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sol14515: The Force to Standby feature should not be used when the HA group feature is enabled

Original Publication Date: 08/08/2013
Updated Date: 03/28/2014


The HA groups feature is designed to assign the active system without user intervention. Therefore, the operator of a BIG-IP system should not attempt to manually control HA operation by using the Force to Standby feature. As a result, the HA group feature may override the active/standby state and may reassign the active system automatically.

If a manual change of the active state is required, F5 recommends that you disable the HA group feature, or that you take the active system offline temporarily.


To take a system offline, perform one of the following procedures:

Taking a system offline using the BIG-IP Configuration utility

  1. Log in to the BIG-IP Configuration utility of the system you want to take offline.
  2. Navigate to Device Management > Devices.
  3. Select the system for which you are logged in.
  4. Click Force Offline.
  5. To verify the change, click OK.

Taking a system offline using the Traffic Management Shell (tmsh) utility

  1. Log in to tmsh by entering the following command:


  2. To take a system offline, enter the following command:

    run sys failover offline

  3. To bring a system online, enter the following command:

    run sys failover online

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