Uni-Com FEP-32024T Manuale utente
908 Canada Court
City of Industry, CA 91748 U.S.A.
Phone: 626.964.7873 or 800.346.6668 Fax: 626.964.7880
www.unihomenetworkingbox.com
©UNICOM 2005. UNICOM and “A Network Systems Solution” are trademarks of UNICOM Electric, Inc.
All rights reserved. Specifications subject to change without notice.
Rev: 01.05
24 Port 10/100Mbps
Desktop Fast Ethernet Switch
(Auto MDI/MDIX)
Micro-Switch/24
USER’S MANUAL
FEP-32024T
Content
1. Introduction .............................................................. 1
Features ...................................................................... 1
Package Contents...................................................... 2
Ethernet Switching Technology............................... 3
2. Hardware Descri tion.............................................. 4
Front Panel ................................................................. 4
LED Indicators............................................................ 4
Rear Panel................................................................... 5
Deskto Installation................................................... 6
3. Network A lication ................................................ 7
4. Troubleshooting..................................................... 10
5. Technical S ecification ......................................... 12
1
1. Introduction
The 24 Port Micro-Switch/24 Desktop Fast Ethernet Switch is a multi-port
Switch that can be used to build hi h-performance switched work roup
networks. This switch is a store-and-forward device that offers low latency
for hi h-speed networkin . It is tar eted at work roup, department, or
backbone computin environments in SME (small, medium enterprise)
businesses.
The Micro-Switch/24 features a “store-and-forward “switchin scheme. This
allows the switch to auto-learn and store source addresses on a 4K-entry
MAC address table.
Features
Conforms to IEEE 802.3, 802.3u and 802.3x
Twenty-four (24) 10/100 Base-TX RJ-45 Ethernet ports
Auto-MDIX on all ports
IEEE 802.3x flow control support
Flow control on full-duplex
Back pressure on half-duplex
N-Way Auto-Ne otiation supported
Store-and-Forward switchin architecture and no-blockin full wire
speed
Back plane Bandwidth 4.8 Gbps)
Embedded 1.25Mbits memory buffer
4K MAC address table
Compact 10” size
2
Package Contents
Unpack the contents of the Micro-Switch/24 Desktop Fast Ethernet Switch
and verify them a ainst the checklist below.
Micro-Switch/24 Desktop Fast Ethernet Switch
User Guide
Power Cord
Four Rubber Feet
Micro-Switch/24 User Guide
Power Cord Rubber Feet
Fi ure 1-2. Packa e Contents
Compare the contents of your Micro-Switch/24 packa e with the standard
checklist above. If any item is missin or dama ed, please contact your local
dealer for service.
3
Ethernet Switching Technology
Ethernet Switchin Technolo y dramatically boosted the total bandwidth of a
network, eliminated con estion problems inherent with Carrier Sense
multiple access with Collision Detection (CSMA/CD) protocol, and reatly
reduced unnecessary transmissions.
This revolutionized networkin in a number of ways. First, by allowin two-
way, simultaneous transmissions over the same port (Full-duplex) which
essentially doubled the bandwidth. Second, by reducin the collision domain
to a sin le switch-port which eliminated the need for carrier sensin . Third,
by usin the store-and-forward technolo y’s approach of inspectin each
packet to intercept corrupt or redundant data and switchin eliminated,
unnecessary transmissions that slow the network. Also employin an
address learnin function, Ethernet replaced inefficient receivin ports.
Auto-ne otiation re ulates the speed and duplex of each port, based on the
capability of both devices. Flow-control allows transmission from a 100Mbps
node to a 10Mbps node without loss of data. Auto-ne otiation and flow-
control may require disablement of some networkin operations that involve
le acy equipment. Disablin the auto-ne otiation is accomplished by
manually settin the speed or duplex of a port.
Ethernet Switchin Technolo y supplied hi her performance at costs lower
than other solutions. Wider bandwidth, no con estion, and the reduction in
traffic is why switchin is replacin expensive routers and inefficient hubs as
the ultimate networkin solution. Switchin brou ht a whole new way of
thinkin to networkin .
4
2. Hardware Descri tion
This Section describes the hardware of the Micro-Switch/24 Desktop Fast
Ethernet Switch/.
The physical dimensions of the Micro-Switch/24 are: 250mmx 133 mm x
37mm (L x W x H)
Front Panel
The Front Panel of the Micro-Switch/24 consists of twenty-four (24)
10/100Base-TX RJ-45 ports. The LED Indicators are also located on the
front panel of the Switch.
Fi ure 2-1. The Front panel
RJ-45 orts (Auto MDI/MDIX): Twenty-four (24) 10/100Mbps auto-sensin
ports for 10Base-T or 100Base-TX device connection.
[Auto MDI/MDIX means that you can connect to another switch or
workstation with either strai ht-throu h or crossover cablin .]
LED Indicators
The LED Indicators ives real-time information of systematic operation
status. The followin table provides descriptions of LED status.
5
Fi ure 2-2. LED Indicators
LED Status Descri tion
Green Power is supplied
Power Off Power is not connected
Green The port is connectin with the device
Blinks The port is receivin or transmittin data
LK/ACT
Off No device attached
Table 2-1. Descriptions of LED Indicators
Rear Panel
The 3-pron ed power plu is located at the rear panel of the Micro-Switch/24
as shown in Fi ure 2-3. The Switch will work with AC in the ran e 100-240V
AC, 50-60Hz.
Fi ure 2-3. The Rear Panel of the Micro-Switch/24
6
Deskto Installation
Set the Switch on a sufficiently lar e flat space with a power outlet nearby.
The surface should be clean, smooth, level, and sturdy. Ensure there is
enou h clearance around the Switch to allow air circulation and the
attachment of the power cord and cables.
Attaching Rubber Feet
A. Make sure mountin surface on the bottom of the Switch is rease and
dust free.
B. Remove adhesive backin from your Rubber Feet.
C. Apply the Rubber Feet to each corner on the bottom of the Switch. These
footpads protect the Switch from shock and vibration.
Fi ure 2-4. Attachin Rubber Feet to each corner on the bottom of the Switch
Power On
Connect the power cord to the power socket on the rear panel of the Switch.
The other side of power cord connects to the power outlet. The internal
power supply in the Switch works with AC in the volta e ran e 100-240VAC,
frequency 50~60Hz.Check the power indicator on the front panel to ensure
that power is properly supplied.
7
3.Network A lication
This section provides a few samples of network topolo y in which the Switch
is used. In eneral, the Micro-Switch/24 Desktop Fast Ethernet Switch is
desi ned as a se ment switch. That is, with its lar e address table (4K MAC
address) and hi h performance, it is ideal for interconnectin networkin
se ments.
You can also use the Micro-Switch/24 to connect PCs, workstations, and
servers to each other by connectin these devices directly to the Switch. The
switch automatically learns node addresses, which are subsequently used to
filter and forward all traffic based on the destination address. The Switch can
connect with another switch or hub to interconnect each of your small,
switched work roups to form a lar er switched network.
Small Workgrou
The Micro-Switch/24 can be used as a standalone switch to which personal
computers, servers, and printer servers are directly connected to form a
small work roup.
Fi ure 3-1. Small Work roup Application
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