Documentation forNetwork Performance Monitor
Monitoring network performance is a key capability of SolarWinds Observability Self-Hosted (formerly Hybrid Cloud Observability) and is available in the Essentials edition. Network Performance Monitor (NPM) is also available in a standalone module.

NPM 2025.1.1 release notes

Release date: March 20, 2025

Network Performance Monitor 2025.1.1 is a service release providing bug and security fixes for release 2025.1. For information about the 2025.1 release, including EOL notices and upgrade information, see Network Performance Monitor 2025.1 Release Notes.

For information about the SolarWinds Platform 2025.1 release, including EOL notices and upgrade information, see SolarWinds Platform 2025.1 Release Notes.

Fixes

Last updated:

NPM 2025.1.1 includes the fixes in version 2025.1.1 of the SolarWinds Platform.

Case number Description
00956016, 01808562

If you have a high number of Access Points (APs), you no longer experience intermittent, slow web UI performance caused by excessive query executions on the Wireless Index table. This inefficiency has been optimized, resulting in improved performance, particularly on Wireless Monitoring pages.
01824392, 01812117, 01788821, 01821705, 01850355, 01828593, 01886694

The SolarWinds.Topology.Calculator.exe process no longer fails with an unhandled exception during the removal of duplicate connections. Redundant Layer 3 (L3) connections are no longer stored in the database, increasing SQL Server load and extending topology calculation processing times.

The setting RemoveRedundancyMaxThreads in SolarWinds.Topology.Calculatorx64.exe.config has been updated to improve stability and prevent failures.
01781557

Interfaces with InterfaceIndex=-1 are no longer polled, resolving remapping issues. The fix applies to SNMPv2, SNMPv3, and WMI interfaces, improving accuracy and preventing incorrect polling requests.
01808639, 01813448, 01811282, 01765095

In environments with multiple F5 nodes, the F5 API Status poller is no longer enabled without the required settings (F5.API.CredentialID, F5.API.Port, F5.API.UseSsl) configured in NodeSettings, causing repeated errors in the Collector logs and leading to log flooding and potential disruptions in F5 monitoring.

The F5 API Status poller is only enabled when the required settings are present, preventing log errors and improving stability.

Legal notices

© 2025 SolarWinds Worldwide, LLC. All rights reserved.

This document may not be reproduced by any means nor modified, decompiled, disassembled, published or distributed, in whole or in part, or translated to any electronic medium or other means without the prior written consent of SolarWinds. All right, title, and interest in and to the software, services, and documentation are and shall remain the exclusive property of SolarWinds, its affiliates, and/or its respective licensors.

SOLARWINDS DISCLAIMS ALL WARRANTIES, CONDITIONS, OR OTHER TERMS, EXPRESS OR IMPLIED, STATUTORY OR OTHERWISE, ON THE DOCUMENTATION, INCLUDING WITHOUT LIMITATION NONINFRINGEMENT, ACCURACY, COMPLETENESS, OR USEFULNESS OF ANY INFORMATION CONTAINED HEREIN. IN NO EVENT SHALL SOLARWINDS, ITS SUPPLIERS, NOR ITS LICENSORS BE LIABLE FOR ANY DAMAGES, WHETHER ARISING IN TORT, CONTRACT OR ANY OTHER LEGAL THEORY, EVEN IF SOLARWINDS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

The SolarWinds, SolarWinds & Design, Orion, and THWACK trademarks are the exclusive property of SolarWinds Worldwide, LLC or its affiliates, are registered with the U.S. Patent and Trademark Office, and may be registered or pending registration in other countries. All other SolarWinds trademarks, service marks, and logos may be common law marks or are registered or pending registration. All other trademarks mentioned herein are used for identification purposes only and are trademarks of (and may be registered trademarks) of their respective companies.