H3C S7500 Series Operation Manual page 262

Operation Manual – MSTP
H3C S7500 Series Ethernet Switches
1.2.9 Timeout Time Factor Configuration
A switch regularly sends protocol packets to its neighboring devices at the interval
specified by the Hello time parameter to detect the link failures. Normally, a switch
regards its upstream switch faulty if the former does not receive any protocol packets
from the latter in a period three times of the Hello time and then initiates the spanning
tree regeneration process.
Spanning trees may be regenerated even in a steady network if an upstream switch
continues to be busy. You can configure the timeout time factor to a larger number to
avoid this problem. Normally, the timeout time can be four or more times of the Hello
time. For a steady network, the timeout time can be five to seven times of the Hello
time.
I. Configuration procedure
Follow these steps to configure timeout time factor:
To do ...
Enter system view
Configure the
timeout time factor
for the switch
Normally, you are recommended to set the timeout time factor to 5 through 7.
II. Configuration example
# Configure the timeout time factor to be 6.
<H3C> system-view
[H3C] stp timer-factor 6
1.2.10 Maximum Transmitting Speed Configuration
The maximum transmitting speed of a port specifies the maximum number of
configuration BPDUs a port can transmit in a period specified by the Hello time
parameter. It depends on the physical state of the port and network structure. You can
configure this parameter according to the network.
I. Configuration procedure (in system view)
Follow these steps to configure the maximum transmitting speed for specified ports in
system view:
Use the command ...
system-view
stp timer-factor number
1-18
Chapter 1 MSTP Configuration
Remarks
—
Required
The timeout time factor
defaults to 3.