The DGS-3120 xStack Series are enhanced L2 access stackable switches designed to connect end-users in a secure SMB or enterprise network. These switches support physical stacking, multicast and enhanced security, making them an ideal Gigabit access layer solution. The DGS-3120-24TC/48TC provides 20 or 44 10/100/1000 Mbps Gigabit Ethernet ports and 4 combo 1000BASE-T/SFP Gigabit Ethernet ports. The DGS-3120-24PC/48PC provides 24 or 48 10/100/1000 Mbps PoE Gigabit Ethernet ports and 4 combo 1000BASE-T/SFP Gigabit Ethernet ports. The DGS-3120-24SC/24SC-DC provides 16 SFP Gigabit Ethernet ports and 8 combo 1000BASE-T/SFP Gigabit ports. Each 10/100/1000 Mbps port of DGS-3120-24PC/48PC supports 802.3af and 802.3at Power over Ethernet standard. The default power budget is 370 Watts and can be expanded to 740 Watts with the DPS-700 RPS. The switches are also equipped with an SD Card slot, allowing the user to boot images and upload configuration files directly from an SD Card. Furthermore, syslog files can also be conveniently saved to a card.
Standard and Enhanced Images
The DGS-3120 Series is embedded with two different software images - Standard Image (SI) and Enhanced Image (EI). The Standard Image provides sophisticated features for campus, or enterprise. 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 applications in Metro Ethernet.
Enhanced Network Reliability
The DGS-3120 Series targets enterprise/campus and customers who require a high level of network security and maximum uptime. All the models in DGS-3120 Series (except DGS-3120-24SC-DC) support an external redundant power supply so that continued operation can be assured. They also include other features, such as 802.1D Spanning Tree (STP), 802.1w Rapid Spanning Tree (RSTP) and 802.1s Multiple Spanning Tree (MSTP), Loopback Detection (LBD), and Broadcast Storm Control, that enhance network resilience. The G.8032 Ethernet Ring Protection Switching (ERPS) function minimizes the recovery time to 50 ms. For load sharing and redundancy backup in switch cascading/server attachment configuration, the DGS-3120 Series provides dynamic 802.3ad Link Aggregation Port Trunking.
Comprehensive Security
The DGS-3120 Series provides users with the latest security features such as Multi-layer and Packet Content Access Control Lists (ACL), Storm Control,
and IP-MAC-Port Binding (IMPB) with DHCP Snooping. The IP-MAC-Port Binding feature allows administrators to bind a source IP address with an
associated MAC and also define the port number to enhance user access control. With the DHCP Snooping feature, the switch automatically learns
IP/MAC pairs by snooping DHCP packets and saving them to the IMPB white list. In addition, the D-Link Safeguard Engine identifies and prioritizes “CPU
interested” packets to prevent malicious traffic from interrupting normal network flows, and to protect switch operation.
Identity Driven Network Policies
The DGS-3120 Series supports authentication mechanisms such as 802.1X, Web-based Access Control (WAC), and MAC-based Access Control (MAC) for strict access control and easy deployment. After authentication, individual policies such as VLAN membership, QoS policies, and ACL rules can be assigned to each host. In addition, the switch also supports Microsoft® NAP (Network Access Protection). NAP is a policy enforcement technology that allows customers to protect network assets from unhealthy computers by enforcing compliance with network health policies.
Traffic Management for Triple Play
The DGS-3120 Series implements a rich set of multilayer QoS/CoS features to ensure that critical network services like VoIP, video conference, IPTV and IP surveillance are served with high priority. The Traffic Shaping features guarantee bandwidth of these services when the network is busy. With L2 Multicast support, the DGS-3120 shows its ability to handle growing IPTV applications. Host-based IGMP/MLD Snooping allows multiple multicast subscribers per physical interface and ISM VLAN sends multicast streams in a multicast VLAN to save bandwidth and to provide better security to the backbone network. The ISM VLAN profiles allow users to bind/replace the pre-defined multicast registration information to subscriber ports quickly and easily.
Proactive, Effective Network Management
To uphold enterprise customers’ Service Level Agreements (SLA), service providers must reduce the Mean Time to Repair (MTTR) and increase service availability. Ethernet OAM features address these challenges and enable service providers to offer carrier-grade services. The DGS-3120 Series supports industry-standard OAM tools, including IEEE 802.3ah, IEEE802.1ag, and ITU-T Y.1731. Connectivity Fault Management (CFM) provides tools to monitor and troubleshoot end-to-end Ethernet networks, allowing service providers to check connectivity, isolate network issues, and identify customers affected by network issues.
