D-Link 48-portový Gigabit Smart Managed switch so 4 x 10G SFP+, 370 Watt

The D-Link DGS-1250 Series Smart Managed Switch delivers cost-effective performance for enterprise access and small-to-medium business (SMB) aggregation. Available in 24- and 48-port 10/100/1000BASE-T configurations, each switch can include four additional 10G SFP+ ports for fiber connections. The series offers multiple management interfaces including a console port with full CLI, web management in 11 languages, Advanced Layer‑2 and Lite Layer‑3 features, QoS support, and a high PoE budget on PoE models.

Advantages

The DGS-1250 Series simplifies maintenance through Dual Image and Dual Configuration support and a full Command Line Interface for remote configuration. Built‑in Spanning Tree protocols (STP/RSTP/MSTP) reduce downtime, while automatic features such as Auto Voice VLAN and Surveillance Mode let voice and video traffic be identified and handled separately. PoE models support IEEE 802.3af/at with centralized PoE management for remote reboot and power control. Advanced management features include IGMP snooping, port mirroring, LACP and basic static routing between VLANs.

Key specifications

• Ports: 48 x 10/100/1000BASE-T (PoE model) plus Console port RJ-45
• Uplink: 4 x 10G SFP+ ports
• PoE: 370W total budget (supports IEEE 802.3af and 802.3at)
• Layer‑3: Lite L3 static routing
• Security & authentication: 802.1X Authentication, IMPB and other advanced security features
• High availability: Dual Image & Dual Configuration; supports STP/RSTP/MSTP
• Management: Full CLI, web management (11 languages), managed L3 web interface
• Performance: MAC address table 32,000 entries; switching capacity 176 Gbit/s
• ACL: 768 Access Control List entries
• Other: IGMP snooping, Port Mirroring, LACP, IEEE 802.3x Flow Control, QoS enablement
• Form factor: Rack mountable; power supply included

How to use

Install the switch in a standard 19-inch rack or place it on a flat surface. Connect uplink fibers to the SFP+ ports and copper devices to the RJ-45 ports. For PoE models, attach powered devices such as IP cameras, VoIP phones or wireless access points to PoE ports; the switch will supply power automatically according to IEEE 802.3af/at. Configure the device using the web interface, CLI over the console port, or other supported management methods; set VLANs, QoS policies, PoE schedules and static routes as required. Use Dual Image and Dual Configuration features to apply updates safely and rely on STP/RSTP/MSTP to maintain network stability during topology changes.

Recommendations

For deployments requiring centralized power and voice/video prioritization, choose a PoE model and plan VLANs for voice and surveillance traffic. Regularly back up configuration files and use Dual Image functionality before firmware upgrades to minimise service disruption.