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In a stable network, you can avoid such unwanted spanning tree calculations by setting the timeout factor
to 5, 6, or 7.
Follow these steps to configure the timeout factor:
Configure the timeout factor of the device
Configuring the maximum port rate
The maximum rate of a port refers to the maximum number of BPDUs the port can send within each hello
time. The maximum rate of a port is related to the physical status of the port and the network structure.
Make this configuration on the root bridge and on the leaf nodes separately.
Follow these steps to configure the maximum rate of a port or a group of ports:
Enter interface
view or port
group view
Enter Ethernet interface
view or Layer 2
aggregate interface view
interface interface-type
interface-number
Required
Use either command.
port-group manual port-group-
name
Configure the maximum rate of the ports
NOTE:
The higher the maximum port rate is, the more BPDUs will be sent within each hello time, and the more
system resources will be used. By setting an appropriate maximum port rate, you can limit the rate at
which the port sends BPDUs and prevent MSTP from using excessive network resources when the
network becomes unstable. HP recommends that you use the default setting.
Configuring ports as edge ports
If a port directly connects to a user terminal rather than another device or a shared LAN segment, this
port is regarded as an edge port. When a network topology change occurs, an edge port will not cause
a temporary loop. Because a device does not determine whether a port is directly connected to a
terminal, you must manually configure the port as an edge port. After that, the port can transition rapidly
from the blocked state to the forwarding state.
Make this configuration on the root bridge and on the leaf nodes separately.
Follow these steps to specify a port or a group of ports as edge port or ports:
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