Allied Telesis AT-FS970M Series - Manual (Page 825)

AT-FS970M Switch Command Line User’s Guide
825
SPANNING-TREE MAX-AGE
Syntax
spanning-tree max-age maxage
Parameters
maxage
Specifies the maximum age parameter. The range is 6 to 40
seconds. The default is 20 seconds.
Mode
Global Configuration mode
Description
Use this command to set the maximum age parameter on the switch. This
parameter determines how long the switch retains bridge protocol data
units (BPDUs) before it deletes them.
The forward time, maximum age and hello time parameters should be set
according to the following formulas, as specified in IEEE Standard 802.1d:
max-age <= 2 x (forward time - 1.0 second)
max-age >= 2 x (hello time + 1.0 second)
Use the no form of this command, NO SPANNING-TREE MAX-AGE, to
set the command to its default value of 20 seconds.
Confirmation Command
“SHOW SPANNING-TREE” on page 816
Example
This example sets the maximum age parameter to 10 seconds:
awplus> enable
awplus# configure terminal
awplus(config)# spanning-tree max-age 10