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DES-7200 Configuration Guide Chapter 10 MSTP Configuration
10-29
10.3.10 Configuring
Max-Age Time
Configure the maximum period of time before the BPDU message is aged out.
The default value is 20s.
In the privilege mode, perform these steps to configure the Max-Age Time:
Command Function
DES-7200# configure terminal
Enter the global configuration mode.
DES-7200(config)#
spanning-tree
max-age seconds
Configure the max age time ranging from 6 to 40s,
20s by default.
DES-7200(config)# end
Return to the privileged EXEC mode.
DES-7200# show
running-config
Verify the configuration.
DES-7200# copy
running-config
startup-config
Save the configuration.
To restore the max age time to the default value, execute the no spanning-tree
max-age command in the global configuration mode.
Caution
Hello Time, Forward-Delay Time and Max-Age Time have their
own value ranges. Meanwhile, the following condition must be
addressed: 2*(Hello Time + 1.0 seconds) <= Max-Age Time <=
2*(Forward-Delay – 1.0 second). Otherwise, it may cause the
topology instability
10.3.11 Configuring
Tx-Hold-Count
Configure the maximum number of the BPDU message sent per second, 3 by
default.
To configure the Tx-Hold-Count, execute the following commands in the global
configuration mode:
Command Function
DES-7200# configure terminal
Enter the global configuration mode.
DES-7200(config)# spanning-tree
tx-hold-count numbers
Configure the maximum number of the
BPDU message sent per second in the
range of 1 to10, 3 by default.