D-Link DES-6000 Series User manual

DES-6000
Modular Ethernet Switch
User’s Guide
Second Edition (April 2001)
6DES6000..02
Printed In Taiwan
RECYCLABLE

TABLE OF CONTENTS
ABOUT THIS GUIDE................................................................................................................................................................V
CONVENTIONS ............................................................................................................................................................................ V
OVERVIEW OF THIS USER’S GUIDE.............................................................................................................................................. V
INTRODUCTION........................................................................................................................................................................1
FAST ETHERNET TECHNOLOGY....................................................................................................................................................1
GIGABIT ETHERNET TECHNOLOGY ..............................................................................................................................................1
SWITCHING TECHNOLOGY ...........................................................................................................................................................2
FEATURES ....................................................................................................................................................................................2
Chassis.....................................................................................................................................................................................2
Modules....................................................................................................................................................................................3
CPU Module .............................................................................................................................................................................................3
10BASE-T/100BASE-TX Module............................................................................................................................................................3
100BASE-FX (MT-RJ) Module................................................................................................................................................................4
1000BASE-T (RJ-45) Module ..................................................................................................................................................................4
1000BASE-SX (SC) Module ....................................................................................................................................................................4
1000BASE-LX (SC) Module ....................................................................................................................................................................4
Power Supply Modules .............................................................................................................................................................................4
UNPACKING AND SETUP........................................................................................................................................................6
UNPACKING .................................................................................................................................................................................6
SETUP ..........................................................................................................................................................................................6
DESKTOP OR SHELF INSTALLATION .............................................................................................................................................7
RACK INSTALLATION ...................................................................................................................................................................7
INSTALLING MODULES.................................................................................................................................................................8
CONNECTING A TERMINAL...........................................................................................................................................................9
POWER ON....................................................................................................................................................................................9
Power Failure........................................................................................................................................................................10
IDENTIFYING EXTERNAL COMPONENTS ......................................................................................................................11
FRONT PANEL ............................................................................................................................................................................11
SIDE PANELS..............................................................................................................................................................................11
OPTIONAL PLUG-IN MODULES ...................................................................................................................................................12
10BASE-T/100BASE-TX Module...........................................................................................................................................12
100BASE-FX (MT-RJ) Module ..............................................................................................................................................12
1000BASE-T (RJ-45) Module ................................................................................................................................................13
1000BASE-SX (MT-RJ) Gigabit Module ...............................................................................................................................13
1000BASE-SX (SC) Gigabit Module......................................................................................................................................14
1000BASE-LX (SC) Gigabit Module .....................................................................................................................................14
Power Supply Modules ..........................................................................................................................................................15
LED INDICATORS ......................................................................................................................................................................15
CONNECTING THE SWITCH ...............................................................................................................................................16
SWITCH TO END NODE ...............................................................................................................................................................16
SWITCH TO HUB OR SWITCH ......................................................................................................................................................16
10BASE-T Device ..................................................................................................................................................................17
100BASE-TX Device ..............................................................................................................................................................17
1000BASE-T Device ..............................................................................................................................................................17
CABLE LENGTHS ........................................................................................................................................................................18
SWITCH MANAGEMENT CONCEPTS................................................................................................................................19

