D-Link xStack DXS-3350SR Instruction Manual

D-Link ™ DXS-3350SR
Managed 10/100/1000Mbps 48-port and 4 SFP Combo Ports
with optional 2-Port 10-Gigabit Layer 3 Stackable Ethernet Switch
Installation Guide and User Manual

DXS-3350SR Gigabit Layer 3 Switch
__________________________________________________________________________________
Information in this document is subject to change without notice.
© 2004 D-Link Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of D-Link Computer Corporation is strictly forbidden.
Trademarks used in this text: D-Link and the D-LINK logo are trademarks of D-Link Computer Corporation; Microsoft and Windows are registered
trademarks of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products. D-Link
Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own.
June 2004 P/N 651XS3350015
ii

Table of Contents
Preface ...................................................................................................................................................................................... 1
Intended Readers....................................................................................................................................................................... 2
Typographical Conventions ................................................................................................................................................. 2
Notes, Notices, and Cautions .................................................................................................................................................... 2
Safety Instructions..................................................................................................................................................................... 3
Safety Cautions .................................................................................................................................................................... 3
General Precautions for Rack-Mountable Products ............................................................................................................. 4
Protecting Against Electrostatic Discharge .......................................................................................................................... 5
Introduction............................................................................................................................................................................... 6
Gigabit Ethernet Technology............................................................................................................................................................... 7
Switch Description ............................................................................................................................................................... 7
Features ................................................................................................................................................................................ 8
Ports ..................................................................................................................................................................................... 9
Installing the SFP ports........................................................................................................................................................................ 9
Front-Panel Components.................................................................................................................................................... 10
LED Indicators ................................................................................................................................................................... 10
Rear Panel Description....................................................................................................................................................... 11
Side Panel Description ....................................................................................................................................................... 11
Installation............................................................................................................................................................................... 12
Package Contents ............................................................................................................................................................... 13
Before You Connect to the Network .................................................................................................................................. 13
Installing the Switch Without the Rack.............................................................................................................................. 14
Installing the Switch in a Rack........................................................................................................................................... 14
Mounting the Switch in a Standard 19" Rack .................................................................................................................................... 15
Power On........................................................................................................................................................................................... 15
Power Failure..................................................................................................................................................................................... 15
The Optional Module ......................................................................................................................................................... 15
External Redundant Power System .................................................................................................................................... 17
Connecting The Switch........................................................................................................................................................... 19
Switch To End Node .......................................................................................................................................................... 20
Switch to Hub or Switch .................................................................................................................................................... 21
Connecting To Network Backbone or Server..................................................................................................................... 22
Stacking and the DXS-3350SR .......................................................................................................................................... 23
Stacking Limitations Utilizing a Ring or Star Toplogy ..................................................................................................................... 26
Stacking In a Star Topology .............................................................................................................................................................. 28
Introduction To Switch Management...................................................................................................................................... 29
Management Options .............................................................................................................................................................. 30

Web-based Management Interface ..................................................................................................................................... 30
SNMP-Based Management ................................................................................................................................................ 30
Command Line Console Interface Through the Serial Port ............................................................................................... 30
Connecting the Console Port (RS-232 DCE)..................................................................................................................................... 30
First Time Connecting to the Switch.................................................................................................................................. 32
Password Protection ........................................................................................................................................................... 33
SNMP Settings ................................................................................................................................................................... 34
Traps.................................................................................................................................................................................................. 34
MIBs.................................................................................................................................................................................................. 34
IP Address Assignment ...................................................................................................................................................... 35
Connecting Devices to the Switch...................................................................................................................................... 36
Web-based Switch Configuration ........................................................................................................................................... 37
Introduction............................................................................................................................................................................. 38
Login to Web Manager....................................................................................................................................................... 38
Web-based User Interface .................................................................................................................................................. 39
Areas of the User Interface ................................................................................................................................................................ 39
Web Pages.......................................................................................................................................................................... 40
Configuring The Switch.......................................................................................................................................................... 41
Switch Information ................................................................................................................................................................. 42
IP Address............................................................................................................................................................................... 43
Setting the Switch's IP Address using the Console Interface............................................................................................................. 45
Advanced Settings................................................................................................................................................................... 45
Box InformationConfiguration........................................................................................................................................... 47
Port Configurations................................................................................................................................................................. 48
Port Description.................................................................................................................................................................. 50
Port Mirroring ......................................................................................................................................................................... 51
Link Aggregation .................................................................................................................................................................... 52
LACP Port Setting .................................................................................................................................................................. 55
