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surajsah's avatar
surajsah
Icon for Nimbostratus rankNimbostratus
Apr 17, 2017

Advantage of Active/Active over Active/Standy F5 pair

Hi Team,

 

Could you please tell me, Is there is any advantage of Active/Active over Active/Standy F5 pair ?

 

Thanks much !!

 

application delivery
LTM

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  • Kevin_Davies_40's avatar
    Kevin_Davies_40
    Icon for Nacreous rankNacreous
    Apr 17, 2017

    The main advantage is you have the processing capacity of two devices available to serve traffic instead of one. you can spread your traffic load between them.

     

    Notes

     

    1. SNAT is required for all traffic in active/active.
    2. Local traffic manager supports this, other modules may not.
    • PedroBastidas's avatar
      PedroBastidas
      Icon for Nimbostratus rankNimbostratus
      Apr 01, 2021

      Hi Kevin,

       

      Is it possible to configure F5 LTM active/active when F5 is configured in two-arms mode?

      1. The application servers use F5 as their default gateway.
      2. F5 VS configuration does not use SNAT.

       

      Thanks for your help,

       

      PB

  • Steph's avatar
    Steph
    Icon for Nimbostratus rankNimbostratus
    Apr 17, 2017

    An active-active architecture can be helpful in case of high load over an active-standby architecture. With the drawback that, if you loose one of your nodes, the other one will not be able to cope with complete traffic load.

     

    Most of the time an active-active solution makes sense in a (at least) 3 node cluster where one is on standby, in case of a loss... planned or not (e.g.: maintenance)