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DGS-3300
Reference Guide
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User Manual
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D-link DGS-3300 Reference Guide

User Manual
Layer 3 Stackable Gigabit Ethernet Switch
Release 4.30
TM
DGS/DXS-3300 Series
©Copyright 2006. All rights reserved.
xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
______________________________________________
Information in this document is subject to change without notice.
© 2006 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.
April 2006 P/N 651XSTACK065G
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Table of Contents

Preface.................................................................................................................................................... xi
Intended Readers.............................................................................................................................................................. xii
Typographical Conventions............................................................................................................................................................. xii
Notes, Notices, and Cautions............................................................................................................................................ xii
Safety Instructions........................................................................................................................................................... xiii
Safety Cautions............................................................................................................................................................................... xiii
General Precautions for Rack-Mountable Products........................................................................................................................ xiv
Protecting Against Electrostatic Discharge...................................................................................................................................... xv
Introduction............................................................................................................................................ 1
Ethernet Technology ...........................................................................................................................................................1
Fast Ethernet...................................................................................................................................................................................... 1
Gigabit Ethernet Technology............................................................................................................................................................. 1
Switching Technology....................................................................................................................................................................... 2
Switch Description............................................................................................................................................................................. 2
Features.............................................................................................................................................................................................. 3
Ports................................................................................................................................................................................................... 4
Installing the SFP ports ................................................................................................................................................................ 5
Front-Panel Components ................................................................................................................................................................... 5
LED Indicators .................................................................................................................................................................................. 6
Rear Panel Description ...................................................................................................................................................................... 7
Side Panel Description....................................................................................................................................................................... 8
Installation .............................................................................................................................................. 9
Package Contents............................................................................................................................................................................... 9
Before Connecting to the Network .................................................................................................................................................... 9
Installing the Switch without the Rack ............................................................................................................................................ 10
Installing the Switch in a Rack ........................................................................................................................................................ 10
Mounting the Switch in a Standard 19" Rack............................................................................................................................. 11
Power On.................................................................................................................................................................................... 11
Power Failure ............................................................................................................................................................................. 11
The Optional Module....................................................................................................................................................................... 11
The Media Accessory ...................................................................................................................................................................... 13
External Redundant Power System ............................................................................................................................................ 14
Connecting the Switch ......................................................................................................................... 15
Switch to End Node......................................................................................................................................................................... 15
Switch to Hub or Switch.................................................................................................................................................................. 16
Connecting To Network Backbone or Server.................................................................................................................................. 17
Stacking and the xStack DGS/DXS-3300 Series ............................................................................................................................. 18
Stacking Limitations Utilizing a Ring or Star Topology ............................................................................................................ 20
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Stacking In a Star Topology ....................................................................................................................................................... 22
Introduction to Switch Management.................................................................................................. 23
Management Options ........................................................................................................................................................23
Web-based Management Interface................................................................................................................................................... 23
SNMP-Based Management.............................................................................................................................................................. 23
Command Line Console Interface through the Serial Port .............................................................................................................. 23
Connecting the Console Port (RS-232 DCE).............................................................................................................................. 23
First Time Connecting to the Switch ............................................................................................................................................... 25
Password Protection......................................................................................................................................................................... 27
SNMP Settings ................................................................................................................................................................................ 28
Traps........................................................................................................................................................................................... 28
MIBs........................................................................................................................................................................................... 28
IP Address Assignment.................................................................................................................................................................... 29
Connecting Devices to the Switch................................................................................................................................................... 30
Introduction to Web-based Switch Configuration............................................................................ 31
Introduction .......................................................................................................................................................................31
Logging on to the Web Manager ..................................................................................................................................................... 31
Web-based User Interface................................................................................................................................................................ 33
Areas of the User Interface......................................................................................................................................................... 33
Web Pages ....................................................................................................................................................................................... 34
Configuring the Switch........................................................................................................................ 35
Switch Information............................................................................................................................................................36
IP Address .........................................................................................................................................................................37
Setting the Switch's IP Address using the Console Interface...................................................................................................... 39
Advanced Settings.............................................................................................................................................................40
Box Information ................................................................................................................................................................42
Port Configuration.............................................................................................................................................................43
Port Description.................................................................................................................................................................45
Port Mirroring ...................................................................................................................................................................46
Link Aggregation ..............................................................................................................................................................47
Understanding Port Trunk Groups.............................................................................................................................................. 47
LACP Port Setting.............................................................................................................................................................50
MAC Notification..............................................................................................................................................................51
MAC Notification Global Settings............................................................................................................................................. 51
MAC Notification Port Settings ................................................................................................................................................. 52
IGMP Snooping.................................................................................................................................................................53
Static Router Ports........................................................................................................................................................................... 55
Spanning Tree ...................................................................................................................................................................56
802.1s MSTP.............................................................................................................................................................................. 56
802.1w Rapid Spanning Tree ..................................................................................................................................................... 56
Port Transition States ................................................................................................................................................................. 56
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Edge Port.................................................................................................................................................................................... 57