MAC Notification ................................................................................................................................................................... 56
MAC Notification Global Settings .................................................................................................................................................... 56
MAC Notification Port Settings......................................................................................................................................................... 57
IGMP ...................................................................................................................................................................................... 58
IGMP Snooping................................................................................................................................................................................. 58
Static Router Ports ............................................................................................................................................................................. 59
Spanning Tree ......................................................................................................................................................................... 61
802.1s MSTP ..................................................................................................................................................................................... 61
802.1w Rapid Spanning Tree............................................................................................................................................................. 61
Port Transition States......................................................................................................................................................................... 62
Edge Port ........................................................................................................................................................................................... 62
P2P Port............................................................................................................................................................................................. 62

802.1d / 802.1w / 802.1s Compatibility............................................................................................................................................. 62
STP Bridge Global Settings ............................................................................................................................................... 63
MST Configuration ............................................................................................................................................................ 65
MSTI Port Settings............................................................................................................................................................. 68
STP Instance Settings......................................................................................................................................................... 69
STP Port Information ......................................................................................................................................................... 70
Forwarding Filtering ............................................................................................................................................................... 72
Unicast Forwarding ............................................................................................................................................................ 72
Static Multicast Forwarding ............................................................................................................................................... 73
VLANs.................................................................................................................................................................................... 74
Understanding IEEE 802.1p Priority.................................................................................................................................. 74
VLAN Description ............................................................................................................................................................. 74
Notes About VLANs on the DXS-3350SR........................................................................................................................................ 74
IEEE 802.1Q VLANs......................................................................................................................................................... 75
802.1Q VLAN Tags........................................................................................................................................................................... 76
Port VLAN ID ................................................................................................................................................................................... 77
Tagging and Untagging ..................................................................................................................................................................... 78
Ingress Filtering................................................................................................................................................................................. 78
Default VLANs.................................................................................................................................................................................. 78
Port-based VLANs ............................................................................................................................................................................ 79
VLAN Segmentation ......................................................................................................................................................................... 79
VLAN and Trunk Groups.................................................................................................................................................................. 79
Static VLAN Entry............................................................................................................................................................. 80
GVRP Setting..................................................................................................................................................................... 82
Traffic Control.................................................................................................................................................................... 84
Port Security....................................................................................................................................................................... 85
Port Lock Entries ............................................................................................................................................................................... 86
QoS ......................................................................................................................................................................................... 88
Port Bandwidth Settings..................................................................................................................................................... 90
QoS Scheduling Mechanism.............................................................................................................................................................. 91
QoS Output Scheduling ..................................................................................................................................................................... 92
Configuring The Combination Queue................................................................................................................................................ 93
802.1p Default Priority....................................................................................................................................................... 94
802.1p User Priority ........................................................................................................................................................... 95
Traffic Segmentation.......................................................................................................................................................... 96
System Log Server ............................................................................................................................................................. 97
SNTP Settings......................................................................................................................................................................... 99
Current Time Settings........................................................................................................................................................................ 99
Time Zone and DST ........................................................................................................................................................................ 101
Access Profile Configuration ................................................................................................................................................ 103

Port Access Entity................................................................................................................................................................. 117
Port-Based Network Access Control ............................................................................................................................................... 117
MAC-Based Network Access Control............................................................................................................................................. 118
Configure Authenticator .................................................................................................................................................................. 119
Local Users...................................................................................................................................................................................... 122
PAE System Control ........................................................................................................................................................ 123
Initialize Ports.................................................................................................................................................................................. 124
Reauthenticate Port(s)...................................................................................................................................................................... 126
RADIUS Server................................................................................................................................................................ 127
Configuring Layer 3 IP Networking ..................................................................................................................................... 128
L3 Global Advanced Settings .......................................................................................................................................................... 128
Setting Up IP Interfaces................................................................................................................................................................... 129
MD5 Key ......................................................................................................................................................................................... 131
Route Redistribution Settings .......................................................................................................................................................... 132
Route Preference Settings ................................................................................................................................................ 134
