SYMMENTITYPHYSICALEXT

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › SYMMENTITYPHYSICALEXT

Organization: Symmetricom

Last Updated: 2016-06-15

Category: Timing and Synchronization

Description: Extends Symmetricom physical entity attributes with platform-specific hardware component details.

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What Is SYMMENTITYPHYSICALEXT?

SYMMENTITYPHYSICALEXT is a Symmetricom (a timing/synchronization equipment vendor, later part of Microsemi) proprietary MIB that extends the standard ENTITY-MIB's physical-entity table with additional platform-specific hardware component attributes for Symmetricom timing/clock devices. Although no object names were supplied in this dataset, an entity-extension MIB of this kind typically adds vendor-specific fields such as component serial number, hardware revision, or part-number detail layered on top of each entPhysicalIndex entry. Its purpose is squarely hardware-inventory and status monitoring: it lets an administrator retrieve richer identity/version detail for each physical component (chassis, module, oscillator, power supply) in a timing device beyond what the standard ENTITY-MIB alone provides. It explicitly depends on and extends the IETF standard ENTITY-MIB (RFC 6933/4133), indexing its own objects by the same entPhysicalIndex. It is deployed on Symmetricom precision timing/synchronization equipment (e.g., GPS-disciplined clocks, NTP/PTP timing servers) used in telecom and financial-services environments requiring accurate time distribution. Engineers can download the SYMMENTITYPHYSICALEXT file directly to load it into their MIB browser.

IPNetwork Monitor allows you to monitor SNMP objects defined in SYMMENTITYPHYSICALEXT. 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

  • Symmetricom precision timing/synchronization device (e.g., GPS-disciplined clock, NTP/PTP server)

Monitoring Examples

No sample object names were available for this module, so specific identifiers cannot be provided; based on its role as an ENTITY-MIB extension, an administrator would typically correlate entPhysicalIndex values from the standard ENTITY-MIB with this module's extension objects to pull additional hardware detail - such as component revision or part number - for a specific module or oscillator in the timing chassis. This would be used, for example, to confirm the exact hardware revision of an installed oscillator module when diagnosing a timing-accuracy issue.

What Can Be Monitored

  • physical component hardware revision/identification (extended)
  • component part/serial number detail (extended)
Imported Objects

From ENTITY-MIB

entPhysicalEntryOBJECT-TYPE
entPhysicalIndexOBJECT-TYPE

From IF-MIB

ifIndexOBJECT-TYPE
ifNumberOBJECT-TYPE

From SNMPv2-CONF

MODULE-COMPLIANCE
OBJECT-GROUP

From SNMPv2-SMI

MODULE-IDENTITY
OBJECT-IDENTITY
OBJECT-TYPE

From SNMPv2-TC

DisplayString
TEXTUAL-CONVENTION

From SYMM-COMMON-SMI

symmEntPhysicalExtensionOBJECT-IDENTITY
OIDs

RFC description

Symantec vendor-private MIB extending entity physical table for hardware inventory and monitoring.

Start monitoring Symmetricom precision timing/synchronization device (extended physical-component identity/inventory) 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 SYMMENTITYPHYSICALEXT