IPv6 Technology
The DGS-3120 Series is fully compliant with the future IPv6 networks. It supports remote IPv6 manageability from telnet, HTTP, or SNMP. To create secure IPv6 networks, the DGS-3120 Series uses IPv6 ACL, DHCPv6 Snooping and Neighbor Discovery (ND) Snooping functions to protect the network from illegal IPv6 clients. The DGS-3120 Series has been certified with IPv6 Ready Logo Phase 2 from the IPv6 forum, a worldwide IPv6 advocacy consortium. The IPv6 Ready Logo Program provides conformance and interoperability of IPv6 products.
D-Link Green Technology
D-Link is striving to take the lead in developing innovative and power-saving technology that does not sacrifice operational performance or functionality.The DGS-3120 Series implements the D-Link Green Technology, which includes a power saving mode, smart fan, reduced heat dissipation, and cable length detection. The power saving feature automatically powers down ports that have no link or link partner. The Smart Fan feature allows for the built-in fans to automatically turn on at a certain temperature, providing continuous, reliable and ecofriendly operation of the switch.
Manageability
D-Link’s Single IP Management (SIM) simplifies and speeds up management tasks, allowing multiple switches to be configured, monitored and maintained from any workstation running a web browser through one unique IP address. This virtual stack is managed as a single object, having all units maintained by one IP address. The DGS-3120 Series also supports standard-based management protocols such as SNMP, RMON, Telnet, Console, Web-based GUI and SSH/SSL security authentication.
Number of 10/100/1000BASE-TX ports |
DGS-3120-24TC - 20 ports DGS-3120-24PC - 20 ports DGS-3120-48TC - 44 ports DGS-3120-48PC - 44 ports |
Number of SFP ports | DGS-3120-24SC - 16 ports |
Number of Combo 1000Base-T/SFP ports |
DGS-3120-24TC - 4 ports DGS-3120-24PC - 4 ports DGS-3120-24SC - 8 ports DGS-3120-48TC - 4 ports DGS-3120-48PC - 4 ports |
RS-232 Console Port | Yes |
SD card slot | Yes |
Number of stacking ports | 2 |
Maximum number of units per stack | 6 |
Maximum stacking bandwidth |
Linear topology - up to 20 Gbps Bi-directional redundant ring topology - up to 40 Gbps |
PoE Supported Models (Standard(s)/Number of Ports/Maximum Power Budget) |
DGS-3120-24PC - 802.3af/at/24 ports/370W (760W with DPS-700 RPS) DGS-3120-48PC - 802.3af/at/48 ports/370W (760W with DPS-700 RPS) |
Performance | |
Switch Capacity |
DGS-3120-24TC - 88 Gbps DGS-3120-24PC - 88 Gbps DGS-3120-24SC - 88 Gbps DGS-3120-48TC - 136 Gbps DGS-3120-48PC - 136 Gbps |
64-Byte Packet Forwarding Rate |
DGS-3120-24TC - 65.48 Mpps DGS-3120-24PC - 65.48 Mpps DGS-3120-24SC - 65.48 Mpps DGS-3120-48TC - 101.19 Mpps DGS-3120-48PC - 101.19 Mpps |
Packet Buffer | 2 MB |
Flash Memory | 32 MB |
Physical & Environmental | |
MTBF |
DGS-3120-24TC - 561830 hours DGS-3120-24PC - 282542 hours DGS-3120-24SC - 516317 hours DGS-3120-48TC - 292202 hours DGS-3120-48PC - 223006 hours |
Acoustics |
DGS-3120-24TC - Max: 44.2 dB; Min: 28.1 dB DGS-3120-24PC - Max: 52.5 dB; Min: 38.1 dB DGS-3120-24SC - Max: 45.0 dB; Min: 33.1 dB DGS-3120-48TC - Max: 45.2 dB; Min: 35.7 dB DGS-3120-48PC - Max: 52.3 dB; Min: 38.4 dB |
Heat Dissipation |
DGS-3120-24TC - 138.105 BTU/h DGS-3120-24PC - 1628.957 BTU/h (with 370 W PoE load), 3219.7 BTU/h (with 760 W PoE load) DGS-3120-24SC - 116.281 BTU/h DGS-3120-48TC - 228.811 BTU/h DGS-3120-48PC - 1725.46 BTU/h (with 370 W PoE load), 3367.4 BTU/h (with 760 W PoE load) |