Static/Default Route......................................................................................................................................................................... 136
Static ARP Table ............................................................................................................................................................................. 137
RIP ........................................................................................................................................................................................ 138
RIP Version 1 Message Format ....................................................................................................................................................... 139
RIP Command Codes ...................................................................................................................................................................... 139
RIP 1 Message................................................................................................................................................................................. 139
RIP 1 Route Interpretation............................................................................................................................................................... 139
RIP Version 2 Extensions................................................................................................................................................................ 139
RIP2 Message Format...................................................................................................................................................................... 139
RIP Configuration ............................................................................................................................................................ 140
Setting Up RIP................................................................................................................................................................................. 140
OSPF..................................................................................................................................................................................... 142
Global OSPF Settings...................................................................................................................................................................... 158
OSPF Area Setting........................................................................................................................................................................... 159
OSPF Interface Configuration ......................................................................................................................................................... 160
OSPF Virtual Interface Settings....................................................................................................................................................... 162
Area Aggregation Configuration ..................................................................................................................................................... 163
OSPF Host Route Settings............................................................................................................................................................... 165
DHCP/BOOTP Relay ........................................................................................................................................................... 166
DNS Relay ............................................................................................................................................................................ 167
Configuring DNS Relay Information............................................................................................................................................... 168
DNS Relay Static Table................................................................................................................................................................... 168
VRRP Configuration ....................................................................................................................................................................... 169
VRRP Interface Settings.................................................................................................................................................................. 169
IP Multicasting ................................................................................................................................................................. 174
IGMP Interface Configuration......................................................................................................................................................... 174

DVMRP Interface Configuration..................................................................................................................................................... 176
PIM_DM Interface Configuration ................................................................................................................................................... 178
Management.......................................................................................................................................................................... 180
Security IP........................................................................................................................................................................ 181
User Accounts....................................................................................................................................................................... 181
Admin and User Privileges .............................................................................................................................................................. 182
Access Authentication Control ............................................................................................................................................. 183
Policy & Parameters......................................................................................................................................................... 184
Application's Authentication Settings .............................................................................................................................. 185
Authentication Server Group Settings.............................................................................................................................. 186
Authentication Server Hosts............................................................................................................................................. 187
Login Method Lists .......................................................................................................................................................... 189
Enable Method Lists......................................................................................................................................................... 190
Local Enable Password .................................................................................................................................................... 192
Enable Admin................................................................................................................................................................... 193
Secure Socket Layer (SSL) ................................................................................................................................................... 194
Download Certificate ....................................................................................................................................................... 195
Ciphersuite ....................................................................................................................................................................... 195
Secure Shell (SSH)................................................................................................................................................................ 197
SSH Configuration ........................................................................................................................................................... 197
SSH Algorithm................................................................................................................................................................. 199
SSH User Authentication ................................................................................................................................................. 201
SNMP Manager..................................................................................................................................................................... 202
Traps................................................................................................................................................................................................ 202
MIBs................................................................................................................................................................................................ 202
SNMP User Table ............................................................................................................................................................ 203
SNMP View Table ........................................................................................................................................................... 205
SNMP Group Table.......................................................................................................................................................... 207
SNMP Community Table Configuration.......................................................................................................................... 209
SNMP Host Table ............................................................................................................................................................ 210
SNMP Engine ID ............................................................................................................................................................. 211
Monitoring ............................................................................................................................................................................ 212
Port Utilization ................................................................................................................................................................. 213
CPU Utilization................................................................................................................................................................ 214
Packets.............................................................................................................................................................................. 215
Received (RX) ................................................................................................................................................................................. 215
UMB Cast (RX)............................................................................................................................................................................... 217
Transmitted (TX)............................................................................................................................................................................. 218
Errors................................................................................................................................................................................ 220
Received (RX) ................................................................................................................................................................................. 220

Transmitted (TX)............................................................................................................................................................................. 221
Size................................................................................................................................................................................... 223
