Airlink Switch UG ASW224 1103 User Manual

24-Port  
10/100Mbps  
Ethernet Switch  
User Guide  
UG-ASW224-1103  
 
24-Port 10/100Mbps Ethernet Switch User Guide  
required for safe operation of the equipment is not  
compromised.  
Mechanical Loading Mounting of the equipment in  
the rack should be such that a hazardous condition is  
not achieved due to uneven mechanical loading.  
Circuit Overloading Consideration should be given to  
the connection of the equipment to the supply circuit  
and the effect that overloading of circuits might have  
on over current protection and supply wiring.  
Appropriate consideration of equipment nameplate  
ratings should be used when addressing this concern.  
Reliable Earthing Reliable earthing of rack-mounted  
equipment should be maintained. Particular attention  
should be given to supply connections other than direct  
connections to the branch circuit (e.g., use of power  
strips).  
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24-Port 10/100Mbps Ethernet Switch User Guide  
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24-Port 10/100Mbps Ethernet Switch User Guide  
Table of Contents  
About this Guide ............................................. 6  
Purpose ...................................................................... 6  
Terms & Usage ........................................................... 6  
Overview of This User Guide .................................. 6  
Introduction ...................................................... 7  
Fast Ethernet Technology ......................................... 7  
Switching Technology .............................................. 8  
Features ...................................................................... 9  
Unpacking & Installation.............................. 10  
Unpacking ................................................................11  
Installation ................................................................11  
Rack Mounting ........................................................ 12  
External Components.................................... 13  
Front Panel ............................................................... 13  
LED Indicator Panel ............................................... 15  
Twisted Pair Ports ................................................... 15  
Rear Panel ................................................................ 16  
Technical Specifications ................................ 17  
Technical Support .......................................... 19  
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24-Port 10/100Mbps Ethernet Switch User Guide  
About This Guide  
Congratulations on your purchase of the 24-port 10/  
100Mbps 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 24-port  
10/100Mbps Ethernet Switch.  
Terms & Usage  
In this guide, the term “Switch” (first letter upper case)  
refers to your 24-port 10/100Mbps Ethernet Switch, and  
“switch” (first letter lower case) refers to other Ethernet  
switches.  
Overview of this User's Guide  
This User Guide contains the following sections  
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  
Switch’s front panel, rear panel, and LED indicators.  
Technical Specifications Lists the Switch’s technical  
(general, physical and environmental, and  
performance) specifications.  
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24-Port 10/100Mbps Ethernet Switch User Guide  
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 local area networks (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.  
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24-Port 10/100Mbps Ethernet Switch User Guide  
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 automatically forwards  
traffic from one segment to another without interfering  
with any other segments. This multiplies the total network  
capacity while 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 existing 10Mbps networks with the new 100Mbps  
networks.  
Switching LAN technology is a marked improvement over  
the previous generation of network bridges, which were  
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24-Port 10/100Mbps Ethernet Switch User Guide  
characterized by higher latencies. Routers are also used to  
segment LANs. However, since routers are expensive,  
difficult to setup, and require intensive maintenance, they  
are relatively impractical for the network. Switches, on the  
other hand, are less expensive, easier to set up, and  
practically maintenance free, which make them an ideal  
solution to today's LAN congestion problems.  
Features  
The Switch is 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 designed for middle- to  
large -sized 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 200 Mbps  
(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. Since 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  
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24-Port 10/100Mbps Ethernet Switch User Guide  
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.  
The Switch is an unmanaged 10/100 Fast Ethernet Switch  
that offers solutions in accelerating small Ethernet  
workgroup bandwidth. Other key features are:  
24-port 10/100Mbps 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 2.5-Mbits RAM for data buffering  
Front-panel diagnostic LEDs  
IEEE 802.3x flow control for full-duplex  
Back pressure flow control for half-duplex  
Standard 19" Rack-mountable size  
Unpacking & Installation  
This chapter provides unpacking and setup information for  
the Switch.  
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24-Port 10/100Mbps Ethernet Switch User Guide  
Unpacking  
Open the shipping cartons of the Switch and carefully  
unpacks its contents. The carton should contain the  
following items:  
One the 24-port 10/100Mbps Fast Ethernet Switch  
One AC power cord, suitable for your area's electrical  
power connections  
Four rubber feet for shock cushioning  
Screws and two mounting brackets  
This User Guide  
If any item is missing or damaged, contact your local  
reseller for replacement.  
Installation  
The site where you install the Switch stack may greatly  
affect its performance. Use the following guidelines when  
installing the Switch.  
Install the Switch in a 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 10 cm of space at the front and rear of the  
hub for ventilation.  
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 Rack Mounting section.  
