PRTG 21.0.x supports over 200 sensor types. Notable additions/changes:

Analyzes header data passing through a local network card to categorize traffic types without requiring dedicated flow-enabled hardware. 5. Deployment and Installation Steps

PRTG organizes your network into a tree hierarchy: . Use inheritance to configure credentials (like SNMP community strings or Windows passwords) at the Group level. This ensures new devices added to that group automatically inherit the correct security settings. Tune Refresh Intervals

A chaotic device tree makes managing alerts difficult. PRTG uses a hierarchical structure where configurations, credentials, and notification schedules pass down from parent groups to child devices.

Version 21.0.x replaced legacy iframes with a modern AJAX dashboard. Improvements:

This comprehensive guide explores everything you need to know about the 21.0.x release cycle, from core features to deployment strategies and performance tuning. 1. What is PRTG Network Monitor 21.0.x?

At 03:14 the alert pulsed amber: “Packet loss rising — Core Switch 3.” The map lit a thin orange thread from the primary ISP to the core, and PRTG’s built-in root-cause hints suggested a flaring BGP neighbor. Mara toggled into the sensor’s historic chart. The spike began exactly when a new firmware rollout hit that vendor’s devices across multiple clients. She opened a quick ticket and assigned it to DevOps, but the alert kept climbing to red.

The 21.0.x release train optimizes performance while expanding the platform’s security posture and cloud footprint. Improved Security and TLS 1.3 Support

storage engine began testing during this period, aimed at increasing data processing speed for large-scale installations with thousands of sensors. Getting Started with Version 21.0.x Release Notes for PRTG 21 - Paessler

Where possible, substitute WMI sensors with SNMP or PRTG Windows Performance Counter sensors, which use significantly less CPU and memory. Optimize Polling Intervals Not every metric needs to be checked every 60 seconds.