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201 · Question #136

A configuration change is made on the standby member of a device group. What is displayed as "Recommended Action" on the Device Management Overview screen?

The correct answer is D. Synchronize the standby member configuration to the group. When a configuration change is made directly on the standby member of a BIG-IP device group, the "Recommended Action" is to synchronize that standby member's configuration to the group.

Section 6: Configure High Availability

Question

A configuration change is made on the standby member of a device group. What is displayed as "Recommended Action" on the Device Management Overview screen?

Options

  • AForce active member of device group to standby
  • BActivate device with the most recent configuration
  • CSynchronize the active member configuration to the group.
  • DSynchronize the standby member configuration to the group

How the community answered

(28 responses)
  • A
    7% (2)
  • B
    4% (1)
  • D
    89% (25)

Why each option

When a configuration change is made directly on the standby member of a BIG-IP device group, the "Recommended Action" is to synchronize that standby member's configuration to the group.

AForce active member of device group to standby

Forcing an active member to standby is a failover operation, not a configuration synchronization action.

BActivate device with the most recent configuration

Activating a device with the most recent configuration implies a potential overwrite or rollback, which is not the standard recommendation when a standby has a unique, desired change.

CSynchronize the active member configuration to the group.

Synchronizing the active member configuration to the group would overwrite the change made on the standby, effectively undoing it, which is contrary to wanting to save the standby's change.

DSynchronize the standby member configuration to the groupCorrect

Making a configuration change on the standby member causes its configuration to differ from the active member and the rest of the device group. The "Recommended Action" will prompt the administrator to synchronize the standby's configuration to the group, effectively making the standby the source for the new, updated configuration across the HA pair.

Concept tested: BIG-IP HA device group sync behavior

Source: https://techdocs.f5.com/en-us/big-ip-system-device-management-and-service-clustering-16-1-0/synchronizing-configuration-data-between-devices-in-a-device-group.html

Topics

#High Availability#Config sync#Standby device#GUI messages

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