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Spanning Tree Protocol
Settings Guidelines
Max-Age
The maximum age before the switch considers the received
BPDUinformation on a port to be expired. Max-age is used when inter-
working with switches outside the region.
Range of values is 6 to 40.
Default value is 20.
Max-Hops Maximum hops is used inside the MSTregion. Hop count is decremented
each time the BPDUis forwarded. If max-hops reaches zero, the switch dis-
cards the BPDUand ages out the information on the receiving port.
Range of values is 1 to 40.
Default value is 20.
Using the CLI:
config switch stp settings
set forward-time <4 - 30>
set hello-time <1 - 10>
set max-age <6 - 40>
set max-hops <1 - 40>
set name <region name>
set revision <0 - x>
set status {enable | disable}
end
Configuring an MSTinstance
STPtopology is unique for each MSTinstance in the region. You can configure a different bridge priority and port
parameters for each instance.
Using the web-based manager:
1. Go to Switch > STP > Instance
2. Create a new MSTinstance, or select an existing instance to edit.
3. Update the instance parameters as described in the following table.
4. Click Apply to save the settings.
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FortiSwitchOS-3.2.0