LOCAL CONSOLE MANAGEMENT ...............................................................................................................................................19
Diagnostic (Console) Port (RS-232 DCE).............................................................................................................................19
IP ADDRESSES AND SNMP COMMUNITY NAMES ......................................................................................................................20
TRAPS ........................................................................................................................................................................................20
MIBS.........................................................................................................................................................................................21
PACKET FORWARDING ...............................................................................................................................................................22
Aging Time.............................................................................................................................................................................22
Filtering Database.................................................................................................................................................................22
SPANNING TREE ALGORITHM ....................................................................................................................................................22
STA Operation Levels ............................................................................................................................................................23
On the Bridge Level................................................................................................................................................................................23
On the Port Level ....................................................................................................................................................................................23
User-Changeable STA Parameters........................................................................................................................................24
Illustration of STA..................................................................................................................................................................24
PORT TRUNKING ........................................................................................................................................................................26
VLANS & BROADCAST DOMAINS .............................................................................................................................................26
MAC-based Broadcast Domains ...........................................................................................................................................27
802.1Q VLANs .......................................................................................................................................................................27
802.1Q VLAN Segmentation..................................................................................................................................................................27
Sharing Resources Across 802.1Q VLANs.............................................................................................................................................28
802.1Q VLANs Spanning Multiple Switches .........................................................................................................................................28
Port-based VLANs .................................................................................................................................................................30
BROADCAST STORMS.................................................................................................................................................................31
Segmenting Broadcast Domains............................................................................................................................................31
Eliminating Broadcast Storms ...............................................................................................................................................31
USING THE CONSOLE INTERFACE...................................................................................................................................32
SETTING UP A CONSOLE............................................................................................................................................................32
CONNECTING TO THE SWITCH USING TELNET............................................................................................................................33
CONSOLE USAGE CONVENTIONS................................................................................................................................................33
FIRST TIME CONNECTING TO THE SWITCH.......................................................................................33
User Accounts Management ..................................................................................................................................................34
Save Changes.........................................................................................................................................................................35
LOGIN ON THE SWITCH CONSOLE BY REGISTERED USERS ........................................................................................................36
Create/Modify User Accounts.................................................................................................................................................................36
User Accounts Control Table..................................................................................................................................................................37
SETTING UP THE SWITCH...........................................................................................................................................................38
System Configuration.............................................................................................................................................................38
Configure IP Address..............................................................................................................................................................................39
Configure Console ..................................................................................................................................................................................40
Configure Switch Modules......................................................................................................................................................................40
Configure Ports .......................................................................................................................................................................................42
Configure Trunk Groups .........................................................................................................................................................................44
Configure Port Mirroring ........................................................................................................................................................................45
Configure Spanning Tree Protocol..........................................................................................................................................................46
Configure Filtering and Forwarding Table..............................................................................................................................................49
Configure VLANs & MAC-based Broadcast Domains ..........................................................................................................................55
Update Firmware and Configuration Files ...........................................................................................................................65
System Utilities ......................................................................................................................................................................66
Ping Test .................................................................................................................................................................................................66
Save Settings to TFTP Server .................................................................................................................................................................67
Save Switch History to TFTP Server ......................................................................................................................................................68
Clear Address Table................................................................................................................................................................................68
Management WEB..................................................................................................................................................................................68
Community Strings and Trap Stations ...................................................................................................................................68
SWITCH MONITORING ................................................................................................................................................................69
Network Monitoring and Device Information........................................................................................................................69
Traffic Statistics ......................................................................................................................................................................................70
Browse Address Table ............................................................................................................................................................................74
Switch History ........................................................................................................................................................................................74

