why s12704 did not discard packets as the configuration value?

Created Apr 11, 2019 09:48:10Latest reply Apr 11, 2019 09:50:28 23 1 0 0
  Rewarded E Coins: 0 (problem resolved)

The strategy of configuration is that the messages of some protocols are all limited by 40kbps.

But when we check the result, the actual speed limit of arp-request and IGMP is smaller than the configuration value, why did this happen?


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chenhui  Admin   Created Apr 11, 2019 09:50:28 Helpful(0) Helpful(0)

Hi!

When calculating the speed limit of the flow rate, the device includes the frame gap and the preamble by default, that is, the traffic rate is not only including the data packet traffic. Shorter packets will be more affected by frame clearance and preamble than larger ones.

The rate of speed limit can be configured by qos-car exclude-interframe and qos-shaping exclude-interframe, excluding the frame gap and preamble of the message, thereby improving the accuracy of the speed limiting function.

In fact, this is normal, it's just the different calculation method.
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