Network Management

UPS Poller missing after Schneider firmware upgrade when SNMP firmware returns non-standard Manufacture Date format

Schneider PCU devices running SNMP management card firmware v3.3.0.x may fail discovery inventory and subsequent polling in SolarWinds Self-Hosted Platform. The issue occurs because the device returns the Manufacture Date OID in an unexpected string format, causing the PCU inventory step to fail and preventing the node from being identified as a PCU.

First published date

1/12/2026 5:45 PM

Last published date

1/12/2026 5:45 PM

Overview

SolarWinds relies on the Manufacture Date OID '1.3.6.1.4.1.318.1.1.1.1.2.2.0' as a required attribute to determine whether a discovered SNMP node should be identified as a UPS (Power Control Unit).

Historically, all APC UPS devices returned this value in a consistent numeric date format. Newer Schneider firmware versions have changed this format to a string-based representation, which causes the UPS detection logic to fail during the inventory step.

Because this value is mandatory for UPS classification, the failure prevents SolarWinds from discovering the UPS Poller and appears to be missing in the List Resources.

 

Product section

Network Performance Monitor

Cause

The Schneider SNMP Management Card firmware returns the Manufacture Date in a new, unsupported date format that differs from what SolarWinds expects when evaluating UPS devices.Solarwinds Self-Hosted Platform expects the format to be in dd/mm/yyyy, as it has been for all APCs from various vendors.

Resolution

Recommended Actions:

Verify the Manufacture Date OID Value: You can use an SNMP walk to check the value returned by the device:

Please refer: SolarWinds SNMP Walk: A new tool for collecting SNMP MIB walks in the SolarWinds Platform

Expected format:

.1.3.6.1.4.1.318.1.1.1.1.2.2.0 = STRING: "07/19/11"


  1. 

    Contact Schneider / APC Support
    

    • 

      • 

        Configuring the Manufacture Date format on the device to conform with the dd/mm/yyyy format.
        

      • 

        Releasing a firmware update to restore compatibility
        

      

    

     
    

  2. 

    Firmware Downgrade (if feasible)
    

    • 

      If operationally acceptable, reverting to a prior firmware version that returns the date in the expected format may restore UPS discovery and polling functionality.
      

    

  3. 

    Monitor SolarWinds Self-Hosted Platform Updates
    

    • 

      SolarWinds may address this issue in a future release. Keep track of release notes for updates that improve PCU date format handling.
      

    



  • At this time, there is no workaround within SolarWinds Self-Hosted Platform to parse the new Manufacture Date format. Nodes affected by this issue will not be inventoried as UPS devices until the format is corrected or supported.