P2P Port...................................................................................................................................................................................... 57
802.1d / 802.1w / 802.1s Compatibility...................................................................................................................................... 57
STP Bridge Global Settings............................................................................................................................................................. 58
MST Configuration Table................................................................................................................................................................ 60
MSTP Port Information ................................................................................................................................................................... 63
STP Instance Settings ...................................................................................................................................................................... 64
STP Port Settings............................................................................................................................................................................. 67
Forwarding & Filtering .....................................................................................................................................................69
Unicast Forwarding ......................................................................................................................................................................... 69
Multicast Forwarding....................................................................................................................................................................... 70
VLANs ..............................................................................................................................................................................71
Understanding IEEE 802.1p Priority ............................................................................................................................................... 71
VLAN Description........................................................................................................................................................................... 71
Notes about VLANs in the xStack DGS/DXS-3300 Series........................................................................................................ 71
IEEE 802.1Q VLANs ...................................................................................................................................................................... 72
802.1Q VLAN Tags ................................................................................................................................................................... 73
Port VLAN ID............................................................................................................................................................................ 74
Tagging and Untagging .............................................................................................................................................................. 74
Ingress Filtering.......................................................................................................................................................................... 74
Default VLANs .......................................................................................................................................................................... 75
Port-based VLANs ..................................................................................................................................................................... 75
VLAN Segmentation.................................................................................................................................................................. 75
VLAN and Trunk Groups........................................................................................................................................................... 76
Protocol VLANs......................................................................................................................................................................... 76
Static VLAN Entry .......................................................................................................................................................................... 77
GVRP Settings................................................................................................................................................................................. 81
Traffic Control...................................................................................................................................................................83
Port Security......................................................................................................................................................................84
Port Lock Entries...............................................................................................................................................................85
QoS....................................................................................................................................................................................86
The Advantages of QoS................................................................................................................................................................... 86
Understanding QoS.......................................................................................................................................................................... 87
Bandwidth Control........................................................................................................................................................................... 88
QoS Scheduling Mechanism............................................................................................................................................................ 89
QoS Output Scheduling ................................................................................................................................................................... 90
Configuring the Combination Queue.......................................................................................................................................... 91
802.1p Default Priority .................................................................................................................................................................... 92
802.1p User Priority......................................................................................................................................................................... 93
Traffic Segmentation ....................................................................................................................................................................... 93
System Log Host ...............................................................................................................................................................95
SNTP Settings ...................................................................................................................................................................97
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Time Settings.............................................................................................................................................................................. 97
Time Zone and DST ................................................................................................................................................................... 98
Access Profile Table........................................................................................................................................................100
Configuring the Access Profile Table............................................................................................................................................ 100
CPU Access Profile .........................................................................................................................................................117
CPU Access Profile Table ............................................................................................................................................................. 117
System Severity Settings.................................................................................................................................................131
Port Access Entity (802.1X)............................................................................................................................................132
802.1x Port-Based and MAC-Based Access Control..................................................................................................................... 132
Authentication Server............................................................................................................................................................... 133
Authenticator............................................................................................................................................................................ 133
Client........................................................................................................................................................................................ 134
Authentication Process............................................................................................................................................................. 134
Understanding 802.1x Port-based and MAC-based Network Access Control............................................................................... 135
Port-Based Network Access Control ............................................................................................................................................. 135
MAC-Based Network Access Control........................................................................................................................................... 136
Configure Authenticator ................................................................................................................................................................ 137
802.1X User ............................................................................................................................................................................. 139
PAE System Control...................................................................................................................................................................... 140
Port Capability.......................................................................................................................................................................... 140
Initializing Ports for Port Based 802.1x.................................................................................................................................... 141
Initializing Ports for MAC Based 802.1x ................................................................................................................................. 142
Reauthenticate Port(s) for Port Based 802.1x........................................................................................................................... 142
Reauthenticate Port(s) for MAC-based 802.1x......................................................................................................................... 143
RADIUS Server............................................................................................................................................................................. 144
Layer 3 IP Networking ....................................................................................................................................................145
Layer 3 Global Advanced Settings ................................................................................................................................................ 145
IP Multinetting............................................................................................................................................................................... 146
IP Interface Setup ..................................................................................................................................................................... 146
MD5 Key Table Configuration...................................................................................................................................................... 149
Route Redistribution Settings ........................................................................................................................................................ 149
Static/Default Route Settings......................................................................................................................................................... 151
Route Preference Settings.............................................................................................................................................................. 153
Static ARP Table ........................................................................................................................................................................... 155
RIP................................................................................................................................................................................................. 156
RIP Global Settings.................................................................................................................................................................. 158
RIP Settings.............................................................................................................................................................................. 159
OSPF ............................................................................................................................................................................................. 161
OSPF Global Settings............................................................................................................................................................... 178
OSPF Area Setting ................................................................................................................................................................... 178
