Supermicro SSE-F3548S - 6.14 Forwarding Time

Supermicro SSE-F3548S/SSE-F3548SR Configuration User’s Guide
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The max age value should be less than twice of (forward time – 1).
Follow the steps below to change the max age time.
Step
Command
Description
Step 1
configure terminal
Enters the configuration mode
Step 2
To configure the max age time:
spanning-tree max-age<age-value>
Configures the switch spanning tree
max age time.
age-value – Spanning tree max age
value may be from 6 to 40 seconds.
The default max age is 20.
Step 3
end
Exits the configuration mode.
Step 4
show spanning-tree bridge max-age
show spanning-tree
Displays the spanning tree
configuration parameters including the
switch priority values.
Step 5
write startup-config
Optional step – saves this spanning tree
configuration to be part of startup
configuration.
The “no spanning-tree max-age” command resets the spanning tree max age to the default
value of 20.
The example below shows how to configure the spanning tree max age.
Configure the max age as 12.
SMIS# configure terminal
SMIS(config)# spanning-tree max-age12
SMIS(config)# end
6.14 Forwarding Time
The switch waits for the forwarding time interval of the listening and learning states before going to the
forwarding state.
The default forwarding time is 15 seconds. Hence, the switch waits for 15 seconds in the listening state
and waits for another 15 seconds in the learning state before going to the forwarding state.
The forwarding time value should maintain the following relation with max age:
2*(Forward Time -1)≥MaxAge