Ethernet Switch
"Best in Test"
Network Magazine
MAY 2004
The Ultimate Stackable Alternative to Meet Your Chassis Requirements
D-Link's next-generation switches xStacks are high port-density Layer 3 stackable switches that combine the ultimate
performance with fault tolerance, security, management functions with flexibility and ease-of-use. All these features typically
found in the more expensive chassis-based solutions, at the price of a stackable!

Fault Tolerant Star Stacking
10G Uplinks 10 Times the Speed of Gigabit*
Each D-Link xStack switch is equipped with 2 stacking ports
D-Link xStack provides the 10G uplinks for transmission at 10
providing 20Gbps full duplex bandwidth. Up to 6 xStack
times the speed of a Gigabit port. The 10G uplinks are available
switches can be stacked with a Stacking Master, itself equipped
as optional modules each equipped with 2 XFP compliant slots,
with 6 stacking ports providing 120Gbps aggregated stacking
into which you can install 2 IEEE 802.3ae-compliant XFP
bandwidth. Star stacking provides fault tolerance, and switch
transceivers for data transmission at 20,000Mbps in the full
units can be added or removed without interrupting the service
duplex mode.
of the entire stack. The switches are stacked together through
high-speed stack cables, allowing the entire stack to operate as
Complete Solution for Mid-Sized Businesses &
a single high-performance entity.
Whether you need to bring Gigabit or just conventional
Ring Stacking Topology
10/100Mbps speed to your organization's desktops, D-Link
Shared 40Gbps stacking bandwidth in the ring topology is also
xStack has the right solution with right port types, port densities
provided for installation sites with fewer switches to stack, so
and uplinks to match your requirements. With scalability and
you don't have to add a Stacking Master. In a ring stacking
flexibility built in, individual 10/100Mbps Ethernet and
scheme, xStack supports up to 12 units per stack. No matter if
10/100/1000Mbps Gigabit units may be joined in any
the Star or Ring topology is employed, you can easily see the
combination to evolve with your network needs.
ID number of the stacked units from the 7-segment display on
the front panel of each switch.
Wire-speed Packet Routing
D-Link xStack provides wire-speed non-blocking switch fabrics
High Gigabit Port-Density
with very fast hardware-based packet filtering/forwarding and
D-Link's xStack provides up to 48 Gigabit ports per switch in a
instant support for Windows, Unix and Internet environments.
low-profile 1-U rack-mount case. This gives you up to 312
Packet routing supports RIP v.1, v.2, OSPF and DVMRP
Gigabit ports per stack in the star architecture, or maximum
protocols, performed by on-board ASICs at speeds many times
336 Gigabit ports per stack in the ring topology. This high
faster than CPU-based routers.
Gigabit port density allows your xStack to be deployed either
as a core switch or as an easily expandable stack for Gigabit-
to-the-desktop applications.
xStack - Ring (Bus) Architecture
xStack - Star Architecture

