D-Link 28-Port Gigabit Smart Managed PoE+ Switch User Manual

Product Overview

The D-Link DGS-1250-28XMP is a high-performance 28-port Gigabit Smart Managed PoE+ Switch designed to provide a robust and flexible networking solution for businesses. It features 24 Power over Ethernet Plus (PoE+) ports with a substantial 370W power budget, capable of powering a wide range of devices such as IP cameras, wireless access points, and VoIP phones. Additionally, it includes four 10 Gigabit SFP+ uplink ports for high-speed connectivity to your network backbone. This switch integrates advanced Layer 2 and Layer 3 Lite features, comprehensive security, and intuitive web-based management, making it suitable for diverse network environments.

Figure 1: Front view of the D-Link DGS-1250-28XMP-6KV Smart Managed Switch, showing 24 Gigabit Ethernet ports and 4 SFP+ uplink ports.

Package Contents

Verify that your package contains the following items:

• D-Link DGS-1250-28XMP-6KV Device
• DC Power Cord
• Rackmount Kit (brackets and screws)
• Rubber Feet (for desktop placement)
• Console Cable
• Quick Installation Guide

Initial Setup

1. Physical Installation

The DGS-1250-28XMP-6KV can be installed on a desktop or mounted in a standard 19-inch equipment rack.

• Desktop Installation: Attach the included rubber feet to the bottom of the switch to prevent scratching and provide stability. Place the switch on a flat, stable surface with adequate ventilation.
• Rackmount Installation: Secure the two included mounting brackets to the sides of the switch using the provided screws. Then, use appropriate screws (not included) to mount the switch into a standard 19-inch equipment rack. Ensure proper airflow around the unit.

2. Power Connection

Connect the supplied AC power cord to the power inlet on the rear panel of the switch and then to a suitable electrical outlet. Ensure the power source provides the correct voltage as specified on the switch's label.

Figure 2: Rear view of the switch, highlighting the power inlet and grounding screw.

3. Network Connections

Connect your network devices (e.g., computers, servers, IP cameras, access points) to the Gigabit Ethernet ports (1-24) on the front panel using standard Ethernet cables. For high-speed uplinks to other switches or servers, use the 10G SFP+ ports (25-28) with compatible SFP+ transceivers and fiber optic cables.

Operation and Key Features

Power over Ethernet Plus (PoE+)

The DGS-1250-28XMP provides 24 PoE+ ports, each capable of delivering up to 30W of power, with a total power budget of 370W. This allows you to power compatible devices directly through the Ethernet cable, simplifying deployment and reducing cabling complexity.

Figure 3: Illustration of PoE and PoE+ capabilities, demonstrating the 370W power budget for connected devices.

Figure 4: Examples of devices powered by PoE+, including IP cameras, VoIP phones, and LED lighting.

10G SFP+ Uplink Ports

The four 10G SFP+ ports provide high-bandwidth connectivity for network aggregation or connection to servers and storage devices, ensuring fast data transfer and network scalability.

Intuitive Web-Based Management

The switch can be easily configured and monitored via a user-friendly web interface. This allows for quick setup, real-time status monitoring, and advanced feature configuration without requiring command-line expertise.

Figure 5: Screenshot of the intuitive web management interface, offering both Standard and Surveillance modes.

Surveillance Mode with ONVIF Support

This specialized mode simplifies the deployment and management of IP surveillance networks. It automatically detects ONVIF-compliant devices and segments them into a dedicated Auto Surveillance VLAN, optimizing video traffic and enhancing security.

Figure 6: Detailed view of the Surveillance Mode interface, illustrating network topology and device status.

PD Alive

The PD Alive feature actively mitigates downtime by automatically rebooting unresponsive PoE devices. This ensures continuous operation of critical network components like IP cameras, reducing the need for manual intervention.

Figure 7: Visual representation of PD Alive, showing how it reboots unresponsive devices to maintain network uptime.

Advanced Traffic Management and Security

The switch includes a comprehensive suite of Layer 2 and Layer 3 Lite features such as IPv4/IPv6 static routing, VLAN support, Quality of Service (QoS), Link Aggregation, and Spanning Tree Protocol (STP) for efficient network segmentation and traffic optimization. Security features include Access Control Lists (ACL), Port Security, 802.1X authentication, ARP Spoofing Prevention, and D-Link Safeguard Engine to protect against malicious attacks.

Figure 8: Overview of advanced traffic management and robust network defense capabilities.

Maintenance Guidelines

To ensure optimal performance and longevity of your DGS-1250-28XMP-6KV switch, follow these maintenance guidelines:

• Ventilation: Ensure that the ventilation openings on the switch are clear and unobstructed. Do not block airflow to prevent overheating.
• Cleaning: Periodically clean the exterior of the switch with a soft, dry cloth. Do not use liquid or aerosol cleaners.
• Firmware Updates: Regularly check the D-Link support website for the latest firmware updates. Keeping the firmware up-to-date ensures access to new features, performance improvements, and security patches.
• Environmental Conditions: Operate the switch within the specified temperature and humidity ranges to prevent damage.

Troubleshooting Common Issues

This section provides solutions to common problems you might encounter with your DGS-1250-28XMP-6KV switch.

• No Power: If the power LED is off, ensure the power cord is securely connected to both the switch and the power outlet. Verify the power outlet is functional.
• No Network Connectivity: Check the link/activity LEDs on the connected ports. If they are off, ensure the Ethernet cables are properly connected and not damaged. Verify that the connected devices are powered on and functioning correctly.
• PoE Device Not Powering On: Confirm that the connected device is PoE compatible. Check the PoE status LED for the port. Ensure the total PoE power budget (370W) is not exceeded. The PD Alive feature can automatically reboot unresponsive PoE devices.
• Slow Network Performance: Check for network loops using Spanning Tree Protocol (STP) or Loopback Detection. Utilize the switch's cable diagnostics feature to identify faulty cables. Consider configuring QoS to prioritize critical traffic.
• Cannot Access Web Management: Ensure your computer is on the same network segment as the switch. Verify the switch's IP address and your computer's IP settings. Try clearing your browser's cache or using a different browser.
• Switch Not Responding: If the switch becomes unresponsive, perform a soft reboot via the web interface if accessible. As a last resort, disconnect the power cord, wait 10 seconds, and then reconnect it.

Technical Specifications

Figure 9: Comparison table for DGS-1250 series Smart Managed Switches.

Warranty and Technical Support

The D-Link DGS-1250-28XMP-6KV switch is backed by D-Link's Lifetime Warranty, ensuring long-term confidence in the quality and reliability of your network infrastructure. For detailed warranty terms and conditions, please refer to the warranty information included with your product or visit the official D-Link website.

For technical assistance, product documentation, or to download the latest firmware and software, please visit the D-Link support website. You can typically find support resources by searching for your specific model number (DGS-1250-28XMP-6KV).

D-Link Support Website: https://us.dlink.com/support