0x13 updating the ips
0x13 updating the ips
In addition, the primary unit and subordinate units use the HA heartbeat to keep in constant communication.
The new primary unit then sends gratuitous ARP packets out all of its interfaces to inform attached switches to send traffic to the new primary unit. If a primary unit interface fails or is disconnected while a cluster is operation, a link failure occurs.
The link failure means that a new primary unit must be selected and the cluster unit with the link failure joins the cluster as a subordinate unit.
Just as for a device failover, the new primary unit sends gratuitous arp packets out all of its interfaces to inform attached switches to send traffic to it. If a subordinate unit experiences a device failure its status in the cluster does not change.
If you leave session pickup disabled, the cluster does not keep track of sessions and after a failover, active sessions have to be restarted or resumed.
If a primary unit recovers after a device or link failure, it will operate as a subordinate unit, unless the CLI keyword is enabled and its device priority is set higher than the unit priority of other cluster units (see HA override).
After a failover the new primary unit recognizes open sessions that were being handled by the cluster.
The sessions continue to be processed by the new primary unit and are handled according to their last known state.This failover protection provides a backup mechanism that can be used to reduce the risk of unexpected downtime, especially in a mission-critical environment.The FGCP supports three kinds of failover protection.In Forti Gate active-passive HA, the Forti Gate Clustering Protocol (FGCP) provides failover protection.This means that an active-passive cluster can provide Forti Gate services even when one of the cluster units encounters a problem that would result in complete loss of connectivity for a stand-alone Forti Gate unit.If the primary unit fails, or one of the primary unit interfaces fails, the cluster units use the same mechanisms to detect the failure and to negotiate to select a new primary unit.