Two Cisco ISE x physical enclosures are redundant in a small-scale HA (PAN+MNT+PSN) configuration, but with this configuration, the Secondary aircraft must be manually promoted when the Primary aircraft fails, so we plan to add one health check node.
In this configuration, if the Primary machine fails, the Secondary machine will automatically be promoted to Primary. What is the service outage time (= downtime that cannot be newly authenticated)? If you know if it will take 15-30 minutes, or if it will take a shorter time, it will be helpful if you can teach.