OSPF Interface Settings ........................................................................................................................................................... 180
OSPF Virtual Link Settings...................................................................................................................................................... 182
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
OSPF Area Aggregation Settings............................................................................................................................................. 184
OSPF Host Route Settings........................................................................................................................................................ 185
DHCP / BOOTP Relay.................................................................................................................................................................. 186
DHCP / BOOTP Relay Information......................................................................................................................................... 186
DHCP/BOOTP Relay Interface Settings.................................................................................................................................. 187
DNS Relay..................................................................................................................................................................................... 188
Configuring DNS Relay Information ....................................................................................................................................... 188
DNS Relay Static Settings........................................................................................................................................................ 189
VRRP............................................................................................................................................................................................. 190
VRRP Global Settings.............................................................................................................................................................. 190
VRRP Virtual Router Settings.................................................................................................................................................. 191
VRRP Authentication Settings................................................................................................................................................. 194
IP Multicast Routing Protocol ....................................................................................................................................................... 196
IGMP........................................................................................................................................................................................ 196
IGMP Versions 1 and 2 ................................................................................................................................................................. 196
IGMP Version 3............................................................................................................................................................................. 197
IGMP Interface Configuration.................................................................................................................................................. 199
DVMRP Interface Configuration................................................................................................................................................... 201
DVMRP Global Settings .......................................................................................................................................................... 201
DVMRP Interface Settings....................................................................................................................................................... 201
PIM Protocol ................................................................................................................................................................................. 203
PIM-SM.................................................................................................................................................................................... 203
PIM-DM Interface Configuration............................................................................................................................................. 204
PIM Global Settings ................................................................................................................................................................. 204
PIM Interface Settings.............................................................................................................................................................. 204
PIM Candidate BSR Settings ................................................................................................................................................... 206
PIM Parameter Settings............................................................................................................................................................ 207
PIM Candidate RP Global Settings .......................................................................................................................................... 208
PIM Candidate RP Settings...................................................................................................................................................... 208
PIM Register Checksum Settings............................................................................................................................................. 209
PIM Static RP Settings............................................................................................................................................................. 210
Security Management ........................................................................................................................ 211
Security IP .......................................................................................................................................................................211
User Accounts .................................................................................................................................................................212
Admin and User Privileges....................................................................................................................................................... 213
Access Authentication Control........................................................................................................................................214
Authentication Policy & Parameters.............................................................................................................................................. 215
Application's Authentication Settings............................................................................................................................................ 216
Authentication Server Group......................................................................................................................................................... 217
Authentication Server Host............................................................................................................................................................ 218
Login Method Lists........................................................................................................................................................................ 220
Enable Method Lists...................................................................................................................................................................... 222
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Configure Local Enable Password................................................................................................................................................. 224
Enable Admin................................................................................................................................................................................ 225
Secure Socket Layer (SSL) .............................................................................................................................................226
Download Certificate..................................................................................................................................................................... 227
Configuration................................................................................................................................................................................. 228
Secure Shell (SSH)..........................................................................................................................................................230
SSH Server Configuration ............................................................................................................................................................. 230
SSH Authentication Mode and Algorithm Settings....................................................................................................................... 232
SSH User Authentication Mode..................................................................................................................................................... 234
SNMP Manager.................................................................................................................................. 235
SNMP Settings .............................................................................................................................................................................. 235
SNMP User Table.......................................................................................................................................................................... 236
SNMP View Table......................................................................................................................................................................... 238
SNMP Group Table ....................................................................................................................................................................... 239
SNMP Community Table .............................................................................................................................................................. 241
SNMP Host Table.......................................................................................................................................................................... 242
SNMP Engine ID........................................................................................................................................................................... 243
Monitoring .......................................................................................................................................... 244
Port Utilization ................................................................................................................................................................245
CPU Utilization ...............................................................................................................................................................246
Packets.............................................................................................................................................................................247
Received (RX) ............................................................................................................................................................................... 247
UMB Cast (RX)............................................................................................................................................................................. 249
Transmitted (TX)........................................................................................................................................................................... 251
Errors...............................................................................................................................................................................253
Received (RX) ............................................................................................................................................................................... 253
Transmitted (TX)........................................................................................................................................................................... 255
Size..................................................................................................................................................................................257
Stacking Information.......................................................................................................................................................259
Module Information ........................................................................................................................................................261
Device Status...................................................................................................................................................................262
MAC Address..................................................................................................................................................................263
Switch History Log .........................................................................................................................................................265
IGMP Snooping Group ...................................................................................................................................................266
IGMP Snooping Forwarding...........................................................................................................................................267
Browse Router Port .........................................................................................................................................................268
Port Access Control.........................................................................................................................................................269
Authenticator State ........................................................................................................................................................................ 269
Authenticator Statistics.................................................................................................................................................................. 271
