xStack Gigabit L2 Stackable Managed Switches

DGS‑3120 Series

  • Product Status: Live

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Interface

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

 

4 Fan runs at a low speed by default. When operating temperature exceeds 40 ˚C, the fan switches to high speed mode until the temperature drops below 35 ˚C.
5 Supported in firmware R2.0 SI and above.
6 Supported in firmware R3.0 SI and above.
7 Supported in DGS-3120-24PC and DGS-3120-48PC only.
8 Support for IPv6 in firmware R3.0 SI and above.
9 Supported in firmware R2.0 SI and above.
10 Supported in firmware R2.0 EI and above.

FAQ

  • How to Enable SHA-1 Encryption User Mode - DGS-3120-Series Read Answer
  • How to Configure Stacking - DGS-3120-Series Read Answer

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