LG-Nortel ELO GS8MP
(LNGS8MP)
Gigabit Ethernet Switch
Installation Guide
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Installation Guide
Web-Smart PoE Switch
Layer 2 Workgroup Switch
with 7 10/100/1000BASE-T (RJ-45) Ports
and 1 Gigabit Combination (RJ-45/SFP) Port
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LNGS8MP
January, 2008
150000052200A
Issue 1.0
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LIMITED WARRANTY
LG-NORTEL warrants the Products, excluding consumable items to be free from defective
design attributable to LG-NORTEL, defective material or faulty workmanship and will conform to
the Specifications for twelve (12) months from the date of Customer acceptance of the Product.
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 provide warranty service for one year following discontinuance from the active
LG-NORTEL price list. Under the limited lifetime warranty, internal and external power supplies,
fans, and cables are covered by a standard one-year warranty from date of purchase.
LG-NORTEL Co.Ltd.
GS Tower, 679 Yoksam-dong,
Kangnam-gu, Seoul, 135-985, Korea
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Compliances and Safety Warnings
FCC - Class A
This equipment has been tested and found to comply with the limits for a Class A 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 the instruction manual,
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.
You are cautioned that changes or modifications not expressly approved by the party
responsible for compliance could void your authority to operate the equipment.
You may use unshielded twisted-pair (UTP) for RJ-45 connections - Category 3 or better
for 10 Mbps connections, Category 5 or better for 100 Mbps connections, Category 5, 5e,
or 6 for 1000 Mbps connections. For fiber optic connections, you may use 50/125 or 62.5/
125 micron multimode fiber or 9/125 micron single-mode fiber.
i
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CE Mark Declaration of Conformance for EMI and Safety (EEC)
This information technology equipment complies with the requirements of the Council
Directive 89/336/EEC on the Approximation of the laws of the Member States relating to
Electromagnetic Compatibility and 73/23/EEC for electrical equipment used within certain
voltage limits and the Amendment Directive 93/68/EEC. For the evaluation of the
compliance with these Directives, the following standards were applied:
RFI Emission:
Limit class A according to EN 55022:1998
Limit class A for harmonic current emission according to EN 61000-3-2/1995
Limitation of voltage fluctuation and flicker in low-voltage supply 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 power supply:
±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 dips, short interruptions 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
Caution: Do not plug a phone jack connector in the RJ-45 port. This may damage this
device.
Attention:Les raccordeurs ne sont pas utilisés pour le système téléphonique!
Safety Compliance
Warning: Fiber Optic Port Safety
When using a fiber optic port, never look at the transmit laser while
it is powered on. Also, never look directly at the fiber TX port and
fiber cable ends when they are powered on.
CLASS I
LASER DEVICE
Avertissment: Ports pour fibres optiques - sécurité sur le plan optique
Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez
DISPOSITIF LASER
DE CLASSE I
jamais directement le port TX (Transmission) à fibres optiques et
les embouts de câbles à fibres optiques tant qu'ils sont sous
tension.
ii
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Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit
Niemals ein Übertragungslaser betrachten, während dieses
eingeschaltet ist. Niemals direkt auf den
LASERGERÄT
DER KLASSE I
Faser-TX-Anschluß und auf die Faserkabelenden schauen,
während diese eingeschaltet sind.
Power Cord Safety
Please read the following safety information carefully before installing this switch:
Warning: Installation and removal of the unit must be carried out by qualified personnel
only.
•
•
•
•
•
The unit must be connected to an earthed (grounded) outlet to comply with international
safety standards.
Do not connect the unit to an A.C. outlet (power supply) without an earth (ground)
connection.
The appliance coupler (the connector to the unit and not the wall plug) must have a
configuration for mating with an EN 60320/IEC 320 appliance inlet.
The socket outlet must be near to the unit and easily accessible. You can only remove
power from the unit by disconnecting the power cord from the outlet.
This unit operates under SELV (Safety Extra Low Voltage) conditions according to
IEC 60950. The conditions are only maintained if the equipment to which it is connected
also operates under SELV conditions.
