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S12700 V200R011C10 Configuration Guide - Network Management and Monitoring

This document provides the configurations of network management and monitoring features supported by the product, including SNMP, RMON and RMON2, LLDP, Performance Management, iPCA, NQA, Service Diagnosis, Mirroring, Packet Capture, Traffic Distribution, NetStream, sFlow, and TWAMP Light.
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Overview of NQA

Overview of NQA


Network Quality Analysis (NQA) measures network performance and collects statistics on delay, jitter, and packet loss ratio. NQA monitors network quality of service (QoS) in real time and locates and diagnoses network faults.


To visualize the quality of network services and allow users to check whether the quality of network services meets requirements, the following measures must be taken:

  • Collect data on network devices to describe the quality of network services.

  • Deploy probe devices to monitor the quality of network services.

To carry out the preceding measures, devices must provide statistical parameters such as delay, jitter, and packet loss ratio. This requires dedicated probe devices, which increases operation costs.

NQA can precisely test the network operating status and output statistics without using dedicated probe devices, effectively reducing costs.

NQA measures the performance of different protocols running on the network. It allows you to collect network operation indexes on the following in real time:
  • Total HTTP connection delay
  • TCP connection delay
  • DNS resolution delay
  • File transmission speed
  • FTP connection delay
  • DNS resolution error rate
Updated: 2019-10-21

Document ID: EDOC1000178113

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