מתג מנוהל 24 פורטים +Layer2 במהירות 10/100/1000 + בנוסף 4 פורטים Combo 1000Base-T/Mini GBIC SFP ו-3 סלוטים להרחבות
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The xStack® DGS-3427 by D-Link is a high-performance, managed, stackable Layer 2+ switch that provides ideal network solutions for workgroups and edge deployments. D-Link® Single IP Management (SIM) allows network administrators to cluster a virtual stack of up to 32 DGS-3427 dispersed switches through a single IP address. The clustering environment spans buildings, making it perfect for businesses that require multiple building deployment. The DGS-3427 also supports physical stacking of up to 12 units in a stack, so that the entire stack can act as a single logical unit with up to 40Gbps of stacking backplane. Furthermore, the xStack switch provides comprehensive security for edge access such as Access Control List, DHCP server screening and DoS attack prevention.

Non-Blocking Switching
The xStack DGS-3427 provides non-blocking switching solutions for gigabit connection and supports 24 gigabit ports with optional 3 10Gigabit uplinks. The switch also supports four combo SFP ports, which means that when these ports are enabled, four of the copper gigabit ports will be disabled. When stacked, the xStack DGS-3427 has a stacking backplane of 40Gbps.

Advanced Network Security
For edge network security, the DGS-3427 supports features such as IP-MAC-Port Binding to prevent security breaches such as rogue DHCP server, man-in-the-middle attacks or IP spoofing. For clients with XP SP3, Vista, or servers with Microsoft’s Server 2008, the xStack DGS-3427 works in conjunction with Microsoft’s Network Access Protection (NAP) as part of an ecosystem that enforces compliance with network health policies. The xStack switch grants network hosts access only when compliant with IT security policies, such as up-to-date anti-virus signatures and operating system patches. This prevents a virus-infested client or server from gaining access and furthering contamination.

The xStack switch also supports loopback detection, which detects a loop in the network even though the end device causing the loop is without spanning tree. When the switch detects a loop is in the connected node, the xStack DGS-3427 shuts down the port with the loop so that the entire system will continue to function normally. This feature can also be VLAN based.

The DGS-3427 incorporates advanced mechanisms to detect an attack against a switch’s central processing unit and to take corrective action on an attacking interface. When a Denial of Service attack is waged against the xStack switch, the D-Link Safeguard Engine™ detects the threat and prevents overload of the central processor, insuring network integrity and helping to maintain open network bandwidth channels.

In addition, this D-Link switch supports 802.1x authentication, which allows users to securely log on to your network. When used in conjunction with a RADIUS server, 802.1x requires each user workstation attached to the xStack switch to provide a username and password before gaining access to the network. Other security features include Access Control List, allowing an administrator to restrict network access through a variety of means including MAC address, IP, UDP/TCP, and even VLAN ID.

IP Clustering Stackable
The xStack DGS-3427 provides Single IP Management Technology (SIM), which allows a set of switches to be managed a single IP, regardless of geographical locations. Your stack can be comprised of units that are located anywhere on the network, minimizing the impact of any single point of failure. Furthermore, multiple xStack switches can be configured, monitored and maintained from any workstation running a web browser through one unique IP address. The stack is managed as a single object, with all units identified by a single IP address. Using Tree View, you can obtain an overview of the members of the stack and a network topology showing the locations of the units and their link information. This simple yet powerful web-based management eliminates the need for you to install expensive SNMP network management software. You can add units to up to 32 switches per stack not limited to any specific D-Link SIM models.

Voice and Video Applications
For today’s business, having voice, data and video on the same network is common practice. This challenge is met by the DGS-3427, which supports 802.1p with 8 queues. The administrator can designate the priority of the traffic based on a variety of means including IP or MAC address, so that voice data is always clear and jitter free. Video traffic can also be assigned with the same priority. In addition, the xStack switch provides IGMP Snooping or MLD snooping, which allows the forwarding of multicast packets such as streaming audio and video, without increasing network broadcast congestion. By snooping IGMP registration information within a frame, a list of workstations who have joined the multicast group is created. This list allows a switch to intelligently forward packets to only the appropriate member workstations. In conjunction with the 802.1Q VLANs the switch supports, Quality of Service and security can be achieved on a network infused with data traffic.

For other multimedia-on-demand applications, such as IPTV deployments, the xStack DGS-3427 provides advanced features for easy video streaming management. For example, the xStack switch supports per port multicast stream control, which allows a service provider to assign limited multicast addresses per port. This means it can act as a security control that pre-configures channels for each subscriber on a port level to prevent unauthorized multicast join. The xStack DGS-3427 also supports IGMP multicast VLAN, which eliminates duplicate multicast traffic being sent to clients in different VLANs and thus removing bottlenecks in the uplink port.

Ease of Management
The xStack DGS-3427 supports SNMP v1/2/3 so traps can be set on abnormal events and information can be polled to maximize the productivity of the network. Other standard management features also include RMON and IEEE 802.1d/w/s Spanning Tree. The user interface options include an intuitive web-based browser graphic interface or industry-standard CLI, either administration traffic can be protected through SSL or SSH encryptions.