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24-Port 10/100Mbps Ethernet Switch User Guide  
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 (see Figure 1).  
Figure 1. Attach Brackets to Switch  
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24-Port 10/100Mbps Ethernet Switch User Guide  
Then, use screws provided with the equipment rack to  
mount each switch in the rack (see Figure 2).  
Figure 2. Attach Switch to Rack  
External Components  
This section identifies all the major external components of  
the switch.  
Front Panel  
Figure 3 shows the front panels of the switch.  
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Prots  
LDEs  
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24-Port 10/100Mbps Ethernet Switch User Guide  
LED Indicator Panel  
Figure 4 shows the Switch’s LED panel.  
Figure 4. LED Panel  
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24  
ACT  
Power  
LINK  
100 Mbps  
The LED indicator panel contains the following indicators:  
Power (PWR) This indicator lights green when the  
switch is receiving power. Otherwise, it is off.  
Link/Activity (green) This indicator lights up green  
when the port is connected to a Fast Ethernet or  
Ethernet station. If this indicator is blinking green, the  
Switch is transmitting or receiving data.  
100 Mbps (green) This indicator lights up green when  
the port is connected to a 100-Mbps Fast Ethernet  
station. Otherwise, the LED is off when the port is  
connected to a 10-Mbps Ethernet station.  
Twisted-Pair Ports  
Twisted-pair ports support automatic MDI/MDIX crossover  
detection function gives true 'plug and play' capability  
without the need of confusing crossover cables or crossover  
ports.  
With the Auto-MDI function, you just need to plug-in the  
network cable to the hub directly and no need to care if the  
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24-Port 10/100Mbps Ethernet Switch User Guide  
end node is Network Interface Card (NIC) or switches and  
hubs.  
Rear Panel  
The AC power connector is located on the rear panel and is  
a three-pronged connector that supports the power cord  
(see Figure 5). Plug in the female connector of the provided  
power cord into this connector, and the male into a power  
outlet. The Switch supports input voltages from 100 to  
240 AC at 50 to 60 Hz.  
Figure 5. AC Power Connector  
Rear of Switch  
AC Power Connector  
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24-Port 10/100Mbps Ethernet Switch User Guide  
Technical Specifications  
Tables 1 to 3 provide Switch specifications.  
Table 1. General Specifications  
Feature  
Description  
Standards  
IEEE 802.3 10 Base-T ethernet  
IEEE 802.3a 100 Base-TX fast ethernet  
Protocol  
CSMA/CD  
Data transfer  
rate  
Ethernet: 10 Mbps (half duplex), 20 Mbps (full duplex)  
Fast ethernet: 100 Mbps (half duplex), 200 Mbps  
(full duplex)  
Topology  
Star  
Network  
cables  
10 Base-T: Two-pair UTP Cat. 3, 4, 5; EIA/TIA-568  
100-STP  
100 Base-TX: Two-pair UTP Cat. 5; EIA/TIA-568  
100-STP  
Number of  
ports  
24 × 10/100 Mbps auto-MDI/MDI-X ports  
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Table 2. Physical & Environmental Specifications  
Feature  
AC inputs  
Specification  
100 to 240 VAC, 50- or 60-Hz internal universal power  
supply  
Power  
6.4 watts (maximum)  
consumption  
Temperature  
Humidity  
Operating: 0˚ to 40˚ C  
Storage: 10˚ to 70˚ C  
Operating: 10 to 90%  
Storage: 5 to 90%  
Dimensions  
EMI  
440 x 140 x 44 mm (W × H × D)  
FCC Class B, CE Mark Class B, VCCI Class B  
CUL, CB  
Safety  
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24-Port 10/100Mbps Ethernet Switch User Guide  
Table 3. Performance Specifications  
Feature  
Specification  
Transmission  
method  
Store-and-forward  
RAM buffer  
512 Kbytes per device  
8K entries per device  
Filtering  
address table  
Packet filtering/  
forwarding rate  
10Mbps ethernet: 14,880/pps  
100Mbps fast ethernet: 148,800/pps  
MAC address  
learning  
Automatic update  
Technical Support  
Toll Free: 1-888-746-3238  
Web Site: www.airlinkplus.com  
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24-Port 10/100Mbps Ethernet Switch User Guide  
Copyright  
2003 AirLink+. All rights reserved. AirLink+, the stylized AirLink+ logo,  
specific product designations, and all other words and logos that are identified as  
trademarks and/or service marks are, unless noted otherwise, the trademarks and service  
marks of AirLink+. All other product or service names are the property of their respective  
holders. AirLink+ products are protected under numerous U.S. and foreign patents and  
pending applications, maskwork rights, and copyrights.  
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