CISCO-MLD-SNOOPING-MIB

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsCISCO-MLD-SNOOPING-MIB

Organization: Cisco Systems, Inc.

Last Updated: 2010-07-02

Category: Cisco Devices, IP and Core Protocols, VLAN and Bridging

Description: Manages Multicast Listener Discovery (MLD) snooping for IPv6 multicast traffic control on Cisco switches.

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What Is CISCO-MLD-SNOOPING-MIB?

CISCO-MLD-SNOOPING-MIB is a Cisco enterprise MIB for switches that implement Multicast Listener Discovery (MLD) snooping, the IPv6 analogue of IGMP snooping that restricts multicast traffic delivery to ports with interested listeners. It exposes configuration objects for snooping profiles, including profile name, storage type, minimum MLD version, associated IP address, robustness variable, and querier behavior such as internal querier enable and last-member-query timing. Its monitoring value centers on multicast-forwarding software state and configuration correctness rather than physical hardware, letting administrators confirm which profiles are active, whether an internal querier is enabled, and whether snooping parameters match expected multicast deployment design. It builds on and complements the IETF IGMP/MLD snooping model and is designed to work per virtual system or bridge domain via SNMP context, implying dependency on VLAN/L2VPN context conventions. It is deployed on Cisco Layer 2/Layer 3 switches carrying IPv6 multicast traffic, where CISCO-MLD-SNOOPING-MIB SNMP monitoring supports IPTV or other multicast-application environments.

IPNetwork Monitor allows you to monitor SNMP objects defined in CISCO-MLD-SNOOPING-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.

Supported Devices

  • Cisco Layer 2/Layer 3 switch

Monitoring Examples

An administrator would walk cmsProfileTable/cmsProfileEntry to check cmsProfileStatus and cmsProfileSnoopMinVersion for each configured profile, confirming the profile is active and enforcing the intended minimum MLD version. Reviewing cmsProfileInternalQuerier alongside cmsProfileLastMemberQueryInterval and cmsProfileLastMemberQueryCount would reveal whether the switch's internal querier timing matches expected leave-latency requirements. A profile with cmsProfileStatus showing inactive, or query intervals set far outside standard defaults, would explain excessive multicast traffic flooding or slow leave processing on a VLAN.

What Can Be Monitored

  • MLD snooping profile status
  • minimum MLD version enforced
  • internal querier enable state
  • robustness variable
  • last-member-query interval and count
  • associated IP address/type per profile
Imported Objects

From CISCO-SMI

ciscoMgmtOBJECT-IDENTITY

From INET-ADDRESS-MIB

InetAddress
InetAddressType

From SNMP-FRAMEWORK-MIB

SnmpAdminString

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Counter32
MODULE-IDENTITY
OBJECT-TYPE
Unsigned32

From SNMPv2-TC

RowStatus
StorageType
TEXTUAL-CONVENTION
TruthValue

How to Use in IPNetwork Monitor

Example using cmsSysIntQuerierRxGeneralQueries OID:

Select a Cisco Layer 2/Layer 3 switch (MLD snooping) as the target host to create a monitor — the SNMP service should be up and running on it. Click New Monitor, then check SNMP Custom on the Favorites tab, click Next, and confirm the host. On the next page, click Select... to open the built-in SNMP MIB Browser and type cmsSysIntQuerierRxGeneralQueries into the Find box to locate it in the OID tree, then select it and click OK. This object indicates the number of general queries received by the internal querier. On the monitor's Main parameters page you can set the target's SNMP port (default 161), credentials, polling interval, and other settings — see the SNMP Monitor help for details. On the State conditions and Alerting tabs, configure when the monitor should change state and trigger an alert; since this is a Counter32-type OID, Value bounds is the most useful condition here — trigger an alert if the counter increases sharply between polls relative to its normal baseline (in packets), since an unexpected spike often reflects a real change in traffic or activity. Click Finish to create the monitor; you can adjust any parameter later.
OIDs

RFC description

This MIB module defines objects that describe IGMP/MLD snooping for multicast group management and L2VPN bridge domain systems.

Start monitoring Cisco Layer 2/Layer 3 switch (MLD snooping) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.

Download CISCO-MLD-SNOOPING-MIB