Ethernet Switch
Plug-and-Play Configuration
Enhanced Network Performance & Availability
The xStack simplifies and speeds up your management tasks, as
D-Link's xStack provides extensive VLAN support including
multiple switches can be configured, monitored and maintained from
GARP/GVRP and 802.1Q to enhance network security and
any workstation running a web browser through one single IP
performance. Bandwidth control allows you to set traffic limit for
address. The stack is managed as a single object, and all stacked
each port to control the traffic volume from the edge of the network.
units are identified by a single IP address. A simple yet powerful
The xStack supports redundant power option to maximize network
web-based interface allows you to perform most comprehensive
uptime. Other features include 802.3ad Link Aggregation, 802.1d
management and configuration tasks, eliminating the need for you to
Spanning Tree and 802.1w Rapid Spanning Tree to increase network
install expensive, complex SNMP network management software.
reliability and availability of your stack.
Easy Expansion Beyond Your xStack
Multi-layer Quality of Service (QoS)
With D-Link SIM (Single IP Management) support*, you can easily
The xStack implements a robust set of multi-layer (L2, L3, L4)
add up to 32 switch units per stack outside of your xStack that are
QoS/CoS features to ensure that critical network services like VoIP,
not limited to any specific models. Through the built-in web
ERP, Intranet and video conference are served with proper priority.
manager, you can have a Tree View with clear information about the
Up to 8 priority queues for 802.1p/TOS/DiffServ are supported, with
members of the stacks, and your Network Topology that shows the
classification and marking based on MAC SA/DA, IP SA/DA, and/or
locations of the stacked units and their link information. Your
TCP/UDP port numbers.
xStack's support for any switch models with embedded Single IP
Management means that you can expand your stack to include also
Virtual Router Redundancy Protocol (VRRP) Support
L2 access-level or any other switches to accommodate your network
D-Link xStack supports the Virtual Router Redundancy Protocol
(VRRP), allowing several L3 switches on a multi-access link to
utilize the same virtual IP address. One switch will be elected as a
Comprehensive Security
master with the other switches acting as backups in case of the failure
D-Link's xStack provides a complete set of security features for
of the master router. This VRRP support provides convenience,
connectivity and access control. This set includes Access Control
permitting your host system to be configured manually or via DHCP
Lists (ACLs) based on MAC address, switch port, IP address, and/or
with a single default gateway.
TCP/UDP port numbers, 802.1x user authentication and MAC
address control. The xStack also provides central management for
Extensive Network Management Functions
administration access via TACACS/TACACS+ and RADIUS.
The xStack supports a variety of network management options
Together with network application control, this security ensures that
including: console CLI, Telnet configuration, web-based and SNMP
not only proper user access is served, but malicious traffic is also
v.1, v.2c, v.3 management, RMON monitoring, TFTP firmware
prevented from being spread across the network.
upgrade, Port Mirroring for troubleshooting, Bootp and DHCP IP
assignment. The xStack also supports a variety of advanced traffic
management options including: 802.1x, Bandwidth Control,
Broadcast Storm Prevention, and support for IGMP v.1, v.2 snooping.
Key Features
High port density per switch, with comprehensive 10/100Mbps,
Advanced Access Control Lists (ACL), enhanced
copper Gigabit, SFP fiber Gigabit support
TACACS/TACACS+ and RADIUS authentication
Very high-speed 10G uplink option 10 times faster than Gigabit *
802.3ad Link Aggregation port trunks
Fault tolerant star stacking
Jumbo frame support
Up to 6 units per stack, maximum 312 Gigabit ports per stack
High availability with redundant power supply, Spanning Tree
(star stacking)
Up to 12 units per stack, maximum 336 Gigabit ports per stack
Single IP Management, SNMP v.1, v.2c, v.3 support, RMON
(ring stacking)
monitoring, Syslog, web-based management, Telnet, CLI through
High bandwidth 120Gbps star stacking, 40Gbps ring stacking
console port
Wire-speed packet routing supporting RIP v.1, v.2, OSPF,
DVMRP, PIM Dense mode

* D-Link SIM (Single IP Management) support for xStack available in firmware
Per-port bandwidth control & multi-layer (L2, L3, L4) QoS/CoS
upgrade in the near future. 10G supported on switch models DXS-3326GSR
and DXS-3350SR only.

The xStack Switches & Modules

24-Port L3 Gigabit Stacking Master
24-Port L3 Gigabit Switch
50-Port L3 Gigabit Switch

24 1000BASE-T Ports
24 1000BASE-T Ports
48 1000BASE-T Ports
8 Combo SFP
4 Combo SFP
4 Combo SFP
6 Stacking Ports
2 Stacking Ports
2 Stacking Ports
1 Open Slot for Optional
10G Uplink Module

52-Port L3 10/100Mbps Switch
26-Port L3 Gigabit Switch
Optional 10G Uplink Module

48 10/100BASE-TX Ports
24 SFP
10G Module With 2 XFP
4 Combo 1000BASE-T Ports
2 1000BASE-T Ports
2 Stacking Ports
1 Open Slot for Optional 10G
2 Stacking Ports
Uplink Module

