Computer Networks and components

The DGS-1250-28X/E from D-Link is a high-performance switch designed for professional and advanced network environments. This rack-mountable device features 28 ports , including 24 10/100/1000BASE-T ports for fast and stable Ethernet connections, plus 4 10 Gbps SFP+ ports for fiber optic connectivity, offering flexibility for high-speed links and network expansion. Its 128 Gbps switching capacity and 95.24 Mpps forwarding rate ensure efficient handling of heavy data traffic, ideal for enterprise networks requiring performance and reliability. It has a 12 Mbit packet buffer and a MAC address table supporting 16,000 entries , optimizing device management and enabling traffic segmentation via VLANs, supporting up to 4094 groups , including advanced features like asymmetric VLAN and Auto Voice VLAN for voice quality. For security and management, the switch supports 802.1X access control, ARP inspection, DHCP snooping, and ARP Spoofing protection, and integrates D-Link’s Safeguard Engine to prevent DoS attacks and manage broadcast, multicast, and unicast storms. Its software includes extensive L2 and L3 features such as IPv4 and IPv6 static routes, 802.3ad link aggregation, multiple Spanning Tree protocol variants, and jumbo frame support up to 12,000 bytes, facilitating complex and fault-tolerant networks. Management options include a web interface, CLI, SNMP v1/v2c/v3, Telnet, dual configurations, backup and restore options, Smart Wizard assistant, and built-in cable diagnostics. Physically, the device has a robust black design with compact dimensions (440 x 140 x 44 mm) and weighs approximately 1.75 kg , balancing capacity and size for rack mounting. It complies with widely used IEEE standards, offering duplex modes and MDI/MDIX auto-negotiation on all ports. Power is universal (100-240 V AC) with an average consumption of 29.6 W , suitable for energy-restricted environments. In summary, the DGS-1250-28X/E is a manageable switch combining a compact physical design with robust technical capacity for corporate networks, enabling detailed and secure traffic control, ready to integrate into modern infrastructures demanding high speed and stability. Type: Switch Product with plug: Yes Type of plug: Plug EU Colour: Black Ports: 28

The DGS-1250-28XMP/E from D-Link is a Layer 3 managed switch designed for professional environments and corporate networks requiring high performance and advanced management. It features 28 ports , of which 24 are RJ45 Gigabit Ethernet (10/100/1000 Mbps) , and is equipped with 1 PoE port compatible with IEEE 802.3af and 802.3at standards, allowing direct power supply to compatible devices such as cameras or IP phones via the same network cable, simplifying infrastructure. This device offers a 128 Gbit/s switching capacity and an extensive MAC address table with 16,000 entries , ensuring efficient traffic management and support for demanding networks with multiple simultaneous connections. It is equipped with 2 GB DDR3 SDRAM memory for fast and stable processing, ideal for ensuring low latency and high reliability in data transmission. The power supply accepts a wide voltage range, from 100 to 240 V , facilitating integration into different electrical environments. The unit includes an RJ-45 console port for advanced configuration and supports bidirectional communications in full duplex mode, optimizing data flow. Its robust black design and rack-mount form factor make this switch easily adaptable to data centers or communication rooms. In short, the DGS-1250-28XMP/E is a reliable and flexible network solution, suitable for managing complex infrastructures that demand efficiency, PoE support, and high switching capacity. Product with plug: Yes Type: Switch Type of plug: Plug EU Colour: Black Ports: 28 Approx. weight: 1,6 kg

Ports: 4 24 28 Speed: 10/100/1000 Mbps Type: Switch Product with plug: Yes Type of plug: Plug EU Colour: Black Approx. weight: 1,6 kg

The managed switch D-Link DGS-1250-52X/E is a professional device designed for network environments that require high connection capacity and advanced flexibility. It features a total of 52 ports , of which 48 are RJ-45 ports supporting speeds of 10/100/1000 Mbps , providing reliable and versatile Ethernet connections for various devices within corporate or data center networks. Additionally, it includes SFP+ ports that allow fiber optic connections at higher speeds, ideal for high-speed and long-distance links, facilitating integration into mixed copper and fiber infrastructures. Its black design and rack-mount format make it suitable for server rooms or communication cabinets, contributing to a neat and professional installation. This model incorporates advanced management features typical of a managed switch, such as custom configuration, VLANs, QoS (quality of service) to prioritize traffic and improve critical application performance, as well as support for layer 2 and 3 protocols that optimize network control and security. The power supply with a European plug ensures easy compatibility with standard electrical infrastructures. Overall, the D-Link DGS-1250-52X/E is a robust and scalable solution that combines high port density with advanced management capabilities, aimed at demanding networks that require stability, speed, and flexibility in their connections. This switch is an ideal choice for companies and technology projects seeking to establish a reliable and efficient network infrastructure. Type: Switch Ports: 52 Product with plug: Yes Type of plug: Plug EU Colour: Black

