This counter records the highest instantaneous bit rate observed among rate-limited traffic at this flow point during the current interval. It tells the admin how hard the flow point's rate-limiting function was pushed at its peak moment, useful for judging whether the configured rate limit was nearly exceeded or comfortably enforced. For example, if cmFlowPointStatsIBRRlMax consistently sits right at the flow's configured rate-limit ceiling, the admin would infer the customer's peak demand regularly reaches the enforced cap.