LG-Nortel LNES24 User manual

LG-Nortel ELO ES24
(LNES24)
Fast Ethernet Switch
User Guide

Copyright
Information furnished by LG-Nortel Co.Ltd.(LG-Nortel) is believed to be accurate and
reliable. However, no res onsibility is assumed by for its use, nor for any infringements
of atents or other rights of third arties which may result from its use. No license is
granted by im lication or otherwise under any atent or atent rights of LG-NORTEL.
LG-NORTEL reserves the right to change s ecifications at any time without notice.
Co yright © 2008 by
LG-NORTEL Co.Ltd.
GS Tower, 679 Yoksam-dong,
Kangnam-gu, Seoul, 135-985,Korea
All rights reserved. Printed in Taiwan
Trademarks:
LG-NORTEL is a registered trademark; Other roduct and com any names are trademarks or
registered trademarks of their res ective holders.

ii
L IMITED W ARRANTY
Limited Warranty Statement:
LG-Nortel warrants the Products, excluding consumable items to be free from defective design
attributable to LG-Nortel, defective material or faulty workmanshi and will conform to the
S ecifications for twelve (12) months from the date of Customer acce tance of the Product.

iii
WARRANTIES EXCLUSIVE: IF AN LG-NORTEL PRODUCT DOES NOT OPERATE
AS WARRANTED ABOVE, CUSTOMER.S SOLE REMEDY SHALL BE REPAIR OR
REPLACEMENT OF THE PRODUCT IN QUESTION, AT LG-NORTEL’S OPTION. THE
FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN
LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED,
EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE,
INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE. LG-NORTEL NEITHER ASSUMES NOR
AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER
LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION,
MAINTENANCE OR USE OF ITS PRODUCTS. LG-NORTEL SHALL NOT BE LIABLE
UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THE
ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY
CUSTOMER.S OR ANY THIRD PERSON.S MISUSE, NEGLECT, IMPROPER
INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR
ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY
ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.
LIMITATION OF LIABILITY: IN NO EVENT, WHETHER BASED IN CONTRACT
OR TORT (INCLUDING NEGLIGENCE), SHALL LG-NORTEL BE LIABLE FOR
INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE
DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE, LOSS OF BUSINESS, OR
OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE
SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR
INTERRUPTION OF ITS PRODUCTS, EVEN IF LG-NORTEL OR ITS AUTHORIZED
RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES
OR THE LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
CONSUMER PRODUCTS, SO THE ABOVE LIMITATIONS AND EXCLUSIONS
MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL
RIGHTS, WHICH MAY VARY FROM STATE TO STATE. NOTHING IN THIS
WARRANTY SHALL BE TAKEN TO AFFECT YOUR STATUTORY RIGHTS.
* LG-NORTEL will rovide warranty service for one year following discontinuance from the
active LG-NORTEL rice list. Under the limited lifetime warranty, internal and external ower
su lies, fans, and cables are covered by a standard one-year warranty from date of urchase.
LG-NORTEL Co.Ltd.
GS Tower, 679 Yoksam-dong,
Kangnam-gu, Seoul, 135-985,Korea

iv
C OMPLIANCES
FCC - C ass A
This equi ment has been tested and found to com ly with the limits for a Class A digital
device, ursuant to Part 15 of the FCC Rules. These limits are designed to rovide reasonable
rotection against harmful interference in a residential installation. This equi ment generates,
uses and can radiate radio frequency energy and, if not installed and used in accordance with
instructions, may cause harmful interference to radio communications. However, there is no
guarantee that the interference will not occur in a articular installation. If this equi ment
does cause harmful interference to radio or television rece tion, which can be determined by
turning the equi ment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient the receiving antenna
• Increase the se aration between the equi ment and receiver
• Connect the equi ment into an outlet on a circuit different from that to which the receiver is
connected
• Consult the dealer or an ex erienced radio/TV technician for hel
Industry Canada - C ass A
This digital a aratus does not exceed the Class A limits for radio noise emissions from
digital a aratus as set out in the interference-causing equi ment standard entitled .Digital
A aratus,. ICES-003 of the De artment of Communications.
Cet a areil numérique res ecte les limites de bruits radioélectriques a licables aux a areils
numériques de Classe A rescrites dans la norme sur le matériel brouilleur: .A areils
Numériques,. NMB-003 édictée ar le ministère des Communications.
EC Conformance Dec aration - C ass A
LG-NORTEL contact for these roducts is:
LG-NORTEL Co.Ltd.
GS Tower, 679 Yoksam-dong,
Kangnam-gu, Seoul, 135-985,Korea
This information technology equi ment com lies with the requirements of the Council
Directive 89/336/EEC on the A roximation of the laws of the Member States relating to
Electromagnetic Com atibility and 73/23/EEC for electrical equi ment used within certain

