SEL-2744

Build Your Perfect Ten-Port Switch—In addition to two standard 1000BASE/10GBASE small form-factor pluggable (SFP)+ ports, choose from 10/100/1000BASE copper or 100/1000BASE SFP ports. Mix and match port types in groups of four. Select from multiple mounting options and integrated dual power supply options from 12–250 V. The SEL-2744 is compatible with both SEL and non-SEL fiber SFP transceivers thanks to its generous power budget.

Leverage Flexible Networking Technologies—Order the SEL-2744 with either RSTP-based or OT SDN-based control plane technology. Field-convert between RSTP and OT SDN with a simple firmware update.

Synchronize Time Over the LAN With Accuracy—The SEL-2744 is a transparent Precision Time Protocol (PTP) clock that supports the IEEE C37.238-2017 power system profile to ensure submicrosecond time synchronization of end devices.

Operate in Harsh Environments—With no fans or moving parts, the SEL-2744 eliminates points of failure to maximize its operational lifespan. The SEL-2744 is designed and tested to meet or exceed IEEE 1613 (Class 1) and IEC 61850-3 standards for communications devices in electric power substations.

RSTP

Simplify Network Commissioning—Installing and configuring the SEL-2744 is simple. You can easily set up priority messaging with VLANs, which prioritizes the transmission of IEC 61850 GOOSE messages and current differential traffic to devices while segmenting protection, control, and automation traffic. Update settings by either using a secure web interface or importing configuration files. Using configuration files makes backups and restoration easy.

Preserve Network Integrity—Use the Bridge Protocol Data Unit (BPDU) Guard in the SEL-2744 to prevent unauthorized network changes. Protect against client saturation with rate limiting.

Easily Segment and Monitor a Flexible Network Topology—Use any of the available 4,094 VLANs for switch-to-switch connections with the SEL-2744. Monitor VLAN configurations with easy-to-read graphics. Monitor the status through Syslog and the Simple Network Management Protocol (SNMP).

Quickly Integrate With an NMS—Thanks to extensive SNMP management information base support, the SEL-2744 integrates with leading NMSs to render network topology, RSTP states, VLAN memberships, and the host address and locations. Set traps to alert you when events happen on your network.

Engineer Reliable and Secure Networks—Protect against unintentional or malicious device connections and cable imperfections with the media access control (MAC) security and port-monitoring features. Dynamic and static MAC security ensures only expected devices can connect to your network. Port monitoring watches for and disables ports when the link or communications integrity is compromised, such as in link flapping or cyclic redundancy check packet errors, preventing them from spreading and impacting the whole network. Provide central authentication with the Lightweight Directory Access Protocol (LDAP) or one- or two-factor authentication with Remote Authentication Dial-In User Service (RADIUS).

OT SDN

Create Stronger Network Security—Ensure that only trusted traffic can travel through your network. Leveraging a deny-by-default architecture, the SEL-2744 and SEL-5056 NMS software deliver multilayer packet inspection at each hop. If packets don’t match authorized communications flows, OT SDN drops them or sends them to your intrusion detection system. OT SDN also makes systems more cybersecure by eliminating attack-prone legacy networking features, like flood to learn, nonsecure control planes, and broadcast domains.

Improve Failover Performance—Proactively engineer your network traffic with OT SDN. This solution brings more precision and predictability to critical infrastructure networks, reliably supporting even the most demanding control system signals, such as Sampled Values. The failover time is less than 1 ms—two orders of magnitude faster than what legacy networking technology can achieve. And since there are no blocked ports, like in RSTP, you can use all SEL-2744 ports for communications flows.

Streamline NERC CIP Data Collection—Use the SEL-2744 to establish inline, nonbypassable security controls for ports and services. Use the SEL-2744 and the SEL-5056 NMS to automate information collection and reporting of NERC CIP-007-6 R1.1 without dangerous scanning or expensive site visits; this automation addresses system security management for open ports and services on cyber assets.

Centralize Network Configuration and Updates—Manage your network, not individual switches. The SEL-5056 NMS software centralizes network configuration and all changes to the network, eliminating the need to update settings in individual switches.