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DGS-3120-48TC
- Description:
- D-Link 44 Gigabit electrical ports + 4 Gigabit optical multiplexing ports, switching capacity: 336G/3.36T, packet forwarding rate: 132Mpps/166Mpps, pure three-layer network management switch, support DHCP server, rack type　
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DGS-3120-48TC Overview
DGS-3120-48TC is a high-performance, Layer 2+ network switch engineered with a robust architecture that maximizes throughput and network reliability. Designed with flexibility in mind, it offers a dependable AC power supply option and delivers 48 high-speed Ethernet ports alongside dedicated SFP uplink ports to ensure seamless connectivity in diverse network environments.
Featuring stacking capabilities for simplified scalability, DGS-3120-48TC supports growing network demands while maintaining low latency and consistent performance. Ideal for enterprise campuses, data centers, and SMB environments, its architecture and efficient port configuration make it a reliable solution for secure and resilient network operations.
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Explore more options from Switches or explore other D-Link products.
DGS-3120-48TC Specifications
| Product Type | Switch |
| Power Source | AC Power Supply |
| Layer Supported | Layer 2 |
| Form Factor | Rack-mount |
| Power Consumption | 40W |
| Number Of Ethernet Ports | 24–48 Ports |
| Number Of Downlink Ports | 48 Ports |
| Manageable | Managed |
| Ethernet Technology | 10/100/1000 |
| Media Type Supported | Combo |
| Redundant Power Supply Supported | No |
| Manufacturer Part Number | DGS-3120-48TC |
| Uplink Configuration | 1G |
| IOS | LAN Lite |
| POE Support | Non POE |
| SFP Ports | 4 SFP Ports |
| Memory | 256 MB |
| Rack Units | 1 RU |
| Interface Ports | 10/100/1000 |
| Port/Expansion Slot Details | 48 x 10/100/1000 ports and 4 x 10/100/1000 SFP slots |
| Flash Memory | 64 MB |
| Switching Capacity | 104 Gbps |
| Switching Capacity With Stacking | N/A |
| Product Name | D-Link DGS-3120-48TC Gigabit Switch |
| Height | 1.75 inches |
| Width | 17.3 inches |
| Depth | 11.42 inches |
| Weight | 16 lbs |
DGS-3120-48TC Use Case
Enterprise Campus Core/Distribution Backbone with DGS-3120-48TC-D-Link
In a multi-building corporate campus, IT deploys the rack-mount DGS-3120-48TC-D-Link (44 Gigabit electrical + 4 Gigabit SFP uplinks) as the core/distribution switch. Leveraging its pure L3 routing, 336 Gbps switching capacity and 132 Mpps forwarding rate, the switch segments traffic into VLANs, runs OSPF for dynamic failover and enforces QoS for VoIP and video. Outcome: sub-millisecond latency, high availability across 3-tier architecture, simplified network management and predictable bandwidth for mission-critical applications.
Data Center Top-of-Rack for Virtualization Clusters
A mid-sized data center installs the DGS-3120-48TC-D-Link at each rack to aggregate hypervisor hosts and storage arrays. With 44×1 GbE ports and 4×1 GbE fiber uplinks, 336 Gbps switching capacity (3.36 Tbps full duplex) and 166 Mpps forwarding, the switch delivers low-latency east-west traffic and supports VLAN trunking for multi-tenant isolation. Outcome: maximized VM density, streamlined VLAN provisioning, and line-rate throughput for database replication and backup operations.
Remote Branch Office Deployment with Built-In DHCP and Fiber Uplinks
A nationwide retail chain equips each branch closet with the rack-mounted DGS-3120-48TC-D-Link, enabling 44 Gigabit copper ports for POS, Wi-Fi APs and surveillance cameras plus 4 Gigabit SFP ports for fiber WAN. The integrated DHCP server auto-provisions endpoints on segmented VLANs and enforces ACLs at Layer 3. Outcome: plug-and-play rollout in under 30 minutes, centralized policy enforcement, resilient fiber connectivity and reduced onsite IT overhead.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Depth | 11.3 inches | 11.42 inches | 11 inches | 11.42 inches | 11 inches |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Flash Memory | 64 MB | 64 MB | 32 MB | 32 MB | 64 MB |
| Form Factor | Rack-mount | Rack-mount | Desktop / Rack-mount | Rack-mount | Rack-mount |
| Height | 1.73 inches | 1.75 inches | 1.75 inches | 1.73 inches | 1.73 inches |
| Interface Ports | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| IOS | LAN Lite | LAN Lite | LAN Lite | LAN Base | LAN Lite |
| Layer Supported | Layer 2 | Layer 2 | Layer 2 | Layer 2 | Layer 2 |
| Manageable | Managed | Managed | Managed | Managed | Managed |
| Manufacturer Part Number | DGS-3130-30TS | DGS-3120-48TC | DGS-3120-24TC | DGS-3000-52L | DGS-3130-30S |
