D-Link DGS-3120-24PC – 24-Port Gigabit Layer 2 Managed PoE Switch with 4 Combo SFP Ports & 40G Stacking
Overview:
• The D-Link DGS-3120-24PC is a Gigabit Layer 2 Managed PoE Switch designed for enterprise, campus networks, CCTV/IP surveillance, VoIP, wireless access points, Metro Ethernet, and triple-play service deployments.
• It provides 20 × 10/100/1000BASE-T Gigabit PoE ports, 4 × combo 10/100/1000BASE-T/SFP ports, and 2 × 10G CX4 stacking ports for high-performance network access and backbone stacking.
• The switch supports IEEE 802.3af and IEEE 802.3at PoE with a 370W power budget, expandable up to 740W when used with the DPS-700 redundant power supply.
• The DGS-3120 Series supports Standard Image and Enhanced Image software options; Standard Image includes advanced QoS, traffic shaping, L2 multicast, and robust security, while Enhanced Image adds ERPS, Q-in-Q, Ethernet OAM, Static Route, IMPB, sFlow, and IPv6 features.
• It delivers 88Gbps switching capacity, 65.48Mpps packet forwarding rate, 2MB packet buffer memory, 32MB flash memory, and jumbo frame support up to 13K bytes.
• It supports physical stacking up to 6 units, virtual stacking up to 32 units using D-Link Single IP Management, and up to 40G stacking bandwidth.
Key Features:
• 24-Port Gigabit Layer 2 Managed PoE Switch
• 20 × 10/100/1000BASE-T Gigabit PoE Ports
• 4 × Combo 10/100/1000BASE-T/SFP Ports
• 2 × 10G CX4 Stacking Ports
• IEEE 802.3af/802.3at PoE Support
• 370W PoE Power Budget
• Up to 740W PoE Budget with DPS-700 RPS
• 88Gbps Switching Capacity
• 65.48Mpps 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 40G 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, 802.1Q, GVRP, Voice VLAN, MAC-Based VLAN, ISM 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, Dual Image, and Dual Configuration
• 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
• 4 Smart Fans
Technical Specifications:
• Product Type: Gigabit Layer 2 Managed PoE Switch with 40G Stacking
• Brand: D-Link
• Model: DGS-3120-24PC
• Series: DGS-3120 Series
• Port Configuration: 20 × 10/100/1000BASE-T + 4 × Combo 10/100/1000BASE-T/SFP + 2 × 10G CX4
• Gigabit RJ45 PoE Ports: 20 Ports
• Combo RJ45/SFP Ports: 4 Ports
• 10G CX4 Stacking Ports: 2 Ports
• Optional Redundant Power Supply: DPS-700
• Console Port: RJ-45
• Stacking Ports: 2
• SD Card Slot: 1
• Switching Capacity: 88Gbps
• 64-Byte Packet Forwarding Rate: 65.48Mpps
• Packet Buffer Memory: 2MB
• Flash Memory: 32MB
• PoE Standard: IEEE 802.3af / IEEE 802.3at
• PoE Power Budget: 370W
• PoE Budget with RPS: 740W with DPS-700 RPS
• MTBF: 282,541 Hours
• Acoustic Level: Max 52.5dB / Min 38.1dB
• Heat Dissipation: 1646.0BTU/hr with 370W PoE Load / 3188.7BTU/hr with 740W PoE Load
• Power Input: 100 to 240V AC, 50 to 60Hz, Internal Universal Power Supply
• Maximum Power Consumption: 482.7W with 370W PoE Load / 935.1W with 740W PoE Load
• Dimensions: 440 × 310 × 44mm
• Weight: 5.423kg
• Ventilation: 4 Smart Fans, 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 40G Stacking Bandwidth, D-Link Single IP Management
• 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, IGMP Snooping Querier, Limited IP Multicast, IGMP Filtering Profiles, MLD Snooping v1/v2, 1024 MLD Groups, MLD Snooping Querier, and 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 QoS, 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 for Web GUI, 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, SSH Server, 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: Double VLAN Q-in-Q, ERPS, Static Route, up to 16 IP Interfaces, ARP Proxy, IPv6 Neighbor Discovery, up to 512 Static Routes, IP-MAC-Port Binding, ARP Packet Inspection, IP Packet Inspection, DHCP Snooping, IPv6 ND Snooping, Compound Authentication, IPv6 WAC/JWAC, Ethernet OAM, SNMP over IPv6, SSH CLI IPv6, Syslog IPv6, sFlow v5, PPPoE Circuit ID Tag Insertion, Telnet IPv6, and TFTP IPv6
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
• Managed Gigabit PoE deployments requiring stacking and redundant power
• Networks requiring high uptime, VLAN, QoS, ACL, OAM, IPv6, and secure user authentication
Connect Gates Recommendation:
• Connect Gates recommends the D-Link DGS-3120-24PC for projects that require a professional Gigabit PoE managed switch with high PoE budget, stacking capability, and reliable Layer 2 security.
• It is a strong choice for CCTV/IP surveillance, wireless access points, VoIP, campus networks, enterprise access layers, and Metro Ethernet environments.
• The 20 Gigabit PoE ports, 4 combo SFP ports, 2 × 10G CX4 stacking ports, 370W PoE budget, expandable 740W PoE with DPS-700, 40G stacking, ACL, IMPB, OAM, IPv6 support, and D-Link Single IP Management make it suitable for critical managed network 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.