Forum Discussion
CA_Valli
MVP
This very much depends on your configuration. According to KB:
The BIG-IP system initiates failover according to any of several events that you define. These events fall into these categories:
System fail-safeWith system fail-safe, the BIG-IP system monitors various hardware components, as well as the heartbeat of various system services. You can configure the system to initiate failover whenever it detects a heartbeat failure.
Gateway fail-safe
With gateway fail-safe, the BIG-IP system monitors traffic between an active BIG-IP system in a device group and a pool containing a gateway router. You can configure the system to initiate failover whenever some number of gateway routers in a pool of routers becomes unreachable.
VLAN fail-safe
With VLAN fail-safe, the BIG-IP system monitors network traffic going through a specified VLAN. You can configure the system to initiate failover whenever the system detects a loss of traffic on the VLAN and the fail-safe timeout period has elapsed.
HA groups
With an HA group, the BIG-IP system monitors trunk, pool, or cluster health to create an HA health score for a device. You can configure the system to initiate failover whenever the health score falls below configurable levels.
Auto-failback
When you enable auto-failback, a traffic group that has failed over to another device fails back to a preferred device when that device is available. If you do not enable auto-failback for a traffic group, and the traffic group fails over to another device, the traffic group remains active on that device until that device becomes unavailable.
Gajji
Apr 07, 2022Cirrostratus
Thanks for the answer
But i still won't understand how do i make one device as Active.. what config need to be done.