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SPAN Mirror Processing

  • 1.  SPAN Mirror Processing

    Posted Mar 23, 2021 08:03 AM
    Hello all,

    Is there some documentation regarding the amounth of processing resources required to enable SPAN / Port mirroring on different flavors of FortiSwitches ?
    I have notice some high use of RAM (75%) even on FSW that are not heavily loaded.

    What are the risk while enabling large numbers of src-ingress + src-egress ports ?
    - Not enough CPU
    - Not enough RAM
    - Not enough bandwidth (in case of oversubscription) > what will be the consequences ?

    Finally, is SPAN handle at ASIC level in FSW ? any documnetation about this?



  • 2.  RE: SPAN Mirror Processing

    Posted Jan 10, 2022 04:50 PM

    I have not seen any data on this, but I would imagine this aligns with the FortiSwitch HW Limitations 

    6.4.6 States that MAX EGRESS Session is 4 for the models above

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