Gigabit Managed Layer 3 Switch


  • Product Status (DEU Revision A): End of Life

The DGS-3312SR is a versatile addition to D-Link’s Business and Enterprise Solutions line of products. The modular design of the DGS-3312SR allows it to function as a stand-alone backbone switch or as a high performance stacking master unit for the DES-3226SM, adding Layer 3 routing functions to your existing stack.

The DGS-3312SR is a versatile addition to D-Link’s Business and Enterprise Solutions line of products. The modular design of the DGS-3312SR allows it to function as a stand-alone backbone switch or as a high performance stacking master unit for the DES-3226SM, adding Layer 3 routing functions to your existing stack. The DGS-3312SR ships standard with (4) 10/100/1000Mbps/combo SFPs with (2) additional expansion module slots. Available expansion modules for the DGS-3312SR include: DEM-540 (4) port stacking module, DEM-340MG (4) port SFP module, and DEM-340T (4) port 10/100/1000Mbps module.


With a 24Gbps switching fabric and forwarding rate in excess of 17 million packets per second, the DGS-3312SR is an ideal solution for large workgroups or small to medium backbones. As a stand-alone switch the DGS-3312SR supports up to 16,000 MAC addresses, jumbo frames, and (8) hardware based priority queues. As a stacking master unit for up to (8) DES-3226SM units, the DGS-3312SR provides up to 9.6Gbps of available stacking bandwidth.

High Availability

The hardware and software features of the DGS-3312SR work together to allow customers to build affordable, high performance, and high availability networks. The DGS-3312SR unit supports the DPS-200, D-Link’s optional Redundant Power option, and the DPS-800 (2) slot rackmount chassis system. Other features of the DGS-3312SR include support for 802.3ad (Link Aggregation), 802.1d (Spanning Tree), and 802.1w (Rapid Spanning Tree) for increased network reliability and availability. The DGS-3312SR supports a variety of routing options including: static routes, RIPv1/v2, OSPFv2, PIM-DM, and DVMRP.

Network Management

The DGS-3312SR supports a variety of network management options including: Console, CLI, Telnet, Web, SNMPv1/v3, RMON, TFTP, Port Mirroring, BootP, and DHCP. The DGS-3312SR also supports a variety of advanced traffic management options including: 802.1x, Bandwidth Control, Broadcast Rate Limiting, and support for IGMPv1/v2 Snooping.

Advanced Enterprise Features

The DGS-3312SR implements a robust and consistent set of QoS/CoS, VLAN, and Security features. The DGS-3312SR includes support for up to (8) priority queues for 802.1p/TOS/DiffServ, with classification and marking based on MAC SA/DA, IP SA/DA, and/or TCP/UDP port numbers. Security features include: 802.1x (Port/MAC based authentication), and Access Control Lists based on MAC address, IP address, and/or TCP/UDP port numbers. The DGS-3312SR also has extensive support for GARP/GVRP, 802.1q, and port based VLANs for up to 255 static groups per device.
Technical Specifications 


Device Ports
  • 4 built-in 10/100/1000BASE-T ports
  • 4 built-in combo SFP (mini GBIC) *
  • RS-232 console port

* Use of the SFP will disable their corresponding built-in 10/100/1000BASE-T connections. These Gigabit ports can be configured for server/backbone attachments, or for switch stacking.

Number of Expansion Slots
  • 2

Port Modules (for expansion slots)
  • DEM-340MG: 4 SFP slots
  • DEM-340T: 4 10/100/1000BASE-T ports

Port Standard/Function Support
  • IEEE 802.3 10BASE-T/802.3u 100BASE-TX/802.3ab 1000BASE-T
  • ANSI/IEEE 802.3 NWay auto-negotiation
  • IEEE 802.3x Flow Control
  • Auto MDI/MDIX
  • Port mirroring

SFP (Mini GBIC) Support
  • IEEE 802.3z 1000BASE-LX (DEM-310GT transceiver)
  • IEEE 802.3z 1000BASE-SX (DEM-311GT transceiver)
  • IEEE 802.3z 1000BASE-LH (DEM-314GT transceiver)
  • IEEE 802.3z 1000BASE-ZX (DEM-315GT transceiver)

Forwarding Rate
  • 17.8Mpps (max.)

Switch Fabric
  • 24Gbps

Diagnostic LEDs

Per device:
  • Power
  • Console
  • RPS

Per RJ-45 port:
  • Speed
  • Link/Act

Per SFP port:
  • Link/Act


IP Routing
  • IP v4 support
  • IP Fragmentation support
  • Routing protocols supported:   
    •   Static routing   
    •   RIP-1, RIP-2   
    •   OSPF v.2
  • IEEE 802.1Q Tagged VLAN
  • Port-based VLAN (non-overlapping)
  • Maximum number of VLANs: 4K  

Priority Queues (CoS)
  • Standard: IEEE 802.1p
  • Number of queues: 8 per port

Traffic Classification (CoS)

Can be based on user-definable application types:
  • TOS
  • Diffserv (DSCP)
  • Port-based
  • MAC address
  • IP address
  • TCP/UDP port number