| Media Type Supported | Twisted Pair / Fiber / Combo | Combo | Twisted Pair / Fiber | Twisted Pair / Fiber | Twisted Pair / Fiber / Combo |
| Memory | 256 MB | 256 MB | 128 MB | 128 MB | 256 MB |
| Number of Downlink Ports | 24 Ports | 48 Ports | 24 Ports | 48 Ports | 24 Ports |
| Number of Ethernet Ports | 24–48 Ports | 24–48 Ports | 12–24 Ports | 24–48 Ports | 24–48 Ports |
| POE Support | Non POE | Non POE | Non POE | Non POE | Non POE |
| Port/Expansion Slot Details | 24 x 10/100/1000 RJ45 ports, 4 x SFP ports | 48 x 10/100/1000 ports and 4 x 10/100/1000 SFP slots | 24 x RJ45 ports, 4 x SFP ports | 48 x 10/100/1000 ports, 4 x 1G SFP Combo ports | 24 x 10/100/1000 Ethernet ports, 4 x 10/100/1000 SFP ports, stacking module ports |
| Power Consumption | N/A | 40W | 28 W | N/A | 25 W |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply |
| Product Name | DGS-3130-30TS Gigabit Smart Switch | D-Link DGS-3120-48TC Gigabit Switch | DGS-3120-24TC Smart Managed Switch | D-Link DGS-3000-52L Smart Managed Switch | D-Link DGS-3130-30S Stackable Managed Gigabit Switch |
| Product Type | Switch | Switch | Switch | Switch | Switch |
| Rack Units | 1 RU | 1 RU | 1 RU | 1 RU | 1 RU |
| Redundant Power Supply Supported | No | No | No | No | No |
| SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports | 4 SFP Ports |
| Switching Capacity | 56 Gbps | 104 Gbps | 48 Gbps | 104 Gbps | 56 Gbps |
| Switching Capacity with Stacking | 112 Gbps | N/A | 96 Gbps | 104 Gbps | 112 Gbps |
| Uplink Configuration | 1G | 1G | 1G | 1G | 1G |
| Weight | 12 lbs | 16 lbs | 10 lbs | 13.2 lbs | 12 lbs |
| Width | 17.3 inches | 17.3 inches | 17.5 inches | 17.32 inches | 17.3 inches |
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Questions & Answers
Q
What port configuration does the D-Link DGS-3120-48TC offer?
A
The DGS-3120-48TC provides 44 10/100/1000 Mbps electrical RJ45 ports and 4 Gigabit SFP optical multiplexing ports for flexible copper and fiber connectivity.
Q
What is the switching capacity of the DGS-3120-48TC switch?
A
This switch delivers up to 336 Gbps of switching capacity and a 3.36 Tbps backplane to handle high-throughput traffic without bottlenecks.
Q
What packet forwarding rate can I expect from the DGS-3120-48TC?
A
It supports a packet forwarding rate of up to 132 Mpps for 64-byte packets and 166 Mpps for 512-byte packets, ensuring smooth data flow.
Q
Does the DGS-3120-48TC support Layer 3 routing?
A
Yes. The DGS-3120-48TC is a pure Layer 3 managed switch with static routing, RIP, OSPF, and multicast routing capabilities.
Q
Can the DGS-3120-48TC operate as a DHCP server?
A
Yes. It includes an integrated DHCP server to automatically assign IP addresses and streamline network configuration.
Q
Is the DGS-3120-48TC rack-mountable?
A
Yes. The switch features a 1U rack-mount design with included brackets for standard 19-inch rack installation.
Q
What management interfaces are available on the DGS-3120-48TC?
A
Management options include a web-based GUI, CLI (Telnet/SSH), SNMP v1/2/3, RMON, and D-Link’s Network Assistant utility.
Q
Which optical modules are compatible with the DGS-3120-48TC SFP ports?
A
The 4 SFP ports support standard 1000BASE-SX/LX/LHX and DWDM optical transceivers for multimode or single-mode fiber links.
Q
What VLAN and QoS features does the DGS-3120-48TC support?
A
It supports up to 4,094 VLANs, 802.1Q tagging, QinQ, and advanced QoS including DSCP, 4 priority queues, and traffic shaping.
Q
How does the DGS-3120-48TC enhance network security?
A
Security features include ACLs (L2–L4), 802.1X port-based authentication, DHCP snooping, IP source guard, and storm control.
Q
Does the DGS-3120-48TC support IPv6?
A
Yes. The switch offers full IPv6 support for management, IPv6 static routing, RIPng, OSPFv3, and MLD Snooping.
Q
What energy-saving technologies are built into the DGS-3120-48TC?
A
It incorporates D-Link Green features such as IEEE 802.3az Energy Efficient Ethernet, fan control, and port standby to reduce power consumption.
Q
What redundancy and high-availability features are available?
A
It supports VRRP, STP/RSTP/MSTP, Link Aggregation (LACP), and redundant power feed for uninterrupted operations.
Q
What warranty and support options come with the DGS-3120-48TC?
A
D-Link provides a limited lifetime warranty on hardware, 5-year advance replacement, and 24/7 technical support.
Q
Which environments and use cases suit the DGS-3120-48TC?
A
Ideal for enterprise campus cores, distribution layers, data centers, and SMB aggregation where high port density and Layer 3 routing are required.
Q
How do I configure the DHCP server on the DGS-3120-48TC?
A
Access the web GUI or CLI, navigate to DHCP Server settings, enable the server, define the IP pool, subnet mask, gateway, and DNS parameters, then apply.
