Configuring The Timeout Factor; Configuring The Maximum Transmission Rate Of Ports - H3C S5500-SI Series Operation Manual

Operation Manual – MSTP
H3C S5500-SI Series Ethernet Switches

1.3.8 Configuring the Timeout Factor

A device sends a BPDU to the devices around it at a regular 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 computing process.
In a very stable network, this kind of spanning tree computing may occur because the
upstream device is busy. In this case, you can avoid such unwanted spanning tree
computing by lengthening the timeout time.
I. Configuration procedure
Follow these steps to configure the timeout factor:
Enter system view
Configure
factor of the device
Note:
Timeout time = timeout factor × 3 × hello time.
Typically, we recommend that you set the timeout factor to 5, or 6, or 7 for a stable
network.
II. Configuration example
# Set the timeout factor to 6.
<Sysname> system-view
[Sysname] stp timer-factor 6

1.3.9 Configuring the Maximum Transmission Rate of Ports

The maximum transmission rate of a port refers to the maximum number of MSTP
packets that the port can send within each hello time.
The maximum transmission rate of an Ethernet port is related to the physical status of
the port and the network structure. You can make your configuration based on the
actual networking condition.
I. Configuration procedure
Following these steps to configure the maximum transmission rate of a port or a group
of ports:
To do...
system-view
the timeout
stp timer-factor number
Use the command...
1-25
Chapter 1 MSTP Configuration
Remarks
—
Optional
3 by default