Authenticator Session Statistics..................................................................................................................................................... 272
Authenticator Diagnostics.............................................................................................................................................................. 274
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
RADIUS Authentication................................................................................................................................................................ 276
RADIUS Accounting..................................................................................................................................................................... 277
Layer 3 Feature................................................................................................................................................................279
Browse IP Address Table .............................................................................................................................................................. 279
Browse Routing Table ................................................................................................................................................................... 280
Browse ARP Table ........................................................................................................................................................................ 280
Browse IP Multicast Forwarding Table......................................................................................................................................... 281
Browse IGMP Group Table........................................................................................................................................................... 282
OSPF Monitoring .......................................................................................................................................................................... 284
Browse OSPF LSDB Table ...................................................................................................................................................... 284
Browse OSPF Neighbor Table ................................................................................................................................................. 286
OSPF Virtual Neighbor ............................................................................................................................................................ 286
DVMRP Monitoring...................................................................................................................................................................... 287
Browse DVMRP Routing Table............................................................................................................................................... 287
Browse DVMRP Neighbor Table............................................................................................................................................. 288
Browse DVMRP Routing Next Hop Table .............................................................................................................................. 288
PIM Monitoring............................................................................................................................................................................. 289
Browse PIM Neighbor Table.................................................................................................................................................... 289
PIM IP MRoute Table .............................................................................................................................................................. 289
Browse PIM RP Set Table........................................................................................................................................................ 290
Switch Maintenance........................................................................................................................... 291
TFTP Services .................................................................................................................................................................291
Download Firmware ...................................................................................................................................................................... 291
Download Configuration File ........................................................................................................................................................ 292
Download PROM .......................................................................................................................................................................... 292
Upload Configuration .................................................................................................................................................................... 292
Upload Log.................................................................................................................................................................................... 293
Multiple Image Services..................................................................................................................................................294
Firmware Information.................................................................................................................................................................... 294
Config Firmware Image................................................................................................................................................................. 295
CompactFlash Services ...................................................................................................................................................296
CF Card Information...................................................................................................................................................................... 296
Download Firmware from CF........................................................................................................................................................ 297
Download Configuration from CF................................................................................................................................................. 297
Upload Firmware to CF................................................................................................................................................................. 298
Upload Config to CF ..................................................................................................................................................................... 298
Upload Log to CF.......................................................................................................................................................................... 299
FS Commands................................................................................................................................................................................ 300
Format ...................................................................................................................................................................................... 300
Copy ......................................................................................................................................................................................... 300
Md/Mkdir ................................................................................................................................................................................. 301
Rd/Rmdir.................................................................................................................................................................................. 301
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Dir ............................................................................................................................................................................................ 301
Rename..................................................................................................................................................................................... 301
Ping Test..........................................................................................................................................................................302
Save Changes ..................................................................................................................................................................302
Reset................................................................................................................................................................................303
Reboot System.................................................................................................................................................................304
Logout .............................................................................................................................................................................304
D-Link Single IP Management .........................................................................................................305
Single IP Management (SIM) Overview.........................................................................................................................305
The Upgrade to v1.6.1.............................................................................................................................................................. 306
SIM Using the Web Interface..........................................................................................................................................308
Topology .........................................................................................................................................................................309
Tool Tips .........................................................................................................................................................................311
Right Click..................................................................................................................................................................................... 313
Group Icon................................................................................................................................................................................ 313
Commander Switch Icon .......................................................................................................................................................... 314
Member Switch Icon ................................................................................................................................................................ 314
Candidate Switch Icon.............................................................................................................................................................. 315
Menu Bar....................................................................................................................................................................................... 317
Group........................................................................................................................................................................................ 317
Device ...................................................................................................................................................................................... 317
View ......................................................................................................................................................................................... 317
Firmware Upgrade...........................................................................................................................................................318
Configuration File Backup/Restore.................................................................................................................................318
Upload Log File...............................................................................................................................................................318
Appendix A ......................................................................................................................................... 319
Appendix B .........................................................................................................................................321
Cables and Connectors ............................................................................................................................................................. 321
Appendix C ......................................................................................................................................... 322
Cable Lengths........................................................................................................................................................................... 322
Glossary............................................................................................................................................... 323
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Preface
The xStack DGS/DXS-3300 Series Manual is 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 getting 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 to connect the Switch to the 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, Introduction to 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 configurations, such as Quality of Service, the Access Profile Table, port mirroring and configuring the Spanning Tree.
Section 7, Management - A discussion of the security features of the Switch, including Security IP, User Accounts, and Access Authentication Control.
Section 8, SNMP Manager – A detailed discussion regarding the Simple Network Monitoring Protocol including description of features and a brief introduction to SNMP.
Section 9, Monitoring - Features graphs and screens used in monitoring features and packets on the Switch.
Section 10, Maintenance - Features information on Switch utility functions, including TFTP Services, Switch History,
Ping Test Save Changes and Rebooting Services.
Section 11, 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 switches in the xStack DGS/DXS-3300 Series.
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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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Intended Readers

