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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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Configuring the NQA MTrace Test to Check the RPF Path from the Multicast Source to the Querier

Configuring the NQA MTrace Test to Check the RPF Path from the Multicast Source to the Querier


To check the Reverse Path Forwarding (RPF) path from the multicast source to the querier, you can perform the NQA MTrace test.

By performing the MTrace test, you can obtain the possible transmission path of multicast packets. During the test, actual multicast data flows are not required.

The MTrace test can be used in multicast troubleshooting and routine maintenance to locate the faulty nodes and reduce configuration errors.


  1. Run system-view

    The system view is displayed.

  2. Run nqa test-instance admin-name test-name

    An NQA test instance is created and the test instance view is displayed.

  3. Run test-type mtrace

    The test type is set to MTrace.

  4. Run mtrace-source-address ipv4 ip-address

    The address of the multicast source is specified.

  5. (Optional) Run vpn-instance vpn-instance-name

    The VPN instance name is configured.

  6. (Optional) Adjust the performance of the NQA MTrace test instance.

    • Run ttl number

      The TTL value, that is, the maximum hops traced in max-hop mode is set for the IGMP-Tracert-Request packet.

    • Run tracert-livetime first-ttl first-ttl max-ttl max-ttl

      The maximum hops traced in hop-by-hop mode is set. first-ttl must be set to 1.

    • Run mtrace-response-address ipv4 ip-address [ ttl value ]

      The destination IP address and TTL of the IGMP-Tracert-Response packet are set.

    • Run description string

      A description is configured for the test instance.

    • Run frequency interval

      The test period is set for the NQA test instance.

    • Run timeout time

      The timeout period of a probe is set for the NQA test instance.

    • Run probe-count number

      The number of probes in each test is set.

    • Run records result number

      The maximum number of result records is set for the NQA test instance.

    • Run agetime hh:mm:ss

      The aging time is set for the NQA test instance.

Updated: 2019-10-21

Document ID: EDOC1000178113

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