INXNMM-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

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Category: Device Management

Description: InX network management module (NMM) MIB providing SNMP objects for card-level management in modular networking equipment.

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What Is INXNMM-MIB?

INXNMM-MIB is described as a network management module (NMM) MIB for card-level management in modular networking equipment, but the sample objects available for it are actually IEEE 802.3 Ethernet-like ('dot3') MAC-layer objects — a dot3 table of per-interface entries covering MAC sublayer status, multicast receive enablement, alignment errors, and FCS (frame check sequence) errors, plus a parallel transmit-side dot3Tx table tracking single-collision frame counts. This suggests the module is built on top of, or closely mirrors, the standard IEEE 802.3/EtherLike-MIB object model to expose per-card, per-port Ethernet MAC statistics within a modular chassis (an InX Networks NMM card). Such data is used to monitor the hardware/link-layer health of Ethernet ports on a management card — rising alignment or FCS error counts point to a cabling, duplex-mismatch, or physical-layer fault, while collision counts indicate contention on a shared segment. Given its object naming, it appears to depend on or closely parallel the IETF EtherLike-MIB (dot3 objects, RFC 2665) rather than defining an entirely proprietary statistics model. It would be deployed on InX Networks modular chassis equipment (e.g., multiplexers or aggregation platforms), where INXNMM-MIB SNMP monitoring gives per-card Ethernet interface health central visibility.

IPNetwork Monitor allows you to monitor SNMP objects defined in INXNMM-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

  • Interlan (Micom-Interlan) NMM network management module, modular chassis Ethernet card

Monitoring Examples

An administrator would poll dot3Table/dot3Entry, keyed by dot3Index, to read dot3AlignmentErrors and dot3FCSErrors on a given port, flagging a rising error count as a likely cabling or physical-layer problem. dot3MulticastReceiveEnabled shows whether multicast reception is enabled on that MAC, and dot3MACSubLayerStatus reports the operational state of the MAC sublayer itself. On the transmit side, dot3TxTable/dot3TxEntry's dot3TxSingleCollisionFrames reveals contention-related retransmissions, useful for diagnosing a half-duplex or shared-segment issue.

What Can Be Monitored

  • MAC sublayer status per port
  • alignment error count
  • FCS error count
  • multicast receive enable state
  • single collision frame count
Imported Objects

From RFC1155-SMI

Counter
Gauge
IpAddress
NetworkAddress
OBJECT-TYPE
TimeTicks

From SNMPv2-TC

DisplayString
OIDs

RFC description

Manages Racal Datacom INX-NMM network management module with Ethernet interface and MAC layer configuration.

Start monitoring Interlan (Micom-Interlan) NMM Ethernet management card 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 INXNMM-MIB