Stacking Information........................................................................................................................................................ 225
Device Status ................................................................................................................................................................................... 227
View MAC Address Table ............................................................................................................................................... 228
Switch History.................................................................................................................................................................. 230
IGMP Snooping Group .................................................................................................................................................... 231
IGMP Snooping Forwarding ............................................................................................................................................ 232
VLAN Status.................................................................................................................................................................... 233
Browse Router Port.......................................................................................................................................................................... 233
Port Access Control.......................................................................................................................................................... 234
Authenticator State .......................................................................................................................................................................... 234
Layer 3 Feature Monitoring ............................................................................................................................................. 235
Browse IP Address .......................................................................................................................................................................... 235
Browse Routing Table ..................................................................................................................................................................... 236
Browse ARP Table .......................................................................................................................................................................... 236
Browse IP Multicast Forwarding Table ........................................................................................................................................... 237
Browse IGMP Group Table............................................................................................................................................................. 237
OSPF Monitoring ............................................................................................................................................................................ 237
DVMRP Monitoring........................................................................................................................................................................ 240
PIM Monitoring............................................................................................................................................................................... 241
Maintenance.......................................................................................................................................................................... 242
TFTP Services....................................................................................................................................................................... 243
Download Firmware ........................................................................................................................................................................ 243
Download Configuration File........................................................................................................................................... 244
Upload Configuration ...................................................................................................................................................................... 244
Upload Log...................................................................................................................................................................................... 244
Multiple Image Services................................................................................................................................................... 244
Firmware Information...................................................................................................................................................................... 245
Config Firmware Image................................................................................................................................................................... 246
Ping Test.......................................................................................................................................................................................... 246
Save Changes ................................................................................................................................................................... 247
Reset................................................................................................................................................................................. 248
Reboot Device.................................................................................................................................................................. 249
Logout ............................................................................................................................................................................................. 249
D-Link Single IP Management ............................................................................................................................................. 250
Single IP Management (SIM) Overview............................................................................................................................... 250
SIM Using The Web Interface ......................................................................................................................................... 251
Topology Window ................................................................................................................................................................ 252
Tool Tips ......................................................................................................................................................................................... 255
Right Click....................................................................................................................................................................................... 256

Commander Switch Icon ................................................................................................................................................................. 257
Menu Bar.......................................................................................................................................................................... 260
Device.............................................................................................................................................................................................. 261
View ................................................................................................................................................................................................ 261
Firmware Upgrade (SIM)................................................................................................................................................. 262
Configuration File Backup/Restore (SIM) ....................................................................................................................... 262
Technical Specifications ....................................................................................................................................................... 263
Cables and Connectors.......................................................................................................................................................... 265
Cable Lengths ....................................................................................................................................................................... 266
Glossary ................................................................................................................................................................................ 267

DXS-3350SR Gigabit Layer 3 Switch
Preface
The DXS-3350SR Manualis divided into sections that describe the system installation and operating instructions with
examples.
Section 1, Introduction - Describes the Switch and its features.
Section 2, Installation - Helps you get started with the basic installation of the Switch and also describes the front panel,
rear panel, side panels, and LED indicators of the Switch.
Section 3, Connecting the Switch - Tells how you can connect the Switch to your Ethernet network.
Section 4, Introduction to Switch Management - Introduces basic Switch management features, including password
protection, SNMP settings, IP address assignment and connecting devices to the Switch.
Section 5, Web-based Switch Management - Talks about connecting to and using the Web-based Switch management
feature on the Switch.
Section 6, Configuring the Switch - A detailed discussion about configuring some of the basic functions of the Switch,
including accessing the Switch information, using the Switch's utilities and setting up network switching and Layer 3
functions.
Section 7, Management - A discussion of the security features of the Switch, including Security IP, User Accounts, Access
Authentication Control, and SNMP.
Section 8, Monitoring - Features graphs and screens used in monitoring features and packets on the Switch.
Section 9, Maintenance - Features information on Switch utility functions, including TFTP Services, Switch History, Ping
Test Save Changes and Rebooting Services.
Section 10, Single IP Management - Discussion on the Single IP Management function of the Switch, including functions
and features of the Java based user interface and the utilities of the SIM function.
Appendix A, Technical Specifications - The technical specifications of the DXS-3350SR
Appendix B, Cables and Connectors - Describes the RJ-45 receptacle/connector, straight-through and crossover cables
and standard pin assignments.
Appendix C, Cable Lengths - Information on cable types and maximum distances.
Glossary - Lists definitions for terms and acronyms used in this document.
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DXS-3350SR Gigabit Layer 3 Switch
Intended Readers
The DXS-3350SR Manual contains information for setup and management of the Switch. This manual is intended for
network managers familiar with network management concepts and terminology.
Typographical Conventions
Convention Description
[ ] In a command line, square brackets indicate an optional entry. For example: [copy filename]
means that optionally you can type copy followed by the name of the file. Do not type the
brackets.
Bold font Indicates a button, a toolbar icon, menu, or menu item. For example: Open the File menu and
choose Cancel. Used for emphasis. May also indicate system messages or prompts appearing
on your screen. For example: You have mail. Bold font is also used to represent filenames,
program names and commands. For example: use the copy command.
Boldface
Typewriter Font Indicates commands and responses to prompts that must be typed exactly as printed in the
manual.
Initial capital letter Indicates a window name. Names of keys on the keyboard have initial capitals. For example:
Click Enter.
Italics Indicates a window name or a field. Also can indicate a variables or parameter that is
replaced with an appropriate word or string. For example: type filename means that you
should type the actual filename instead of the word shown in italic.
