Reza Eltejaein from Marvell Technology explained how deterministic Ethernet is displacing special purpose networks in several applications also describing the company’s new Ethernet switches for harsh environments and PHYs targeted to the industrial and critical infrastructure markets. This solution finally brings Time Sensitive Networking (TSN) to reality.

Ethernet is still too expensive for the sensor and other physical device layer. Achieving deterministic Ethernet for critical applications above that layer has been a target for engineering for years. Marvell Technology now offers a solution. 

Marvell’s Secure Deterministic Ethernet solution, comprised of Prestera switches and Alaska PHYs, is designed for switch appliances used in often-harsh environments. By enabling the more widespread use of Ethernet in the OT environment, the new solution facilitates the adoption of modern IT tools and security methods in OT networks, enabling a common management and automation approach from the cloud to the OT network edge.

The new solution addresses deterministic networking requirements with a set of Ethernet standards known as time-sensitive networking (TSN). With TSN, virtually any kind of Ethernet traffic can share a network, allowing siloed IT and OT networks to converge, thus reducing costs and facilitating in OT networks the analytics, automation and intelligence that are transforming IT networks.  

To better protect these networks, the new Prestera industrial-grade switches with TSN offer industry-first device- and link-level security, in the form of Secure Boot and MACsec. 

  • Integrated switching, CPU and Ethernet PHY—reduces power and footprint versus separate components. 
  • Time-Sensitive Networking: 802.1AS, 802.1CB, 802.1Qav, 802.1Qbv, 802.1Qbu, 802.1Qci, 802.1Qat—supports reliable, low-latency Ethernet performance.  
  • IEC/IEEE 60802 TSN profile for Industrial Automation—enables real-time end-to-end communications with guaranteed reliable performance and data delivery. 
  • 802.1AE MACsec—provides Layer-2 security for data integrity and confidentiality. 
  • Secure Boot—allows only trusted software to execute on the system. 
  • Parallel Redundancy Protocol (PRP) and Highly-available Seamless Redundancy (HSR)—provide no-loss failover in case of failure of any single network element. 
  • TrackIQ—provides rich telemetry data for use in network analytics and observability tools. 
  • Ruggedized -40°C to +85°C system operation—enables reliable operation in harsh environments and an expected lifetime of at least 10 years. 

Availability 

The Prestera DX1500 and Alaska E1781 product families are sampling now. 

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