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Alarm Handling

AR100, AR120, AR160, AR1200, AR2200, AR3200, and AR3600 V300R003

This document provides the trap description, attributes, parameters, impact on the system, possible causes, procedures, and references. This document provides a complete set of traps, through which intended readers are kept of the running status of the device so as to locate faults.

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MGMD_1. hwMgmdGMPInterfaceLimit

MGMD_1. hwMgmdGMPInterfaceLimit


MGMD/3/IFLIMIT:OID [oid] Membership report message is discarded because the interface-specific IGMP or MLD group membership limitation is exceeded. (GroupAddressType=[integer], SrcAddr=[binary], GrpAddr=[binary], Interface=[integer], LimitCnt=[integer], InterfaceName=[string], InstanceName=[string])

New members failed to join the IGMP group of an interface because the number of IGMP entries of the interface reached the limit.


Alarm ID Alarm Severity Alarm Type




Name Meaning


Indicates the MIB object ID of the alarm.


Indicates the inetAddressType of group address. The value can be:
  • 1: IPv4 address

  • 2: IPv6 address


Indicates the source address of the Report message.


Indicates the group address of the Report message.


Indicates the index of the current interface.


Indicates the number of entries on the current interface.


Indicates the name of the interface.


Indicates the instance name.

Impact on the System

After the number of entries of an interface reaches the limit, new members fail to join the interface-specific IGMP group, and corresponding entries cannot be established. Users in the shared network segment connected to the interface board where the current interface resides cannot receive the desired on-demand video programs.

Possible Causes

After the limit to the number of IGMP entries was set on an interface, when the number of interface-specific IGMP entries reached the limit, new members failed to join the IGMP group and the corresponding trap was generated.

Interface-specific IGMP entries include the (*,G) entries, (S,G) entries, and entries in the SSM-mapping table on the interface.


  1. Run the display igmp group interface interface-type interface-number verbose command to check whether the statistical number of IGMP entries on the interface is equal to or greater than the limit value.

    • If so, go to Step 2.

    • If not, go to Step 4.

  2. Check the network status and judge whether more IGMP entries can be maintained on the interface of the network.

    • If so, go to Step 3.

    • If not, go to Step 5. This situation indicates that multicast services in the network are saturated and therefore no more IGMP entries can be added. It is recommended to reduce multicast services or deploy a higher-performance device as an alternative to the current device.

  3. Run the igmp limit number command in the interface view to increase the limit value of interface-specific IGMP entries. Then, check whether the trap persists.

    • If so, go to Step 1.

    • If not, go to Step 5.

  4. Collect alarm information and configuration information, and then contact technical support personnel.
  5. End.

Related Information


Updated: 2019-03-06

Document ID: EDOC1100041475

Views: 102671

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