Overview
ISO/IEC/IEEE 8802-1Q:2024/Amd 36:2025 is an international standard amendment that defines YANG data models to enhance the management of local and metropolitan area networks, specifically for bridges and bridged networks. Published by ISO in collaboration with IEC and IEEE, this amendment focuses on providing standardized YANG models for scheduled traffic, frame preemption, and per-stream filtering and policing (PSFP). The aim is to improve the configuration and operational control of time-sensitive networking (TSN) functions, enabling more robust, interoperable, and automated network management.
YANG (Yet Another Next Generation) models are essential for describing configuration, state data, and operational parameters in data networking environments. By standardizing YANG models in the context of IEEE 802.1Q bridges, this amendment supports advanced features critical for deterministic networking, such as real-time traffic scheduling and exact resource management.
Key Topics
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YANG Data Models Integration
The amendment introduces YANG modules that define configuration and operational state models for:
- Scheduled Traffic
- Frame Preemption
- Per-Stream Filtering and Policing
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Bridge and Stream Management
Enhancements are included for managing bridge ports and stream-specific parameters through new table structures and managed object definitions. The Gate Parameter Table and Stream Parameter Table are updated to include cycle and interval management for streams and scheduled traffic.
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Management Information Base (MIB)
Updates to IEEE8021-ST-MIB and IEEE8021-PSFP-MIB provide expanded support for the reporting and monitoring of new YANG-managed parameters, including supported cycle and interval values.
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Time-Sensitive Networking (TSN) Support
Clause 46 focuses on the configuration information necessary for TSN, including scheduled traffic flows and talker/listener roles essential in industrial and professional AV networks.
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Security Considerations
The amendment contains dedicated sections with security considerations for each new YANG data model, ensuring safe configuration and management practices.
Applications
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Industrial Automation Networks
Scheduled traffic and per-stream policing are vital for environments where deterministic and low-latency communication are required, such as factory automation and process control networks.
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Professional Audio/Video (AV) Systems
Frame preemption and scheduled traffic management help meet the strict timing requirements of broadcast and live performance networks, ensuring uninterrupted, synchronized AV transport.
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Large-Scale Enterprise and Metro Networks
Operators can leverage standardized YANG modules to automate configuration, perform detailed monitoring, and enforce service-level agreements (SLAs) across various network segments, improving reliability for mission-critical applications.
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Interoperable Network Device Management
Equipment vendors and integrators benefit from a harmonized set of YANG models, enabling interoperable implementations and simplified integration with SDN controllers and network management systems.
Related Standards
- ISO/IEC/IEEE 8802-1Q: The base standard for bridges and bridged networks, defining the framework for VLANs and network bridging.
- IEEE 802.1Q™-2022: The foundation document, providing main specifications for VLAN bridges, enhanced by this amendment.
- IEEE 802.1Qcz-2023: Prior amendment focusing on specific TSN enhancements, referenced as the basis for this YANG model addition.
- IEEE 802.1Qat, 802.1Qcc, 802.1Qcw: Related amendments addressing Stream Reservation Protocol (SRP) and TSN management capabilities.
- RFC 7950 (YANG 1.1): The core specification for the YANG Data Modeling Language, fundamental to all model-driven network management standards.
Keywords: ISO/IEC/IEEE 8802-1Q:2024, YANG data models, scheduled traffic, frame preemption, per-stream filtering, TSN, managed networks, bridge management, MIB, local area networks, metropolitan area networks, network automation, deterministic networking, network standardization.