Understanding the high availability health check computation

The following table summarizes the factors examined in a health check computation:

  • State of the failover interface sets
  • State of the critical interfaces
  • State of the route monitors

The following table summarizes the health check computation.

Failover interface sets Critical interfaces Route monitor Condition
N Y N If the system has any critical interfaces, all of those critical interfaces must be UP.
Y Y N If the system has any failover interface sets, all of those failover interface sets must be UP.
Y Y Y If the system has any route monitors configured, all monitored routes must be present in the failover interface set.

Understanding the high availability health check computation