The DGS-1510-20/E from D-Link is a high-performance managed switch designed for SME/SMB environments requiring reliable and scalable interconnection between network devices. It features an advanced setup with 16 Gigabit Ethernet 10/100/1000 Mbps ports , complemented by 2 Gigabit SFP ports for fiber connections and 2 10G SFP+ ports for high-speed links or physical stacking, making it ideal for network architectures demanding flexibility and expansion capacity. It complies with IEEE 802.3 10Base-T, 802.3u 100Base-TX, 802.3ab 1000Base-T, and 802.3ae 10GbE standards, ensuring broad compatibility and support for IEEE 802.3x flow control in full-duplex mode to optimize data transmission. Its switching capacity is 76 Gbps and it can manage up to 16,000 MAC entries , ensuring efficient traffic handling and network segmentation. For optimal performance, it supports full/half duplex modes at various speeds and is compatible with UTP Cat 5 and Cat 5e cables with a maximum reach of 100 meters, as well as standard EIA/TIA-568 STP cables, adapting to diverse installations. Regarding construction, this switch features a gray color and rackmount design, facilitating integration into racks or professional setups. Its power consumption is low, with a maximum of 20.3 W, while noise level reaches 43.8 dB(A), important for work environments sensitive to efficiency and acoustic comfort. The compact dimensions of 280 x 180 x 44 mm and weight of 1.24 kg ease installation and maintenance. It also includes LED indicators for simple and quick device status monitoring. The DGS-1510-20/E offers a robust solution and advanced technology that meets the connectivity and management needs of medium-sized business networks, providing reliability and flexibility in data infrastructure deployment. Connections: RJ45 SFP Ethernet LAN Type of plug: Plug EU Product with plug: Yes Type: Switch Stackable Colour: Grey Voltage: 100-240 V 100 - 240 V Ventilator: 1 Frequency: 50-60 Hz Noise level: 43.8 dB Characteristics: LED in operation indicator AC input frequency: 50-60 Hz Weight: 1,24 Kg Power supply: Iincluded Form factor: 1U

The DGS-1510-28X/E from D-Link is a Layer 3 managed switch designed for professional network environments requiring high switching capacity and flexible connections. It features a total of 28 ports , including 24 RJ-45 Gigabit Ethernet ports (10/100/1000 Mbps) that provide reliable, high-speed wired connections for network devices. Additionally, it includes a power connector for DC input and is rack-mountable, facilitating integration into enterprise communication infrastructures. Its architecture supports full-duplex technology, optimizing simultaneous data transfer, reducing collisions, and improving overall network efficiency. The switching capacity reaches up to 92 Gbit/s , supporting high traffic and ensuring suitable performance for critical applications. Its MAC address table can store up to 16,000 entries , enabling efficient device management and enhancing network security and organization. This device complies with IEEE 802.3 standards, including 802.3ab, 802.3ae, 802.3u, and 802.3x, ensuring compatibility with current Ethernet technologies, including support for Ethernet LAN and high-speed connections such as Gigabit Ethernet and 10 Gigabit Ethernet via SFP+ modules (implied in the model though not detailed here). Its power consumption is moderate at 24 W , balancing power and efficiency for a switch of this type. The black design and robust construction contribute to a neat, professional installation in technical environments. Overall, the DGS-1510-28X/E is a reliable, scalable solution for network administrators seeking to optimize traffic management, improve connectivity, and maintain advanced control over enterprise network infrastructure. Connections: RJ45 RJ45 x 24 Ethernet LAN Product with plug: Yes Type of plug: Plug EU Type: Switch Stackable Colour: Black Voltage: 100-240 V 100 - 240 V Frequency: 50-60 Hz 50 - 60 Hz Energy consumption: 24 W Number of slots: 4 Ports: 28 Characteristics: LED in operation indicator Width: 44 cm Approx. temperature: - 20ºC / 70°C Length: 21 cm