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What is TSN?
TSN (Time Sensitive Networking) is a standard technology defined by the IEEE. It operates at Layer 2 (Data Link Layer) of the OSI model, extending the functions of conventional Ethernet and enabling deterministic message transmission over standard Ethernet networks.
TSN ensures deterministic communication by adopting time synchronization mechanisms (IEEE 802.1AS) and time-aware scheduling (IEEE 802.1Qbv). Compared with traditional Ethernet, TSN supports the coexistence and hybrid transmission of real-time and non-real-time services on the same network.
Key IEEE Protocols of TSN Switches
| IEEE 802.1AS | Generalized Precision Time Protocol (gPTP) It ensures clock synchronization of all device nodes connected to the network, achieving accuracy errors at the microsecond even nanosecond level. Measurement messages do not be transmitted across devices, delivering excellent network scalability. |
| IEEE 802.1Qbv | Enhancements for Scheduled Traffic, commonly known as Time-Aware Shaper (TAS).It allocates specific time slots for high-priority time-sensitive critical data through the Time-Aware Shaper. At specified time points, all nodes in the network must give priority to the forwarding of important data frames. |
| IEEE 802.1Qbu | Frame Preemption SchedulingData frames are classified by priority. During transmission, low-priority data frames can be preempted by high-priority ones, allowing high-priority frames to be transmitted first. This ensures the prioritized transmission of real-time data frames, while the information of low-priority data frames remains intact without any loss. |
| IEEE 802.1Qci | Its full name is Per-Stream Filtering and Policing (PSFP).It adopts filtering and traffic policing strategies for each individual data stream to ensure ingress traffic complies with specification standards, so as to avoid abnormal traffic issues caused by faults or malicious attacks such as DoS attacks. |
| IEEE 802.1CB | A standard designed to ensure high reliability, officially named Frame Replication and Elimination for Reliability (FRER).This standard defines frame replication and elimination mechanisms to enhance service reliability. It is applied to Ethernet topologies that require highly reliable data transmission and provide redundant transmission paths in the network. |
| IEEE 1588 (PTP V2) | Precision Time Protocol (PTP) — Precision Time Synchronization Protocol.The PTP protocol provides precise clock synchronization in packet-based network systems. |
IEEE 802.1AS: High-Precision Time Synchronization Protocol
The TSN switch adopts the IEEE 802.1AS precise time synchronization protocol, an upgraded version of IEEE 1588 v2. It is equipped with high-precision hardware timestamps and supports multiple time synchronization mechanisms and network topologies, making it suitable for application scenarios that require high-precision time synchronization.
With IEEE 802.1AS, devices in the network can work collaboratively and share a unified time framework, enabling highly synchronized data transmission. It lays a solid foundation for the stability and reliability of deterministic networks.
Highly secure, powerful and flexibly customizable TSN switch
Customized on demand to meet high-standard requirements of industry applications.
Advanced TSN Chip：Dedicated TSN chip ensures the stable operation of large-capacity data switching for TSN switches.
Time Synchronization：Adopting the optimal deterministic communication mechanism, it supports the PTP-1588 precision clock synchronization protocol and features synchronous compatibility with TSN devices.
Traffic Shaping：It ensures ultra-low latency of data passing through the switch via traffic scheduling, and realizes deterministic delivery of service traffic.
10G SFP+：Supports 100M/1G/10G port rates, suitable for a variety of bandwidth applications, especially high-throughput scenarios.
Industrial Grade Protection：Operating temperature range: -40°C to 75°C, with IP40 high-level protection, lightning protection and anti-electromagnetic interference capability.
Dual Power Redundancy：Industrial-grade redundant power input system with multiple power supply options and low-power design.
Ring Network Redundancy：Supports MSTP and ERPS ring protection, featuring fast self-recovery to prevent network interruption and external intrusion.
Layer 2/ Layer 3 Functions：Powerful Layer 2 and Layer 3 capabilities, supporting VLAN, QoS, MSTP, IGMP, Layer 3 routing and more.
Application of TSN Switches
TSN switches adopt Time-Sensitive Networking (TSN) technology and the IEEE 1588 Precision Time Protocol (PTPv2) to implement time synchronization on all ports, delivering real-time and low-latency network communications for industrial automation, smart power grids, rail transit, 5G NR networks, in-vehicle networks, Industry 4.0, and VR/AR industries.
TSN Switch Products
The TSN series industrial Ethernet switches build deterministic networks leveraging TSN technology to ensure low latency and low jitter.
Equipped with gigabit and 10G optical modules, they feature large backplane bandwidth and wire-speed forwarding, enabling efficient and reliable data transmission.
They support the ERPS ring network protocol and international standard STP/RSTP/MSTP protocols to further enhance network stability.
With rich QoS and security policies as well as powerful management functions, they can meet a wide range of application requirements.
The fanless design and wide operating temperature range make them adaptable to various harsh environments.
