This sets how often, in minutes, the card is allowed to re-raise a threshold-crossing alert for ingress buffer overflow conditions, preventing the same ongoing condition from generating a fresh alert every polling cycle. Tuning this period trades alert-storm suppression against detection latency for a genuinely worsening or recurring ingress buffer overflow; too long a period and an admin might not learn a chronic overflow condition is still active for a while after the first alert. For example, setting this to 15 minutes means a persistent ingress buffer overflow condition re-alerts every quarter hour instead of firing continuously.