All MIBs › TPLINK-DDMSTATUS-MIB
Organization: TPLINK
Last Updated: 2009-08-27
Category: Optical Transceiver Diagnostics
Description:
Monitors TP-Link switch DDM optical transceiver real-time temperature, voltage, and power status.
Imported Objects
From RFC1213-MIB
| ifIndex |
From SNMPv2-SMI
| MODULE-IDENTITY | |
| OBJECT-TYPE |
From SNMPv2-TC
| DisplayString |
From TPLINK-DDMMANAGE-MIB
| tplinkDdmManageMIBObjects | OBJECT-IDENTITY |
What Is TPLINK-DDMSTATUS-MIB?
TPLINK-DDMSTATUS-MIB is a TP-Link private MIB that exposes Digital Diagnostic Monitoring (DDM) data for optical transceivers (SFP/SFP+ modules) installed in TP-Link switches. It provides real-time readings of each transceiver's operating temperature, supply voltage, bias current, and transmit/receive optical power, mirroring the kind of DDM data an optic reports internally per SFF-8472. Its core purpose is hardware health monitoring - detecting an overheating, under-powered, or degrading optical module by tracking these real-time electrical and optical parameters per port, which can predict a link failure before it happens. It is conceptually aligned with (though independently implemented from) the SFF-8472 DDM convention and typically complements standard IF-MIB interface data for the corresponding port. It is deployed on TP-Link managed switches equipped with SFP/SFP+ optical uplink ports in enterprise or campus network environments, where TPLINK-DDMSTATUS-MIB SNMP monitoring helps predict optic failures before a link actually goes down.
IPNetwork Monitor allows you to monitor SNMP objects defined in TPLINK-DDMSTATUS-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.
What Can Be Monitored
- transceiver temperature
- transceiver supply voltage
- transceiver bias current
- transmit optical power
- receive optical power
Supported Devices
- TP-Link managed switch with SFP/SFP+ optical transceiver ports
Monitoring Examples
No specific table/object names were present in the provided sample, so a concrete polling example is not grounded in real identifiers; based on the module description, an administrator would poll the per-port DDM status data to read a transceiver's real-time temperature, supply voltage, and optical transmit/receive power, comparing them against vendor-specified warning/alarm thresholds. A steadily rising temperature or a receive power level dropping toward the module's sensitivity floor would indicate a failing optic or degrading fiber link before the port actually goes down.
OIDs
| OID symbolic | OID numeric | Type | Access | Description |
|---|---|---|---|---|
| ddmStatus | 1.3.6.1.4.1.11863.6.96.1.7 | The view of DDM status. | ||
| ddmStatusTable | 1.3.6.1.4.1.11863.6.96.1.7.1 | not-accessible | A table that is used to view the DDM status for specific ports on the Switch. | |
| ddmStatusEntry | 1.3.6.1.4.1.11863.6.96.1.7.1.1 | not-accessible | A list of information for every port. | |
| STR ddmStatusPort | 1.3.6.1.4.1.11863.6.96.1.7.1.1.1 | DisplayString | read-only | This object indicates the port number. |
| STR ddmStatusTemperature | 1.3.6.1.4.1.11863.6.96.1.7.1.1.2 | DisplayString | read-only | This object indicates the temperature of the port. |
| STR ddmStatusVoltage | 1.3.6.1.4.1.11863.6.96.1.7.1.1.3 | DisplayString | read-only | This object indicates the voltage of the port. |
| STR ddmStatusBiasCurrent | 1.3.6.1.4.1.11863.6.96.1.7.1.1.4 | DisplayString | read-only | This object indicates the bias current of the port. |
| STR ddmStatusTxPow | 1.3.6.1.4.1.11863.6.96.1.7.1.1.5 | DisplayString | read-only | This object indicates the tx power of the port. |
| STR ddmStatusRxPow | 1.3.6.1.4.1.11863.6.96.1.7.1.1.6 | DisplayString | read-only | This object indicates the rx power of the port. |
| STR ddmStatusDataReady | 1.3.6.1.4.1.11863.6.96.1.7.1.1.7 | DisplayString | read-only | This object indicates whether SFP is operational or not. |
| STR ddmStatusLossSignal | 1.3.6.1.4.1.11863.6.96.1.7.1.1.8 | DisplayString | read-only | This object indicates whether local SFP reports signal loss or not. |
| STR ddmStatusTxFault | 1.3.6.1.4.1.11863.6.96.1.7.1.1.9 | DisplayString | read-only | This object indicates whether remote SFP reports signal loss or not. |
RFC description
Monitors DDM (Digital Diagnostics Monitoring) status including temperature, voltage, and optical power on TP-Link switch ports.
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