Menu Name > Menu
Option
Menu Name > Menu Option Indicates the menu structure. Device > Port > Port Properties
means the Port Properties menu option under the Port menu option that is located under the
Device menu.
Notes, Notices, and Cautions
A NOTE indicates important information that helps you make better use of
your device.
A NOTICE indicates either potential damage to hardware or loss of data
and tells you how to avoid the problem.
A CAUTION indicates a potential for property damage, personal injury, or
death.
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DXS-3350SR Gigabit Layer 3 Switch
Safety Instructions
Use the following safety guidelines to ensure your own personal safety and to help protect your system from potential
damage. Throughout this safety section, the caution icon ( ) is used to indicate cautions and precautions that you need
to review and follow.
Safety Cautions
To reduce the risk of bodily injury, electrical shock, fire, and damage to the equipment, observe the following precautions.
Observe and follow service markings.
• Do not service any product except as explained in your system documentation.
• Opening or removing covers that are marked with the triangular symbol with a lightning bolt may expose you to
electrical shock.
• Only a trained service technician should service components inside these compartments.
If any of the following conditions occur, unplug the product from the electrical outlet and replace the part or contact
your trained service provider:
• The power cable, extension cable, or plug is damaged.
• An object has fallen into the product.
• The product has been exposed to water.
• The product has been dropped or damaged.
• The product does not operate correctly when you follow the operating instructions.
• Keep your system away from radiators and heat sources. Also, do not block cooling vents.
• Do not spill food or liquids on your system components, and never operate the product in a wet environment. If the
system gets wet, see the appropriate section in your troubleshooting guide or contact your trained service provider.
• Do not push any objects into the openings of your system. Doing so can cause fire or electric shock by shorting out
interior components.
• Use the product only with approved equipment.
• Allow the product to cool before removing covers or touching internal components.
• Operate the product only from the type of external power source indicated on the electrical ratings label. If you are
not sure of the type of power source required, consult your service provider or local power company.
To help avoid damaging your system, be sure the voltage selection Switch (if provided) on the power supply is set to
match the power available at your location:
• 115 volts (V)/60 hertz (Hz) in most of North and South America and some Far Eastern countries such as
South Korea and Taiwan
• 100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan
• 230 V/50 Hz in most of Europe, the Middle East, and the Far East
• Also, be sure that attached devices are electrically rated to operate with the power available in your location.
• Use only approved power cable(s). If you have not been provided with a power cable for your system or for any
AC-powered option intended for your system, purchase a power cable that is approved for use in your country. The
power cable must be rated for the product and for the voltage and current marked on the product's electrical ratings
label. The voltage and current rating of the cable should be greater than the ratings marked on the product.
• To help prevent electric shock, plug the system and peripheral power cables into properly grounded electrical
outlets. These cables are equipped with three-prong plugs to help ensure proper grounding. Do not use adapter
plugs or remove the grounding prong from a cable. If you must use an extension cable, use a 3-wire cable with
properly grounded plugs.
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DXS-3350SR Gigabit Layer 3 Switch
• Observe extension cable and power strip ratings. Make sure that the total ampere rating of all products plugged into
the extension cable or power strip does not exceed 80 percent of the ampere ratings limit for the extension cable or
power strip.
• To help protect your system from sudden, transient increases and decreases in electrical power, use a surge
suppressor, line conditioner, or uninterruptible power supply (UPS).
• Position system cables and power cables carefully; route cables so that they cannot be stepped on or tripped over.
Be sure that nothing rests on any cables.
• Do not modify power cables or plugs. Consult a licensed electrician or your power company for site modifications.
Always follow your local/national wiring rules.
When connecting or disconnecting power to hot-pluggable power supplies, if offered with your system, observe the
following guidelines:
• Install the power supply before connecting the power cable to the power supply.
• Unplug the power cable before removing the power supply.
• If the system has multiple sources of power, disconnect power from the system by unplugging all power cables
from the power supplies.
• Move products with care; ensure that all casters and/or stabilizers are firmly connected to the system. Avoid
sudden stops and uneven surfaces.
General Precautions for Rack-Mountable Products
Observe the following precautions for rack stability and safety. Also, refer to the rack installation documentation
accompanying the system and the rack for specific caution statements and procedures.
Systems are considered to be components in a rack. Thus, "component" refers to any system as well as to various
peripherals or supporting hardware.
CAUTION: Installing systems in a rack without the front and side stabilizers installed could
cause the rack to tip over, potentially resulting in bodily injury under certain circumstances.
