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# FAQ-Why Is the Actual Suppression Value Different from the Configured Traffic Suppression Value

Publication Date:  2015-05-06 Views:  313 Downloads:  0
Issue Description
Why Is the Actual Suppression Value Different from the Configured Traffic Suppression Value?
Solution

The traffic suppression supported by AR series routers is a type of granularity-based suppression.
• The AR1200 series use the committed information rate (CIR) mode.
If the traffic suppression value is between 64 kbit/s and 1000 kbit/s, the granularity is 64 kbit/s. For example, if the traffic suppression value is set to 65 kbit/s, the effective traffic suppression value is 64 kbit/s. If the traffic suppression value is set to 200 kbit/s, the effective traffic suppression value is 128 kbit/s, and so on.
If the traffic suppression value is between 1000 kbit/s and 100,000 kbit/s, the granularity is 1000 kbit/s. For example, if the traffic suppression value is set to 1001 kbit/s, the effective traffic suppression value is 1000 kbit/s. If the traffic suppression value is set to 2999 kbit/s, the effective traffic suppression value is 2000 kbit/s, and so on.
• The AR2200 and AR3200 series use the packet mode. The granularity is 125 packets per second (pps). If the traffic suppression value is set to 10 pps, the effective traffic suppression value is 0 pps. If the traffic suppression value is set to 126 pps, the effective traffic suppression value is 125 pps, and so on.
Therefore, if the traffic suppression value is not set to a multiple of the granularity, the actual suppression value is different from the traffic suppression value that is set. Within a specified granularity range, all suppression values are correct.

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