Which PROFINET services will replace SNMP? How will network monitoring work in v2.5?

[Webinar_Question]

Which PROFINET services will replace SNMP? How will network monitoring work in v2.5?

[ACW]

Which PROFINET services will replace SNMP? How will network monitoring work in v2.5?

In PROFINET V2.5, traditional SNMP-based network monitoring is no longer used. Instead, its functionality is replaced by native PROFINET mechanisms built around record-based services and standardized diagnostics.
All interface diagnostics, device status information, and network-related data are accessed through acyclic PROFINET Read/Write Record services. These records provide structured and semantically well-defined information for ports, links, and devices, replacing the need for SNMP MIBs and external polling mechanisms. In addition, PROFINET alarms introduce an event-driven concept, allowing the system to report changes and faults immediately rather than relying on continuous polling.
Network monitoring therefore becomes fully integrated into the PROFINET communication model. Controllers and engineering tools use the same protocol mechanisms for configuration, diagnostics, and operation, ensuring consistency and deterministic behavior. Detailed network information such as link status, port counters, and error conditions is retrieved on demand via records, while critical events are communicated asynchronously via alarms.
Network discovery in V2.5 is also realized using PROFINET-native mechanisms. The discovery of devices, ports, and their interconnections is based on record-based topology information combined with LLDP data within the PROFINET framework. The exact procedure is defined in the updated Topology Discovery Guideline, which specifies how topology data is collected, correlated, and provided to controllers and engineering systems.
Overall, SNMP is effectively replaced by a unified approach consisting of PROFINET records for data access, alarms for event handling, and standardized topology mechanisms for discovery, resulting in a fully integrated, deterministic, and engineering-friendly network monitoring solution."