Stp Transmit-Limit - H3C S7500E Series Command Reference Manual

View
System view
Default Level
2: System level
Parameters
factor: Timeout factor, in the range of 1 to 20.
Description
Use the stp timer-factor command to set the timeout factor, which decides the timeout time. Timeout
time = timeout factor × 3 × hello time.
Use the undo stp timer-factor command to restore the default.
By default, the timeout factor is 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 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, thus saving the network resources. H3C recommends that you set the timeout factor to 5, or 6, or
7 for a stable network.
Related commands: stp timer hello.
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 limit
undo stp transmit-limit
View
Layer 2 Ethernet interface view, port group view, Layer 2 aggregate interface view
Default Level
2: System level
Parameters
limit: Maximum number of BPDUs the port(s) can send within each hello time, in the range of 1 to 255.
Description
Use the stp transmit-limit command to set the maximum transmission rate of the port(s), which
specifies the maximum number of BPDUs the port(s) can send within each hello time.
Use the undo stp transmit-limit command to restore the system default.
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