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Configuration Guide - Network Management and Monitoring

S2720, S5700, and S6720 V200R013C00

This document describes the configurations of Network Management and Monitoring, including SNMP, RMON, RMON2, LLDP, Performance Management, iPCA, NQA, Service Diagnosis, Mirroring, Packet Capture, NetStream, sFlow, TWAMP Light, NETCONF, ECA, Intelligent Video O&M, eMDI, and Network Deception.
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ICMP Test

ICMP Test

The NQA Internet Control Message Protocol (ICMP) test detects whether there are reachable routes from the source to the destination. It has a similar function to the ping command, but provides more output information, including:

  • Average delay
  • Packet loss ratio
  • Time the last packet was correctly received

The system saves the results of the latest five tests by default.

The ICMP test process is as follows:
  1. The source (SwitchA) constructs an ICMP Echo Request packet and sends it to the destination (SwitchB).

  2. The destination receives the ICMP Echo Request packet and responds with an ICMP Echo Reply packet.

  3. The source receives the ICMP Echo Reply packet and calculates the time between when it sent the ICMP Echo Request packet and when it received the ICMP Echo Reply packet.

Figure 6-4  Network for ICMP test

The ICMP test results and historical records are collected in test instances. You can run commands to view the test results and historical records.

NOTE:

An ICMP test is usually conducted to check the connectivity. However, it cannot accurately test the link delay. Therefore, to test link delay or other link performance, you are advised to conduct an ICMP jitter or UDP jitter test.

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Updated: 2019-04-20

Document ID: EDOC1100065680

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