When a device with active traffic groups becomes unavailable, each of the active NAT or SNAT translation addresses, and IP addresses associated with an iApp application Typical traffic group members are: floating self IP addresses, virtual addresses, Each traffic group on a device includes application-specific floating IP addresses as One or more floating IP addresses associated with a traffic group These are the IP addresses that application traffic uses when passing through a BIG-IP VLAN HA, but is only used when the local device is unreachable through A local management IP address This unicast management IP address serves the same purpose as the static self IP address for When aĭevice in the device group fails to receive a response from the local device, the BIG-IP system triggers failover. To communicate continually with the local device to assess the health of that device. The types of IP addresses that you need to specify on each device are: A local, static self IP address for VLAN HA This unicast self IP address is the main address that other devices in the device group use Other addresses ensure that application traffic processing continues when failover occurs. Some of these IP addressesĮnable continual, high availability (HA) communication among devices in the device group, while Requires you to specify certain types of IP addresses on each device.
Part of configuring a Sync-Failover device group is configuring failover. 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. 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. Whenever the health score falls below configurable levels. You can configure the system to initiate failover HA groups With an HA group, the BIG-IP system monitors trunk, pool, or cluster health toĬreate an HA health score for a device. Loss of traffic on the VLAN and the fail-safe timeout period has elapsed. You can configure the system to initiate failover whenever the system detects a VLAN fail-safe With VLAN fail-safe, the BIG-IP system monitors network traffic going through a You can configure the system to initiate failover whenever some number of gateway routers in a Gateway fail-safe With gateway fail-safe, the BIG-IP system monitors traffic between an activeīIG-IP system in a device group and a pool containing a gateway router. You can configure the system to initiateįailover whenever it detects a heartbeat failure. TheseĮvents fall into these categories: System fail-safe With system fail-safe, the BIG-IP system monitors various hardware components,Īs well as the heartbeat of various system services. The BIG-IP system initiates failover according to any of several events that you define.
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