Power Input | 100 to 240 VAC, 50 to 60Hz Internal Universal Power Supply |
Power Consumption (maximum) |
DGS-3120-24TC - 40.5W DGS-3120-24PC - 482.7W (with 370W PoE load), 944.2W (with 760W PoE load) DGS-3120-24SC - 34.1W DGS-3120-48TC - 67.1W DGS-3120-48PC - 516.5W (with 370W PoE load), 987.5W (with 760W PoE load) |
Dimensions (W x D x H) |
DGS-3120-24TC - 440 x 210 x 44 mm (17.32 x 8.27 x 1.73 inches) DGS-3120-24PC - 440 x 310 x 44 mm (17.32 x 12.20 x 1.73 inches) DGS-3120-24SC - 440 x 210 x 44 mm (17.32 x 8.27 x 1.73 inches) DGS-3120-48TC - 440 x 310 x 44 mm (17.32 x 12.20 x 1.73 inches) DGS-3120-48PC - 440 x 380 x 44 mm (17.32 x 14.96 x 1.73 inches) |
Weight |
DGS-3120-24TC - 2559 g (5.64 pounds) DGS-3120-24PC - 5423 g (11.96 pounds) DGS-3120-24SC - 2635 g (5.81 pounds) DGS-3120-48TC - 4615 g (10.17 pounds) DGS-3120-48PC - 6331 g (13.96 pounds) |
Ventilation | Smart fans4 |
Temperature |
Operating: 0° to 50°C Storage: -40° to 70°C |
Operating Humidity |
Operating: 10% ~ 90% Non-condensing Storage: 5% ~ 90% Non-condensing |
EMI/EMC | FCC Class A, CE Class A, VCCI Class A, IC, C-Tick, BSMI |
Safety | CB, cUL, LVD, BSMI |
Certification | IPv6 Ready Logo Phase 2 |
Software Feature | |
Standard Image (SI) Features | |
Stackability |
Physical Stacking Up to 40G Stacking Bandwidth Up to 6 units per Stack Virtual Stacking D-Link Single IP Management (SIM) Up to 32 units per Virtual Stack |
L2 Features |
MAC Address Table: 16K entries Flow Control 802.3x Flow Control HOL Blocking Prevention Jumbo Frames up to 13 Kbytes Spanning Tree Protocols 802.1D STP 802.1w RSTP 802.1s MSTP BPDU Filtering Root Restriction Loopback Detection 802.3ad Link Aggregation Max. 32 groups per device, 8 Gigabit ports per group Port Mirroring One-to-One Many-to-One Flow-based RSPAN Mirroring |
L2 Multicasting |
IGMP Snooping IGMP v1/v2/v3 Snooping Supports 1024 IGMP groups Port/Host-based IGMP Snooping Fast Leave Limited IP Multicast Up to 24 IGMP filtering profiles, 32 ranges per profile MLD Snooping MLD v1/v2 Snooping Support 1024 MLD Groups Host-based MLD Snooping Fast Leave |
VLAN |
VLAN Group Max. 4K VLAN Groups GVRP Max. 255 Dynamic VLAN Groups 802.1Q Tagged VLAN Port-based VLAN 802.1v Protocol VLAN Voice VLAN MAC-based VLAN ISM VLAN Asymmetric VLAN Private VLAN VLAN Trunking |
QoS (Quality of Service) |
802.1p 8 queues per port Queue Handling Strict Priority Weighted Round Robin (WRR) Strict + WRR CoS based on Switch Port VLAN ID 802.1p Priority Queues MAC Address IPv4 Address DSCP Protocol Type TCP/UDP Port User-Defined Packet Content IPv6 Address IPv6 Traffic Class IPv6 Flow Label Supports following actions for flows Remark 802.1p Priority Tag Remark TOS/DSCP Tag Bandwidth Control Bandwidth Control Port-based (Ingress/Egress, Min. Granularity 8 Kbps)5 Flow-based (Ingress/Egress, Min. Granularity 8 Kbps)5 Three Color Marker5 CIR/PIR minimum granularity: 8 kbps6 Two Rate Three Color Marker (trTCM), CBS/PBS Single Rate Three Color Marker (srTCM), CBS/EBS |
Access Control List (ACL) |
Supports up to 1.5K Ingress access rules ACL based on 802.1p Priority VLAN ID MAC Address Ether Type IPv4 Address DSCP Protocol Type TCP/UDP Port Number User-Defined Packet Content IPv6 Address IPv6 Flow Label IPv6 Traffic Class Time-based ACL CPU Interface Filtering |
Security |
SSH v2 SSL v1/v2/v3 Port Security Up to 64 MAC addresses per port/VLAN Broadcast/Multicast/Unicast Storm Control Traffic Segmentation D-Link Safeguard Engine NetBIOS/NetBEUI Filtering DHCP Server Screening ARP Spoofing Prevention DoS Attack Prevention5 BPDU Attack Protection |