The xStack DGS/DXS-3300 Series 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
[ ]
Bold font
Boldface Typewriter Font
Initial capital letter
Italics
Menu Name > Menu Option
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.
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 screen. For example: You have mail. Bold font is also used to represent filenames, program names and commands. For example: use the copy command.
Indicates commands and responses to prompts that must be typed exactly as printed in the manual.
Indicates a window name. Names of keys on the keyboard have initial capitals. For example: Click Enter.
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 the actual filename should be typed instead of the word shown in italic.
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 make better use of the device.
A NOTICE indicates either potential damage to hardware or loss of data and tells how to avoid the problem.
A CAUTION indicates a potential for property damage, personal injury, or death.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

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 need to be
reviewed and followed.

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 the system documentation.
• Opening or removing covers that are marked with the triangular symbol with a lightning bolt may expose the
user 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:
• Damage to the power cable, extension cable, or plug.
• 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 the operating instructions are correctly followed.
• Keep your system away from radiators and heat sources. Also, do not block cooling vents.
• Do not spill food or liquids on system components, and never operate the product in a wet environment. If the system
gets wet, see the appropriate section in the troubleshooting guide or contact your trained service provider.
• Do not push any objects into the openings of the 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 unsure of
the type of power source required, consult your service provider or local power company.
• To help avoid damaging the system, be sure the voltage selection switch (if provided) on the power supply is set to match the power available at the Switch’s 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.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
• 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 using an extension cable is necessary, use a 3-wire cable with properly grounded plugs.
• 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 the 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.
• 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.
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.
• 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.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
• 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.
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 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 the system. To prevent static damage, discharge static electricity from your body before touching any of the electronic components, such as the microprocessor. This can be done by periodically touching an unpainted metal surface on the chassis.
The following steps can also be taken 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 ready to install the component in the 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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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Section 1
Introduction

Ethernet Technology

Switch Description
Features
Ports
Front-Panel Components
Side Panel Description
Rear Panel Description
Gigabit Combo Ports
Ethernet Technology

Fast Ethernet Technology

The DGS/DXS-3300 Layer 3 stackable Gigabit Ethernet switches are members of the D-Link xStack family. Ranging from 10/100Mbps edge switches to core gigabit switches, the xStack switch family has been future-proof designed to provide a stacking architecture with fault tolerance, flexibility, port density, robust security and maximum throughput with a user­friendly management interface for the networking professional.
The following manual describes the installation, maintenance and configurations concerning members of the xStack DGS/DXS-3300 Switch Series. These four switches, the DGS-3324SRi, DGS-3324SR, DXS-3326GSR and the DXS­3350SR are all very similar in configurations and basic hardware and consequentially, most of the information in this manual will be universal to the whole xStack DGS/DXS-3300 Switch Series. Corresponding screen pictures of the web manager may be taken from any one of these switches but the configuration will be identical, except for varying port counts.
Ethernet Technology

Fast Ethernet

The growing importance of LANs and the increasing complexity of desktop computing applications are fueling the need for high performance networks. A number of high-speed LAN technologies are proposed to provide greater bandwidth and improve client/server response times. Among them, Fast Ethernet, or 100BASE-T, provides a non-disruptive, smooth evolution from 10BASE-T technology.
100Mbps Fast Ethernet is a standard specified by the IEEE 802.3 LAN committee. It is an extension of the 10Mbps Ethernet standard with the ability to transmit and receive data at 100Mbps, while maintaining the Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Ethernet protocol.

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 the backbone and servers to Gigabit Ethernet can greatly improve network response times as well as significantly speed up the traffic between sub networks.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Gigabit Ethernet enables fast optical-fiber connections to support video conferencing, complex imaging, and similar data­intensive 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’s and tomorrow's rapidly improving switching and routing internetworking technologies.

Switching Technology

Another key development pushing the limits of Ethernet technology is in the field of switching technology. A switch bridges Ethernet packets at the MAC address level of the Ethernet protocol transmitting among connected Ethernet or Fast Ethernet LAN segments.
Switching is a cost-effective way of increasing the total network capacity available to users on a local area network. A switch increases capacity and decreases network loading by making it possible to divide a local area network into different segments, which are not competing with each other for network transmission capacity, and therefore decreasing the load on each segment.
The Switch acts as a high-speed selective bridge between the individual segments. The Switch will automatically forward network traffic intended to travel from one segment (Port) to another, without interfering with any other segments (ports). This allows the total network capacity to be multiplied, while still maintaining the same network cabling and adapter cards.
For Fast Ethernet or Gigabit Ethernet networks, a switch is an effective way of eliminating problems of chaining hubs beyond the "two-repeater limit." A switch can be used to split parts of the network into different collision domains, for example, making it possible to expand the Fast Ethernet network beyond the 205-meter network diameter limit for 100BASE-TX networks. Switches supporting both traditional 10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for bridging between existing 10Mbps networks and new 100Mbps networks.
Switching LAN technology is a marked improvement over the previous generation of network bridges, which were characterized by higher latencies. Routers have also been used to segment local area networks, but the cost of a router and the setup and maintenance required make routers relatively impractical. Today's switches are an ideal solution to most kinds of local area network congestion problems.