France and Peru only
†
This unit cannot be powered from IT supplies. If your supplies are of IT type, this unit
must be powered by 230 V (2P+T) via an isolation transformer ratio 1:1, with the
secondary connection point labelled Neutral, connected directly to earth (ground).
†
Impédance à la terre
Warning: The user should disconnect all Telecommunications Network connectors and all
Cable Distribution System connectors before disconnecting the power.
iii
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Important! Before making connections, make sure you have the correct cord set. Check
it (read the label on the cable) against the following:
Power Cord Set
U.S.A. and Canada
The cord set must be UL-approved and CSA certified.
The minimum specifications for the flexible cord are:
- No. 18 AWG - not longer than 2 meters, or 16 AWG.
- Type SV or SJ
- 3-conductor
The cord set must have a rated current capacity of at least 10 A
The attachment plug must be an earth-grounding type with NEMA 5-15P (15 A,
125 V) or NEMA 6-15P (15 A, 250 V) configuration.
Denmark
The supply plug must comply with Section 107-2-D1, Standard DK2-1a or
DK2-5a.
Switzerland
U.K.
The supply plug must comply with SEV/ASE 1011.
The supply plug must comply with BS1363 (3-pin 13 A) and be fitted with a 5 A
fuse which complies with BS1362.
The mains cord must be <HAR> or <BASEC> marked and be of type
HO3VVF3GO.75 (minimum).
Europe
The supply plug must comply with CEE7/7 (“SCHUKO”).
The mains cord must be <HAR> or <BASEC> marked and be of type
HO3VVF3GO.75 (minimum).
IEC-320 receptacle.
Veuillez lire à fond l'information de la sécurité suivante avant
d'installer le Switch:
AVERTISSEMENT: L’installation et la dépose de ce groupe doivent être confiés à un
personnel qualifié.
•
•
•
Ne branchez pas votre appareil sur une prise secteur (alimentation électrique) lorsqu'il
n'y a pas de connexion de mise à la terre (mise à la masse).
Vous devez raccorder ce groupe à une sortie mise à la terre (mise à la masse) afin de
respecter les normes internationales de sécurité.
Le coupleur d’appareil (le connecteur du groupe et non pas la prise murale) doit
respecter une configuration qui permet un branchement sur une entrée d’appareil EN
60320/IEC 320.
•
•
La prise secteur doit se trouver à proximité de l’appareil et son accès doit être facile.
Vous ne pouvez mettre l’appareil hors circuit qu’en débranchant son cordon électrique
au niveau de cette prise.
L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à
la norme IEC 60950. Ces conditions ne sont maintenues que si l’équipement auquel il
est raccordé fonctionne dans les mêmes conditions.
iv
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France et Pérou uniquement:
Ce groupe ne peut pas être alimenté par un dispositif à impédance à la terre. Si vos
alimentations sont du type impédance à la terre, ce groupe doit être alimenté par une
tension de 230 V (2 P+T) par le biais d’un transformateur d’isolement à rapport 1:1, avec
un point secondaire de connexion portant l’appellation Neutre et avec raccordement
direct à la terre (masse).
Cordon électrique - Il doit être agréé dans le pays d’utilisation
Etats-Unis et Canada:
Le cordon doit avoir reçu l’homologation des UL et un certificat de la CSA.
Les spécifications minimales pour un cable flexible sont AWG No. 18, ouAWG
No. 16 pour un cable de longueur inférieure
- type SV ou SJ
- 3 conducteurs
à
2 métres.
Le cordon doit être en mesure d’acheminer un courant nominal d’au moins 10
A.
La prise femelle de branchement doit être du type à mise à la terre (mise à la
masse) et respecter la configuration NEMA 5-15P (15 A, 125 V) ou NEMA
6-15P (15 A, 250 V).
Danemark:
La prise mâle d’alimentation doit respecter la section 107-2 D1 de la norme
DK2 1a ou DK2 5a.
Suisse:
Europe
La prise mâle d’alimentation doit respecter la norme SEV/ASE 1011.
La prise secteur doit être conforme aux normes CEE 7/7 (“SCHUKO”)
LE cordon secteur doit porter la mention <HAR> ou <BASEC> et doit être de
type HO3VVF3GO.75 (minimum).