Device Status ..........................................................................................................................................................................................75
Browse GVRP Status ..............................................................................................................................................................................75
Browse GMRP Status .............................................................................................................................................................................76
IP Multicast and IGMP Information .......................................................................................................................................................76
RESETTING THE SWITCH ............................................................................................................................................................77
Factory Reset .........................................................................................................................................................................78
Logout....................................................................................................................................................................................78
WEB-BASED NETWORK MANAGEMENT ........................................................................................................................79
INTRODUCTION ..........................................................................................................................................................................79
GETTING STARTED.....................................................................................................................................................................79
MANAGEMENT ...........................................................................................................................................................................79
Configuration.........................................................................................................................................................................80
IP Address...............................................................................................................................................................................................81
Switch Module ........................................................................................................................................................................................81
Advanced Settings...................................................................................................................................................................................83
Port Configuration...................................................................................................................................................................................84
Trunk Groups ..........................................................................................................................................................................................85
Port Mirroring .........................................................................................................................................................................................86
Spanning Tree Protocol...........................................................................................................................................................................86
Forwarding and Filtering.........................................................................................................................................................................88
IGMP ......................................................................................................................................................................................................92
VLANs & MAC-based Broadcast Domains ...........................................................................................................................................96
Management ........................................................................................................................................................................104
Community Strings and Trap Receivers ...............................................................................................................................................105
User Accounts Management .................................................................................................................................................................105
Console .................................................................................................................................................................................................106
Monitoring ...........................................................................................................................................................................107
Switch Overview...................................................................................................................................................................................108
Port Utilization......................................................................................................................................................................................109
Port Traffic Statistics ............................................................................................................................................................................109
Port Error Packet Statistics....................................................................................................................................................................110
Port Packet Analysis .............................................................................................................................................................................111
Browse Address Table ..........................................................................................................................................................................113
IP Multicast & IGMP Information ........................................................................................................................................................113
Browse GVRP Status ............................................................................................................................................................................114
Browse GMRP Status ...........................................................................................................................................................................114
Switch History ......................................................................................................................................................................................114
Device Status ........................................................................................................................................................................................115
Maintenance ........................................................................................................................................................................115
Firmware and Configuration Update.....................................................................................................................................................116
Save Settings to TFTP Server ...............................................................................................................................................................117
Save Switch History to TFTP Server ....................................................................................................................................................117
Clear Address Table..............................................................................................................................................................................118
Save Changes ........................................................................................................................................................................................118
Factory Reset ........................................................................................................................................................................................119
Restart System ......................................................................................................................................................................................119
TECHNICAL SPECIFICATIONS.........................................................................................................................................120
RJ-45 PIN SPECIFICATION.................................................................................................................................................122
SAMPLE CONFIGURATION FILE .....................................................................................................................................124
Commands: ...........................................................................................................................................................................................124
Notes about the Configuration File: ......................................................................................................................................................124
RUNTIME SOFTWARE DEFAULT SETTINGS................................................................................................................126
INDEX.......................................................................................................................................................................................127
TECHNICAL SUPPORT.........................................................................................................................................................128
WARRANTY..............................................................................................................................................................................129
REGISTRATION.......................................................................................................................................................................131

DES-6000 Modular Ethernet Switch User’s Guide
About This Guide v
ABOUT THIS GUIDE
This User’s Guide tells you how to install your Modular Ethernet Switch, how to connect it to your Ethernet
network, and how to set its configuration using either the built-in console interface or Web-based
management.
Conventions
References in this manual to the DES-6000 are frequently written simply as “Switch” or “Switches” where the
text applies to both models. Model numbers are normally used only to differentiate between specific Switches
where necessary.
Unless differentiated by model number, all information applies to both models.
Overview of this User’s Guide
♦ Chapter 1, “Introduction.” Describes the Switch and its features.
♦ Chapter 2, “Unpacking and Setup.” Helps you get started with the basic installation of the Switch.
♦ Chapter 3, “Identifying External Components.” Describes the front panel, side panels, optional plug-in
modules, and LED indicators of the Switch.
♦ Chapter 4, “Connecting the Switch.” Tells how you can connect the Switch to your Ethernet network as
well as providing an informational cable length table.
♦ Chapter 5, “Switch Management Concepts.” Talks about Local Console Management via the RS-232
DCE console port and other aspects about how to manage the Switch.
♦ Chapter 6, “Using the Console Interface.” Tells how to use the built-in console interface to change, set,
and monitor Switch performance and security.
♦ Chapter 7, “Web-Based Network Management.” Tells how to manage the Switch through an Internet
browser.
♦ Appendix A, “Technical Specifications.” Lists the technical specifications of the Switch.
♦ Appendix B, “RJ-45 Pin Specifications.” Shows the details and pin assignments for the RJ-45
receptacle/connector.
♦ Appendix C, “Sample Configuration File.”
♦ Appendix D, “Runtime Software Default Settings.”

