D-Link DGS 3630-28PC - Switch - L3 - Managed - 20 X 10/100/1000 (PoE+) + 4 X Combo Gigabit SFP + 4 X 10 Gigabit SFP+ - Rack-mountable - PoE+ (370 W) - DGS-3630-28PC/SI

• High availability and flexibility
  The DGS-3630 Series allows multiple switches to be combined to form a single physical or virtual stack. This increases redundancy over multiple physical units, simplifies management, and provides a single IP address to manage all members in the stack. Up to 9 switches can be combined using DACs to make up to 432 Gigabit Ethernet ports available, allowing switching capacity to be increased with demand. The Switch Resource Management (SRM) feature allows the hardware table size to be dynamically changed, so that switch functions can be optimized based on the use of the switch.
• Switch and link failover
  In addition to traditional Spanning Tree Protocol (STP), Rapid Spanning Tree Protocol (RSTP), and Multiple Spanning Tree Protocol (MSTP), the DGS-3630 Series also supports advanced Ethernet failover redundancy technologies, such as ERPS and FlexLink. Ethernet Ring Protection Switching (ERPS) provides millisecond-level failover in a ring topology. Meanwhile, FlexLink offers link failover on designated switch ports, providing link redundancy without STP or LBD.
• Security, performance, and availability
  The DGS-3630 Series provides a complete set of security features including multi-layer Access Control Lists (ACLs) and 802.1X user authentication via TACACS+ and RADIUS. The DGS-3630 Series also offers extensive VLAN support, including GVRP and 802.1Q VLAN to enhance security and performance. A robust set of QoS features help ensure that critical network services such as Voice over IP and video conferences are given high priority through the network. The D-Link Safeguard Engine increases the switches' reliability, serviceability, and availability by preventing traffic flooding caused by malicious attacks.
• 6 kV surge protection
  The DGS-3630 Series features built-in 6 kV surge protection on all PoE and non-PoE Ethernet access ports, and requires no external surge protection devices. This effectively protects the switches against sudden electrical surges caused events such as lightning strikes or unstable electrical current. Built-in 6 kV surge protection significantly reduces the chances of equipment being damaged from electrical surges, and effectively lowers maintenance costs by minimizing the need for expensive equipment repairs or replacement.
• D-Link Green technology
  The DGS-3630 Series features D-Link Green technology, which includes a power-saving mode, smart fan feature, reduced heat dissipation, and cable length detection. The power-saving feature automatically powers down ports that have no link or link partner, and ensures that LEDs are shut off when not needed.

The DGS-3630 Series Layer 3 stackable managed switches are designed for small to medium-sized businesses (SMBs), small to medium-sized enterprises (SMEs), large enterprises, and Internet Service Providers (ISPs). They deliver high performance, flexibility, fault tolerance, and advanced software features for maximum return on investment. With Gigabit Ethernet, SFP, 10 GbE SFP+, security features, and advanced Quality of Service (QoS), the DGS-3630 Series can act as core, distribution, or access layer switches. High port densities, switch stacking, and easy management make the DGS-3630 Series suitable for a variety of applications.