Therefore, always install the stabilizers before installing components in the rack. After
installing system/components in a rack, never pull more than one component out of the rack
on its slide assemblies at one time. The weight of more than one extended component could
cause the rack to tip over and may result in serious injury.
• Before working on the rack, make sure that the stabilizers are secured to the rack, extended to the floor, and that
the full weight of the rack rests on the floor. Install front and side stabilizers on a single rack or front stabilizers for
joined multiple racks before working on the rack.
• Always load the rack from the bottom up, and load the heaviest item in the rack first.
• Make sure that the rack is level and stable before extending a component from the rack.
• Use caution when pressing the component rail release latches and sliding a component into or out of a rack; the
slide rails can pinch your fingers.
• After a component is inserted into the rack, carefully extend the rail into a locking position, and then slide the
component into the rack.
• Do not overload the AC supply branch circuit that provides power to the rack. The total rack load should not
exceed 80 percent of the branch circuit rating.
• Ensure that proper airflow is provided to components in the rack.
• Do not step on or stand on any component when servicing other components in a rack.
NOTE: A qualified electrician must perform all connections to DC power and to
safety grounds. All electrical wiring must comply with applicable local or national
codes and practices.
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DXS-3350SR Gigabit Layer 3 Switch
CAUTION: Never defeat the ground conductor or operate the equipment in the
absence of a suitably installed ground conductor. Contact the appropriate electrical
inspection authority or an electrician if you are uncertain that suitable grounding is
available.
CAUTION: The system chassis must be positively grounded to the rack cabinet
frame. Do not attempt to connect power to the system until grounding cables are
connected. Completed power and safety ground wiring must be inspected by a
qualified electrical inspector. An energy hazard will exist if the safety ground cable is
omitted or disconnected.
Protecting Against Electrostatic Discharge
Static electricity can harm delicate components inside your system. To prevent static damage, discharge static electricity
from your body before you touch any of the electronic components, such as the microprocessor. You can do so by
periodically touching an unpainted metal surface on the chassis.
You can also take the following steps to prevent damage from electrostatic discharge (ESD):
1. When unpacking a static-sensitive component from its shipping carton, do not remove the component from the
antistatic packing material until you are ready to install the component in your system. Just before unwrapping the
antistatic packaging, be sure to discharge static electricity from your body.
2. When transporting a sensitive component, first place it in an antistatic container or packaging.
3. Handle all sensitive components in a static-safe area. If possible, use antistatic floor pads, workbench pads and an
antistatic grounding strap.
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DXS-3350SR Gigabit Layer 3 Switch
Section 1
Introduction
Gigabit Ethernet
Switch Description
Ports
Front-Panel Components
LED Indicators
Side Panel Description
Rear Panel Description
Gigabit Combo Ports
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DXS-3350SR Gigabit Layer 3 Switch
Gigabit Ethernet Technology
Gigabit Ethernet is an extension of IEEE 802.3 Ethernet utilizing the same packet structure, format, and support for
CSMA/CD protocol, full duplex, flow control, and management objects, but with a tenfold increase in theoretical
throughput over 100Mbps Fast Ethernet and a one hundred-fold increase over 10Mbps Ethernet. Since it is compatible with
all 10Mbps and 100Mbps Ethernet environments, Gigabit Ethernet provides a straightforward upgrade without wasting a
company's existing investment in hardware, software, and trained personnel.
The increased speed and extra bandwidth offered by Gigabit Ethernet are essential to coping with the network bottlenecks
that frequently develop as computers and their busses get faster and more users use applications that generate more traffic.
Upgrading key components, such as your backbone and servers to Gigabit Ethernet can greatly improve network response
times as well as significantly speed up the traffic between your subnetworks.
Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and similar data-
intensive applications. Likewise, since data transfers occur 10 times faster than Fast Ethernet, servers outfitted with Gigabit
Ethernet NIC's are able to perform 10 times the number of operations in the same amount of time.
In addition, the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost-effective method to take advantage of
today and tomorrow's rapidly improving Switching and routing internetworking technologies.
Switch Description
The DXS-3350SR is a manageable Gigabit stackable Switch designed to uplink network backbones, servers, workstations,
and internetwork systems. The DXS-3350SR is equipped with 48 10/100/1000 ports, which are to be used with a straight or
crossover cable in order to uplink various other networking devices. These 48 UTP ports support half or full-duplex
transmissions and have auto-negotiation.
In addition, the Switch has 4 SFP (Small Form Factor Portable) combo ports, which are to be used with fibre optical
transceiver cabling in order to uplink various other networking devices for a gigabit link that may span great distances.