Modular Ethernet Switch User’s Guide
Introduction 1
1
INTRODUCTION
This section describes the features of the Switch, as well as giving some background information about
Ethernet/Fast Ethernet, Gigabit Ethernet, and switching technology.
Fast Ethernet Technology
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 the current 10BASE-T technology. The dominating market
position virtually guarantees cost effective and high performance Fast Ethernet solutions in the years to
come.
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 is essential to coping with the network
bottlenecks that frequently develop as computers and their busses get faster and more users use applications
that generate more traffic. Upgrading key components, such as your backbone and servers to Gigabit
Ethernet can greatly improve network response times as well as significantly speed up the traffic between
your subnets.
Gigabit Ethernet enables fast optical fiber connections to support video conferencing, complex imaging, and
similar data-intensive applications. Likewise, since data transfers occur 10 times faster than Fast Ethernet,
servers outfitted with Gigabit Ethernet NIC’s are able to perform 10 times the number of operations in the
same amount of time.
In addition, the phenomenal bandwidth delivered by Gigabit Ethernet is the most cost-effective method to
take advantage of today and tomorrow’s rapidly improving switching and routing internetworking
technologies. And with expected advances in the coming years in silicon technology and digital signal
processing that will enable Gigabit Ethernet to eventually operate over unshielded twisted-pair (UTP)

Modular Ethernet Switch User’s Guide
2 Introduction
cabling, outfitting your network with a powerful 1000Mbps-capable backbone/server connection creates a
flexible foundation for the next generation of network technology products.
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, Fast Ethernet, or Gigabit 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 for a local area
network to be divided into different segments which don’t compete with each other for network transmission
capacity, giving a decreased load on each.
The switch acts as a high-speed selective bridge between the individual segments. Traffic that needs to go
from one segment to another (from one port to another) is automatically forwarded by the switch, 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 your 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.
Features
The DES-6000 Modular switch is designed for easy installation and high performance in an environment
where traffic on the network and the number of users increases continuously.
Switch features include:
Chassis
The chassis is the main unit that modules and power supplies are installed into. A CPU module and a power
supply module come preinstalled in the chassis.
Chassis features include:
♦ Eight slots for installing networking modules (plus one slot reserved for the CPU)
♦ Two slots for installing redundant power supply modules
♦ 21.3 Gigabit/sec. (Gbps) backplane switching fabric
♦ Hot-swappable design for power supply modules
♦ Networking modules warm-swappable (except CPU module)

Modular Ethernet Switch User’s Guide
Introduction 3
♦ Ears and screws for rack mounting
Modules
The following describes the optional plug-in modules available for the switch.
CPU Module
♦ A single CPU module must be present and must be installed in first (uppermost) slot.
♦ Layer 2 switching based on MAC address & VLAN ID.
♦ Store and Forward packet switching.
♦ Broadcast Storm rate filtering.
♦ Supports static filtering (based on MAC address).
♦ Supports IEEE 802.1Q VLAN (Static VLAN).
♦ Proprietary simplified Port-based VLANs
♦ IEEE 802.1d Spanning Tree support.
♦ Address table: 12K MAC address per switch
♦ 96 Static VLAN Entries (in IEEE 802.1Q VLANs mode)
♦ Supports 802.1p priority queuing (2 priority queues)
♦ Port Aggregation (Port-Trunking) Capability
♦ Port Mirroring
♦ IGMP snooping
♦ Head Of Line (HOL) Blocking Prevention
♦ RS-232 port for out-of-band management and system configuration
♦ Telnet Remote Configuration
♦ TFTP software upgrades, settings file and switch log uploads
♦ Web-based management
♦ SNMP Agents:
♦ MIB-II (RFC 1213)
♦ RMON MIB (RFC 1757)
♦ Bridge MIB (RFC 1493)
♦ SLIP
♦ Supports four RMON (1,2,3,9) groups
♦ Port Security
♦ BootP support
♦ Support for DHCP Client
10BASE-T/100BASE-TX Module
♦ 16 10BASE-T/100BASE-TX ports
♦ Fully compliant with IEEE 802.3 10BASE-T, IEEE 802.3u
100BASE-TX
♦ All 10/100Mbps ports support NWay auto-negotiation
♦ Back pressure Flow Control support for Half-duplex mode

