Stp Timer-Factor; Stp Transmit-Limit - 3Com S7906E Command Reference Manual

stp timer-factor

Syntax
stp timer-factor number
undo stp timer-factor
View
System view
Default Level
2: System level
Parameters
number: Timeout factor, in the range of 1 to 20.
Description
Use the stp timer-factor command to configure the timeout time of the device by setting the timeout
factor. Timeout time = timeout factor × 3 × hello time.
Use the undo stp timer-factor command to restore the default timeout factor.
By default, the timeout factor of the device is set to 3.
After the network topology is stabilized, each non-root-bridge device forwards configuration BPDUs to
the surrounding devices at the interval of hello time to check whether any link is faulty. Typically, if a
device does not receive a BPDU from the upstream device within nine times the hello time, it will
assume that the upstream device has failed and start a new spanning tree calculation process.
In a very stable network, this kind of spanning tree calculation may occur because the upstream device
is busy. In this case, you can avoid such unwanted spanning tree calculations by lengthening the
timeout time (by setting the timeout factor to 4 or more). We recommend that you set the timeout factor
to 5, or 6, or 7 for a stable network.
Examples
# Set the timeout factor of the device to 7.
<Sysname> system-view
[Sysname] stp timer-factor 7

stp transmit-limit

Syntax
stp transmit-limit packet-number
undo stp transmit-limit
View
Ethernet port view, port group view, Layer-2 aggregate port view
Default Level
2: System level
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