מאפיינים כללים




24 10/100/1000BASE-TX Auto-Negotiating, Auto-MDI/MDIXPorts with 802.3x Flow Control

Combo Ports

4 Combo SFP Slots, Media Support Dependent On GBIC Transceiver

Open Slot for 10-Gigabit Uplink Modules

3 Open Slots for 10Gigabit Uplink Modules

Diagnostic LEDs

Per Device: Power, Console, RPS

Per Gigabit Port: Link/Activity, 10/100Mbps or 1000Mbps Speed

Per Ethernet Port: Link/Activity, 10Mbps or 100Mbps Speed

RS-232 Console Port


Option 10-Gigabit Uplink (Transceivers sold separately)

Single XFP Slot Module (DEM-410X)


Single CX4 Port Module (DEM-410CX)


10GBASE-SR (300 m Multi-Mode Fiber) Support


10GBASE-LR (10 km Single-Mode Fiber) Support


Maximum Number of 10-Gigabit Uplinks Installable



Switch Fabric


Packet Forwarding Rate


Packet Buffer


MAC Address Table

8K Entries

IP v4 Routing Table

128 Entries

IP v6 Routing Table

128 Entries

IP v4 Host Table

2K Entries

IP v6 Host Table

1K Entries

Jumbo Frame Size

9,216 Bytes


Internal Power Supply

100 to 120VAC, 200 to 240VAC, 50/60Hz

Maximum Power Consumption

71.6 Watts

Optional Redundant Power Supply




2 40x40 mm DC Fans

Heat Dissipation

244.65 BTU/Hr.


93,885 hours


< 52.3dB


Operating: 32° to 104°F (0° to 40°C)

Storage: -40° to 158°F (-40° to 70°C)


Operating: 10% ~ 90% Non-condensing

Storage: 5% ~ 90% Non-condensing


17.3 x 15.3 x 1.7 inches (441 x 389 x 44 mm)
19-inch Standard Equipment Rack Mount Width, 1U Height


12.1 lbs (5.51 kg)


FCC Class A, CE, C-Tick, VCCI

Safety Compliance

CSA International, CB

Software Functions

L2 Features

IGMP Snooping Supports

IGMP Snooping v1, v2, v3

1K IGMP Snooping Groups

IGMP Fast Leave

Host-based IGMP Fast Leave *

Spanning Tree

802.1D STP

802.1w RSTP

802.1s MSTP

MLD Snooping Supporting 511 MLD Snooping Groups

Loop Back Detection

32 802.3ad Link Aggregation Groups

Back Pressure Flow Control

Trunking Across Stack

Head-of-line Blocking Prevention

Port Mirroring



ACL modes *



Double VLAN

Maximum 4K Static VLAN Groups


Guest VLAN


MAC-based VLAN

L3 Features

128 IP v.4/v.6 Static Routing

QoS (Quality of Service)

Per Flow Bandwidth Control

802.1p Support

8 Queues per Port

Queue Handling


Weighted Round Robin (WRR)

CoS Based on:

Switch Port

MAC Address

802.1p Priority


Protocol Type



IP v.4/v.6 Address

IP v.6 Traffic Class

IP v.6 Flow Label


User Defined Packet Content *

ACL (Access Control List)

Up to 768 Access Rules:

Switch Port

MAC Address

802.1p Priority


Protocol Type



IP Address

IP v.4/v.6 Address

IP v.6 Traffic Class

IP v.6 Flow Label


User Defined Packet Content *

Time-based ACL

CPU Interface Filtering

ACL Statistic *



SSH v.2

SSL v.3

Port Security

802.1x Port-based/MAC-based Access Control

Web-based Access Control *

MAC-based Access Control *

Broadcast Storm Control

Traffic Segmentation

IP-MAC-Port Binding (500 entries per device)

D-Link Safeguard Engine™

Support Microsoft NAP


D-Link Single IP Management v.1.6

Web-based GUI


Web GUI Traffic Monitoring

Web MAC Address Browsing

Telnet server

Telnet client *

TFTP client

SNMP v.1, v.2c, v.3

SNMP trap on MAC Notification

RMON v.1

BootP/DHCP client

DHCP auto-configuration

DHCP relay option 82

System log

Trap/alarm/log severity control

vFlash file system

Dual Images

Dual Configuration

CPU Monitoring



MIB-II (RFC 1213)

Bridge MIB (RFC 1493)

SNMP v.2 MIB (RFC 1907)

RMON MIB (RFC 1757, 2819)

RMON v.2 MIB (RFC 2021)

Ethernet-like MIB (RFC 1643, 2358, 2665)

802.1p MIB (RFC 2674)

IF MIB (RFC 2233, 2863)

RADIUS Authentication Client MIB (RFC 2618)

RADIUS Accounting Client MIB (RFC 2620)

Ping/Traceroute MIB (RFC 2925) *

D-Link enterprise MIB

Warranty Information


lifetime warranty

Ordering Information

Part Number



xStack Layer 2+ 24-Port Gigabit PoE Switch with 4 Combo SFP Ports and 2 10Gigabit Slots


xStack Layer 2+ 24-Port Gigabit Switch with 4 Combo SFP Ports and 3 10Gigabit Slots


xStack Layer 2+ 48-Port Gigabit Switch with 4 Combo SFP Ports and 2 10Gigabit Slots


SFP Transceiver for 1000BASE-LX, Single Mode Fiber, Maximum Distance 10Km


SFP Transceiver for 1000BASE-SX, Muti Mode Fiber, Maximum Distance 550m


1-Port CX-4 10Gigabit Module with 1 Meter CX-4 Cable


1-Port XFP 10Gigabit Module


XFP Transceiver for 10GBASE-SR, Multimode Fiber, Maximum Distance 300m


XFP Transceiver for 10GBASE-LR, Singlemode Fiber, up to 10Km


Redundant Power Supply (for DGS-3427/DGS-3450)


Redundant Power Supply (for DGS-3426P)


2-Slot Redundant Power Supply Chassis (for DPS-500)


8-Slot Redundant Power Supply Chassis (for DPS-500)


D-View 6.0 SNMP Network Management Software, Standard Version


D-View 6.0 SNMP Network Management Software, Professional Version

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