The reason of S series switch Ping packet loss

For S-series chassis switches:
The Ping packets of the local switch are processed by the switch as a fib-hit packet. For packets of type fib-hit, the switch sends to CPUs at the default CAR value to prevent this type of packets from impacting the CPU. In the case of the default CAR value, the number of ping packets per second is too large for the CAR value, so the switch will discard some packets. Increase the fib value of fib-hit, you can solve the packet loss problem.

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