Modular Ethernet Switch User’s Guide
4 Introduction
♦ IEEE 802.3x-compliant Flow Control support for Full-duplex
♦ Per port packet buffer: 0.5 Mbytes
100BASE-FX (MT-RJ) Module
♦ 12 100BASE-FX (MT-RJ) Fast Ethernet ports
♦ Fully compliant with IEEE 802.3u 100BASE-FX
♦ Back pressure Flow Control support for Half-duplex mode
♦ IEEE 802.3x compliant Flow Control support for Full-duplex
♦ Per port packet buffer: 0.5 Mbytes
1000BASE-T (RJ-45) Module
♦ 2-port, front-panel module
♦ Store and forward packet switching
♦ Connects to 1000BASE-T devices only at full-duplex and auto-negotiating.
♦ 2 1000BASE-T (RJ-45) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3ab
♦ Fully compliant with IEEE 802.1Q/P
♦ Back pressure Flow Control support for Half-duplex mode
♦ IEEE 802.3x compliant Flow Control support for Full-duplex
1000BASE-SX (SC) Module
♦ 2 1000BASE-SX (SC) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3z
♦ Support Full-duplex operation only
♦ IEEE 802.3x-compliant Flow Control support
♦ Per port packet buffer: 2 Mbytes
1000BASE-LX (SC) Module
♦ 2 1000BASE-LX (SC) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3z
♦ Support Full-duplex operation only
♦ IEEE 802.3x-compliant Flow Control support
♦ Per port packet buffer: 2 Mbytes
Power Supply Modules
♦ Dual power modules design
♦ Current sharing design
♦ Full redundant feature design to ensure continuous operation
♦ If one power module fails, the other will take over all current supply automatically.
♦ Hot-swappable/Hot-pluggable
♦ Power management functions enabled
♦ Revolving handle design

Modular Ethernet Switch User’s Guide
Introduction 5
♦ Input: 90 ~ 264 VAC, 47 ~ 63Hz
♦ Output: 3.3V: 4A ~ 60A
♦ 12V: 0.1A ~ 2A

Modular Ethernet Switch User’s Guide
6 Unpacking and Setup
2
UNPACKING AND SETUP
This chapter provides unpacking and setup information for the Switch.
Unpacking
Open the shipping carton of the Switch and carefully unpack its contents. The carton should contain the
following items:
♦ One switch chassis
♦ One management module (pre-installed in uppermost slot)
♦ One power supply module (pre-installed)
♦ One mounting kit: four mounting brackets and screws
♦ Four rubber feet with adhesive backing
♦ One AC power cord
♦ One console cable
♦ One printed copy of the quickstart guide
♦ One printed copy of this user’s guide
♦ One CD-ROM containing this user’s guide
If any item is found missing or damaged, please contact your local reseller for replacement.
Setup
The setup of the Switch can be performed using the following steps:
♦ The surface must support at least 5 kg.
♦ The power outlet should be within 1.82 meters (6 feet) of the device.
♦ Visually inspect the power cord and see that it is secured fully to the AC power connector.
♦ Make sure that there is proper heat dissipation from and adequate ventilation around the Switch. Do
not place heavy objects on the Switch.

Modular Ethernet Switch User’s Guide
Unpacking and Setup 7
Desktop or Shelf Installation
When installing the Switch on a desktop or shelf, the rubber feet included with the device must be first
attached. Attach these cushioning feet on the bottom at each corner of the device. Allow enough ventilation
space between the device and the objects around it.
Figure 2-1. Switch installed on a Desktop or Shelf
Rack Installation
The Switch can be mounted in an EIA standard size, 19-inch rack, which can be placed in a wiring closet with
other equipment. To install, attach the mounting brackets on the Switch’s front panel (one on each side) and
secure them with the screws provided.
Figure 2-2. Attaching the mounting brackets to the Switch
Then, use the screws provided with the equipment rack to mount the Switch in the rack.