Bitte unbedingt vor dem Einbauen des Switches die folgenden
Sicherheitsanweisungen durchlesen:
WARNUNG: Die Installation und der Ausbau des Geräts darf nur durch Fachpersonal
erfolgen.
•
•
•
•
Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose angeschlossen
werden.
Das Gerät muß an eine geerdete Steckdose angeschlossen werden, welche die
internationalen Sicherheitsnormen erfüllt.
Der Gerätestecker (der Anschluß an das Gerät, nicht der Wandsteckdosenstecker) muß
einen gemäß EN 60320/IEC 320 konfigurierten Geräteeingang haben.
Die Netzsteckdose muß in der Nähe des Geräts und leicht zugänglich sein. Die
Stromversorgung des Geräts kann nur durch Herausziehen des Gerätenetzkabels aus
der Netzsteckdose unterbrochen werden.
•
Der Betrieb dieses Geräts erfolgt unter den SELV-Bedingungen
(Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen sind nur gegeben,
wenn auch die an das Gerät angeschlossenen Geräte unter SELV-Bedingungen
betrieben werden.
v
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Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:
Schweiz
Europe
Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalten.
Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung) sein und
die Aufschrift <HAR> oder <BASEC> tragen.
Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).
Warnings and Cautionary Messages
Warning: This product does not contain any serviceable user parts.
Warning: Installation and removal of the unit must be carried out by qualified
personnel only.
Warning: When connecting this device to a power outlet, connect the field
ground lead on the tri-pole power plug to a valid earth ground line to
prevent electrical hazards.
Warning: This switch uses lasers to transmit signals over fiber optic cable. The
lasers are compliant with the requirements of a Class 1 Laser
Product and are inherently eye safe in normal operation. However,
you should never look directly at a transmit port when it is powered
on.
Caution:
Wear an anti-static wrist strap or take other suitable measures to
prevent electrostatic discharge when handling this equipment.
Caution:
Do not plug a phone jack connector in the RJ-45 port. This may
damage this device. Les raccordeurs ne sont pas utilisé pour le
système téléphonique!
Caution:
Use only twisted-pair cables with RJ-45 connectors that conform to
FCC standards.
Warnings (in German)
Achtung: Dieses Produkt enthält keine Teile, die eine Wartung vom Benutzer
benötigen.
Achtung: Installation und Deinstallation des Gerätes müssen von qualifiziertem
Servicepersonal durchgeführt werden.
Achtung: Wenn das Gerät an eine Steckdose angeschlossen wird, muß der
Masseanschluß am dreipoligen Netzstecker mit Schutzerde
verbunden werden, um elektrische Gefahren zu vermeiden.
Achtung: Dieses Gerät nutzt Laser zur Signalübertragung über Glasfasern. Die
Laser entsprechen den Anforderungen an eine Lasereinrichtung der
Klasse 1 und sind durch ihre Bauart im normalen Betrieb sicher für die
Augen. Trotzdem sollte niemals direkt in den einen
Übertragungskanal geblickt werden, wenn er eingeschaltet ist.
vi
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Environmental Statement
The manufacturer of this product endeavours to sustain an environmentally-friendly policy
throughout the entire production process. This is achieved through the following means:
•
Adherence to national legislation and regulations on environmental production
standards.
•
•
•
•
•
Conservation of operational resources.
Waste reduction and safe disposal of all harmful un-recyclable by-products.
Recycling of all reusable waste content.
Design of products to maximize recyclables at the end of the product’s life span.
Continual monitoring of safety standards.
End of Product Life Span
This product is manufactured in such a way as to allow for the recovery and disposal of all
included electrical components once the product has reached the end of its life.
Manufacturing Materials
There are no hazardous nor ozone-depleting materials in this product.
Documentation
All printed documentation for this product uses biodegradable paper that originates from
sustained and managed forests. The inks used in the printing process are non-toxic.
Purpose
This guide details the hardware features of this switch, including Its physical and
performance-related characteristics, and how to install the switch.
Audience
This guide is for system administrators with a working knowledge of network
management. You should be familiar with switching and networking concepts.