These 4 SFP ports support full-duplex transmissions only, have auto-negotiation and can be used with DEM-310GT
(1000BASE-LX), DEM-311GT (1000BASE -SX), DEM-314GT (1000BASE -LH) and DEM-315GT (1000BASE -ZX)
transceivers. These four ports are referred to as “combo” ports which means that both the SFP ports and the 1000BASE-T
ports are numbered the same (45-48) and cannot be used simultaneously.
Also included at the rear of the Switch are two 10-gigabit stacking ports used to stack up to 8 Switches. The DXS-3350SR
may be used as a slave or master unit of a Switch stack when utilizing these two ports and can be configured in a Star or
Ring topology, and in total, may provide a stacking solution of up to 384gigabit ports. More information will be provided
later in this manual concerning stacking and the DXS-3350SR.
This Switch may also be equipped with an optional 2-port 10-gigabit XFP module utilizing the module slot at the rear of the
Switch. This optional module can provide a 10-gigabit fibe-optic networking solution for network administrators and is
operational in full-duplex only. This optional module is only compliant with XPF MSA transceivers.
NOTE: The four 1000BASE-T combo ports on the Switch, numbered 45-48 cannot be used
simultaneously with the corresponding SFP ports, numbered 45-48. If both ports are in use
at the same time (ex. port 45 of the SFP and port 45 of the 1000BASE-T), the SFP ports will
take priority over the combo ports and render the 1000BASE-T ports inoperable.
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DXS-3350SR Gigabit Layer 3 Switch
Features
• Support broadcast storm filtering
• Non-blocking store and forward switching scheme capability to support rate adaptation and protocol conversion
• Supports by-port Egress/Ingress rate control
• Efficient self-learning and address recognition mechanism enables forwarding rate at wire speed
• Support port-based enable and disable
• Address table: Supports up to 16K MAC addresses per device
• Supports a packet buffer of up to 4 Mbits
• Supports Port-based VLAN Groups
• Port Trunking with flexible load distribution and fail-over function
• IGMP Snooping support
• Layer 3 support including DVMRP, OSPF and RIP
• SNMP support
• Secure Sockets Layer (SSL) and Secure Shell (SSH) support
• Port Mirroring support
• MIB support for:
• RFC1213 MIB II
• RFC1493 Bridge
• RFC1757 RMON
• RFC1643 Ether-like MIB
• RFC2233 Interface MIB
• IF MIB
• Private MIB
• RFC2674 for 802.1p
• IEEE 802.1x MIB
• RS-232 DCE console port for Switch management
• IEEE 802.3z compliant
• IEEE 802.3x Flow Control in full-duplex compliant
• IEEE 802.3u compliant
• IEEE 802.3ab compliant
• IEEE 802.3ae compliant (for optional XFP module)
• IEEE 802.1p Priority Queues
• IEEE 802.3ad Link Aggregation Control Protocol support.
• IEEE 802.1x Port-based and MAC-based Access Control
• IEEE 802.1Q VLAN
• IEEE 802.1D Spanning Tree, IEEE 802.1W Rapid Spanning Tree and IEEE 802.1s Multiple Spanning Tree
support
• Stacking support in either Ring or Star topology
• Access Control List (ACL) support
• IP Multinetting support
• Protocol VLAN support
• Single IP Management support
• Access Authentication Control utilizing TACACS, XTACACS, TACACS+ and RADIUS protocols
• Dual Image Firmware
• Simple Network Time Protocol support
• MAC Notification support
• System and Port Utilization support
• System Log Support
• High performance switching engine performs forwarding and filtering at full wire speed up to 176Gbps.
• Full- and half-duplex for all gigabit ports. Full duplex allows the switch port to simultaneously transmit and
receive data. It only works with connections to full-duplex-capable end stations and switches. Connections to a
hub must take place at half-duplex.
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• Provides parallel LED display for port status such as link/act, speed, etc.

DXS-3350SR Gigabit Layer 3 Switch
Ports
• Forty-eight (48) 1000BASE-T ports that may be used to link network devices to the Switch, including PCs, hubs
and other Switches to provide a gigabit Ethernet uplink in full-duplex mode.
• Four (4) high-performance SFP combo ports for a fibre-optic connection to various network connections, for use
over great distances.
• Two (2) 10 gigabit stacking ports at the rear of the Switch for stacking Switches utilizing either a ring or star
topology.
• An optional module slot at the rear of the Switch to add an optional 2-port 10-gigabit XFP module for uplionking
using fibre optic cabling.
