Spanning-Tree Max-Age - Allied Telesis AT-AR3050S Command Reference Manual

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PANNING REE OMMANDS
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SPANNING TREE MAX AGE

spanning-tree max-age

Overview Use this command to set the max-age. This sets the maximum age, in seconds, that
dynamic spanning tree configuration information is stored in the device before it
is discarded.
Use this command for RSTP, STP or MSTP.
Use the no variant of this command to restore the default of max-age.
spanning-tree max-age <max-age>
Syntax
no spanning-tree max-age
Default The default of spanning-tree max-age is 20 seconds.
Mode Global Configuration
Usage Max-age is the maximum time in seconds for which a message is considered valid.
Configure this value sufficiently high, so that a frame generated by the root bridge
can be propagated to the leaf nodes without exceeding the max-age.
The forward delay, max-age, and hello time parameters should be set according
to the following formula, as specified in IEEE Standard 802.1d:
2 x (forward delay - 1.0 seconds) >= max-age
max-age >= 2 x (hello time + 1.0 seconds)
awplus#
Example
awplus(config)#
Related show spanning-tree
Commands
spanning-tree forward-time
spanning-tree hello-time
C613-50077-01 REV A
Parameter Description
<max-age>
<6-40> The maximum time, in seconds.
configure terminal
spanning-tree max-age 12
Command Reference for AT-AR3050S
AlliedWare Plus™ Operating System - Version 5.4.5-2.x
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