Zielgruppe Dieser Anleitung ist fuer Systemadministratoren mit Erfahrung im
Netzwerkmangement. Sie sollten mit Switch- und Netzwerkkonzepten vertraut sein.
Related Publications
The following publication gives specific information on how to operate and use the
management functions of this switch:
The LNGS8MP Management Guide
Also, as part of both switches firmware, there is an online web-based help that describes
all management related features.
vii
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viii
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Contents
ix
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Contents
4-7
x
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Tables
xi
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Figures
xii
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Chapter 1: Introduction
Overview
The LNGS8MP is an intelligent Layer 2 switch with eight 10/100/1000BASE-T ports,
*
one of which is a Gigabit combination port that is shared with an SFP transceiver
slot.
The switch’s eight 10/100/1000 Mbps ports support the IEEE 802.3af
Power-over-Ethernet (PoE) standard that enables DC power to be supplied to
attached devices over the data wire pairs in the connecting Ethernet cable.
10/100/1000 Mbps RJ-45 Ports
Port Status Indicators
Status
1
2
3
4
5
6
7
8
1000BASE-T/SFP Port
Figure 1-1 Front Panel
100-240V ~50-60Hz 1.5A
Power Socket
Figure 1-2 Rear Panel
*
If an SFP transceiver is plugged in, the corresponding RJ-45 port is disabled.
1-1
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Introduction
1
Switch Architecture
The switch employs a wire-speed, non-blocking switching fabric. This permits
simultaneous wire-speed transport of multiple packets at low latency on all ports.
The switch also features full-duplex capability on all ports, which effectively doubles
the bandwidth of each connection.
The switch uses store-and-forward switching to ensure maximum data integrity. With
store-and-forward switching, the entire packet must be received into a buffer and
checked for validity before being forwarded. This prevents errors from being
propagated throughout the network.
Power-over-Ethernet Capability
The switch’s eight 10/100/1000 Mbps ports support the IEEE 802.3af
Power-over-Ethernet (PoE) standard that enables DC power to be supplied to
attached devices using wires in the connecting Ethernet cable. Any 802.3af
compliant device attached to a port can directly draw power from the switch over the
Ethernet cable without requiring its own separate power source. This capability gives
network administrators centralized power control for devices such as IP phones and
wireless access points, which translates into greater network availability.
For each attached 802.3af-compliant device, the switch automatically senses the
load and dynamically supplies the required power. Independent overload and
short-circuit protection for each port allows the switch to automatically shut down a
port’s power when limits are exceeded.
Port 1 on the switch can provide up to 25 W of power to an attached device at the
standard 48 DC voltage. Ports 2-8 can provide up to 15.4 W of power.
Network Management Options
The switch contains a comprehensive array of LEDs for “at-a-glance” monitoring of
network and port status. They also include a management agent that allows you to
configure or monitor the switch using its embedded management software.
For a detailed description of switch’s advanced features, refer to the Management
Guide.
1-2
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Description of Hardware
1
Description of Hardware
10/100/1000BASE-T Ports
The switch contains eight RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or
full duplex, or at 1000 Mbps, full duplex. Because all ports on the switch support
automatic MDI/MDI-X operation, you can use straight-through cables for all network
connections to PCs or servers, or to other switches or hubs. (See “1000BASE-T Pin
Each of these ports support auto-negotiation, so the optimum transmission mode
(half or full duplex), and data rate (10, 100, or 1000 Mbps) can be selected
automatically. If a device connected to one of these ports does not support
auto-negotiation, the communication mode of that port can be configured manually.
SFP Slot
The Small Form Factor Pluggable (SFP) transceiver slot is shared with RJ-45 Port 8.
If an SFP transceiver (purchased separately) is installed in the slot and has a valid
link on its port, the associated RJ-45 port is disabled and cannot be used.
Port and Power Status LEDs
The switch includes a display panel for key system and port indications that simplify
installation and network troubleshooting. The LEDs, which are located on the front
panel for easy viewing, are shown below and described in the following tables.