• RS-232 DCE Diagnostic port (console port) for setting up and managing the Switch via a connection to a console
terminal or PC using a terminal emulation program.
NOTE: For customers interested in D-View, D-Link Corporation's proprietary SNMP
management software, go to the D-Link Website (www.dlink.com.cn) and download
the software and manual.
Installing the SFP ports
The Switch is equipped with 4 SFP (Small Form Factor Portable) ports, which are to be used with fibre optical transceiver
cabling in order to uplink various other networking devices for a gigabit link that may span great distances. These 4 SFP
ports support full-duplex transmissions, have auto-negotiation and can be used with DEM-310GT (1000BASE-LX), DEM-
311GT (1000BASE -SX), DEM-314GT (1000BASE -LH) and DEM-315GT (1000BASE -ZX) transceivers. See the figure
below for installing the SFP ports in the Switch.
Figure 1- 1. Inserting the fibe-optic transceivers into the DXS-3350SR
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DXS-3350SR Gigabit Layer 3 Switch
Front-Panel Components
The front panel of the Switch consists of LED indicators for Power, Master, Console, RPS, SIO (stacking) and for Link/Act
for each port on the Switch. The front panel also includes a seven-segment LED indicating the Stack ID number, as well as
4 SFP ports, 48 1000BASE-T gigabit Ethernet ports.
DXS-3350SR
Figure 1- 2. Front Panel View of the DXS-3350SR as shipped
Comprehensive LED indicators display the status of the Switch and the network.
LED Indicators
The Switch supports LED indicators for Power, Master, Console, RPS, SIO (stacking indicators) and Port LEDs. The
following shows the LED indicators for the Switch along with an explanation of each indicator.
Figure 1- 3. LED Indicators
LED Description
Power This LED will light green after the Switch is powered on to indicate the ready state of the
device. The indicator is dark when the Switch is powered off.
Master This LED will light solid green when the Switch is configured to be a master Switch of a Switch
stack in a ring topology or when it is in use as a stand-alone Switch. This LED will remain dark
if the Switch is not configured to be a master Switch of a Switch stack.
Console This LED should blink during the Power-On Self Test (POST). When the POST is finished
successfully, the LED goes dark. This indicator will light solid green when the Switch is being
logged into via out-of-band/local console management through the RS-232 console port in the
front of the Switch using a straight-through serial cable.
This LED will light solid amber if the Power-On-Self-Test has failed.
RPS This LED will be lit solid amber when the internal power has failed and the RPS has taken over
the power supply to the Switch. Otherwise, it will remain dark.
Port LEDs One row of LEDs for each port is located above the ports on the front panel. The first LED is
for the top port and the second one is for the bottom ports. A solid light denotes a valid link on
the port while a blinking light indicates packet activity on the port. These LEDs will remain dark
if there is no link/activity on the port.
Stacking Ports
(SIO)
There are two LEDs in the front of the Switch marked SIO, and they relate to the two 10-
gigabit stacking ports at the rear of the Switch. These LEDs are marked 1 and 2 and will light
solid green to denote a valid link on the port, while a blinking light indicates packet activity on
the port.
Stack ID These two seven segment LEDs display the current Switch stack order of the Switch while in
use. Possible numbers to be displayed range from 1-12.
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DXS-3350SR Gigabit Layer 3 Switch
Rear Panel Description
The rear panel of the Switch contains an AC power connector, an optional module slot for uplinking 2 XFP fibre-optic
ports, 2 10-gigabit stacking ports, a redundant power supply connector, a RS-232 DCE console port for Switch management
and a system fan.
Figure 1- 4. Rear panel view of the Switch
The AC power connector is a standard three-pronged connector that supports the power cord. Plug-in the female connector
of the provided power cord into this socket, and the male side of the cord into a power outlet. The Switch automatically
adjusts its power setting to any supply voltage in the range from 100 ~ 240 VAC at 50 ~ 60 Hz.
The rear panel also includes an outlet for an optional external power supply. When power fails, the optional external RPS
will take over all the power immediately and automatically.
Side Panel Description
The right-hand side panel of the Switch contains 3 system fans, while the left hand panel includes 2 heat vents.
The system fans are used to dissipate heat. The sides of the system also provide heat vents to serve the same purpose. Do not
block these openings, and leave at least 6 inches of space at the rear and sides of the Switch for proper ventilation. Be
reminded that without proper heat dissipation and air circulation, system components might overheat, which could lead to
system failure.
Figure 1- 5. Side Panels
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