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undo stp [ vlan vlan-id-list ] timer max-age
Default
The max age is 2000 centiseconds.
Views
System view
Predefined user roles
network-admin
Parameters
vlan vlan-id-list: Specifies a space-separated list of up to 10 VLAN items. Each item
specifies a VLAN or a range of VLANs in the form of
vlan-id1 [ to vlan-id2 ]. The value for
vlan-id2 must be equal to or greater than the value for vlan-id1. The value range for the
vlan-id argument is 1 to 4094. If you set the STP, RSTP, or MSTP max age, do not specify this
option.
time: Specifies the max age in centiseconds, in the range of 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 the configuration BPDU has expired, a new
spanning tree calculation process starts. The max age timer takes effect only on the CIST (or MSTI
0).
As a best practice, do not set 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. This
command makes 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
# In PVST mode, set the max age timer for VLAN 2 to 1000 centiseconds.
<Sysname> system-view
[Sysname] stp vlan 2 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 period by setting the timeout factor.
Timeout period = timeout factor × 3 × hello time.
Use
undo stp timer-factor to restore the default.
Syntax
stp timer-factor factor
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