Configuring Timers Of Mstp - H3C S9500 Series Operation Manual

Operation Manual – MSTP
H3C S9500 Series Routing Switches
Note:
Network diameter is a parameter that indicates network size. A bigger network
diameter represents a larger network size.
Based on the network diameter you configured, MSTP automatically sets an optimal
hello time, forward delay, and max age for the device.
The configured network diameter is effective for the CIST only, and not for MSTIs.
II. Configuration example
# Set the network diameter of the switched network to 6.
<Sysname> system-view
[Sysname] stp bridge-diameter 6

1.3.7 Configuring Timers of MSTP

MSTP involves three timers: forward delay, hello time and max age. You can configure
these three parameters for MSTP to calculate spanning trees.
I. Configuration procedure
Follow these steps to configure the timers of MSTP:
Enter system view
Configure the forward
delay timer
Configure the hello time
timer
Configuring the max age
timer
These three timers set on the root bridge of the CIST apply on all the devices on the
entire switched network.
To do...
system-view
stp timer forward-delay
centi-seconds
stp timer hello
centi-seconds
stp timer max-age
centi-seconds
Use the command...
1-26
Chapter 1 MSTP Configuration
Remarks
—
Optional
1,500 centiseconds (15
seconds) by default
Optional
200 centiseconds (2
seconds) by default
Optional
2,000 centiseconds (20
seconds) by default