Atlantis Land A02-F16(24)/M2 User manual

16(24)-Port 10/100Mbps
Fast Ethernet Switch Layer 2
(Rackmount)
User’s Guide

The Atlantis Land logo is a registered trademark of Atlantis Land
SpA. All other names mentioned mat be trademarks or registered
trademarks of their respective owners. Subject to change without
notice. No liability for technical errors and/or omissions.
FCC Warning
This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with this
user’s guide, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is
likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
CE Mark Warning
This is a Class B product. In a domestic environment, this product
may cause radio interference in which case the user may be required
to take adequate measures.
A02-F16(24)/M2 (January2003)

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TABLE OF CONTENTS
About This Guide ................................................. 1
PURPOSE ......................................................................................... 1
TERMS/USAGE ................................................................................ 1
OVERVIEW OF THIS USER’S GUIDE................................................ 1
Introduction .......................................................... 2
FAST ETHERNET TECHNOLOGY .................................................... 2
SWITCHING TECHNOLOGY............................................................. 3
FEATURES ....................................................................................... 4
Unpacking and Installation................................... 6
UNPACKING .................................................................................... 6
INSTALLATION................................................................................ 6
RACK MOUNTING ........................................................................... 7
Identifying External Components......................... 9
FRONT PANEL ................................................................................. 9
REAR PANEL ................................................................................. 10
Technical Specification....................................... 12

1
ABOUT THIS GUIDE
Congratulations on your purchase of the 16(24)-port 10/100Mbps
Auto-negotiation Fast Ethernet Switch. This device integrates
100Mbps Fast Ethernet and 10Mbps Ethernet network capabilities in a
highly flexible package.
Purpose
This guide discusses how to install your 16(24)-port 10/100Mbps Fast
Ethernet Switch.
Terms/Usage
In this guide, the term “Switch” (first letter upper case) refers to your
16(24)-port 10/100Mbps Fast Ethernet Switch, and ”switch” (first
letter lower case) refers to other Ethernet switches.
Overview of this User’s Guide
Introduction. Describes the Switch and its features.
Unpacking and Installation.Helps you get started with the basic
installation of the Switch.
Identifying External Components. Describes the front panel, rear
panel and LED indicators of the Switch.
Technical Specifications. Lists the technical (general, physical and
environmental, and performance) specifications of the Switch.

2
INTRODUCTION
This chapter describes the features of the Switch 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.

3
Switching Technology
Another approach to pushing beyond the limits of Ethernet technology
is the development of switching technology. A switch bridge 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 switch acts as a high-speed selective bridge between the
individual segments. The switch, 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 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, 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 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

4
solution to most kinds of local area network congestion problems.
Features
The Switch were designed for easy installation and high performance
in an environment where traffic on the network and the number of
user increase continuously.
The Switch with its rack size is specifically designed for middle to
large workgroups. The Switch provides immediate access to a rapidly
growing network through a wide range of user-reliable functions.
The Switch 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 Switch is expandable by cascading two or more switches
together. As all ports support 200Mbps, the Switch can be cascaded
from any port and to any number of switches.
The Switch is a perfect choice for site planning to upgrade to Fast
Ethernet in the future. Ethernet workgroups can connect to the
Switch now, and change adapters and hubs anytime later without
needing to change the Switch or reconfigure the network.
The Switch combine 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.

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The Switch is an unmanaged 10/100 Fast Ethernet Switch that offers
solutions in accelerating small Ethernet workgroup bandwidth. Other
key features are:
 16(24)-port 10/100BASE Ethernet Switch with RJ-45
connectors
 Support Auto-negotiation for speed and duplex modes for each
port
 Supports Auto-MDI/MDI-X for each port
 Wire speed reception and transmission
 Store-and-Forward switching method
 Integrated address Look-Up Engine, supports 8K absolute MAC
addresses
 Supports 512(2500)Kbytes RAM for data buffering
 Front-panel diagnostic LEDs
 Broadcast storm protection
 IEEE 802.3x flow control for full-duplex
 Back pressure flow control for half-duplex
 Standard 19” Rack-mountable size

6
UNPACKING AND INSTALLATION
This chapter provides unpacking and setup information for
the Switch.
Unpacking
Open the shipping cartons of the Switch and carefully unpacks its
contents. The carton should contain the following items:
 One the 16(24)-port 10/100Mbps Fast Ethernet Switch
 One AC power cord, suitable for your area’s electrical power
connections
 Four rubber feet to be used for shock cushioning
 Screws and two mounting brackets
 This User’s Guide (on CDRom or Floppy)
If any item is found missing or damaged, please contact your local
reseller for replacement.
Installation
The site where you install the Switch stack may greatly affect its
performance. When installing, consider the following pointers:
Install the Switch in a fairly cool and dry place. See Specifications
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.
Leave at least 10cm of space at the front and rear of the hub for
ventilation.

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Install the Switch on a sturdy, level surface that can support its weight,
or in an EIA standard-size equipment rack. For information on rack
installation, see the next section, Rack Mounting.
When installing the Switch on a level surface, attach the rubber feet to
the bottom of each device. The rubber feet cushion the hub and
protect the hub case from scratching.
Rack Mounting
The switch can be mounted in an EIA standard-size, 19-inch rack,
which can be placed in a wiring closet with other equipment. Attach
the mounting brackets at the switch’s front panel (one on each side),
and secure them with the provided screws.
16-Port10/100MbpsEthernetSwitch
SYST
EM
FDX
POWER
L
ink/ACT
FX
Then, use screws provided with the equipment rack to mount each
switch in the rack.