Technical Specifications
Ethernet Switch
Device Ports
- Port-based VLAN
- 24 10/100/1000BASE-T Gigabit ports
- IEEE 802.1Q Tagged VLAN
- 8 Combo SFP
- 6 10Gigabit stacking ports
- Maximum number of VLANs
- 1 CompactFlash slot
Dynamic: 255
- 1 console port
Static: 4K
- 24 10/100/1000BASE-T Gigabit ports
Priority Queues (CoS)
- 4 Combo SFP
- Standard: IEEE 802.1p
- 2 10Gigabit stacking ports
- Maximum number of queues: 8
- 1 console port
Traffic Classification (CoS)
- 48 10/100BASE-TX Ethernet ports
Can be based on user-definable application types:
- 2 10/100/1000BASE-T Gigabit ports
- 2 SFP
- Diffserv (DSCP)
- 2 10Gigabit stacking ports
- Port-based
- 1 console port
- MAC address
- IP address
- 24 SFP
- TCP/UDP port number
- 4 Combo 10/100/1000BASE-T Gigabit ports
- 2 10Gigabit stacking ports
Access Security
- 1 open slot
- 802.1x port-based access control
- 1 console port
- 802.1x MAC-based access control
- Port security
- 48 10/100/1000BASE-T Gigabit ports
- SSH *
- 4 Combo SFP
- SSL *
- 2 10Gigabit stacking ports
- 1 open slot
* Functions available in future firmware upgrade.
- 1 console port
Access Control List
Multi-layer ACL based on:

Port Standard/Function Support
- MAC address
- IEEE 802.3 10BASE-T/802.3u 100BASE-TX/802.3ab 1000BASE-T
- ANSI/IEEE 802.3 NWay auto-negotiation
- Diffserv (DSCP)
- IEEE 802.3x Flow Control
- IP address
- Packet protocol type
- Port mirroring
- TCP/UDP port number (user-definable application types)
- TCP/UDP payload (user-definable packet content)
SFP Support
- Per port ACL definition
- IEEE 802.3z 1000BASE-LX (DEM-310GT transceiver)
- IEEE 802.3z 1000BASE-SX (DEM-311GT transceiver)
Spanning Tree Protocol
- IEEE 802.3z 1000BASE-LH (DEM-314GT transceiver)
- 802.1D Spanning Tree compatible
- IEEE 802.3z 1000BASE-ZX (DEM-315GT transceiver)
- 802.1w Rapid Spanning Tree
- 802.1s Multiple Spanning Tree *
XFP Support
IEEE 802.3ae compliant transceiver
* Function available in future firmware upgrade.
Switch Fabric
IP Multicast
- DGS-3324SRi: 168Gbps
- IGMP v.2
- DGS-3324SR: 88Gbps
- DES-3352SR: 57.6Gbps
- PIM Dense mode
- DXS-3326GRS: 128Gbps
- VRRP *
- DXS-3350SR: 176Gbps
* Function supported in future firmware upgrade.
Packet Forwarding Rate
- DGS-3324SRi: 125Mpps
Port Trunk
- DGS-3324SR: 65.5Mpps
- Maximum number of ports per trunk: 8
- DES-3352SR: 43Mpps
- Maximum number of trunks per stack: 32
- DXS-3326GRS: 95Mpps
- Operation mode support: load sharing
- DXS-3350SR: 131Mpps
- 802.3ad compatible Link Aggregation (LACP)
Packet Buffer Memory
Transmission Method
- DGS-3324SRi: 2MB
- DGS-3324SR: 2MB
- DXS-3326GRS: 2MB
Jumbo Frame
- DXS-3350SR: 4MB
9,216 bytes (max.)
Maximum IP Address Table Entries
Configuration & Management
All models: 4K
Management Support
- D-Link SIM (Single IP Management) *
Maximum MAC Address Table Entries
- SNMP v.1, v.2c, v.3
All models: 16K
- Web-based management
- Web GUI traffic monitoring
- Web-based MAC address browsing
IP Routing
- CLI (command line interface)
- IP v.4 support
- RMON monitoring
- IP Fragmentation support
- Telnet server (up to 8 sessions)
- Multiple IP interfaces per VLAN*
- TACACS/TACACS+ authentication on switch admin access
- Routing protocols supported:
- RADIUS authentication on switch admin access
Static routing
RIP v.1, RIP v.2
- DHCP/Bootp relay
OSPF v.2 *
- DNS relay

