SONET-MIB

MIB Reference — IPNetwork Monitor · Updated September 09, 2026

All MIBsSONET-MIB

Organization: IETF AToM MIB Working Group

Last Updated: 2003-08-11

Category: Network Interfaces

Description: Defines managed objects for managing SONET/SDH interfaces, including line, section, and path-level configuration and performance monitoring.

IPNetwork Monitor uses several OIDs from this MIB in network discovery and polling the applicable devices. Start monitoring SONET-MIB with a free 30-day trial of IPNetwork Monitor.

What Is SONET-MIB?

SONET-MIB is an IETF standards-based module (RFC 3592) for managing SONET/SDH optical transmission interfaces, covering the section, line, and path layers of the SONET/SDH hierarchy. It exposes both configuration objects (interface type, framing mode) and performance/fault objects such as line/section/path current and interval performance-monitoring counters and alarm/defect indications. In monitoring terms it tracks the hardware/transmission health of SONET/SDH links, revealing error-rate counters, loss-of-signal or loss-of-frame conditions, and other physical-layer fault indications rather than general compute resources like CPU or memory. It builds on and is used alongside the IETF IF-MIB, since SONET interfaces register as entries in the standard interfaces table. Effective SONET-MIB SNMP monitoring is deployed on SONET/SDH transport equipment and router/switch line cards in carrier and enterprise optical transport networks.

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

  • vendor-neutral, standards-based MIB, not tied to a specific manufacturer — applies to SONET/SDH transport equipment and optical interface line cards

Monitoring Examples

An operator would poll the SONET section- and line-current performance tables for error-second and severely-errored-second counts, and check the medium table for configured line type. A rising count of coding violations or an active loss-of-signal defect flag in these tables would indicate a degrading or failed optical link. Because no concrete sample object names were supplied for this module, table names are given generically based on the well-documented RFC 3592 structure rather than exact source text.

What Can Be Monitored

  • SONET section/line/path error counters
  • loss-of-signal/loss-of-frame defects
  • interface framing configuration
  • performance-monitoring interval statistics
Imported Objects

From IF-MIB

ifIndexOBJECT-TYPE

From PerfHist-TC-MIB

PerfCurrentCount
PerfIntervalCount

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

Integer32
MODULE-IDENTITY
OBJECT-TYPE
transmission

From SNMPv2-TC

DisplayString
TruthValue
OIDs

RFC description

SONET/SDH synchronous optical network MIB (RFC 3592) for optical transport management.

Start monitoring vendor-neutral, standards-based MIB, SONET/SDH transport equipment and optical interface line cards (section/line/path performance/fault status) 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 SONET-MIB