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Figure 7-4 STP Config
The following entries are displayed on this screen:
Global Config
STP:
Select Enable/Disable STP function globally on the switch.
Version: Select the desired STP version on the switch.
STP: Spanning Tree Protocol.
RSTP: Rapid Spanning Tree Protocol.
MSTP: Multiple Spanning Tree Protocol.
Parameters Config
CIST Priority:
Enter a value from 0 to 61440 to specify the priority of the
switch for comparison in the CIST. CIST priority is an important
criterion on determining the root bridge. In the same condition,
the switch with the highest priority will be chosen as the root
bridge. The lower value has the higher priority. The default value
is 32768 and should be exact divisor of 4096.
Hello Time Enter a value from 1 to 10 in seconds to specify the interval to
send BPDU packets. It is used to test the links. 2*(Hello Time + 1)
≤ Max Age. The default value is 2 seconds.
Max Age: Enter a value from 6 to 40 in seconds to specify the maximum
time the switch can wait without receiving a BPDU before
attempting to reconfigure. The default value is 20 seconds.
Forward Delay: Enter a value from 4 to 30 in seconds to specify the time for the
port to transit its state after the network topology is changed.
2*(Forward Delay-1) ≥ Max Age. The default value is 15 seconds.
TxHold Count: Enter a value from 1 to 20 to set the maximum number of BPDU
packets transmitted per Hello Time interval. The default value is
5pps.
Max Hops: Enter a value from 1 to 40 to set the maximum number of hops
that occur in a specific region before the BPDU is discarded.
The default value is 20 hops.
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