TN-IGMP-SNOOPING-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › TN-IGMP-SNOOPING-MIB

Organization: Nokia

Last Updated: 2015-05-08

Category: Multicast, Nokia Carrier Ethernet

Description: Manages Nokia carrier Ethernet IGMP snooping group membership and port filtering.

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What Is TN-IGMP-SNOOPING-MIB?

TN-IGMP-SNOOPING-MIB is a Nokia (formerly Alcatel-Lucent) proprietary MIB for the 7x50 SR-series routers, managing IGMP snooping and Multicast VLAN Registration (MVR) within TLS (VPLS) services to control multicast group membership on Layer-2 service instances. It exposes per-service configuration objects covering snooping admin state, general-query interval, querier robustness count, and MVR-specific settings like MVR admin state and policy. Its monitoring value is chiefly about software/feature status: tnTlsIgmpSnpgCfgAdminState and tnTlsIgmpSnpgCfgMvrAdminState confirm whether snooping and MVR are actually enabled on a given service, a common cause of missing multicast/IPTV delivery when left disabled, while tnTlsIgmpSnpgCfgLastChangeTime flags recent reconfiguration that could explain a multicast-delivery incident. It builds on IETF IGMP/MLD snooping concepts, adapted to Nokia's VPLS/TLS service model, rather than implementing a standard MIB directly. It is deployed on Nokia 7x50 routers delivering multicast services such as IPTV over carrier Ethernet/VPLS infrastructure, where TN-IGMP-SNOOPING-MIB SNMP monitoring confirms snooping and MVR stay enabled on each service.

IPNetwork Monitor allows you to monitor SNMP objects defined in TN-IGMP-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

  • Nokia (Alcatel-Lucent) 7x50 SR-series routers/service switches

Monitoring Examples

An administrator checks tnTlsIgmpSnpgCfgAdminState on a tnTlsIgmpSnpgConfigEntry to confirm IGMP snooping is enabled for a given TLS service, and reviews tnTlsIgmpSnpgCfgGenQueryIntvl and tnTlsIgmpSnpgCfgRobustCount to verify querier tuning matches the rest of the multicast domain. tnTlsIgmpSnpgCfgMvrAdminState and tnTlsIgmpSnpgCfgMvrPolicy are checked to confirm Multicast VLAN Registration is correctly delivering an IPTV channel lineup to subscriber ports. A recent tnTlsIgmpSnpgCfgLastChangeTime alongside a customer complaint about missing channels points to a configuration change as the root cause.

What Can Be Monitored

  • IGMP snooping admin state per service
  • general query interval and querier robustness count
  • MVR (multicast VLAN registration) admin state and policy
  • query source address configuration
  • last configuration change time
Imported Objects

From SNMPv2-CONF

MODULE-COMPLIANCE
NOTIFICATION-GROUP
OBJECT-GROUP

From SNMPv2-SMI

Counter32
Integer32
IpAddress
MODULE-IDENTITY
NOTIFICATION-TYPE
OBJECT-TYPE
TimeTicks
Unsigned32

From SNMPv2-TC

DisplayString
RowStatus
TEXTUAL-CONVENTION
TimeStamp
TruthValue

From TN-SAP-MIB

tnSapEncapValueOBJECT-TYPE
tnSapPortIdOBJECT-TYPE

From TN-SERV-MIB

SdpId
tnSvcIdOBJECT-TYPE

From TN-TC-MIB

TItemDescription
TPolicyStatementNameOrEmpty
TmnxAdminState
TmnxEncapVal
TmnxIgmpGroupFilterMode
TmnxIgmpGroupType
TmnxIgmpVersion
TmnxPortID
TmnxServId
TmnxVcIdOrNone

From TROPIC-GLOBAL-REG

tnSRMIBModulesOBJECT-IDENTITY
tnSRNotifyPrefixOBJECT-IDENTITY
tnSRObjsOBJECT-IDENTITY

From TROPIC-SYSTEM-MIB

tnSysSwitchIdOBJECT-TYPE

How to Use in IPNetwork Monitor

Example using tnSapIgmpSnpgGrpNumSrc OID:

Select a Nokia SR-series routers/service switch 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 tnSapIgmpSnpgGrpNumSrc into the Find box to locate it in the OID tree, selecting the specific row/instance you want to monitor since this is a table column, then select it and click OK. The value of the object tnSapIgmpSnpgGrpNumSrc indicates the number of IGMP multicast source corresponding to this IGMP multicast group entry. 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, 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

IGMP snooping feature management for Nokia 7x50 network devices.

Start monitoring Nokia SR-series routers/service switches 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 TN-IGMP-SNOOPING-MIB