SEL-2742

Managed OT SDN Switch

The SEL-2742 is a compact SDN (Software-Defined Networking) Ethernet switch optimized for space-constrained and harsh environments, such as industrial panels, switchgear, and outdoor enclosures. It features 12 ports, including two PoE+ ports, and supports DIN-rail or surface mounting. When combined with the SEL-5056 Flow Controller, it enables centralized control of the entire network and provides industry-leading performance and cybersecurity for precise data transmission (e.g., IEC 61850-9-2 Sampled Values) between protective relays.

Key Features

Zero-Trust and Deny-by-Default

Unlike traditional switches, the SEL-2742 utilizes SDN technology to block all communication by default unless a traffic flow is explicitly permitted. This fundamentally prevents attackers who have compromised a device from moving laterally across the network.
Minimized Attack Surface

In SDN mode, the switch eliminates the use of traditional protocols vulnerable to cyberattacks, such as MAC address learning, broadcast traffic, and RSTP. This removes common network vulnerabilities like MAC flooding or loop-induction attacks.
Signed Firmware

The device is designed to load only firmware files digitally signed by SEL to ensure authenticity and integrity. This prevents unauthorized or malicious software from running on the hardware.
Predictable Traffic Engineering

It uses static and proactive flow management to pre-define traffic paths. This ensures the perfect implementation of physical and logical isolation according to security policies while preventing network congestion.

Centralized Security Management

Through the SEL-5056 software, security policies and circuit configurations for the entire network are managed from a single location. This eliminates the need to configure individual switches manually, preventing "security holes" caused by configuration errors.
Automated Circuit Provisioning

The system automatically generates communication paths based on network drawings or configuration files. This accelerates deployment and reduces the risk of missing or incorrectly setting security parameters during manual entry.
Real-Time Flow Monitoring and Status Awareness

The controller dashboard provides a real-time visualization of which devices are communicating and through which paths. It offers high situational awareness, allowing for the immediate identification of abnormal flows or unauthorized connection attempts.
PoE+ (Power over Ethernet Plus) Support

Two ports support PoE+, allowing for the easy connection and management of security devices like IP cameras or wireless access points without the need for separate power cabling.

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