Network switch D-Link S5750E-28F-SI-D L3 Lite — 16x SFP, 8x SFP/Combo, 4x 10G ports

D-Link S5750E-28F-SI-D L3 Lite is a fixed-configuration network switch intended for aggregation and distribution layers in enterprise, campus and service provider networks. It offers a mix of fiber and high-speed ports: sixteen SFP fiber ports for uplinks, eight SFP/metal combo ports for flexible access, and four dedicated 10G ports for high-bandwidth links. The device implements Layer 3 Lite routing capabilities and common management features for segmentation, traffic control and scalable interconnection.

Advantages

The switch combines dense fiber connectivity with dedicated 10G interfaces to support aggregation and backbone roles. Layer 3 Lite features allow inter-VLAN routing and basic routing protocols while keeping configuration and resource requirements lower than full routing platforms. Flexible SFP/metal combo ports give deployment options for either fiber or copper, and the mix of port types simplifies network design for data centers, campus backbones and ISP aggregation points.

Suitable for

• Enterprise aggregation and distribution layers
• Campus backbone and building interconnects
• Service provider aggregation and point-of-presence sites
• Data center top-of-rack or middle-of-row aggregation

Key specifications

• Port configuration: 16 SFP fiber ports, 8 SFP/metal combo ports, 4 fixed 10G ports
• Switching architecture: Layer 3 Lite with inter-VLAN routing support
• High-speed uplinks: four 10G ports for aggregation
• Flexible connectivity: combo ports support either SFP modules or metal RJ-45 copper
• Deployment role: aggregation/distribution and backbone

How to use

Install the switch in a standard 19-inch rack and connect fiber or copper transceivers into the appropriate SFP or combo ports. Use the dedicated 10G ports for uplinks to core switches or servers that require higher bandwidth. Configure VLANs and enable Layer 3 Lite routing to segment traffic between access switches and to provide routed paths between subnets. Use the built-in management interface for initial setup, SNMP for monitoring, and configure QoS and access control lists as required for traffic prioritization and security.

Usage recommendations

For stable operation, populate high-bandwidth links (server uplinks or core connections) onto the dedicated 10G ports while using SFP ports for fiber aggregation. Choose SFP transceivers compatible with your fiber type and distance requirements. Apply VLANs and route summarization to simplify route tables and use QoS to ensure critical traffic receives priority across aggregation links.