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Seckin_149390's avatar
Seckin_149390
Icon for Nimbostratus rankNimbostratus
Apr 15, 2014

Initial Failover Device Precedence

Hi,

 

I want to learn something about when we configure initially HA environment How Big-ip devices decide which device on device group of HA will be active or passive ?

 

Is this about peer ID or Hash ID ?

 

Kind Regards.

 

8 Replies

  • Traffic Groups are active or passive rather than devices in a device group assuming we're talking about TMOS v11.

     

    I'm guessing but I'd assume any new TG will initially be active on whatever device it's first configured on. It could then move based on further configuration, manual intervention or device failure.

     

  • Thanks Beneath,

     

    I want to say that when we created device group on any device, one device is active and the other one is passive on device group as you know but compared to what ?

     

    I think you are saying this is related to which device is configured as initial on traffic group. Am i right ?

     

    Regards.

     

  • nathe's avatar
    nathe
    Icon for Cirrocumulus rankCirrocumulus

    Also, if you mean which BIG-IP device is Active or Standby (rather than what WLB was getting at with traffic groups) then the Active device will be the one that you configured the device group on i.e. device A you setup Device Trust and reference device B's ip address, username/password, then on device A you setup the device group (sync failover) and move both members to it. Device A will be Active, Device B will be Standby.

     

    And WLB is correct re Traffic Group. Set it up on one, the Active normally, and then move it to the Standby once complete.

     

    N

     

  • Clarification: I forgot about the default TG1 so I guess that means TG1 (and any other TGs configured) are initially active on whichever device is used to create the device group. Any further TGs added after that point will be active on whichever device you create them on initially.

     

    This all of course relies on the devices having their configurations sync'd at suitable times.

     

  • are you talking about failover order? the failover order is introduced in 11.4.0.

     

  • Hi nitass,

     

    i am talking about initial setup not failover order after creating high avaliability.

     

    I think version is not important.