AAA |
802.1X: Port-based Access Control Host-based Access Control Identity-driven Policy (VLAN, ACL or QoS) Assignment Authentication Database Failover Web-based Access Control (WAC): Port-based Access Control Host-based Access Control Identity-driven Policy (VLAN, ACL or QoS) Assignment Authentication Database Failover MAC-based Access Control (MAC): Port-based Access Control Host-based Access Control Identity-driven Policy (VLAN, ACL or QoS) Assignment Authentication Database Failover Japan Web-based Access Control (Host-based JWAC)6 Guest VLAN Microsoft NAP Support 802.1X NAP Support DHCP NAP RADIUS Accounting TACACS+ Accounting4 RADIUS and TACACS authentication for switch access 4 Level User Account |
D-Link Green Features |
Compliant with RoHS Power Saving by Link Status Power Saving by Cable Length Time-based PoE7 |
Operation, Administration & Management (OAM) | Cable Diagnostics |
Management |
Web-based GUI8 Command Line Interface (CLI) Telnet Server8 Telnet Client8 TFTP Client8 ZModem SNMP v1/v2c/v3 SNMP Traps System Log8 RMON v1: Supports 1,2,3,9 groups RMON v2: Supports ProbeConfig group LLDP BootP/DHCP Client DHCP Auto-Configuration DHCP Relay DHCP Client Option 12 DHCP Relay Option 82 Flash File System Multiple Images Multiple Configurations CPU Monitoring Debug Command SNTP Password Recovery Password Encryption Trusted Host Microsoft NLB (Network Load Balancing) Support ICMPv6 |
MIB |
RFC 1213 MIB II RFC 4188 Bridge MIB RFC 1907 SNMPv2 MIB RFC 1757, 2819 RMON MIB RFC 2021 RMONv2 MIB RFC 1398, 1643, 1650, 2358, 2665 Ether-like MIB RFC 2674 802.1p MIB RFC 2233, 2863 IF MIB RFC 2618 RADIUS Authentication Client MIB RFC 2620 RADIUS Accounting Client MIB RFC 2925 PING & TRACEROUTE MIB RFC 2674, 4363 802.1p MIB RFC1065, 1066, 1155, 1156, 2578 MIB Structure9 RFC1212 Concise MIB Definitions9 RFC1215 MIB Traps Convention9 RFC1157, 2571-2576 SNMP MIB9 RFC4022 MIB for TCP9 RFC4113 MIB for UDP9 RFC4293 IPv6 SNMP Mgmt Interface MIB9 |
RFC Standard Compliance |
RFC 768 UDP RFC 791 IP RFC 792, 2463, 4443 ICMP RFC 793 TCP RFC 826 ARP RFC 3513, 4291, IPv6 Addressing Architecture RFC 2893, 4213 IPv4/IPv6 dual stack function RFC 2463, 4443 ICMPv6 RFC 2462, 4862 IPv6 Stateless Address Auto Configuration RFC 2464 IPv6 Ethernet and definition RFC 1981 Path MTU Discovery for IPv6 RFC 2460 IPv6 RFC 2461, 4861 Neighbor Discovery for IPv6 RFC 783 TFTP RFC 854 Telnet RFC 951, 1542 BootP RFC 2068 HTTP RFC 1492 TACACS RFC 2866 RADIUS Accounting RFC 2474, 3260 DiffServ RFC 1321, 2284, 2865, 3580, 3748 Extensible Authentication Protocol (EAP) RFC 2571, 2572, 2573, 2574, SNMP IPv6 Ready Logo Phase 2 |
Enhanced Image (EI) Features | |
L2 Features | Ethernet Ring Protection Switching (ERPS) |
VLAN |
Double VLAN (Q-in-Q) Port-based Q-in-Q |
L3 Features |
Max. 16 IP Interfaces ARP Proxy10 IPv6 Neighbour Discovery (ND) |
L3 Routing |
Static Route 512 static routing entries for IPv4/IPv6 |
Access Control List (ACL) | Supports up to 512 egress access rules |
Security |
IP-MAC-Port Binding ARP Packet Inspection IP Packet Inspection DHCP Snooping IPv6 ND Snooping Support up to 510 Address Binding Entries per Device |
AAA | Compound Authentication |
Operation, Administration & Management (OAM) |
802.3ah Ethernet Link OAM 802.3ah D-Link Extension: D-link Unidirectional Link Detection (DULD)10 802.1ag Connectivity Fault Management (CFM) ITU-T Y.173110 |
Management |
sFlow Trusted Host |