1
Port Status LEDs
Power Status LED
Figure 1-3 Port and Power LEDs
1-3
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Introduction
1
Table 1-1 Port Status LEDs
Condition Status
LED
Fast Ethernet Ports (Ports 1-8)
Link/Act
(Link/Activity)
On/Flashing Green Port has a valid 1000Mbps link. Flashing indicates
network activity
On/Flashing Amber Port has a valid 10/100Mbps link. Flashing indicates
network activity
Off
No link.
PoE
On Amber
Off
A PoE device is connected.
No PoE device connected.
SFP transceiver installed correctly.
No SFP present.
(SFP) Status
On Green
Off
Table 1-2 Power Status LED
LED
Condition
Status
Power
Green
Off
Internal power is operating normally.
Power off.
Power Supply Socket
The power socket is located on the rear panel of the switch. The standard power
socket is for the AC power cord.
100-240V ~50-60Hz 1.5A
Figure 1-4 Power Supply Socket
1-4
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Features and Benefits
1
Features and Benefits
Connectivity
•
8 10/100/1000 Mbps ports for easy Gigabit Ethernet integration and for protection
of your investment in legacy LAN equipment.
•
•
All RJ-45 ports support IEEE 802.3af standard Power-over-Ethernet
Auto-negotiation enables each RJ-45 port to automatically select the optimum
communication mode (half or full duplex) if this feature is supported by the
attached device; otherwise the port can be configured manually.
•
•
RJ-45 ports support auto MDI/MDI-X pinout selection.
Unshielded (UTP) cable supported on all RJ-45 ports: Category 3 or better for
10 Mbps connections, Category 5 or better for 100 Mbps connections, and
Category 5, 5e, 6 or better for 1000 Mbps connections.
•
IEEE 802.3-2005 Ethernet, Fast Ethernet, and Gigabit Ethernet.
Expandability
•
One Small Form Factor Pluggable (SFP) transceiver slot (shared with Port 8)
•
Supports 1000BASE-SX, 1000BASE-LX and 1000BASE-LH SFP transceivers.
Performance
•
•
•
•
•
Transparent bridging.
Provides store-and-forward switching
Jumbo-Frame up to 9.6 Kbytes
Supports flow control
Broadcast storm control
Management
•
“At-a-glance” LEDs for easy troubleshooting.
•
Network management agent
•
•
Manages switch in-band
Supports web-based interface
1-5
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Introduction
1
1-6
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Chapter 2: Network Planning
Introduction to Switching
A network switch allows simultaneous transmission of multiple packets via
non-crossbar switching. This means that it can partition a network more efficiently
than bridges or routers. The switch has, therefore, been recognized as one of the
most important building blocks for today’s networking technology.
When performance bottlenecks are caused by congestion at the network access
point (such as the network card for a high-volume file server), the device
experiencing congestion (server, power user or hub) can be attached directly to a
switched port. And, by using full-duplex mode, the bandwidth of the dedicated
segment can be doubled to maximize throughput.
When networks are based on repeater (hub) technology, the distance between end
stations is limited by a maximum hop count. However, a switch turns the hop count
back to zero. So subdividing the network into smaller and more manageable
segments, and linking them to the larger network by means of a switch, removes this
limitation.
A switch can be easily configured in any Ethernet, Fast Ethernet, or Gigabit
Ethernet, network to significantly boost bandwidth while using conventional cabling
and network cards.
2-1
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Network Planning
2
Application Examples
The switch is not only designed to segment your network, but also to provide a wide
range of options in setting up network connections. Some typical applications are
described below.
Supplying PoE
The switch is an excellent choice for supplying power to connected PoE devices
such as web cameras, IP telephones or access points. You can easily connect a
PoE device to a switch port and allow power to be supplied over the connecting
cable. Each of the eight ports on the switch can provide power to a connected
device.
In the figure below, the switch is supplying power to three PoE devices. It is also
providing dedicated 100 Mbps full-duplex data connections to the devices. In
addition, other non-PoE devices can be connected to the switch.