- Dual Images
* Function available in future firmware upgrade

Technical Specifications
Ethernet Switch
- Back-Door function
- Port description
- CPU utilization monitoring
* Function available in future firmware upgrade.
- MIB-II (RFC 1213)
- Bridge MIB (RFC 1493)
- RMON MIB (RFC 1757)
- 802.1p Priority Queues (RFC 2674)
- 802.1Q VLAN MIB (RFC 2674)
- IGMP MIB (RFC 2833)
- If MIB (RFC 2233)
- Ethernet-like MIB (RFC 1643)
- RIP MIB (RFC 1724)
- OSPF MIB (RFC 1850)
- CIDR MIB (RFC 2096)
- 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
Physical & Environmental
(W x D x H) (device only)
- DGS-3324SRi, DGS-3324SR: 441 x 207 x 44 mm
- DES-3352SR: 441 x 210 x 44 mm
- DXS-3326GSR, DXS-3350SR: 441 x 430 x 44 mm
19-inch rack-mount width, 1U height
(without optional module, device only)
- DGS-3324SRi, DGS-3324SR: 3.15 kg
- DES-3352SR: 4.75 kg
- DXS-3326GSR: 6.5 kg
Optional SFP Transceivers
- DXS-3350SR: 6.41 kg
SFP transceiver for 1000BASE-LX,
single-mode fiber, max. distance 10km, 3.3V
Power Supply
SFP transceiver for 1000BASE-SX,
- 100 to 120VAC, 200 to 240VAC, 50/60Hz
multi-mode fiber, max. distance 550m, 3.3V
- Internal universal power supply
SFP transceiver for 1000BASE-LHX,
- Optional external redundant power supply support
single-mode fiber, max. distance 50km, 3.3V
SFP transceiver for 1000BASE-ZX,
Power Consumption
single-mode fiber, max. distance 80km, 3.3V
- DGS-3324SRi, DGS-3324SR: 90 watts (max.)
- DES-3352SR: 80 watts (max.)
Optional Redundant Power Supply
- DXS-3326GSR: 140 watts (max.)
140-watts redundant power supply
- DXS-3350SR: 143 watts (max.)
2-slot redundant power supply chassis
8-slot redundant power supply chassis
- DGS-3324SRi, DGS-3324SR, DXS-3326GSR: 2 40 x 40 mm DC fans,
1 60 x 60 mm DC fan
- DES-3352SR, DXS-3350SR: 2 40 x 40 mm DC fans
Operating Temperature
0 to 40 C
Specifications subject to change without
TEL: 1-714-885-6000
FAX: 1-866-743-4905
prior notice.
D-Link is a registered trademarks and
TEL: 1-905-8295033
FAX: 1-905-8295223
xStack is a trademark of D-Link
Storage Temperature
TEL: 44-20-8731-5555
FAX: 44-20-8731-5511
Corporation/D-Link System Inc. All other
trademarks belong to their proprietors.
TEL: 49-6196-77990
FAX: 49-6196-7799300
-25 to 55 C
TEL: 33-1-30238688
FAX: 33-1-30238689
TEL: 31-10-282-1445
FAX: 31-10-282-1331
TEL: 32(0)2-517-7111
FAX: 32(0)2-517-6500
5% to 95% non-condensing
TEL: 39-2-2900-0676
FAX: 39-2-2900-1723
TEL: 34-93-4090770
FAX: 34-93-4910795
TEL: 46-(0)8564-61900
FAX: 46- 0)8564-61901
Emission (EMI)
TEL: 47-22-309075
FAX: 47-22-309085
- FCC Class A
TEL: 45-43-969040
FAX: 45-43-424347
- CE Class A
TEL: 358-9-2707-5080
FAX: 358-9-2707-5081
TEL: 65-6774-6233
FAX: 65-6774-6322
TEL: 61-2-8899-1800
FAX: 61-2-8899-1868
TEL: 81-3-5434-9678
FAX: 81-3-5434-9868
CSA International
TEL: 86-10-8518-2533
FAX: 86-10-8518-2250
TEL: 91-022-652-6696
FAX: 91-022-652-8914
Middle East (Dubai) TEL: 9714-8834234
FAX: 9714-8834394
TEL: 90-212-335-2553
FAX: 90-212-335-2500
TEL: 202-414-4295
FAX: 202-415-6704
TEL: 972-9-9715700
FAX: 972-9-9715601
TEL: 56-2-232-3185
FAX: 56-2-232-0923
TEL: 55-11-55039320
FAX: 55-11-55039321
South Africa
TEL: 27(0)1266-52165
FAX: 27 0)1266-52186
TEL: 7-095-744-0099
FAX: 7-095-744-0099#350
TEL: 886-2-2910-2626
FAX: 886-2-2910-1515
Rev. 01 (May. 2004)
D-Link Corp.
TEL: 886-2-2916-1600
FAX: 886-2-2914-6299

Document Outline