Why is the configured storm suppression inconsistent with the actual suppression result

The traffic suppression supported by an AR is implemented based on granularity:
The AR1200 series routers adopt the CIR method.
(1) In the range from 64 to 1000, the granularity is 64 kbit/s. If the traffic suppression value is set to 65 kbit/s, the rate 64 kbit/s takes effect. If the traffic suppression value is set to 200 kbit/s, the rate 128 kbit/s takes effect.
(2) In the range from 1000 to 100000, the granularity is 1000 kbit/s. If the traffic suppression value is set to 1001 kbit/s, the rate 1000 kbit/s takes effect. If the traffic suppression value is set to 2999 kbit/s, the rate 2000 kbit/s takes effect.
The AR2200 series, AR3200 series, and AR3600 series routers adopt the packet method, and the granularity is 125 pps. For example, if the traffic suppression value is set to 10, the throughput 0 pps takes effect. If the traffic suppression value is set to 126 pps, the throughput 125 pps takes effect.
When the configured traffic suppression value is not an integral multiple of a granularity, actual suppression result is inconsistent with the configuration. The suppression function is proper provided that the actual suppression rate is within the granularity range.

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