One possible cause of this issue is that the user account has the No Reports limitation applied to it. This limitation prevents the user from accessing any reports in the Orion Console, regardless of the report group or category. To resolve this issue, you need to edit the user account and change the report limitation to either No Limitation (to allow access to all reports) or a specific report limitation category (to allow access to only the reports with that category). You can also create custom report limitation categories and assign them to the reports and users as needed.  References :  Restrict who can access reports in the SolarWinds Platform ,  Define what users can access and do in the SolarWinds Platform .

PerfStack is a feature of the Orion Platform that allows you to compare and correlate performance data from multiple SolarWinds products and entities in a single view 1 .  You can drag and drop metrics from different sources, such as NPM, SAM, NCM, NTA, and more, and create custom dashboards that help you troubleshoot complex network issues 2 .  PerfStack can also show historical data and baselines for comparison 3 .  References :  1 : Network Performance Monitor Administrator Guide - Use PerfStack to troubleshoot issues  2 : Network Performance Monitor Getting Started Guide - Troubleshoot your network with PerfStack  3 : SolarWinds Certified Professional Program - Diagnostics and Troubleshooting Exam Study Guide - Use PerfStack to troubleshoot issues

https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-create-performance-analysis-charts.htm

The SNMP trap service is responsible for receiving, decoding, displaying, and storing the SNMP trap messages in the Log Analyzer database. If the service is not running, you will not see the messages in the Orion Web Console. You can verify the status of the service by using the Orion Service Manager or the Windows Services console. You can also restart the service if needed. The other options are not relevant for troubleshooting the cause of missing SNMP trap messages.  References :

Monitor SNMP traps

Troubleshoot SNMP traps

Orion Service Manager

https://documentation.solarwinds.com/en/success_center/orionplatform/content/core-importing-mib-pollers-sw512.htm

The Universal Device Poller (UnDP) is a feature of SolarWinds NPM that allows you to create custom monitors for almost any statistic provided by SNMP based on its Management Information Base (MIB) and object identifier (OID). An OID is a unique identifier for a variable that can be polled or set via SNMP. The UnDP retrieves management data in the OID format from the devices that support SNMP. The other formats (WMI, XML, ANSI 1) are not used by the UnDP.  References :

Monitor custom statistics based on OIDs with Universal Device Pollers

NPM Universal Device Pollers

You can make bulk changes to nodes in NPM using the  Manage Nodes  feature. This allows you to select multiple nodes and edit their properties, such as the polling method, the polling frequency, the SNMP credentials, the custom properties, and more.  You can also use the  Edit Nodes  feature to assign or unassign pollers to nodes, such as the Universal Device Poller (UnDP), the Hardware Health Poller, the Wireless Poller, and more 1 2 .  References :  1 : Change the polling method for a node 3 ,  2 : Manage pollers using Device Studio 4

To detect duplex mismatches, you need to meet the following requirements 1 :

The nodes must be monitored by NPM.

The nodes must be in the up state during the discovery.

The nodes must support topology and be interconnected.

Duplex of both devices must be identified as full or half.

The Possible Duplex Mismatches widget must be enabled on the node details view.

You do not need to ensure corresponding values for each interface are different, as this is the result of a duplex mismatch, not a requirement for detection.  In fact, you should unify the duplex mode configuration on neighboring interfaces to avoid mismatches 1 .