D-Link DGS-3120-48PC – 48-Port Gigabit Layer 2 Managed PoE Switch with 4 Combo SFP Ports & 40G Stacking
Overview:
• The D-Link DGS-3120-48PC is an xStack Layer 2 Managed Stackable Gigabit PoE Switch designed for enterprise, campus, CCTV/IP surveillance, VoIP, wireless access points, Metro Ethernet, and triple-play network deployments.
• It provides 44 × 10/100/1000BASE-T Gigabit PoE ports and 4 × combo 10/100/1000BASE-T/SFP Gigabit ports, giving a total of 48 Gigabit PoE-capable access ports with flexible copper or fiber uplink options.
• The switch supports IEEE 802.3af and IEEE 802.3at Power over Ethernet, with 370W default PoE power budget, expandable up to 740W using DPS-700 redundant power supply.
• It supports physical stacking up to 6 units, virtual stacking up to 32 units using D-Link Single IP Management, and up to 40Gbps full-duplex stacking bandwidth.
• The DGS-3120-48PC delivers 136Gbps switching capacity, 101.19Mpps packet forwarding rate, 2MB packet buffer memory, 32MB flash memory, and jumbo frame support up to 13K bytes.
• It includes advanced Layer 2, VLAN, QoS, ACL, security, OAM, IPv6, multicast, and management features suitable for professional and secure managed network deployments.
Key Features:
• 48-Port Gigabit Layer 2 Managed PoE Switch
• 44 × 10/100/1000BASE-T Gigabit PoE Ports
• 4 × Combo 10/100/1000BASE-T/SFP Ports
• IEEE 802.3af/802.3at PoE Support
• 370W PoE Power Budget
• Up to 740W PoE Budget with DPS-700 RPS
• 136Gbps Switching Capacity
• 101.19Mpps Packet Forwarding Rate
• 2MB Packet Buffer Memory
• 32MB Flash Memory
• Jumbo Frame up to 13K Bytes
• Physical Stacking up to 6 Units
• Virtual Stacking up to 32 Units
• Up to 40Gbps Stacking Bandwidth
• D-Link Single IP Management
• Optional Redundant Power Supply Support via DPS-700
• STP, RSTP, MSTP, BPDU Filtering, and Root Restriction
• 802.3ad Link Aggregation
• IGMP Snooping and MLD Snooping
• VLAN, Voice VLAN, MAC-Based VLAN, ISM VLAN, Asymmetric VLAN, Private VLAN, and VLAN Trunking
• Advanced QoS with 8 Queues per Port
• ACL with up to 1.5K Ingress Access Rules
• SSH v2, SSL, Port Security, Storm Control, and D-Link Safeguard Engine
• 802.1X, Web-Based Access Control, MAC-Based Access Control, Guest VLAN, RADIUS, TACACS, and Microsoft NAP
• Time-Based PoE and D-Link Green Power Saving
• Web GUI, CLI, Telnet, SNMP, RMON, LLDP, DHCP Relay, Multiple Images, and Multiple Configurations
• Enhanced Image Support for ERPS, Q-in-Q, Static Route, IMPB, OAM, IPv6 Management, sFlow, and PPPoE Circuit ID
• IPv6 Ready Logo Phase 2
• 19-Inch Rack-Mount, 1U Design
• Smart Fan Ventilation
Technical Specifications:
• Product Type: Gigabit Layer 2 Managed Stackable PoE Switch
• Brand: D-Link
• Model: DGS-3120-48PC
• Series: DGS-3120 Series
• Port Configuration: 44 × 10/100/1000BASE-T PoE + 4 × Combo 10/100/1000BASE-T/SFP
• Gigabit RJ45 PoE Ports: 44 Ports
• Combo RJ45/SFP Ports: 4 Ports
• PoE Standard: IEEE 802.3af / IEEE 802.3at
• PoE Power Budget: 370W
• PoE Budget with RPS: 740W with DPS-700 RPS
• Optional Redundant Power Supply: DPS-700
• Console Port: RJ-45
• Stacking Ports: 2
• SD Card Slot: 1
• Switching Capacity: 136Gbps
• 64-Byte Packet Forwarding Rate: 101.19Mpps
• Packet Buffer Memory: 2MB
• Flash Memory: 32MB
• Jumbo Frame: Up to 13K Bytes
• Heat Dissipation: 1761.265BTU/hr with 370W PoE Load / 3310.428BTU/hr with 740W PoE Load
• Power Input: 100 to 240V AC, 50 to 60Hz Internal Universal Power Supply
• Maximum Power Consumption: 516.5W with 370W PoE Load / 970.8W with 740W PoE Load
• Dimensions: 440 × 380 × 44mm
• Ventilation: Smart Fan, High Speed above 40°C, Low Speed below 35°C
• Operating Temperature: 0°C to 50°C
• Storage Temperature: -40°C to 70°C
• Operating Humidity: 10% to 90% RH
• Storage Humidity: 5% to 90% RH
• EMI Standards: FCC Class A, CE Class A, VCCI Class A, IC, C-Tick
• Safety Standards: CB, cUL, LVD
• Certification: IPv6 Ready Logo Phase 2
• Stackability: Physical Stacking up to 6 Units, Virtual Stacking up to 32 Units, up to 40Gbps Stacking Bandwidth
• Layer 2 Features: 16K MAC Address Table, 802.3x Flow Control, HOL Blocking Prevention, Jumbo Frame up to 13K Bytes, STP, RSTP, MSTP, BPDU Filtering, Root Restriction, Loopback Detection, 802.3ad Link Aggregation, Port Mirroring, Flow-Based Mirroring, and RSPAN Mirroring
