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S12700 V200R010C00 Configuration Guide - QoS

This document describes the configurations of QoS functions, including MQC, priority mapping, traffic policing, traffic shaping, interface-based rate limiting, congestion avoidance, congestion management, packet filtering, redirection, traffic statistics, ACL-based simplified traffic policy, and HQoS.
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Introduction to Traffic Statistics

Introduction to Traffic Statistics

The implementation of Modular Quality of Service command-line interface (MQC) simplifies the QoS configuration. On devices with traffic statistics implemented utilizing MQC, statistics are collected about packets that match traffic classification rules. The statistics on forwarded and discarded packets that match traffic policies are used to check whether traffic policies are correctly applied and to locate faults.

You can run the display traffic policy statistics command to view the statistics on forwarded and discarded packets that match traffic policies only when MQC is used to implement traffic statistics.

Table 8-1 describes the differences between traffic statistics and interface statistics and the commands used to view them.
Table 8-1  Differences between traffic statistics and interface statistics

Collection Mode

Display Command



Traffic statistics

display traffic policy statistics

Packets matching traffic classification rules after a traffic policy is applied

Packets sent to the CPU are not included.

Interface statistics

display interface

All packets that travel through an interface

Packets sent to the CPU are included.

Updated: 2019-08-21

Document ID: EDOC1000142089

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