D-Link Dss 8 Manual

							 
 
 
 
DSS-8+ 
8-port 10/100Mbps Switch  
User’s Guide 
 
 
 
 
 
Rev. 03 (MAR. 2001) 
6012-9830016 
Printed In Taiwan 
 
RECYCLABLE 
						

							 
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TABLE OF CONTENTS 
ABOUT THIS GUIDE....................................................1 
P
URPOSE.........................................................................................1 
O
VERVIEW OF THIS USER’S GUIDE..........................................1 
INTRODUCTION..............................................................2 
F
AST ETHERNET TECHNOLOGY................................................2 
S
WITCHING TECHNOLOGY.........................................................2 
F
EATURES.......................................................................................4 
U
NPACKING....................................................................................6 
S
ETUP..............................................................................................6 
IDENTIFYING EXTERNAL 
COMPONENTS
....................................................................7 
FRONT PANEL.............................................................................7 
LED I
NDICATORS.........................................................................7 
REAR PANEL................................................................................8 
CONNECTING THE DSS-8+................................10 
PC 
TO DSS-8+............................................................................10 
H
UB TO DSS-8+..........................................................................10 
A. 10BASE-T Hub
...................................................................11 
B. 100BASE-TX Hub
.............................................................11 
H
UB WITHOUT UPLINK (MDI-II) PORT.................................11 
A. Using straight cable.............................................................11 
B. Using crossover cable.........................................................11  
						

							 
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DSS-8+ TO SWITCH (OTHER DEVICES)..................................11 
A. Using straight cable.............................................................12 
B. Using crossover cable.........................................................12 
P
ORT SPEED & DUPLEX MODE...............................................12 
INSTRUCTIONS FOR USE OF STACKING 
BRACKETS
............................................................................13 
RJ-45 PIN SPECIFICATION................................14 
TECHNICAL SPECIFICATIONS....................16 
  
						

							 
1 
ABOUT THIS GUIDE 
Congratulations on your purchase of the DSS-8+. This device 
integrates 100Mbps Fast Ethernet and 10Mbps Ethernet network 
capabilities in a highly flexible desktop package. 
Purpose 
The purpose of this manual is to show you how to install and 
configure your DSS-8+.  
Overview of this User’s Guide 
♦ Chapter 1, Introduction.  Describes the DSS-8+ and its features. 
♦ Chapter 2, Unpacking and Setup.  Helps you get started with the 
basic installation of the DSS-8+. 
♦ Chapter 3, Identifying External Components.  Describes the front 
panel, rear panel and LED indicators of the DSS-8+. 
♦ Chapter 4, Connecting the DSS-8+.  Tells how you can connect the 
DSS-8+ to your Ethernet network. 
♦ Appendix A, Technical Specifications. Lists the technical (general, 
physical and environmental, and performance) 
specifications of the DSS-8+. 
♦ Appendix B, RJ-45 Pin Specification.  Describes the RJ-45 
receptacle/connector and the straight and crossover 
cable connector.  
						

							 
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INTRODUCTION 
This chapter describes the features of the DSS-8+ and some 
background information about Ethernet/Fast Ethernet 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 
have been proposed to provide greater bandwidth and improve 
client/server response times.  Among them, 100BASE-T (Fast 
Ethernet) provides a non-disruptive, smooth evolution from the 
current 10BASE-T technology.  The non-disruptive and smooth 
evolution nature, and the dominating potential market base, virtually 
guarantee cost effective and high performance Fast Ethernet solutions 
in the years to come. 
100Mbps Fast Ethernet is a new 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 CSMA/CD Ethernet protocol.  Since the 100Mbps 
Fast Ethernet is compatible with all other 10Mbps Ethernet 
environments, it provides a straightforward upgrade and takes 
advantage of the existing investment in hardware, software, and 
personnel training. 
 
