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230 CHAPTER 10: USING RSTP COMMANDS
Related commands: stp timer forward-delay, stp timer max-age, stp
transmit-limit
.
Example
To set the hello time of the Switch to 300 centiseconds, enter the following:
<4500>system-view
System View: return to User View with Ctrl+Z.
[4500]stp timer hello 300
stp timer max-age Syntax
stp timer max-age centiseconds
undo stp timer max-age
View
System View
Parameter
centiseconds: Specifies the maximum age in centiseconds, ranging from 600 to
4000. By default, the value is 2000 centiseconds.
Description
Use the stp timer max-age command to configure the Max Age of the Switch.
Use the undo stp timer max-age command to restore the default Max Age.
Maximum age is used for judging if an RSTP packet is outdated. If the value is set
too small, the spanning tree will be computed too frequently because the network
congestion may be considered as a link failure. However, if the value is set too
large, the link failure may not be discovered in time. Maximum age is related to
the network “diameter”, or complexity of the switched network. The default
value, 2000, is recommended.
Related commands: stp timer forward-delay, stp timer hello.
Example
To set the Max Age of the Switch to 1000 centiseconds, enter the following:
<4500>system-view
System View: return to User View with Ctrl+Z.
[4500]stp timer max-age 1000
stp transmit-limit Syntax
stp transmit-limit packetnum
undo stp transmit-limit
View
Ethernet Port View