Switch Description

D-Link's next-generation xStack DGS/DXS-3300 Series switches 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, are available from the xStack DGS/DXS­3300 Switch Series at the price of a stackable switch!
All xStack DGS/DXS-3300 Series switches have some combination of 1000BASE-T ports, XFP ports and 10-Gigabit stacking ports that may be used in uplinking various network devices to the Switch, including PCs, hubs and other switches to provide a gigabit Ethernet uplink in full-duplex mode. The SFP (Small Form Factor Portable) combo ports are to be used with fiber-optical transceiver cabling in order to uplink various other networking devices for a gigabit link that may span great distances. These SFP ports support full-duplex transmissions, have auto-negotiation and can be used with DEM­310GT (1000BASE-LX), DEM-311GT (1000BASE-SX), DEM-314GT (1000BASE-LH) and DEM-315GT (1000BASE­ZX) transceivers. These ports are referred to as “combo” ports which means that both the SFP ports and the 1000BASE-T ports are numbered the same and cannot be used simultaneously. Attempting to use the ports simultaneously will cause a link down status for the 1000BASE-T ports. SFP ports will always have priority over these 1000BASE-T ports.
Also included at the rear of the xStack DGS/DXS-3300 Series switches are 10-gigabit stacking ports used to stack other xStack DGS/DXS-3300 Series switches. The DGS-3324SRi may be used as the master unit of a switch stack when utilizing these ports and can be configured in a Star topology, and in total, may provide a stacking solution of up to 312 gigabit ports. Other switches of the xStack DGS/DXS-3300 Series may utilize these ports for stacking in a ring topology or in combination with the DGS-3324SRi master switch in a star topology. More information will be provided later in this manual concerning stacking the xStack DGS/DXS-3300 Series switches.
NOTE: The SFP combo ports on the Switch cannot be used simultaneously with the corresponding 1000BASE-T ports. If both ports are in use at the same time (ex. port 21 of the SFP and port 21 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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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Features

• 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 128Gbps.
• 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.
• 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 8K MAC addresses per device
• Supports a packet buffer of up to 3 Mbits
• Supports Port-based VLAN Groups
• Port Trunking with flexible load distribution and fail-over function
• IGMP Snooping support
• IGMP version 3
• Layer 3 support including DVMRP, OSPF and RIP
• SNMP support
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
• Secure Sockets Layer (SSL) and Secure Shell (SSH) support
• System Severity control
• 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
• Provides parallel LED display for port status such as link/act, speed, etc.

Ports

DGS-3324SRi
Twenty-four
10/100/1000BASE-T
Gigabit ports
Eight Combo SFP
Ports
Six 10-Gigabit
stacking ports
One console port
One CompactFlash
slot
DGS-3324SR
Twenty-four
10/100/1000BASE-T
Gigabit ports
Four Combo SFP
Ports
Two 10-Gigabit
stacking ports
One console port
DXS-3326GSR
Four Combo
10/100/1000BASE-T
Gigabit ports
Twenty-four SFP
Ports
Two 10-Gigabit
stacking ports
One console port
One open slot to add
a 2-port 10-gigabit
Uplink Module
DXS-3350SR
Forty-eight
10/100/1000BASE-T
Gigabit ports
Four Combo SFP
Ports
Two 10-Gigabit
stacking ports
One console port
One open slot to add
a 2-port 10-gigabit
Uplink Module
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.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Installing the SFP ports

The xStack DGS/DXS-3300 Series switches are equipped with SFP (Small Form Factor Portable) ports, which are to be used with fiber-optical transceiver cabling in order to uplink various other networking devices for a gigabit link that may span great distances. These SFP ports support full-duplex transmissions, have auto-negotiation and can be used with DEM­310GT (1000BASE-LX), DEM-311GT (1000BASE-SX), DEM-314GT (1000BASE-LH) and DEM-315GT (1000BASE­ZX) transceivers. See the figure below for installing the SFP ports in the Switch.
Figure 1- 1. Inserting the fiber-optic transceivers into the DGS-3324SRi

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 may also include a seven-segment LED (not supported for the DGS­3324SRi) indicating the Stack ID number, as well as gigabit Ethernet ports and SFP ports. Comprehensive LED indicators display the status of the Switch and the network.
DGS-3324SRi
Figure 1- 2. Front Panel View of the DGS-3324SRi as shipped
DGS-3324SR
Figure 1- 3. Front Panel View of the DGS-3324SR as shipped
DXS-3326GSR
DXS-3350SR
Figure 1- 4. Front Panel View of the DXS-3326GSR as shipped
Figure 1- 5. Front Panel View of the DXS-3350SR as shipped
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