Status
1
2
3
4
5
6
7
8
Power-over-Ethernet Devices
Access Point
IP Telephone
Web Camera
Figure 2-1 PoE Connections
Collapsed Backbone
The switch is an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit
Ethernet installations where significant growth is expected in the near future. In a
basic stand-alone configuration, it can provide direct full-duplex connections for up
to eight workstations or servers. You can easily build on this basic configuration,
adding direct full-duplex connections to workstations or servers. When the time
comes for further expansion, just connect to another hub or switch using one of the
Gigabit Ethernet ports built into the front panel, a Gigabit Ethernet port on a plug-in
SFP transceiver.
In the figure below, the 8-port switch is operating as a collapsed backbone for a
small LAN. It is providing dedicated 10 Mbps full-duplex connections to
workstations, 100 Mbps full-duplex connections to power users, and 1 Gbps
full-duplex connections to servers. In addition, connected IP phones and wireless
2-2
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Application Examples
2
access points are receiving PoE power from the switch.
Status
1
2
3
4
5
6
7
8
...
Power-over-Ethernet Devices
10/100 Mbps
Full Duplex
Servers
1000 Mbps
Full Duplex
...
Workstations
100 Mbps
Full Duplex
Standard LAN
PoE
Network Segment
100 Mbps
Full Duplex
Figure 2-2 Collapsed Backbone
Meeting Room
With eight 1000 Mbps parallel bridging ports (i.e., eight distinct collision domains),
this switch can function as an efficient bridged node that is ideal for a meeting room
environment. Zero noise makes the switch inobtrusive for such a setting.
In the figure below, the LNGS8MP is connected to a central wiring closet via a
1000BASE-SX connection. The 1000BASE-T RJ-45 ports on the switch are
providing 10/100 Mbps full-duplex connections for PCs and notebooks, as well as
providing power and connectivity for PoE devices, such as IP telephones and web
cameras.
Wiring Closet
1000BASE-SX SMF
Meeting Room PoE Switch
Server Farm
Status
1
2
3
4
5
6
7
8
10/100 Mbps Segments
Computer
Web Camera IP Telephone
Standard LAN
PoE
Figure 2-3 Meeting Room
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Network Planning
2
Making VLAN Connections
The switch supports VLANs that can be used to organize any group of network
nodes into separate broadcast domains. VLANs confine broadcast traffic to the
originating group, and can eliminate broadcast storms in large networks. This
provides a more secure and cleaner network environment.
VLANs can be based on untagged port groups, or traffic can be explicitly tagged to
identify the VLAN group to which it belongs. Untagged VLANs can be used for small
networks attached to a single switch. However, tagged VLANs should be used for
larger networks, and all the VLANs assigned to the inter-switch links.
R&D
VLAN 1
Status
1
2
3
4
5
6
7
8
Tagged
Ports
Untagged Ports
Tagged Port
VLAN
aware
switch
VLAN
unaware
switch
Finance
VLAN 2
Testing
R&D
Marketing
Finance
Testing
VLAN 3
VLAN 4
VLAN 1
VLAN 2
VLAN 3
Figure 2-4 Making VLAN Connections
Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use
untagged ports.
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Application Notes
2
Application Notes
1. Full-duplex operation only applies to point-to-point access (such as when a
switch is attached to a workstation, server or another switch). When the switch
is connected to a hub, both devices must operate in half-duplex mode.
2. For network applications that require routing between dissimilar network types,
you can attach the switch directly to a multi-protocol router.
3. As a general rule, the length of fiber optic cable for a single switched link should
not exceed:
•1000BASE-SX: 550 m (1805 ft) for multimode fiber
•1000BASE-LX: 5 km (3.1 miles) for single-mode fiber
•1000BASE-LH: 70 km (43 miles) for single-mode fiber
However, power budget constraints must also be considered when calculating
the maximum cable length for your specific environment.
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Network Planning
2
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Chapter 3: Installing the Switch
Selecting a Site
switch units can be mounted in a standard 19-inch equipment rack or on a flat
surface. Be sure to follow the guidelines below when choosing a location.
•
The site should:
•
•
be at the center of all the devices you want to link and near a power outlet.
be able to maintain its temperature within 0 to 45 °C (32 to 113 °F) and its
humidity within 10% to 90%, non-condensing
•
provide adequate space (approximately five centimeters or two inches) on all
sides for proper air flow
•
•
be accessible for installing, cabling and maintaining the devices
allow the status LEDs to be clearly visible
•
•
Make sure twisted-pair cable is always routed away from power lines, fluorescent
lighting fixtures and other sources of electrical interference, such as radios and
transmitters.
