W
EB
C
ONFIGURATION
S
OFTWARE
R
EVISED
2018-09-21
RSTP
D
RAWING
N
O
. LP0991-G
2-105
N-Tron
®
Series NT24K
®
Software Manual
The RSTP Ports dialog window displays information such as the path cost and the port state. If the switch sees a
redundant network path, it will put the port with the highest path cost into the Blocking port state where it will
discard packets coming in on that port.
In the example shown below, A2 is a redundant port with port A1, therefore A1 is forwarding and A2 is discarding.
e
Port No:
Indicates the number of the port.
Port Name:
Displays the descriptive name of the port.
Port State:
The current RSTP state of the port is shown here. This state may be seen as "Forwarding, No STP,
Disabled, Listening, Learning, and Discarding.
STP BPDU:
Shows whether or not a legacy STP BPDU has been received or not.
Path Cost:
Displays the current path cost of the port. The range is 0 - 200,000,000. If configured to 0 or Auto,
the path cost will be calculated automatically using the actual speed of the port; otherwise the configured value
will be used. The default value for this field is Auto.
Priority:
The priority of the port is displayed in this column. The available range is 0 - 255. The default value for
this field is 128.
