D-Link DGS-3420-28SC – 20-Port SFP xStack L2+ Managed Stackable Gigabit Switch with 4 Combo Ports & 4 × 10G SFP+ Uplinks
Overview:
• The D-Link DGS-3420-28SC is an xStack L2+ Managed Stackable Gigabit Switch designed for enterprise, SMB, service provider, FTTB, aggregation, and high-density fiber access networks.
• It provides 20 × SFP ports, 4 × combo 10/100/1000BASE-T/SFP ports, and 4 × 10G SFP+ uplink ports for flexible fiber and copper connectivity.
• The switch is part of the DGS-3420 Series, offering high Gigabit port density, 10-Gigabit SFP+ uplinks, advanced Layer 2+/Layer 3 routing features, multi-layer QoS, security, and redundant power support.
• The DGS-3420-28SC supports physical stacking up to 12 units, virtual stacking up to 32 devices using D-Link Single IP Management, and up to 40Gbps stacking bandwidth.
• It delivers 128Gbps switch fabric, 95.24Mpps packet forwarding rate, 16K MAC address table, 2MB packet buffer, 13,000-byte jumbo frame, IPv4/IPv6 routing support, and IPv6 Ready Logo Phase 2 certification.
• It is suitable for Fiber-to-the-Building networks, enterprise aggregation, backbone connectivity, CCTV fiber backbone, telecom cabinets, and managed fiber distribution deployments.
Key Features:
• xStack L2+ Managed Stackable Gigabit Switch
• 20 × SFP Ports
• 4 × Combo 10/100/1000BASE-T/SFP Ports
• 4 × 10G SFP+ Uplink Ports
• 128Gbps Switch Fabric
• 95.24Mpps Packet Forwarding Rate
• 16K MAC Address Table
• 2MB Packet Buffer
• Jumbo Frame up to 13,000 Bytes
• Physical Stacking up to 12 Units
• Virtual Stacking up to 32 Devices
• Up to 40Gbps Stacking Bandwidth
• D-Link Single IP Management
• Optional Redundant Power Supply Support
• RJ-45 Console Port
• 10/100BASE-T Management Port
• Alarm Port and SD Card Slot
• IPv4 and IPv6 Routing Support
• IPv6 Ready Logo Phase 2
• STP, RSTP, MSTP, ERPS, Loopback Detection, and Link Aggregation
• VLAN, 802.1Q, GVRP, Q-in-Q, MAC-Based VLAN, and VLAN Trunking
• Advanced QoS with 8 Queues per Port
• L2/L3/L4 Access Control List Support
• 802.1X, Web-Based Access Control, MAC-Based Access Control, RADIUS, and TACACS+
• IP-MAC-Port Binding, DHCP Snooping, ARP Spoofing Prevention, BPDU Attack Protection, and D-Link Safeguard Engine
• OAM Support with 802.3ah Ethernet Link OAM, DULD, PTP, Cable Diagnostics, CFM, and Y.1731
• Web GUI, CLI, Telnet, SNMP, RMON, sFlow, LLDP, DHCP Relay, Multiple Images, and CPU Monitoring
• D-Link Green 3.0 Technology
• 19-Inch Rack-Mount, 1U Design
Technical Specifications:
• Product Type: xStack L2+ Managed Stackable Gigabit Switch
• Brand: D-Link
• Model: DGS-3420-28SC
• Series: DGS-3420 Series
• Port Configuration: 20 × SFP + 4 × Combo 10/100/1000BASE-T/SFP + 4 × 10G SFP+
• SFP Ports: 20 Ports
• Combo RJ45/SFP Ports: 4 Ports
• 10G SFP+ Ports: 4 Ports
• Optional Redundant Power Supply: DPS-500
• Console Port: RJ-45
• Management Port: 10/100BASE-T
• Alarm Port: 1
• SD Card Slot: 1
• Switch Fabric: 128Gbps
• Packet Forwarding Rate: 95.24Mpps
• Packet Buffer: 2MB
• MAC Address Table: 16K Entries
• IPv4 Routing Table: 1K Entries
• IPv6 Routing Table: 512 Entries
• IPv4 Forwarding Table: 2K Entries
• IPv6 Forwarding Table: 1K Entries
• Jumbo Frame Size: 13,000 Bytes
• MTBF: 298,747 Hours
• Acoustics: Max 47.4dB
• Heat Dissipation: 145.2BTU/hr
• Power Input: 100 to 240V AC, 50/60Hz
• Maximum Power Consumption: 42.6W
• Dimensions: 441 × 310 × 44mm
• Weight: 4.06kg
• Ventilation: Temperature Controlled Smart Fan
• 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
• Emission 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 12 Units, Virtual Stacking up to 32 Devices, Duplex Chain/Ring Topology, Up to 40Gbps Stacking Bandwidth
• Layer 2 Features: 16K MAC Address Table, 802.3x Flow Control, HOL Blocking Prevention, Jumbo Frame up to 13,000 Bytes, IGMP Snooping, MLD Snooping, Loopback Detection, STP, RSTP, MSTP, BPDU Filtering, Root Restriction, Link Aggregation, Port Mirroring, RSPAN, L2 Protocol Tunneling, and ERPS
• Link Aggregation: Up to 32 Groups per Device, 8 Gigabit Ports or 2 × 10G Ports per Group
• VLAN Features: Up to 4K Static VLAN Groups, 255 Dynamic VLAN Groups, 802.1Q Tagged VLAN, 802.1v Protocol VLAN, GVRP, Double VLAN Q-in-Q, Port-Based Q-in-Q, MAC-Based VLAN, and VLAN Trunking