Make sure that the unit is connected to a separate grounded power outlet that
provides 100 to 240 VAC, 50 to 60 Hz, is within 2 m (6.6 feet) of each device and
is powered from an independent circuit breaker. As with any equipment, using a
filter or surge suppressor is recommended.
Ethernet Cabling
To ensure proper operation when installing the switches into a network, make sure
that the current cables are suitable for 10BASE-T, 100BASE-TX or 1000BASE-T
operation. Check the following criteria against the current installation of your
network:
•
Cable type: Unshielded twisted pair (UTP) or shielded twisted pair (STP) cables
with RJ-45 connectors; Category 3 or better for 10BASE-T, Category 5 or better
for 100BASE-TX, and Category 5, 5e or 6 for 1000BASE-T.
•
•
•
Protection from radio frequency interference emissions
Electrical surge suppression
Separation of electrical wires (switch related or other) and electromagnetic fields
from data based network wiring
•
Safe connections with no damaged cables, connectors or shields
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Installing the Switch
3
RJ-45 Connector
Figure 3-1 RJ-45 Connections
Equipment Checklist
After unpacking the switch unit, check the contents to be sure you have received all
the components. Then, before beginning the installation, be sure you have all other
necessary installation equipment.
Package Contents
•
•
•
LNGS8MP switch
Four adhesive foot pads
Bracket Mounting Kit containing two brackets and eight screws for attaching the
brackets to the switch
•
•
•
Power cord—either US, Continental Europe or UK
This Installation Guide
Management Guide CD
Optional Rack-Mounting Equipment
If you plan to rack-mount the switches, be sure to have the following equipment
available:
•
•
Four mounting screws for each device you plan to install in a rack—these are not
included
A screwdriver (Phillips or flathead, depending on the type of screws used)
Mounting
A switch unit can be mounted in a standard 19-inch equipment rack or on a desktop
or shelf. Mounting instructions for each type of site follow.
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Mounting
3
Rack Mounting
Before rack mounting the switch, pay particular attention to the following factors:
•
Temperature: Since the temperature within a rack assembly may be higher than
the ambient room temperature, check that the rack-environment temperature is
•
•
Mechanical Loading: Do not place any equipment on top of a rack-mounted unit.
Circuit Overloading: Be sure that the supply circuit to the rack assembly is not
overloaded.
•
Grounding: Rack-mounted equipment should be properly grounded. Particular
attention should be given to supply connections other than direct connections to
the mains.
To rack-mount devices:
1. Attach the brackets to the device using the screws provided in the Bracket
Mounting Kit.
Figure 3-2 Attaching the Brackets
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Installing the Switch
3
2. Mount the device in the rack, using four rack-mounting screws (not provided).
Figure 3-3 Installing the Switch in a Rack
end of this chapter.
4. If installing multiple switches, mount them in the rack, one below the other, in
any order.
Desktop or Shelf Mounting
1. Attach the four adhesive feet to the bottom of the first switch.
8
S t a t u s
7
6
5
4
3
1
2
Figure 3-4 Attaching the Adhesive Feet
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Installing an Optional SFP Transceiver
3
2. Set the device on a flat surface near an AC power source, making sure there
are at least two inches of space on all sides for proper air flow.
end of this chapter.
4. If installing multiple switches, attach four adhesive feet to each one. Place each
device squarely on top of the one below, in any order.
Installing an Optional SFP Transceiver
Figure 3-5 Inserting an SFP Transceiver into a Slot
The switch supports the following optional transceivers:
•
•
•
1000BASE-SX
1000BASE-LX
1000BASE-LH
To install an SFP transceiver, do the following:
1. Consider network and cabling requirements to select an appropriate transceiver
type. Refer to “Connectivity Rules” on page 4-6.
2. Insert the transceiver with the optical connector facing outward and the slot
connector facing down. Note that SFP transceivers are keyed so they can only
be installed in one orientation.
