Standard and Enhanced ImagesThe DGS-3120 Series is embedded with two different software images - Standard Image (SI) and Enhanced Image (EI). The Standard Image provides sophisticated features for businesses. It includes advanced Quality of Service (QoS), traffic shaping, L2 multicasting and robust security features. The Enhanced Image supports ERPS, Double VLAN (Q-in-Q), Ethernet OAM, Static Route, IMPB, sFlow, IPv6 features which are suitable for the next generation IPv6 networks or triple play.Features 48 networking ports to establish large network

• With PoE+ Port, transfer data and up to 25.5 W of power on a single cable to places where a power outlet is not present
• Supports cost-efficient twisted pair cables for high-speed data transfer up to 100 meters
• Gigabit Ethernet port for ultra-fast network speeds
• With leading Layer 2 support, experience enhanced convenience, secure business operations, and a borderless network experience
• Built-in power supply to ensure all components are being supplied with accurate voltage
• The desktop installation makes it ideal for deployments outside the wiring closet
• 44 x 10/100/1000 + 4 x combo SFP
• Features
  Flow control, layer 2 switching, DHCP support, BOOTP support, ARP support, VLAN support, IGMP snooping, port mirroring, DiffServ support, Weighted Round Robin (WRR) queuing, Broadcast Storm Control, IPv6 support, Multicast Storm Control, SNTP support, Spanning Tree Protocol (STP) support, Rapid Spanning Tree Protocol (RSTP) support, Multiple Spanning Tree Protocol (MSTP) support, Access Control List (ACL) support, Quality of Service (QoS), Jumbo Frames support, DHCP server, MLD snooping, Safeguard Engine, Network Access Protection (NAP), D-Link Green Technology
  Compliant Standards
  IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p, IEEE 802.3af, IEEE 802.3x, IEEE 802.3ad (LACP), IEEE 802.1w, IEEE 802.1x, IEEE 802.1s, IEEE 802.3ah, IEEE 802.1v, IEEE 802.1ag, IEEE 802.3at