Milan Technology MIL-SME801P - Manual (Page 137)

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The priority and path cost can be configured for each port. Click the Apply
button to modify the configuration.
Parameter Description
Port Priority
A change to the Port Priority affects which port will be
the root port. The lowest number has the highest
priority. The range is 0-255 and the default setting for
all ports is 128. If you change the value, you must
reboot the switch.
Path Cost
Path Cost specifies the path cost of the port that the
switch uses to determine which ports are the
forwarding ports. The lowest number becomes the
forwarding port. The range is 1-65535 and the
default value is based on IEEE802.1D
10Mb/s = 50-600 100Mb/s = 10-60
If you change the value, you must reboot the switch.