LS100-R3-MIB

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › LS100-R3-MIB

Category: Device Management

Description: Revision 3 SNMP MIB for LS100 series devices providing enhanced management and monitoring capabilities.

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What Is LS100-R3-MIB?

LS100-R3-MIB is a NEC-specific SNMP MIB (revision 3) for the NEC LS100 series switching node, extending the same "nec-mib" enterprise tree under necProductDepend with enhanced management objects. It exposes overall node operational status, a per-interface configuration table (physical type, revision, admin/oper status), fan health, and traffic-management parameters such as UPC window size and best-effort/guaranteed buffer sizing and thresholds. It is explicitly used for hardware and software status monitoring of the switch: nodeOperStatus reports whether the node is up, and nodeFanStatus reports cooling-fan health, both essential for catching hardware faults before they escalate to outages. As a vendor-specific product-dependent MIB it builds on NEC's shared enterprise MIB conventions rather than IETF standards, while paralleling the role standard IF-MIB objects play for interface status elsewhere. It is deployed on NEC LS100 series switching equipment within carrier or enterprise backbone networks, where LS100-R3-MIB SNMP monitoring is typically adopted as a revision upgrade path from LS100-R2-MIB deployments.

IPNetwork Monitor allows you to monitor SNMP objects defined in LS100-R3-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

  • NEC LS100 series switch

Monitoring Examples

An operator would poll nodeOperStatus and nodeFanStatus together to confirm the LS100 node is up and its cooling fans are healthy, since fan degradation is a common precursor to thermal-related outages. Walking nodeIfConfTable/nodeIfConfEntry by nodeIfConfIndex exposes each interface's physical type, revision, and status, revealing a port stuck in a bad nodeIfConfStatus. Comparing nodeGuaranteedBufferSize and nodeBestEffortBufferSize against nodeBestEffortBufferThreshold flags buffer exhaustion under heavy traffic load.

What Can Be Monitored

  • node operational status
  • fan status
  • per-interface physical type and status
  • UPC window size
  • best-effort buffer utilization and threshold
  • guaranteed buffer size
Imported Objects

From RFC-1212

OBJECT-TYPE

From RFC1155-SMI

Counter
enterprises
OIDs

RFC description

MIB for the Cisco/NEC LS100 ATM switch, supporting ATM (Asynchronous Transfer Mode) switching equipment management and monitoring. Originally designed for the LS100 V2.x software supporting network element configuration and status reporting.

Start monitoring NEC LS100 series switch 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 LS100-R3-MIB