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CLI-based Configuration Guide - Network Management and Monitoring

AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R009

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Licensing Requirements and Limitations for NQA

Licensing Requirements and Limitations for NQA

This section provides the points of attention when configuring NQA.

Involved Network Elements

None

Licensing Requirements

NQA is a basic feature of a router and is not under license control.

Feature Limitations

Pay attention to the following points when configuring NQA:

  • If an Eth-Trunk is configured as a mirrored port, its member ports cannot be configured as mirrored ports. To configure a member port as a mirrored port, delete it from the Eth-Trunk first.
    The frequency value must comply with the following rules:
    • In the DHCP, DNS, FTP, HTTP, or Trace test instance, the frequency value must be larger than the product of timeout and probe-count.

    • In the ICMP, SNMP, TCP, or UDP test instance, the frequency value must be larger than the product of intervaland probe-count.

    • In the Jitter test instance:

      frequency > probe-count × jitter-packetnum × interval + timeout

    • In the hardware-based Jitter test instance:

      frequency > probe-count × jitter-packetnum × interval + 6200 + (5 × timeout/3)

      The unit of 6200 is ms.

    • may be returned if the following condition is true: Interval at which the NQA test is automatically performed ≤ (Number of sent packets -1) x Interval + Timeout period + 1. For a test instance with jitter-packetnum configured, the number of sent packets is Probe-count x jitter-packetnum.

  • If multiple outbound interfaces exist and you want to trace the next hop or remote tracing address of one outbound interface using NQA, you must specify source-interface. Otherwise, network flapping occurs.
  • If a large number of NQA test instances are configured, run the start delay command to specify a delay in performing NQA test instances and then start the NQA test instances. In this way, these NQA test instances can be concurrently executed in batches. You are advised to execute about 200 NQA test instances concurrently at most.
  • When the hardware forwarding engine on an LPU is not configured to send packets, you need to run the packet-type command on the client to configure CPCAR values.
  • When the hardware forwarding engine on an LPU is configured to send packets, run the interval milliseconds command to set the interval for sending packets to less than 1 second.
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Updated: 2019-05-17

Document ID: EDOC1000174072

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