v
voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the
com liance with these Directives, the following standards were a lied:
RFI Emission:
• Limit class A according to EN 55022:1998, IEC 60601-1-2 (EMC, medical)
• Limit class A for harmonic current emission according to EN 61000-3-2/1995
• Limitation of voltage fluctuation and flicker in low-voltage su ly system according to
EN 61000-3-3/1995
Immunity:
• Product family standard according to EN 55024:1998
• Electrostatic Discharge according to EN 61000-4-2:1995
(Contact Discharge: ±4 kV, Air Discharge: ±8 kV)
• Radio-frequency electromagnetic field according to EN 61000-4-3:1996
(80 - 1000 MHz with 1 kHz AM 80% Modulation: 3 V/m)
• Electrical fast transient/burst according to EN 61000-4-4:1995 (AC/DC
ower su ly: ±1 kV, Data/Signal lines: ±0.5 kV)
• Surge immunity test according to EN 61000-4-5:1995
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)
• Immunity to conducted disturbances, Induced by radio-frequency fields:
EN 61000-4-6:1996 (0.15 - 80 MHz with
1 kHz AM 80% Modulation: 3 V/m)
• Power frequency magnetic field immunity test according to
EN 61000-4-8:1993 (1 A/m at frequency 50 Hz)
• Voltage di s, short interru tions and voltage variations immunity test
according to EN 61000-4-11:1994 (>95% Reduction @10 ms, 30%
Reduction @500 ms, >95% Reduction @5000 ms)
LVD:
• EN 60950-1:2001

vi
P ease read the fo owing safety information carefu y
before insta ing the Switch:
WARNING: Installation and removal of the unit must be carried out by
qualified ersonnel only.
• This guide is intended for use by network administrators who are
res onsible for setting u and installing network equi ment;
consequently it assumes a basic working knowledge of LANs (Local
Area Networks).
• The unit must be connected to an earthed (grounded) outlet to
com ly with international safety standards.
• Do not connect the unit to an A.C. outlet ( ower su ly) without an
earth (ground) connection.
• The a liance cou ler (the connector to the unit and not the wall lug)
must have a configuration for mating with an EN 60320/IEC 320
a liance inlet.
• The socket outlet must be near to the unit and easily accessible. You
can only remove ower from the unit by disconnecting the ower
cord from the outlet.
• This unit o erates under SELV (Safety Extra Low Voltage) conditions
according to IEC 60950. The conditions are only maintained if the
equi ment to which it is connected also o erates under SELV
conditions.

vii
France and Peru only
This unit cannot be owered from IT . su lies. If your su lies are of IT ty e, this unit must
be owered by 230 V (2P+T) via an isolation transformer ratio 1:1, with the secondary connection
oint labelled Neutral, connected directly to earth (ground).
†Im édance à la terre
Power Cord Set
The cord set must be UL-a roved and CSA certified.
The minimum s ecifications for the flexible cord are: - No. 18
AWG - not longer than 2 meters, or 16 AWG. - Ty e SV or SJ -
3-conductor
The cord set must have a rated current ca acity of at least 10A.
U.S.A. and Canada
The attachment lug must be an earth-grounding ty e with
NEMA 5-15P (15 A, 125 V) or NEMA 6-15P (15 A, 250 V)
configuration.
Denmark The su ly lug must com ly with Section 107-2-D1, Standard
DK2-1a or DK2-5a.
Switzerland The su ly lug must com ly with SEV/ASE 1011.
The su ly lug must com ly with BS1363 (3- in 13 A) and be
fit-ted with a 5 A fuse which com lies with BS1362.
U.K.
The mains cord must be <HAR> or <BASEC> marked and be
of ty e HO3VVF3GO.75 (minimum).
The su ly lug must com ly with CEE7/7 (.SCHUKO.).
The mains cord must be <HAR> or <BASEC> marked and be
of ty e HO3VVF3GO.75 (minimum).
Euro e
IEC-320 rece tacle.