Modular Ethernet Switch User’s Guide
8 Unpacking and Setup
Installing Modules
The DES-6000 supports up to 9 modules which can be installed into the module bays. Networking modules
are warm-swappable, meaning they can be added and removed while power to the switch is ON. After warm-
swapping a networking module, the switch will automatically be rebooted. Make sure to use the Save
Changes command to save the current configuration to NV-RAM before warm-swapping modules. The CPU
module, however, is NOT hot-swappable. Removing or inserting the CPU module while the power is on may
cause irreparable damage to the module and/or to the Switch itself. Further, make sure you have unplugged
the power cord from the removable power supply module before inserting or removing it from the Switch.
CAUTION: Due to the high energy present in this system, extreme caution should be
exercised whenever adding or removing system components. No element of this system
may be installed or removed except by an authorized technician.
Figure 2-3. Removing a Blank Slot Cover
Modules can be installed into any free slot, except the CPU module which must be installed in the uppermost
(top) slot. To install a module, simply remove a blank slot cover and slide the module along the guide rails
until it snaps firmly in place.

Modular Ethernet Switch User’s Guide
Unpacking and Setup 9
Figure 2–4. Installing a Module
Connecting a Terminal
The DES-6000 can perform basic switching functions without special configuration, but to use the Switch’s
advanced features you must first configure the unit through a terminal (a VT-100 serial data terminal or a
computer running a VT-100 emulator). The connection is made through the Switch’s Diagnostic RS-232 port,
which is configured at the factory as follows:
♦ Baud Rate: 9600
♦ Data Bits: 8
♦ Parity: none
♦ Stop Bits: 1
♦ Flow Control: None
The RS-232 port has a nine-socket D-shell connector with IBM-type DCE wiring, and can be connected to the
terminal using an off-the-shelf RS-232 cable with the proper connectors for the terminal and the DES-6000.
Power on
Power up the DES-6000 as follows:
1. Make sure the power module is properly installed in the device.
2. Plug the device end of the supplied power cord firmly into the power inlet on the DES-6000’s front
panel of the redundant power supply.
3. Plug the outlet end of the power cord firmly into a suitable AC outlet.
4. Observe the DES-6000’s LED indicators to make sure the Switch is operating correctly.
The DES-6000’s LED indicators operate as follows during a normal power-up:

Modular Ethernet Switch User’s Guide
10 Unpacking and Setup
♦ All indicators blink momentarily to indicate a system reset.
♦ The Power indicator flashes for about 20 seconds while the switch prepares its run-time software and
performs a self-test.
♦ The Power indicator begins shining steadily, and the remaining indicators begin reflecting port and
system status.
Power Failure
As a precaution, the Switch should be unplugged in case of an impending power failure. When power is
resumed, plug the Switch back in.

Modular Ethernet Switch User’s Guide
Identifying External Components 11
3
IDENTIFYING EXTERNAL COMPONENTS
This chapter describes the front panel, side panels, optional plug-in modules, and LED indicators of the
Switch
Front Panel
The front panel of the Switch consists nine slide-in module slots for networking modules, two slide-in module
slots for power supply modules, an RS-232 communication port, and LED indicators.
Figure 3-1. Front panel view of the Switch
♦ Comprehensive LED indicators display the conditions of the Switch and status of the network. A
description of these LED indicators follows (see LED Indicators).
♦ An RS-232 DCE console port is used to diagnose the Switch via a connection to a terminal (or PC) and
Local Console Management.
♦ Nine slide-in module slots installing networking modules and the CPU module.
♦ Two slide-in module slots for installing power supply modules.
Side Panels
The left side panel of the Switch contains four system fans. The right side panel contains 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 adequate 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.

Modular Ethernet Switch User’s Guide
12 Identifying External Components
Optional Plug-in Modules
The DES-6000 Modular Ethernet Switch is able to accommodate a range of plug-in modules in order to
increase functionality and performance.
10BASE-T/100BASE-TX Module
Figure 3-2. 16-port, 10/100BASE-TX module
♦ 16-port, front-panel module.
♦ Connects to 10BASE-T and 100BASE-TX devices at full- or half-duplex.
♦ Supports Category 3, 4, 5 or better UTP or STP connections of up to 100 meters each.
100BASE-FX (MT-RJ) Module
Figure 3-3. 12-port, 100BASE-FX (MT-RJ) module
♦ 12-port, front-panel module.
♦ Connects to 100BASE-FX devices at full- or half-duplex.
♦ 12 100BASE-FX (MT-RJ) Fast Ethernet ports

