Dear admin,

One day I found that The firewall forbits any ICMP packet to pass as its default. It was a great problem for me when I was troubleshooting. Then I left this problem to Huawei Support website.

The solution I got from there was awesome.

Huawei provided solution:

If the ICMP packets is allowed to pass.We must define the rule.

Add the firewall rule:"access-list to-internet permit ip any 213.42.185.65 255.255.255.255".2.Add this rule to the interface "to-internet":"access-group to-internet in interface to-internet".3.Clear the xlate:"clear xlate".4.Ping again from "10.99.31.59" to "211.136.17.107".The result is OK.

Thanks to Huawei team.

very good share...