R21xx-HP FlexFabric 11900 Layer 2 LAN Switching Command Reference

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• stp timer forward-delay
• stp timer max-age
stp timer max-age
Use stp timer max-age to set the max age timer of the device.
Use undo stp timer max-age to restore the default.
Syntax
stp timer max-age time
undo stp timer max-age
Default
The max age is 2000 centiseconds.
Views
System view
Predefined user roles
network-admin
Parameters
time: Sets the max age in centiseconds. The value range is 600 to 4000 in increments of 100 (as in 600,
700, 800).
Usage guidelines
In the CIST of an MSTP network, the device determines whether a configuration BPDU received on a port
has expired based on the max age timer. If yes, a new spanning tree calculation process starts. The max
age timer does not take effect on other MSTIs except the CIST (or MSTI 0).
HP recommends not setting the max age timer with this command. Instead, you can specify the network
diameter of the switched network by using the stp bridge-diameter command and let the spanning tree
protocols automatically calculate the optimal settings for the max age timer. If the network diameter uses
the default value, the max age timer also uses the default value.
Examples
# In MSTP mode, set the max age timer to 1000 centiseconds.
<Sysname> system-view
[Sysname] stp timer max-age 1000
Related commands
• stp bridge-diameter
• stp timer forward-delay
• stp timer hello
stp timer-factor
Use stp timer-factor to configure the timeout interval by setting the timeout factor.
Use undo stp timer-factor to restore the default.