
root port.
Designated Port
The port on the designated bridge connected to the LAN segment is
called the designated port.
On the bridge, packages are only transferred on the port that is the
root port, and other ports are blocked.
Port Priority
Set in the range 0 to 255. The lower the number, the higher the
priority level.
Path Cost
The port cost on a path is called the path cost, and is set as follows
when this product is initialized. This value is based on IEEE
standard 802.1D, but can be changed.
･
10Mbps LAN segment 100