Network Switch D-Link DMS-1250-18/E 18-Port Smart Managed 18x 2.5G + 2x 10G SFP+

The D-Link DMS-1250-18/E is an 18-port Smart Managed network switch offering sixteen 2.5G RJ-45 downlink ports and two 10G SFP+ uplink ports. Designed for small and medium enterprises and advanced LAN deployments, the unit provides multi-gigabit connectivity over existing cabling, managed Layer 2 features, PoE options, and 10G fiber uplinks for aggregation or backbone links. The switch is intended to support high-bandwidth devices such as Wi‑Fi 6 access points, workstations, and networked storage while integrating with central management tools.

Advantages

The switch delivers 2.5 Gbps performance on multiple RJ-45 ports while remaining compatible with 100/1000 Mbps connections, enabling higher throughput without re‑cabling. Two 10G SFP+ uplinks provide dedicated high-speed aggregation paths or connections to storage and core switches. Managed Layer 2 capabilities include link aggregation, STP variants, ACLs and QoS to prioritise traffic and improve network stability. Built-in surge protection on the 2.5G ports and support for AAA and D‑Link Safeguard Engine add resiliency and security. The device supports PoE variants for flexible power delivery to edge devices and can be managed through web-based interfaces or the Nuclias controller.

Suitable for

• Small and medium enterprise access layer deployments requiring multi-gig connectivity
• Wi‑Fi 6 access point aggregation where 2.5G per-port throughput improves wireless backhaul
• Edge connectivity for high-performance workstations, IP cameras, and networked appliances
• Environments needing 10G uplinks to aggregation switches or network-attached storage

When it may not be suitable

This switch focuses on managed Layer 2 functions and multi-gig access; it does not replace a full-featured Layer 3 core router for complex routing or large-scale WAN functions. If your deployment requires advanced routing features beyond static routes or very large scale layer 3 segmentation, a dedicated router or Layer 3 switch may be more appropriate. Also, if your network strictly uses only 10G downlinks on every port, a switch with more native 10G ports would better match that requirement.

Key specifications

• Port configuration: 16 × 2.5G RJ‑45 downlink ports, 2 × 10G SFP+ uplink ports
• Supported Ethernet speeds: 100/1000/2500 Mbps on RJ‑45 ports; 10 Gbps on SFP+ uplinks
• Switch type: Managed, Layer 2 with static routing support
• Switching capacity: 120 Gbit/s; MAC address table: 16,000 entries
• Standards: IEEE 802.3ae, 802.3ab, 802.1p, 802.1Q, 802.3an, 802.3az, 802.3bz, 802.3u, 802.3z
• QoS, ACL, LACP (802.3ad), STP/RSTP/MSTP support
• Surge protection: 6 kV on all 2.5G Ethernet ports
• Management: Web-based L2 management and Nuclias Network Controller support; CLI available
• Physical: rack-mountable, stackable design; colour: black; weight: 2.968 kg
• Power and PoE: AC power supply included; PoE options (PoE+ / PoE++ variants available depending on model/configuration)

How to use

Install the switch in a standard 19-inch rack or place it on a stable surface and connect the AC power supply. Use CAT5e or higher cabling to connect client devices to the 2.5G RJ‑45 ports; the ports will negotiate to 100/1000/2500 Mbps as supported by the endpoints. Connect the SFP+ modules to compatible fiber or DAC links for 10G uplinks to core switches or storage. Access the web management interface or Nuclias Network Controller to configure VLANs, link aggregation, QoS policies, ACLs and STP settings. For PoE devices, verify the specific PoE budget and power mode on the particular unit before connecting high-power devices.

What to consider before purchase

• Confirm whether PoE power budget and PoE type (PoE+ or PoE++) meet the requirements of connected devices
• Ensure existing cabling is at least CAT5e to support 2.5G operation where required
• Plan uplink topology and SFP+ module type (fiber or DAC) needed for 10G connections
• Verify management preferences (web GUI, Nuclias controller, CLI) and integration with existing network management

Usage recommendations

Use the switch as an access-layer multi-gigabit aggregation point for Wi‑Fi 6 APs and high-performance endpoints; enable QoS and VLAN segmentation to prioritise latency-sensitive traffic and deploy link aggregation for redundancy and increased throughput on critical links.