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CX11x, CX31x, CX710 (Earlier Than V6.03), and CX91x Series Switch Modules V100R001C10 Configuration Guide 13

The documents describe the configuration of various services supported by the CX11x&CX31x&CX91x series switch modules The description covers configuration examples and function configurations.
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Maintaining MLD

Maintaining MLD

You can clear MLD group information , clear MLD packet statistics and monitor MLD running information.

Clearing MLD Group Information

Context

After MLD group entries are cleared, multicast members may fail to receive multicast data. Therefore, confirm your operation before clearing MLD group information.

Procedure

  • Run the following commands in the user view to clear multicast group entries that are dynamically generated on an interface.

    • reset mld group all

    • reset mld group interface interface-type interface-number { all | ipv6-group-address [ ipv6-group-mask-length ] [ ipv6-source-address [ ipv6-source-mask-length ] ] }

  • Run the following commands in the user view to clear multicast group entries established with MLD SSM mapping.

    • reset mld group ssm-mapping all

    • reset mld group ssm-mapping interface interface-type interface-number { all | ipv6-group-address [ ipv6-group-mask-length ] }

Clearing MLD Packet Statistics

Context

To view accurate statistics about MLD control messages within a period, clear the existing statistics first.

Statistics about MLD control packets cannot be restored after you clear them. Confirm your action before clearing the statistics.

Procedure

  • Run the reset mld control-message counters [ interface interface-type interface-number ] [ message-type { query | report } ] command in the user view to clear MLD control packet statistics.

Monitoring MLD Running Status

Context

To check the MLD running status during routine maintenance, run the following display commands in any view.

Procedure

  • Run the display mld group [ ipv6-group-address | interface interface-type interface-number ]* [ verbose ] command to check information about receiver hosts that dynamically join a multicast group.
  • Run the display mld group [ ipv6-group-address | interface interface-type interface-number ]* static [ verbose ] command to check information about members of a static MLD multicast group.
  • Run the display mld group [ ipv6-group-address | interface interface-type interface-number ]* ssm-mapping [ verbose ] command to check information about multicast group entries established with MLD SSM mapping.
  • Run the display mld interface [ interface-type interface-number | up | down ] [ verbose ] command to check the MLD configuration on an interface.
  • Run the display mld ssm-mapping { group [ ipv6-group-address ] | interface [ interface-type interface-number ] } command to check the configuration of MLD SSM mapping.
  • Run the display mld control-message counters [ interface interface-type interface-number ] [ message-type { query | report } ] command to check statistics about MLD messages on an interface.
  • Run the display mld invalid-packet [ interface interface-type interface-number | message-type { done | query | report } ]* command to check statistics about invalid MLD messages received by the device.
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Updated: 2019-12-13

Document ID: EDOC1000041694

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