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Configuration Guide - Network Management and Monitoring

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Network Management and Monitoring, including SNMP, RMON, NETCONF, OpenFlow, LLDP, NQA, Mirroring, Packet Capture, Packet Trace, Path and Connectivity Detection Configuration, NetStream, sFlow, and iPCA.
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Example for Configuring an NQA Test to Detect the DNS Resolution Speed on an IP Network

Example for Configuring an NQA Test to Detect the DNS Resolution Speed on an IP Network

This section provides an example for configuring an NQA test to measure the performance of interaction between a client and the DNS server.

Networking Requirements

On the network shown in Figure 8-18, Switch A needs to access host A using the domain name Server.com. A DNS test instance can be configured on Switch A to measure the performance of interaction between Switch A and the DNS server.

Figure 8-18 Networking diagram for detecting the DNS resolution speed

Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure reachable routes between Switch A, the DNS server, and host A at the network layer.

  2. Configure a DNS test instance on Switch A and start the test instance to detect the DNS resolution speed on an IP network.

Data Preparation

To complete the configuration, you need the following data:

  • IP address of the DNS server

  • Domain name and IP address of host A

Procedure

  1. Configure reachable routes between Switch A, the DNS server, and host A at the network layer. (Omitted)
  2. Configure a DNS test instance and start it.

    <HUAWEI> system-view
    [~HUAWEI] sysname SwitchA
    [*HUAWEI] commit
    [~SwitchA] dns resolve
    [*SwitchA] dns server 10.3.1.1
    [*SwitchA] nqa test-instance admin dns
    [*SwitchA-nqa-admin-dns] test-type dns
    [*SwitchA-nqa-admin-dns] dns-server ipv4 10.3.1.1
    [*SwitchA-nqa-admin-dns] destination-address url Server.com
    [*SwitchA-nqa-admin-dns] commit
    [~SwitchA-nqa-admin-dns] start now
    [*SwitchA-nqa-admin-dns] commit

  3. Verify the test result. Min/Max/Average Completion Time indicates the delay between the time when a DNS request packet is sent and the time when a DNS response packet is received. In this example, the delay is 208 ms.

    [~SwitchA-nqa-admin-dns] display nqa results test-instance admin dns
    NQA entry(admin, dns) :testflag is inactive ,testtype is dns
      1 . Test 1 result   The test is finished
       Send operation times: 1                Receive response times: 1             
       Completion:success                     RTD OverThresholds number:0           
       Attempts number:1                      Drop operation number:0               
       Disconnect operation number:0          Operation timeout number:0            
       System busy operation number:0         Connection fail number:0              
       Operation sequence errors number:0     RTT Status errors number:0            
       Destination ip address:10.3.1.1
       Min/Max/Average Completion Time: 208/208/208
       Sum/Square-Sum  Completion Time: 208/43264
       Last Good Probe Time: 2018-01-25 09:18:22.6
       Lost packet ratio: 0 %

Configuration Files

Switch A configuration file

#
sysname SwitchA
#
dns resolve
dns server 10.3.1.1
#
nqa test-instance admin dns
 test-type dns
 destination-address url Server.com
 dns-server ipv4 10.3.1.1
#
return
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Updated: 2019-04-20

Document ID: EDOC1100075365

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