viii
Warnings and Cautionary Messages
Warning: This roduct does not contain any serviceable user arts.
Warning: Installation and removal of the unit must be carried out by qualified ersonnel
only.
Warning: When connecting this device to a ower outlet, connect the field ground lead
on the tri- ole ower lug to a valid earth ground line to revent electrical
hazards.
Caution: Wear an anti-static wrist stra or take other suitable measures to revent
electrostatic discharge when handling this equi ment.
Caution: Do not lug a hone jack connector in the RJ-45 ort. This may damage this
device. Les raccordeurs ne sont as utilisé our le système télé honique!
Caution: Use only twisted- air cables with RJ-45 connectors that conform to FCC
standards.

ix
Environmenta Statement
The manufacturer of this roduct endeavours to sustain an environmentally-friendly olicy
throughout the entire roduction rocess. This is achieved though the following means:
• Adherence to national legislation and regulations on environmental roduction standards.
• Conservation of o erational resources.
• Waste reduction and safe dis osal of all harmful un-recyclable by- roducts.
• Recycling of all reusable waste content.
• Design of roducts to maximize recyclables at the end of the roduct’s life s an.
• Continual monitoring of safety standards.
End of Product Life Span
This roduct is manufactured in such a way as to allow for the recovery and dis osal of all included
electrical com onents once the roduct has reached the end of its life.
Manufacturing Materia s
There are no hazardous nor ozone-de leting materials in this roduct.
Documentation
All rinted documentation for this roduct uses biodegradable a er that originates from
sustained and managed forests. The inks used in the rinting rocess are non-toxic.
Purpose
This guide details the hardware features of the switch, including its hysical and
erformance-related characteristics, and how to install the switch.
Audience
The guide is intended for use by network administrators who are res onsible for installing and
setting u network equi ment; consequently, it assumes a basic working knowledge of LANs
(Local Area Networks).
.

T ABLE O F C ONTENTS
Introduction 1
Features and Benefits 1
Front Panel LED’s 2
Front anel 3
Rear Panel 3
Installing the Switch 4
Package Contents 4
Selecting a Site 4
Instructions 5
Troubleshooting 7
Diagnosing Switch Indicators 7
Cables 8
Cable S ecifications 8
Product S ecifications 10

1
I NTRODUCTION
The LNES24 is a 24- ort Fast Ethernet switch. The 10BASE-T/100BASE-TX
orts deliver dedicated 10/100 Mb s links to each attached LAN segment – all
with conventional cabling and ada ters.
Auto-negotiation is used to select the o timal communication mode for
each connection. Auto-sensing is used to select the o timal transmission
s eed for each connection. With store-and-forward switching and flow
control, maximum data integrity is always maintained, even under heavy
loading. Easy installation and reliability make this lug-and- lay switch an
ideal choice for smooth Fast Ethernet integration.
Features and Benefits
• Auto-negotiation of half or full du lex, and auto-sensing of
transmission s eed, on all orts
• Auto configuration for MDI/MDI-X cable connection allows
connections to servers, workstations, hubs or switches to be made
with straight-through cabling
• ANSI/IEEE 802.3u com liance ensures com atibility with
standards-based hubs, switches and cards from any vendor
• Store-and-forward switching ensures error-free transmission
• Half- and full-du lex flow control revents ackets from being
dro ed under heavy loading
• Plug-and- lay
• “At-a-glance” LEDs for ort and system status monitoring
• Deskto and rack mountable

2
Front Pane LEDs
The front anel of the switch rovides a link status LED for each RJ-45
ort. In addition, the front anel also contains status LEDs for
“at-a-glance” system monitoring. The following table details the functions
of the various indicators:
Port and Switch Status LEDs
LED Condition Status
Power On Green The switch is receiving ower.
Ports
On The ort has established a valid network
connection.
Flashing Traffic is assing through the ort.
Link/Act
Off The ort has not established any network
connection.
On Indicates the ort is o erating at 100Mb s
10/100
Off Indicates the ort is o erating at 10 Mb s.















4
I NSTALLING THE S WITCH
Before installing the switch, verify that you have all the items listed under
“Package Contents.” Note that the switch can be installed on any suitably
large flat surface or in a standard EIA 19-inch rack.
Package Contents
The Switch 10/100 includes:
• LNES24 Fast Ethernet Switch
• Four rubber foot ads
• Rack-mount bracket kit
• A ro riate AC ower cord
• This User Guide
Se ecting a Site
Be sure to follow the site selection guidelines below when choosing a
location:
• Select a suitable location for the switch:
o It should be accessible for installing, cabling and maintaining the
switch.
o The tem erature and humidity should be within the ranges listed
in the s ecifications.
o The status LEDs should be clearly visible.
o There should be adequate s ace (a roximately two inches) on all
sides for ro er air flow.