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- 6. LED Indicators
LED Description
Power
Master
Console
RPS
Port LEDs
Stacking Ports (SIO)
This LED will light green after powering the Switch on to indicate the ready state of the device. The indicator is dark when the Switch is powered off.
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 or as a standalone switch.
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 straight­through serial cable.
This LED will light solid amber if the Power-On-Self-Test has failed.
This LED will light when the internal power has failed and the RPS has taken over the power supply to the Switch. Otherwise, it will remain dark.
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 activity on the port. These LEDs will remain dark if there is no link/activity on the port.
There are six LEDs in the front of the DGS-3324SRi marked SIO 1-6, and they relate to the six 10-gigabit stacking ports at the rear of the Switch. For the DGS­3324SR, DXS-3326GSR and the DXS-3350SR, there are only two stacking ports and therefore only two SIO LEDs, marked 1 and 2. These LEDs will light solid green to denote a valid link 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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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Rear Panel Description

DGS-3324SRi
The rear panel of the DGS-3324SRi contains an AC power connector, six 10-gigabit stacking ports, a redundant power supply connector and an available slot to insert the CompactFlash card (storage media accessory).
Figure 1- 7. Rear panel view of DGS-3324SRi
DGS-3324SR
The rear panel of the DGS-3324SR contains an AC power connector, two 10-gigabit stacking ports, a redundant power supply connector and a system fan.
Figure 1- 8. Rear panel view of DGS-3324SR
DXS-3326GSR
The rear panel of the DXS-3326GSR contains an AC power connector, an optional module slot for uplinking a 2-port module, two 10-gigabit stacking ports, a redundant power supply connector and a system fan.
Figure 1- 9. Rear panel view of DXS-3326GSR
DXS-3350SR
The rear panel of the DXS-3350SR contains an AC power connector, an optional module slot for uplinking a 2-port module, two 10-gigabit stacking ports, a redundant power supply connector, a RS-232 DCE console port for Switch management and a system fan.
Figure 1- 10. Rear panel view of DXS-3350SR
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 a power failure occurs, the optional external RPS will immediately and automatically assume the power supply for the Switch.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Side Panel Description

DGS-3324SRi & DGS-3324SR
The right-hand side panel of the Switch contains two system fans, while the left hand panel includes a heat vent.
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- 11. Side Panels
DXS-3326GSR & DXS-3350SR
The right-hand side panel of the Switch contains three system fans, while the left hand panel includes two 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 six 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- 12. Side Panels
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
SECTION 2
Installation

Package Contents

Before Connecting to the Network

Installing the Switch without the Rack

Rack Installation

Power On

The Optional Module

Redundant Power System

Package Contents

Open the shipping carton of the Switch and carefully unpack its contents. The carton should contain the following items:
• One xStack Stackable Switch
• One AC power cord
• This H/W Installation & Getting Started Guide
• Mounting kit (two brackets and screws)
• Four rubber feet with adhesive backing
• RS-232 console cable
• One Infiniband Stacking Cable 4x50CM
• One CD Kit for User’s Guide/CLI/D-View module
• One CD Kit for D-View 5.1 Trial version.
• One Generic QIG
• Registration card & China Warranty Card (for China only)
If any item is found missing or damaged, please contact your local D-Link reseller for replacement.

Before Connecting to the Network

The site where the Switch is installed may greatly affect its performance. Please follow these guidelines for setting up the Switch.
• Install the Switch on a sturdy, level surface that can support at least 6.6 lb. (3 kg) of weight. Do not place heavy
objects on the Switch.
• The power outlet should be within 1.82 meters (6 feet) of the Switch.
• Visually inspect the power cord and see that it is fully secured to the AC power port.
• Make sure that there is proper heat dissipation from and adequate ventilation around the Switch. Leave at least
10 cm (4 inches) of space at the front and rear of the Switch for ventilation.
• Install the Switch in a fairly cool and dry place for the acceptable temperature and humidity operating ranges.
• Install the Switch in a site free from strong electromagnetic field generators (such as motors), vibration, dust,
and direct exposure to sunlight.
• When installing the Switch on a level surface, attach the rubber feet to the bottom of the device. The rubber feet
cushion the Switch, protect the casing from scratches and prevent it from scratching other surfaces.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Installing the Switch without the Rack

First, attach the rubber feet included with the Switch if installing on a desktop or shelf. Attach these cushioning feet on the bottom at each corner of the device. Allow enough ventilation space between the Switch and any other objects in the vicinity.
Figure 2- 1. Prepare Switch for installation on a desktop or shelf

Installing the Switch in a Rack

The Switch can be mounted in a standard 19" rack. Use the following diagrams as a guide.
Figure 2- 2. Fasten mounting brackets to Switch
Fasten the mounting brackets to the Switch using the screws provided. With the brackets attached securely, the Switch can be mounted in a standard rack as shown in Figure 2-3 on the following page.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

Mounting the Switch in a Standard 19" Rack

Figure 2- 3. Installing Switch in a rack

Power On

Plug one end of the AC power cord into the power connector of the Switch and the other end into the local power source outlet.
After powering on the Switch, the LED indicators will momentarily blink. This blinking of the LED indicators represents a reset of the system.