Switching Technology 
Another approach to pushing beyond the limits of Ethernet technology 
is the development of switching technology. A switch bridges 
  
						

							 
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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 dividing a local area 
network into different segments, which don’t compete with each other 
for network transmission capacity. 
The DSS-8+ acts as a high-speed selective bridge between the 
individual segments.  The DSS-8+, without interfering with any other 
segments, automatically forwards traffic that needs to go from one 
segment to another.  By doing this the total network capacity is 
multiplied, while still maintaining the same network cabling and 
adapter cards. 
For Fast Ethernet networks, a DSS-8+ is an effective way of 
eliminating problems of chaining hubs beyond the “two-repeater 
limit.” A DSS-8+ can be used to split parts of the network into 
different collision domains, making it possible to expand your Fast 
Ethernet network beyond the 205-meter network diameter limit for 
100BASE-TX networks.  DSS-8+s supporting both traditional 
10Mbps Ethernet and 100Mbps Fast Ethernet are also ideal for 
bridging between the existing 10Mbps networks and the 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, the setup and maintenance required 
make routers relatively impractical.  Today switches are an ideal 
solution to most kinds of local area network congestion problems. 
 
  
						

							 
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Features 
The DSS-8+ was designed for easy installation and high performance 
in an environment where traffic on the network and the number of 
users increase continuously. 
The DSS-8+ with its small, compact size was specifically designed for 
small to middle workgroups. The DSS-8+ can be installed where 
space is limited; moreover, the DSS-8+ provides immediate access to 
a rapidly growing network through a wide range of functions. 
The DSS-8+ is ideal for deployment with multiple high-speed servers 
for shared bandwidth 10Mbps or 100Mbps workgroups. With the 
highest bandwidth 200Mbps (100Mbps full-duplex mode), any port 
can provide workstations with a congestion-free data pipe for 
simultaneous access to the server. 
The DSS-8+ is expandable by cascading two or more DSS-8+s 
together.  As all ports support 200Mbps, the DSS-8+ can be cascaded 
from any port and to any number of DSS-8+s. 
The DSS-8+ is a perfect choice for sites planning to upgrade to Fast 
Ethernet in the future.  Ethernet workgroups can connect to the DSS-
8+ now, and you can change adapters and hubs anytime later without 
needing to change the DSS-8+s or reconfigure the network. 
The DSS-8+ combines dynamic memory allocation with store-and-
forward switching to ensure that the buffer is effectively allocated for 
each port, while controlling the data flow between the transmit and 
receive nodes to guarantee against all possible packet loss. 
The DSS-8+ is a managed 10/100 Fast Ethernet switch that offers 
solutions in accelerating small Ethernet workgroup bandwidth.  Other 
key features are: 

						

							 
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Unpacking and Setup 
This chapter provides unpacking and setup information for the 
DSS-8+. 
Unpacking 
Open the box and carefully unpacks its contents.  The box should 
contain the following items: 
♦ One DSS-8+ 
♦ One external power adapter 
♦ One pair of Stacking Brackets  
♦ This User’s Guide. 
If any item is found missing or damaged, please contact your local 
reseller for replacement. 
 
Setup 
The setup for the DSS-8+ can be performed using the following steps: 

						

							 
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IDENTIFYING EXTERNAL COMPONENTS 
This section identifies all the major external components of  the 
DSS-8+. Both the front and rear panels are shown followed by a 
description of each panel feature. The indicator panel is described 
in detail in the next chapter. 
 
Front Panel 
The figure below shows the front panel of the DSS-8+.  
 
♦ LED Indicator Panel 
  Refer to the LED Indicator section for detailed information about  
  each of the DSS-8+’s LED indicators. 
 
LED Indicators 
Power Indicator (PWR) 
This indicator lights green when the hub is receiving power, otherwise, 
it is off. 
Loop Detect (LOOP) 
When this indicator lights amber, it means that there is a loop detected, 
then the network needs to be re-configuration. 
Full-Duplex/Collision  (Full-Duplex/Collision) 
This LED indicator lights green when a respective port is in full