HA/VRRP trigger via health check failed

[TK_Liew]

I provided the answer below.

Configuring 1+1 Backup by High Availability (HA)

Hi Team. Can anyone please confirm if these are the scenarios in which the slave unit will become master? Am I missing one? In case of total failure LAN port disconnection All enabled wan ports disconnection Thanks.

HA failover is based on the criteria below:

• Hardware failure (no power).
• LAN down.
• All WANs down.

WAN health check failure shouldn’t trigger the HA failover based on the design. Do allow me to explain this. WAN health check failure is due to the WAN interface failed to contact the health check target (e.g. 8.8.8.8). Normally, this is caused by the WAN connection (WAN link). For example, when WAN1 of the master device failed to contact 8.8.8.8, the slave device will face the same problem even the HA failover is triggered (since the master and slave are connected to the same WAN link). So, from the design point of view, there is no point to trigger failover when the WAN health check failure.

Anyway, maybe you have a special used case of this. Can you help to elaborate more of your used case?

Thanks.