Power Failure

As a precaution, in the event of a power failure, unplug the Switch. When power is resumed, plug the Switch back in.

The Optional Module

At the rear of the DXS-3326GSR and the DXS-3350SR resides an optional module slot. This slot may be equipped with the DEM-420X 2-port 10GE XFP uplink module, or a DEM-420CX 2-port 10GBASE-CX4 uplink module, both sold separately.
Adding the DEM-420X optional module will allow the administrator to add a 2-port fiber-optic uplink module which will transmit information at a rate of ten gigabits a second. These two ports are compliant with standard IEEE 802.3ae, support full-duplex transmissions only and are to be used with XFP MSA compliant transceivers.
The DEM-420CX will too transfer information at a rate of ten gigabits a second but the medium is copper, not fiber and thus is only useful for short connections of up to 15 meters. Compliant with the IEEE802.3ak standard, this module will use a 4-laned copper connector to transfer information in full-duplex mode, quickly and accurately. User beware, the cable and connector port used for this module is nearly identical to the stacking ports and cables used for stacking in the xStack Series, but can in no way be interchangeable.
To install these modules in the DXS-3326GSR and the DXS-3350SR, follow the simple steps listed below.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
CAUTION: Before adding the optional module, make sure to disconnect all power sources connected to the Switch. Failure to do so may result in an electrical shock, which may cause damage, not only to the individual but to the Switch as well.
At the back of the Switch to the left is the slot for the optional module, as shown in Figure 2-4 and Figure 2-5. This slot should be covered with a faceplate that can be easily removed by loosening the screws and pulling off the plate.
Optional Module Slot
Figure 2- 4. Optional Module slot at the rear of the DXS-3350SR
Optional Module Slot
Figure 2- 5. Optional Module slot at the rear of the DXS-3326GSR
After removing the faceplate, remove the DEM-420X or DEM-420CX4 optional module from its box. The front panel should resemble the drawing represented here.
Figure 2- 6. Front Panel of the DEM-420X
Figure 2- 7. Front Panel of the DEM-420CX
Take the module and gently slide it in to the available slot at the rear of the Switch until it reaches the back, as shown in the following figure. At the back of the slot are two sets of plugs that must be connected to the module. Gently, but firmly push in on the module to secure it to the Switch. The module should fit snugly into the corresponding receptors.
Figure 2- 8. Inserting the optional module into the Switch.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Now tighten the two screws at adjacent ends of the module into the available screw holes on the Switch. The upgraded DXS-3350SR/DXS-3326GSR is now ready for use.
Figure 2- 9. DXS-3350SR with optional module installed.

The Media Accessory

At the rear of the DGS-3324SRi is an open slot for a CompactFlash card. This 32MB PCMCIA flash card provides high capacity solid-state flash memory for storing information for and from the Switch, such as firmware, configuration files and even save log information kept on the Switch. It also supports True IDE Mode that is electrically compatible with an IDE disk drive. It is recommended that the user store a backup of the startup configuration file on the CompactFlash card of the control module and on a central server. When saving the startup configuration file, the Switch stores it in two places: in the CompactFlash and the PC card of the primary control module. When the Switch boots, it will try to use the primary configuration file on the PC card and, if for some reason the Switch cannot use the file, it automatically uses the secondary configuration file on the CompactFlash. If the startup file becomes corrupted in both places, the DGS-3324SRi will use its default configuration.
To install the CompactFlash card, insert it into the available slot on the back of the Switch, as shown below, and ensure that the card “clicks” into place. When correctly inserted, the CF Card Button should protrude. To eject the card from the slot, press the CF Card button in and the CompactFlash card should pop out.
Figure 2- 10. CF Card Installation
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual

External Redundant Power System

The Switch supports an external redundant power system.
Figure 2- 11. The DGS-3324SRi with the DPS-500 Redundant External Power Supply
Figure 2- 12. The DGS-3324SRi with the DPS-900 chassis RPS
NOTE: See the DPS-500 documentation for more information.
CAUTION: Do not use the Switch with any redundant power system other
than the DPS-500.
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xStack DGS/DXS-3300 Series Layer 3 Stackable Gigabit Ethernet Switch User Manual
Connecting the Switch

Switch To End Node

Switch to Hub or Switch

Connecting To Network Backbone or Server

Stacking and the xStack DGS/DXS-3300 Series

NOTE: All high-performance N-Way Ethernet ports can support both MDI­II and MDI-X connections.

Switch to End Node

Section 3
End nodes include PCs outfitted with a 10, 100 or 1000 Mbps RJ 45 Ethernet Network Interface Card (NIC) and most routers.
An end node can be connected to the Switch via a twisted-pair UTP/STP cable. The end node should be connected to any of the 1000BASE-T ports of the Switch.
Figure 3- 1. Switch connected to an end node
The Link/Act LEDs for each UTP port will light green or amber when the link is valid. A blinking LED indicates packet activity on that port.
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