Overview
ISO/IEC/IEEE 8802-1Q:2024 (aligned with IEEE 802.1Q™-2022) is the international standard that specifies how Bridges and Bridged Networks support the IEEE 802 MAC Service to interconnect local and metropolitan area networks. This third edition defines the principles of operation, management, protocols and algorithms required for MAC Bridges, VLAN Bridges, and the creation and control of Virtual LANs (VLANs) and bridged networks across heterogeneous media access control methods.
Key topics and technical requirements
- Support for the IEEE 802 MAC Service across bridged topologies to ensure consistent MAC-level connectivity between LANs and MANs.
- MAC Bridges and VLAN Bridges: operational behavior, forwarding, filtering and bridging functions needed to interconnect multiple LAN segments.
- VLAN management and operation: mechanisms for defining and transporting Virtual LANs to provide traffic separation and multi-tenancy.
- Bridged network algorithms and protocols: required protocols for loop avoidance and topology control (keywords in the standard include MSTP (Multiple Spanning Tree Protocol), RSTP (Rapid Spanning Tree Protocol), and SPB (Shortest Path Bridging)).
- Time-Sensitive Networking (TSN) considerations: integration points for deterministic and low-latency traffic handling in bridged networks.
- Provider Bridged Network (PBN) and metro-scale bridging: requirements to support service provider deployments across metropolitan networks.
- Management and configuration: management models, MIBs/telemetry concepts and operational requirements for configuring and monitoring bridges and VLANs.
Note: the standard focuses on functional and operational requirements; implementers should consult the full document for protocol details and normative text.
Practical applications
- Building resilient campus LANs and multi-building enterprise networks using VLAN segmentation and standardized bridging.
- Designing metro or provider bridged networks (PBN) that interconnect customer LANs over service provider infrastructure.
- Implementing deterministic Ethernet for industrial automation, audio/video distribution, and other Time-Sensitive Networking (TSN) use cases.
- Data center and virtualization environments where VLAN Bridges and virtual bridged networks enable multi-tenant isolation and traffic engineering.
- Network equipment vendors and software developers implementing standards-compliant switching/bridging behavior.
Who should use this standard
- Network architects and systems integrators designing LAN/MAN infrastructures.
- Switch and bridge hardware or firmware vendors building IEEE 802.1Q-compliant products.
- Service providers deploying provider bridged networks and VLAN-based services.
- Test labs, certification bodies, and standards developers needing a reference for bridged network behavior.
Related standards
- Other parts of the ISO/IEC/IEEE 8802 series (IEEE 802 family) for MAC/PHY and higher-layer LAN/MAN requirements.
- IEEE 802.1 time-sensitive networking (TSN) specifications for deterministic Ethernet features.
Keywords: ISO/IEC/IEEE 8802-1Q:2024, IEEE 802.1Q, VLAN, MAC Bridge, bridged networks, LAN, MAN, MSTP, RSTP, SPB, TSN, provider bridged network.