This sets the maximum number of seconds the backoff algorithm will wait between successive switchover search attempts when both the working and standby interfaces are down and the standby isn't being monitored directly, capping how slow the retry backoff is allowed to grow. This value bounds how long the device might take between attempts to find a working interface during a dual-failure scenario, trading off retry overhead against how quickly the device might notice one side has recovered. For example, setting this to 120 seconds (the field's maximum) means even after many failed backoff attempts, the device will still retry at least every 2 minutes rather than giving up entirely or backing off indefinitely.