• Link Aggregation: Up to 32 Groups per Device, 8 Gigabit Ports per Group
• L2 Multicasting: IGMP Snooping v1/v2/v3, 1024 IGMP Groups, Host-Based IGMP Snooping Fast Leave, Limited IP Multicast, IGMP Filtering Profiles, MLD Snooping v1/v2, 1024 MLD Groups, and Host-Based MLD Snooping Fast Leave
• VLAN Features: Up to 4K VLAN Groups, GVRP, up to 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, and VLAN Trunking
• QoS Features: 802.1p, 8 Queues per Port, Strict Priority, WRR, Strict + WRR, CoS Based on Switch Port, VLAN ID, 802.1p Priority, MAC Address, IPv4 Address, DSCP, Protocol Type, TCP/UDP Port, User-Defined Packet Content, IPv6 Address, IPv6 Traffic Class, IPv6 Flow Label, Remarking, and Bandwidth Control
• Bandwidth Control: Port-Based and Flow-Based Ingress/Egress Bandwidth Control with 64Kbps Minimum Granularity
• ACL Features: Up to 1.5K Ingress Access Rules, ACL Based on 802.1p Priority, VLAN ID, MAC Address, EtherType, IPv4 Address, DSCP, Protocol Type, TCP/UDP Port Number, User-Defined Packet Content, IPv6 Address, IPv6 Flow Label, IPv6 Traffic Class, Time-Based ACL, and CPU Interface Filtering
• Security Features: 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, and BPDU Attack Protection
• AAA Features: 802.1X Port-Based Access Control, Host-Based Access Control, Identity-Driven Policy Assignment, Authentication Database Failover, Web-Based Access Control, MAC-Based Access Control, Japan Web-Based Access Control, Guest VLAN, Microsoft NAP, RADIUS Accounting, RADIUS and TACACS Authentication, and 4-Level User Account
• Green Features: RoHS Compliance, Power Saving by Link Status, Power Saving by Cable Length, and Time-Based PoE
• OAM Features: Cable Diagnostics, 802.3ah Ethernet Link OAM, D-Link Unidirectional Link Detection, 802.1ag Connectivity Fault Management, and ITU-T Y.1731 with Enhanced Image
• Management Features: Web GUI IPv4, CLI, Telnet Server/Client IPv4, TFTP Client, ZModem, SNMP v1/v2c/v3, SNMP Traps, System Log, RMON v1/v2, LLDP, BootP/DHCP Client, DHCP Auto-Configuration, DHCP Relay Option 12/82, Flash File System, Multiple Images, Multiple Configurations, CPU Monitoring, Debug Command, SNTP, Password Recovery, Password Encryption, Trusted Host, and Microsoft NLB Support
• Enhanced Image Features: ERPS, Double VLAN Q-in-Q, Static Route, up to 16 IP Interfaces, ARP Proxy, IPv6 Neighbor Discovery, IP-MAC-Port Binding, ARP Packet Inspection, IP Packet Inspection, DHCP Snooping, IPv6 ND Snooping, Compound Authentication, Ethernet OAM, SNMP over IPv6, Web GUI IPv6, Telnet IPv6, TFTP IPv6, ICMPv6, and sFlow
• Optional Management Software: DV-600S, DV-600P, DV-601S, DV-601P
• Optional Stacking Cables: DEM-CB50, DEM-CB100
• Optional RPS: DPS-700, DPS-800, DPS-900
• Optional SFP Transceivers: DEM-310GT, DEM-311GT, DEM-312GT2, DEM-314GT, DEM-315GT, DEM-210, DEM-211
• Optional WDM SFP Transceivers: DEM-330T, DEM-330R, DEM-331T, DEM-331R, DEM-220T, DEM-220R
• Ordering Options: DGS-3120-48PC/SI and DGS-3120-48PC/EI
Applications:
• Enterprise and campus access networks
• CCTV and IP surveillance PoE systems
• IP camera and NVR network deployments
• VoIP phone networks
• Wireless access point networks
• Metro Ethernet access networks
• Triple-play networks for voice, video, and data
• IPTV and multicast service environments
• Distribution cabinets and network racks
• High-density managed Gigabit PoE deployments
• Networks requiring stacking, VLAN, QoS, ACL, OAM, IPv6, and secure authentication
Connect Gates Recommendation:
• Connect Gates recommends the D-Link DGS-3120-48PC for projects that require a high-density Gigabit PoE managed switch with stacking capability and strong Layer 2 security.
• It is an excellent choice for CCTV/IP surveillance, wireless access points, VoIP, campus networks, enterprise access layers, Metro Ethernet, and triple-play service environments.
• The 44 Gigabit PoE ports, 4 combo SFP ports, 370W PoE budget, expandable 740W PoE with DPS-700, 136Gbps switching capacity, 40G stacking, ACL, OAM, IPv6 support, and D-Link Single IP Management make it suitable for critical managed PoE deployments.
• For best performance, Connect Gates recommends calculating the total PoE load before installation, reserving combo SFP ports for uplinks, and using DPS-700 RPS where higher uptime or expanded PoE budget is required.