Hello,
Querying Traffic, Physical Bandwidth, or Bandwidth Utilization
This section describes how to query the change curve of the traffic, physical bandwidth, or bandwidth utilization within a certain period. The FE/GE ports and the ports on the packet plane support this operation.
Prerequisites
You must be an NM user with NE maintainer authority or higher.
The flow monitoring function is enabled on the Ethernet port. To enable the flow monitoring function on a port, see Setting Traffic, Physical Bandwidth, or Bandwidth Utilization of Ethernet Ports.
Tools, Instruments, and Materials
NCE

Web LCT also supports this operation and the steps are the same as those on the NCE.
Background Information
After the flow monitoring function is enabled, the system saves the statistics about the received traffic and transmitted traffic with an interval of 15 minutes. In normal cases, the system stores the statistics that are collected in the last 30 days. In the system, every measurement entry shows the average transmit rate and average receive rate within a period of 15 minutes. You can query the statistics in the last 30 days.
This operation allows only the queries about port-based Ethernet traffic by using NCE. To collect statistics about the traffic based on Tunnel/PW/egress queue/VLAN, see Browsing Current Ethernet Performance or Browsing Historical Ethernet Performance Data.
Procedure
Query traffic, physical bandwidth, and bandwidth utilization.

Detail
https://support.huawei.com/hedex/hdx.do?lib=EDOC110011342131180BCL&docid=EDOC1100113421&lang=en&v=02&tocLib=EDOC110011342131180BCL&tocV=02&id=EN-US_ALARMREF_0188447685&tocURL=resources/alm/topic/port_exc_traffic.html&p=t&fe=1&ui=3&keyword=check+traffic
Thanks