ping packet loss regularly

Hi Sprout,

Packet loss occurs regularly during the ping operation. This is usually caused by the ping protection mechanism of the switch. Because the packet rate exceeds the cpcar value, the packet is discarded.

You can run the display cpu-defend statistics all command to view ICMP packet statistics. If the Drop column of the ICMP packet type contains statistics, the CAR value is too small. In this case, you can adjust the cpcar value and then perform the test again.

The following is an example of adjusting the cpcar value:

 # Configure the CAR action rule for the attack defense policy named test. Set the packet type to ICMP and the committed information rate to 64 kbit/s.

<HUAWEI> system-view

[HUAWEI] cpu-defend policy test

[HUAWEI-cpu-defend-policy-test] car packet-type icmp cir 64

[HUAWEI] cpu-defend-policy test global

If the packet loss is caused by the protection mechanism when the link is tested, you do not need to modify it.