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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. hwMgmdGMPGlobalLimit

MGMD_1. hwMgmdGMPGlobalLimit


MGMD/3/INSTLIMIT:OID [oid] Membership report message is discarded because the global IGMP or MLD group membership limitation is exceeded in this instance. (GroupAddressType=[integer], SrcAddr=[binary], GrpAddr=[binary], LimitCnt=[integer], InstanceName=[string])

New members failed to join the IGMP group because the number of global IGMP entries in a single instance 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 limit of global IGMP entries in the current instance.


Indicates the instance name.

Impact on the System

After the number of global entries of a single instance reaches the limit, new members fail to join the IGMP group, and corresponding entries cannot be established. In this case, terminal users cannot receive the desired on-demand video programs.

Possible Causes

After the limit to the number of global IGMP entries in a single instance was set on the router, when the number of global IGMP entries reached the limit, new members failed to join the IGMP group and the corresponding trap was generated.

Global IGMP entries include the (*,G) entries, (S,G) entries, and entries in the SSM-mapping table in the current instance.


  1. Run the display igmp [ vpn-instance vpn-instance-name ] group verbose command to check whether the statistical number of IGMP entries is equal to or greater than the limit value in the current instance.

    • 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 in the current instance in 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 limit number command in the IGMP view to increase the limit value of the IGMP entries in the current instance. 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: 101498

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