html{display:none} SEL-2740S Software-Defined Network Switch | Schweitzer Engineering Laboratories


Software-Defined Network Switch

The SEL-2740S is the industry’s first field-hardened software-defined networking (SDN)-enabled switch and is designed to improve Ethernet performance in mission-critical applications. By providing centralized traffic engineering, the SEL-2740S and the SEL-5056 Software-Defined Network Flow Controller give you path- and packet-level control of your communications flows. The SEL-2740S and SEL-5056 provide an innovative solution that employs SDN to enhance the dependability, performance, configuration, and management of proactive operational technology (OT) and dynamic information technology (IT) networks. The SEL-2740S is designed for the harsh environments commonly found in the energy and utility sectors.

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Synchronize Time Over the LAN With Accuracy—The SEL-2740S acts as a transparent Precision Time Protocol (PTP) clock supporting the IEEE C37.238 power system profile to ensure submicrosecond time synchronization of end devices.

Traffic-Engineer Each Communications Flow—Take control of how the network performs by configuring physical and logical circuits, or flows, for each application. Network administration focuses on the application requirements instead of network limitations. Traffic engineering enables the system owner to decide how packets are forwarded by the deny-by-default architecture, regardless of the Ethernet type. This enables the system owner to have control of every Ethernet frame allowed on the network and how it is transported.

Ensure Critical Applications Operate and Perform to Specification—Predetermine how the network will respond to failure states by proactively configuring primary and failover communications flows for each application. With network convergence times less than 100 μs, failover times are two orders of magnitude less than those achieved with traditional networking technology.

Maximize Utilization of Switch Resources and Bandwidth—With no blocking ports, all links are useable for communications flows. Balance flow transports by maximizing the use of every port and link on the system. Control traffic congestion by logically and physically isolating the high-priority communications flows from lower-priority flows. Use meters for rate-limiting applications.

Simplify Network Design With Topology-Independent Traffic Engineering—Design topologies and communications flows based on the application requirements instead of optimizing for dynamic control plane administrative protocols, such as the Rapid Spanning Tree Protocol (RSTP). Simply configure the communications attributes of a specific protocol session and the forwarding path instead of requiring MAC addresses and virtual local-area networks (VLANs) within the constraints of RSTP. This eliminates the additional network-required tags or labels and simplifies operations. With the removal of RSTP, the network bandwidth is free for operational data and the removal of RSTP topology design restrictions. Traffic engineering identifies the key attributes that make a unique communications flow, configures the specific circuit that flow should be forwarded through, and assigns any change action set along the way.

Centrally Manage and Monitor Networks in Near Real Time—Enhance system awareness using centralized network monitoring, and extend network visibility to the substation. The SEL-5056 Flow Controller provides comprehensive monitoring of all path- and packet-level network statistics of each communications flow, giving increased awareness of network health and status.

Programmatically Test and Validate Your Network—Reduce deployment timelines and eliminate errors by using the SEL-5056 Flow Controller to programmatically test the network implementation and validate all configurations and contingencies prior to commissioning.

Manage Network Scalability and Change Management—Use the SEL-5056 Flow Controller to manage all network changes without affecting existing services and applications. All network additions and changes can be configured centrally and pushed out to configure the network of SEL-2740S Switches.

Easily Integrate Edge Facilities Into a Dynamic IT Network Infrastructure—Seamlessly integrate with corporate IT infrastructure systems via support of the OpenFlow 1.3 standard. Maintain existing SDN flow controller network management models, and deploy the SEL-2740S in field sites and substations. The SEL-2740S easily integrates with existing SDN infrastructure through its standards-based interoperability.

Create Stronger Network Security—Control exactly what is allowed on your network with the deny-by-default architecture of the SEL-2740S. The flow table configuration allows matching rules on fields in Layer 1 through Layer 4 of the packet. This gives the system owner control of what is allowed on the network at every layer of the network. Only configured flows are forwarded. These rules can be preconfigured or dynamically set from the SEL-5056 Flow Controller.




Engineer a better network. It starts with SDN.

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Engineer a better network. It starts with SDN.

How to Use SEL-5056 Software: Installation and Adoption

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How to Use SEL-5056 Software: Installation and Adoption

How to Use SEL-5056 Software: Establishing Logical Connections

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How to Use SEL-5056 Software: Establishing Logical Connections

Accurately distribute PTP.
Support for IEEE 1588 PTP transparent clock with the IEEE C37.238 power system profile

Ensure mission-critical application performance.
Sub-100-microsecond failover times

Create stronger network security.
Deny-by-default access control

Provide centralized log collection.
Greater situational awareness using syslog to send and collect logs from all switches

Design exact configurations to match the application.
Flexible 4-port Ethernet module options

Integrate seamlessly with existing infrastructure.
OpenFlow 1.3 support

Simplify network design.
Topology-independent networking with proactive traffic engineering of primary and secondary data paths

Simplify the implementation of power utility and industrial OT networks.
SEL-5056 Software-Defined Network Flow Controller

Programmatically test networks.
Validation of all configurations and contingencies prior to commissioning

Provide centralized network management.
Complete network visibility with formal change control and nondisruptive change management

Operate in tough conditions.
IEEE 1613 compliance, KEMA certification, and –40° to +85°C (–40° to +185°) operating range


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The Firmware IDs for older versions of the firmware can typically be found in Appendix A of the instruction manual.

Minimum QuickSet Version

Minimum QuickSet Version