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Carlande_Desarm's avatar
Carlande_Desarm
Icon for Nimbostratus rankNimbostratus
Jan 12, 2016

bigip comes back active immediately after manual failover

I have the situation where after failing over active device to standby, standby device becomes active and immediately goes back to standby which means that the previously active device reverted back to active again even after the failover.

 

Any body can explain possible reasons such a situation can occur and possible causes. also ways to mitigate and fix it. Thank you.

 

application delivery
BIG-IP
LTM

10 Replies

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  • Ryannnnnnnnn's avatar
    Ryannnnnnnnn
    Icon for Altocumulus rankAltocumulus
    Jan 12, 2016

    If you look in the GUI under Device Management -> Traffic Groups -> Your Traffic Group, Properties is the "Auto Failback" check-box enabled or disabled?

     

    • Carlande_Desarm's avatar
      Carlande_Desarm
      Icon for Nimbostratus rankNimbostratus
      Jan 13, 2016
      hi Ryan, i ve not checked that... could you please elaborate on the difference and relationship between when it's enabled or disabled when referring to that kind of manual failover issue? Thanks
    • crodriguez's avatar
      crodriguez
      Ret. Employee
      Jan 13, 2016
      If Auto Failback is enabled for the traffic group, after a failover event, the traffic group floats from the device that failed to the device that has taken over and is now active (the formerly standby device). When the device that failed comes back online again, the traffic group will automatically float back to it's "home" device, essentially causing another failover event from the perspective of connected clients. If Auto Failback is NOT enabled on the traffic group, then it will stay on whatever device it floats to on failover regardless of whether or not its "home" device is online again.
    • Carlande_Desarm's avatar
      Carlande_Desarm
      Icon for Nimbostratus rankNimbostratus
      Feb 01, 2016
      Thanks all, so in this case, what is the f5 recommended best practice? Auto Failback enabled or disabled?
  • Ryan_80361's avatar
    Ryan_80361
    Icon for Cirrostratus rankCirrostratus
    Jan 12, 2016

    If you look in the GUI under Device Management -> Traffic Groups -> Your Traffic Group, Properties is the "Auto Failback" check-box enabled or disabled?

     

    • Carlande_Desarm's avatar
      Carlande_Desarm
      Icon for Nimbostratus rankNimbostratus
      Jan 13, 2016
      hi Ryan, i ve not checked that... could you please elaborate on the difference and relationship between when it's enabled or disabled when referring to that kind of manual failover issue? Thanks
    • crodriguez's avatar
      crodriguez
      Ret. Employee
      Jan 13, 2016
      If Auto Failback is enabled for the traffic group, after a failover event, the traffic group floats from the device that failed to the device that has taken over and is now active (the formerly standby device). When the device that failed comes back online again, the traffic group will automatically float back to it's "home" device, essentially causing another failover event from the perspective of connected clients. If Auto Failback is NOT enabled on the traffic group, then it will stay on whatever device it floats to on failover regardless of whether or not its "home" device is online again.
    • Carlande_Desarm's avatar
      Carlande_Desarm
      Icon for Nimbostratus rankNimbostratus
      Feb 01, 2016
      Thanks all, so in this case, what is the f5 recommended best practice? Auto Failback enabled or disabled?