American Fibertek SM9p - Manual (Page 87)

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You can configure path cost and priority of every port.
1. Select the port in Port column.
2. Path Cost: The cost of the path to the other bridge from this transmitting bridge at the
specified port. Enter a number 1 through 200000000.
3. Priority: Decide which port should be blocked by priority in LAN. Enter a number 0
through 240. The value of priority must be the multiple of 16.
4. P2P: Some of the rapid state transactions that are possible within RSTP are
dependent upon whether the port concerned can only be connected to exactly one
other bridge (i.e. it is served by a point-to-point LAN segment), or can be connected to
two or more bridges (i.e. it is served by a shared medium LAN segment). This function
allows the P2P status of the link to be manipulated administratively. True is P2P
enabling. False is P2P disabling.
5. Edge: The port directly connected to end stations cannot create bridging loop in the
network. To configure the port as an edge port, set the port to “True” status.
6. Neighbor: The port includes the STP mathematic calculation. True is not including
STP mathematic calculation. False is including the STP mathematic calculation.
7. Apply the setting.