Network Access Security
  • 802.1x user authentication: port-based and MAC-based
  • RADIUS client for 802.1x support
  • SSH2 *
  • SSL *
  • Cisco-like port security
  • Multi-layer Access Control List (ACL) based on:   
    • MAC   
    • VLAN
    • 802.1p
    • Diffserv (DSCP)
    • IP address   
    • Protocol type
    • TCP/UDP destination port number
* Functions available in next firmware upgrade

Spanning Tree
  • 802.1D compatible
  • 802.1w Rapid Spanning Tree

  • IGMP v2
  • IGMP Snooping
  • PIM-DM

Port Trunk
  • Number of ports per trunk: 8 (max.)
  • Number of trunk per switch: 6 (max.) (in DGS-3312SR standalone mode only)
  • Trunking mode: static
  • Operation mode: load sharing
  • 802.3ad LACP support


Transmission Method
  • Store-and-forward

MAC Address Table
  • 16K entries per device

Routing Table
  • 2K entries per device

MAC Address Learning
  • Dynamic entries: automatic update
  • Static entries: user-defined

Layer 2 Packet Filtering/Forwarding Rates (half duplex)
  • 1,488,100 pps per port (max.)

RAM Buffer
  • 1MB per device

Jumbo Frame Size
  • Up to 9,216bytes

Broadcast Storm Control
  • Rate control of Broadcast, unknown Multicast and Unicast packets

Configuration & Management

Management Support
  • SNMP v.1, v.3
  • Web-based management
  • CLI (command line interface)
  • RMON monitoring
  • Telnet server
  • Telnet remote control console
  • Web GUI traffic monitoring
  • Password enable
  • Web MAC address browsing
  • SNMP trap on MAC notification
  • SNTP
  • IP filtering on management interface

  • MIB-II (RFC 1213)
  • Bridge MIB (RFC 1493)
  • RMON MIB (RFC 1757)
  • RIP (RFC 1724)
  • OSPF (RFC 1850)
  • CIDR (RFC 2096)
  • 802.1Q VLAN/802.1p MIB (RFC 2674)
  • IGMP MIB (RFC 2933)
  • IF (Interface) MIB (RFC 2233)
  • Ethernet-like MIB (RFC 1643)
  • D-Link enterprise MIB 

RMON Groups
  • 1, 2, 3, 9 (Alarm, Statistics, History, Event)

IP Number Self-identification
  • Through DHCP client, Bootp client

Firmware Upgrade
  • TFTP client

Console Port
  • DB-9 RS-232 DCE

Physical & Environmental

Power Input 
  • 100 to 120 VAC, 50/60 Hz or 200 to 240 VAC, 50/60 Hz
  • Internal universal power supply

Redundant Power Backup Support
  • Connector to connect to external redundant power supply

Power Consumption
  • 30 watts (max.) (without expansion modules)

  • 60 x 60 mm DC fans x 1

Operating Temperature
  • 0 ° to 40 °C

Storage Temperature
  • -25° to 55 °C

  • 10% to 95% non-condensing

  • 440 (W) x 309 (D) x 44 mm (H) (device only)
  • 19-inch rack-mount width, 1 U height

  • 4.4 kg (device only, without expansion modules)

Emission (EMI)
  • FCC Class A
  • CE Class A
  • C-Tick

  • CSA International

Ordering Information 

Modular L3 Gigabit Switch

  • 4 10/100/1000BASE-T ports,
  • 4 combo SFP (mini GBIC), 2 expansion slots, redundant power support

Optional Expansion Module

  • 4 SFP GBIC slots

  • 4 10/100/1000BASE-T ports

Optional SFP Transceiver

  • SFP transceiver for 1000BASE-LX, single-mode fiber, max. distance 10km, 3.3V

  • SFP transceiver for 1000BASE-SX, multi-mode fiber, max. distance 550m, 3.3V

  • SFP transceiver for 1000BASE-LHX, single-mode fiber, max. distance 40km, 3.3V

  • SFP transceiver for 1000BASE-ZX, single-mode fiber, max. distance 80km, 3.3V

Optional Redundant Power Supply

  • 60 watts redundant power supply

  • 2-slot redundant power supply chassis

  • 8-slot redundant power supply chassis 
This product was phased out on: 31/08/2011
This product's last date of support is on: 29/08/2016
Version Date Type File Size
Datasheet (English) - PDF 0.29mb Download
Version Description Date Type File Size
CLI Manual CLI Manual 01.10.2005 PDF 1.48mb Download
Manual Manual - PDF 12.48mb Download
Version Description Date Type File Size
1.00 Quick Installation Guide 01.09.2001 PDF 0.18mb Download
Version Description Date Type
Firmware v3.60-S21 3.60 Firmware v3.60-S21 30.11.2009 - Download
Firmware v3.51 build 03 3.51B03 Firmware v3.51 build 03 06.05.2009 - Download
Firmware v3.50 build 10 3.50B10 Firmware v3.50 build 10 01.01.2006 - Download
Version Description Date
DEU_AD_A1_CE_Doc CE Declaration 12.05.2009 Download
DEU_AD_Switch_RevA Switch Guide - Download