5
• Make sure twisted- air cable is always routed away from ower lines,
fluorescent lighting fixtures and other sources of electrical
interference such as radios, transmitters, etc.
• Make sure that a ro erly grounded ower outlet is within 2.44 meters
(8 feet) of the switch and is owered from an inde endent circuit
breaker. As with any equi ment, using a filter or surge su ressor is
recommended.
Instructions
1. Positioning the Switch: For deskto or shelf mounting, attach the
four adhesive foot ads to the bottom of the switch. For rack- mounting,
attach the mounting brackets on both sides of the screws rovided, and
install the switch in the rack.
2. App ying Power: Plug one end of the ower ada ter into the ower
rece tacle at back of the switch, and the other end into an a ro riate
electrical outlet. Check the Power LED to be sure ower is on.
Note: It is not necessary to ower off the switch before connecting or
disconnecting any UTP cables, as these actions will not disru t
the o eration of other devices attached to the switch.
3. Connecting PCs: Connect each PC to an RJ-45 ort on the switch
using Category 5 or 5e shielded or unshielded twisted- air (UTP or
STP) cable, maximum length 100 meters (328 ft). LNES24 will su ort
u to 24 PCs. All orts on the switch su ort automatic MDI/MDI-X
o eration, so you can use straight-through cables for all network
connections to PCs or servers, or to other switches or hubs.
Note: If an attached device does not su ort auto-negotiation, the data
rate will be sensed automatically and the communication mode
will default to half du lex.

6
4. Cascading Switches and Other Network Devices: All the
orts on the switch su ort automatic MDI/MDI-X configuration for cable
connections. This allows you to use straight-through cable to connect
to other switches or hubs from any ort on the switch. No crossover
cables or other device settings are needed. See the Cable
S ecifications.
Caution: Do not lug a hone jack connector into any RJ-45 ort. This
the switch. Instead, use only twisted- air cables
with RJ-45 connectors that conform with FCC standards.

7
T ROUBLESHOOTING
Diagnosing Switch Indicators
1. Symptom
Power LED does not light after ower on.
Probab e Causes
o AC ower cord may be defective.
Possib e So utions
o Check for loose connections.
o Check the ower outlet by using it for another device.
o Re lace the AC ower cord.
2. Symptom
Link LED does not light after connection is made.
Probab e Causes
o Switch ort, network card or cable may be defective.
Possib e So utions
o Check that the switch and attached device are both owered
on.
o Be sure the network cable is connected to both devices.
o Verify that Category 5 or better cable is used for 10/100
Mb s connections and that the length of any cable does not
exceed 100 meters (328 feet).
o Check the network card and cable connections for defects.
o Re lace the defective card or cable if necessary.

8
C ABLES
Cab e Specifications
Cable Types and Specifications
Cable Type Max Length
Connector
10BASE-T 2- air Cat. 3 or better 100-ohm
UTP 100 m (328 ft)
RJ-45
100BASE-TX
2- air Cat. 5 or better 100-ohm
UTP 100 m (328 ft)
RJ-45
10BASE-T/100BASE-TX Pin Assignments
Caution: DO NOT lug a hone jack connector into any RJ-45 ort.
Use only twisted- air cables with RJ-45 connectors that
conform with FCC standards.
Use unshielded twisted- air (UTP) or shielded twisted- air (STP) cable for
RJ-45 connections: 100-ohm Category 3 or better cable for 10 Mb s
connections or 100-ohm Category 5 or better cable for 100 Mb s
connections. Also be sure that the length of any twisted- air connection
does not exceed 100 meters (328 feet).
Because all orts on this switch su ort automatic MDI/MDI-X
o eration, you can use straight-through cables for all network connections
to PCs or servers, or to other switches or hubs. In straight-through cable,
ins 1, 2, 3, and 6, at one end of the cable, are connected straight through
to ins 1, 2, 3 and 6 at the other end of the cable.

9
The table below shows the 10BASE-T/100BASE-TX MDI-X and MDI
ort inouts.
Pin MDI-X Signal Name MDI Signal Name
1 Receive Data lus (RD+) Transmit Data lus (TD+)
2 Receive Data minus (RD-) Transmit Data minus (TD-)
3 Transmit Data lus (TD+) Receive Data lus (RD+)
6 Transmit Data minus (TD-) Receive Data minus (RD-)
4,5,7,8 Not used at 10/100 Mb s Not used at 10/100 Mb s