H3C Technologies H3C WX6000 Series Access Controllers - Manual (Page 181)

20-23
Configuring the Timeout Factor
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 calculation by lengthening the timeout
time.
Configuration procedure
Follow these steps to configure the timeout factor:
To do... Use the command... Remarks
Enter system view system-view —
Configure the timeout factor of the
device
stp timer-factor number
Optional
3 by default
z
Timeout time = timeout factor × 3 × hello time.
z
Typically, we recommend that you set the timeout factor to 5, or 6, or 7 for a stable network.
Configuration example
# Set the timeout factor to 6.
<Sysname> system-view
[Sysname] stp timer-factor 6
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.
Configuration procedure
Follow these steps to configure the maximum transmission rate of a port or a group of ports:
To do... Use the command... Remarks
Enter system view system-view —
Enter Ethernet
interface view interface interface-type
interface-number
Enter Ethernet
interface view
or port group
view
Enter port group
view
port-group { manual
port-group-name | aggregation
agg-id }
Required
Use either command.
Configurations made in Ethernet
interface view will take effect on the
current port only; configurations
made in port group view will take
effect on all ports in the port group.