Modular Ethernet Switch User’s Guide
Identifying External Components 13
♦ Fully compliant with IEEE 802.3u 100BASE-FX
♦ Back pressure Flow Control support for Half-duplex mode
♦ IEEE 802.3x compliant Flow Control support for Full duplex
♦ Per port packet buffer: 0.5 Mbytes
♦ Supports multi-mode fiber-optic cable connections of up to 412 meters in half-duplex or 2 km in full-duplex
mode.
1000BASE-T (RJ-45) Module
Figure 3-4. 2-port, 1000BASE-T (RJ-45) module
♦ 2-port, front-panel module
♦ Store and forward packet switching
♦ Connects to 1000BASE-T devices only at full-duplex and auto-negotiating.
♦ 2 1000BASE-T (RJ-45) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3ab
♦ Fully compliant with IEEE 802.1Q/P
♦ Back pressure Flow Control support for Half-duplex mode
♦ IEEE 802.3x compliant Flow Control support for Full-duplex
1000BASE-SX (MT-RJ) Gigabit Module
Figure 3-5. Two-port, 1000BASE-SX (MT-RJ) module
♦ Two-port, front panel module.
♦ Connects to a 1000BASE-SX device at full duplex.

Modular Ethernet Switch User’s Guide
14 Identifying External Components
♦ 2 1000BASE-SX (MT-RJ) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3z
♦ Supports Full-duplex operation only
♦ IEEE 802.3x-compliant Flow Control support
♦ Per port packet buffer: 2 Mbytes
1000BASE-SX (SC) Gigabit Module
Figure 3-6. Two-port, 1000BASE-SX gigabit module
♦ Two-port, front-panel module.
♦ Connects to 1000BASE-SX devices at full duplex.
♦ 2 1000BASE-SX (SC) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3z
♦ Support Full-duplex operation only
♦ IEEE 802.3x-compliant Flow Control support
♦ Per port packet buffer: 2 Mbytes
1000BASE-LX (SC) Gigabit Module
Figure 3-7. Two-port, 1000BASE-LX gigabit module
♦ Two-port, front-panel module.
♦ Connects to 1000BASE-LX devices at full duplex.
♦ 2 1000BASE-LX (SC) Gigabit Ethernet ports
♦ Fully compliant with IEEE 802.3z
♦ Supports full-duplex operation only
♦ IEEE 802.3x-compliant Flow Control support
♦ Per port packet buffer: 2 Mbytes

Modular Ethernet Switch User’s Guide
Identifying External Components 15
Power Supply Modules
♦ Dual power modules design with current sharing design
♦ Full redundant feature design to ensure continuous operation
♦ If one power module failed, the other will take over all current supply automatically.
♦ Hot-swappable/Hot-pluggable capability
♦ Power management functions
♦ Input: 90 ~ 264 VAC, 47 ~ 63Hz
♦ Output: 3.3V: 4A ~ 60A
♦ 12V: 0.1A ~ 2A
LED Indicators
The LED indicators of the Switch include CPU Status, Console, Power OK, and Utilization. The following
shows the LED indicators for the Switch along with an explanation of each indicator.
Figure 3-8. The Switch LED indicators
♦ CPU Status This leftmost indicator on the front panel displays the current status of the switch. The
LED will blink while the Power-On Self-Test (POST) is running during startup. It will light a steady
green after the POST test to indicate the switch is powered on and operating properly. It will light
amber when an error occurs during startup and the switch is therefore not functioning.
♦ Console This indicator is lit green when the switch is being managed through the embedded console
management program. The console program is accessed either through the out-of-band RS-232 console
port using a straight-through serial cable or in-band via Telnet. When a secured connection is
established, this LED is lit. The indicator blinks when the console RS-232 is accessed.
♦ Power OK This indicator lights green when the CPU module of the switch is receiving power and
functioning properly.
♦ Utilization These indicators display the percentage of utilization on the CPU in the switch.