American Fibertek SM9p - Manual (Page 154)

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the value, you must reboot the switch assign path priority number. The value
must be multiple of 4096 according to the protocol standard rule.
 Max Age (6-40): the number of seconds a bridge waits without receiving
Spanning-tree Protocol configuration messages before attempting a
reconfiguration. Enter a value between 6 through 40.
 Hello Time (1-10): the time that controls switch sends out the BPDU packet to
check RSTP current status. Enter a value between 1 through 10.
 Forward Delay Time (4-30): the number of seconds a port waits before
changing from its Rapid Spanning-Tree Protocol learning and listening states to
the forwarding state. Enter a value between 4 through 30.
[NOTE] Follow the rule to configure the MAX Age, Hello Time, and Forward
Delay Time.
2 x (Forward Delay Time value –1) > = Max Age value >= 2 x (Hello Time
value +1)
RSTP System Configuration interface
RSTP Port Configuration
You can configure path cost and priority of every port.
 Select the port in the port column field.
 Path Cost: The cost of the path to the other bridge from this transmitting bridge at the
specified port. Enter a number 1 through 200,000,000.
 Priority: Decide which port should be blocked by priority in LAN. Enter a number 0
through 240 (the port of the highest value will be blocked). The value of priority must
be the multiple of 16.
 Admin 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