Hi,
Your question is similar to that one in the following question post.
https://forum.huawei.com/enterprise/en/problem-6730-collect-traffic-snmp/thread/586492-861It’s a matter of sampling interval. Please try to disable the function of periodically collecting traffic statistics on interfaces and monitor the status.
<HUAWEI> system-view
[HUAWEI] set if-mib sample-interval 0