• Layer 3 Features: 256 IP Interfaces, Loopback Interface, IPv6 Tunneling, Proxy ARP, Gratuitous ARP, and VRRP
• Layer 3 Routing: 1K Routing Entries shared by IPv4/IPv6, up to 1K IPv4 Routes, 512 IPv6 Routes, 2K L3 Forwarding Entries, RIP v1/v2, RIPng, Policy-Based Routing, and Route Redistribution
• QoS Features: 802.1p QoS, 8 Queues per Port, Strict Queue, WRR, Strict + WRR, CoS Based on Switch Port, VLAN, 802.1p Priority, MAC Address, IPv4/IPv6 Address, DSCP, Protocol Type, TCP/UDP Port, IPv6 Traffic Class, IPv6 Flow Label, User-Defined Packet Content, Bandwidth Control, Flow Statistics, CIR, Time-Based QoS, and WRED
• ACL Features: Ingress ACL up to 6 Profiles and 256 Rules per Profile, Egress ACL up to 4 Profiles and 128 Rules per Profile, ACL Based on 802.1p Priority, VLAN ID, MAC Address, Ether Type, IPv4/IPv6 Address, DSCP, Protocol Type, TCP/UDP Port Number, IPv6 Traffic Class, IPv6 Flow Label, User-Defined Packet Content, ACL Statistics, and Time-Based ACL
• Security Features: SSH v2, SSL v1/v2/v3, Port Security, Broadcast/Multicast/Unicast Storm Control, Traffic Segmentation, IP-MAC-Port Binding, ARP Packet Inspection, IP Packet Inspection, DHCP Snooping, DHCPv6 and NDP Snooping, D-Link Safeguard Engine, DHCP Server Screening, CPU Interface Filtering, ARP Spoofing Prevention, BPDU Attack Protection, Secure FTP, and NetBIOS/NetBEUI Filtering
• AAA Features: 802.1X, Port-Based Access Control, Host-Based Access Control, Dynamic VLAN Assignment, Web-Based Access Control, MAC-Based Access Control, Japan Web-Based Access Control, Microsoft NAP, Guest VLAN, RADIUS and TACACS+ Authentication, and 4-Level User Account
• Management Features: Web GUI, CLI, Telnet Server/Client, TFTP Client, ZModem, SNMP v1/v2c/v3, SNMP Trap, System Log, RMON v1/v2, sFlow, LLDP/LLDP-MED, BootP/DHCP Client, DHCP Auto-Configuration, DHCP Relay Option 60/61/82, DHCP Server, Flash File System, Multiple Images, Multiple Configurations, CPU Monitoring, Debug Command, SNTP, ICMPv6, DHCPv6 Client/Relay/Server, Trusted Host, MTU Setting, Microsoft NLB Support, and UDP Helper
• OAM Features: 802.3ah Ethernet Link OAM, D-Link Unidirectional Link Detection, IEEE1588 Precision Time Protocol, Cable Diagnostics, Connectivity Fault Management, and ITU-T Y.1731
• Green Features: Power Saving by Link Status, Cable Length Detection, LED Shutoff, Port Shutoff, System Hibernation Mode, and 802.3az Energy Efficient Ethernet
• Optional Management Software: DV-600S, DV-600P
• Optional SFP+ Transceivers: DEM-431XT, DEM-431XT-DD, DEM-432XT, DEM-432XT-DD, DEM-433XT, DEM-433XT-DD, DEM-434XT, DEM-435XT, DEM-435XT-DD, DEM-436XT-BXU, DEM-436XT-BXD
• Optional SFP Transceivers: DEM-310GT, DEM-311GT, DEM-312GT2, DEM-314GT, DEM-315GT, DEM-330T, DEM-330R, DEM-331T, DEM-331R, DEM-211, DEM-210, DEM-220T, DEM-220R, DGS-712
• Optional DAC Cables: DEM-CB100S, DEM-CB300S, DEM-CB700S
Applications:
• Fiber-to-the-Building FTTB networks
• Service provider aggregation networks
• Enterprise aggregation layer deployments
• SMB and enterprise backbone networks
• High-density fiber access networks
• CCTV fiber backbone and IP surveillance aggregation
• Data center and server farm uplinks
• Telecom cabinets and fiber distribution rooms
• Campus networks requiring stackable fiber switching
• Networks requiring physical stacking, virtual stacking, 10G uplinks, routing, VLAN, QoS, ACL, OAM, and advanced security
Connect Gates Recommendation:
• Connect Gates recommends the D-Link DGS-3420-28SC for projects that require high-density SFP fiber access with strong 10G SFP+ uplink and stacking capability.
• It is ideal for FTTB, service provider networks, enterprise aggregation, CCTV fiber backbone, telecom cabinets, and large managed networks where fiber connectivity is the main design requirement.
• The 20 SFP ports, 4 combo ports, 4 × 10G SFP+ uplinks, physical stacking up to 12 units, 128Gbps switch fabric, advanced L2+/L3 routing, and strong security features make it suitable for critical professional deployments.
• For best performance, Connect Gates recommends selecting the suitable SFP/SFP+ transceivers or DAC cables according to fiber distance, uplink design, stacking design, and project topology.