3. Slide the transceiver into the slot until it clicks into place.
Note: SFP transceivers are hot-swappable. The switch does not need to be powered off
before installing or removing a transceiver. However, always first disconnect the
network cable before removing a transceiver.
Note: SFP transceivers are not provided in the switch package.
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Installing the Switch
3
Connecting to a Power Source
To connect a device to a power source:
1. Insert the power cable plug directly into the socket located at the back of the
device.
100-240V ~50-60Hz 1.5A
Figure 3-6 Power Socket
2. Plug the other end of the cable into a grounded, three-pin, AC power source.
Note: For international use, you may need to change the AC line cord. You must use
a line cord set that has been approved for the socket type in your country.
3. Check the front-panel LEDs as the device is powered on to be sure the Power
LED is on. If not, check that the power cable is correctly plugged in.
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Chapter 4: Making Network Connections
Connecting Network Devices
The switch units are designed to interconnect multiple segments (or collision
domains). It can be connected to network cards in PCs and servers, as well as to
hubs, switches or routers. It may also be connected to devices using optional SFP
transceivers.
If 802.3af-compliant PoE devices are connected to the switch’s 10/100 Mbps ports,
the switch automatically supplies the required power.
Twisted-Pair Devices
Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors
at both ends. Use Category 5, 5e or 6 cable for 1000BASE-T connections, Category
5 or better for 100BASE-TX connections, and Category 3 or better for 10BASE-T
connections.
Power-over-Ethernet Connections
The switch automatically detects an 802.3af-compliant device by its authenticated
PoE signature and senses its required load before turning on DC power to the port.
This detection mechanism prevents damage to other network equipment that is not
802.3af complaint.
Note: Power-over-Ethernet connections work with all existing Category 3, 4, 5, 5e or 6
network cabling, including patch cables and patch-panels, outlets, and other
connecting hardware, without requiring modification.
The switch delivers power to a device using wire pairs in the connecting Ethernet
cable. The switch can provide up to 15.4 W of power continuously on each 10/100
Mbps port. However, taking into account some power loss over the cable run, the
amount of power that can be delivered to a terminal device is 12.95 W. If a device
draws more than 15.4 W, from a port, an overload condition occurs and the port
turns off the power.
The switch controls the power and data on a port independently. Power can be
requested from a device that already has a data link to the switch. Also, the switch
can supply power to a device even if the port’s data connection has been disabled.
The power on a port is continuously monitored by the switch and it will be turned off
as soon as a device connection is removed.
4-1
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Making Network Connections
4
Cabling Guidelines
The RJ-45 ports on the switch support automatic MDI/MDI-X pinout configuration, so
you can use standard straight-through twisted-pair cables to connect to any other
network device (PCs, servers, switches, routers, or hubs).
See Appendix B: for further information on cabling.
Caution: Do not plug a phone jack connector into an RJ-45 port. This will
damage the switch. Use only twisted-pair cables with RJ-45 connectors that
conform to FCC standards.
Connecting to PCs, Servers, Hubs and Switches
1. Attach one end of a twisted-pair cable segment to the device’s RJ-45
connector.
Figure 4-1 Making Twisted-Pair Connections
2. If the device is a PC card and the switch is in the wiring closet, attach the other
end of the cable segment to a modular wall outlet that is connected to the wiring
other end to an available port on the switch.
Make sure each twisted pair cable does not exceed 100 meters (328 ft) in
length.
3. As each connection is made, the Link LED (on the switch) corresponding to
each port turns on to indicate that the connection is valid.
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Twisted-Pair Devices
4
Network Wiring Connections
Today, the punch-down block is an integral part of many of the newer equipment
racks. It is actually part of the patch panel. Instructions for making connections in the
wiring closet with this type of equipment follows.
1. Attach one end of a patch cable to an available port on the switch, and the other
end to the patch panel.
2. If not already in place, attach one end of a cable segment to the back of the
patch panel where the punch-down block is located, and the other end to a
modular wall outlet.
Equipment Rack
(side view)
Network Switch
w
h
0
/
4
L
7
Status
1
2
3
4
5
6
7
8
454
Punch-Down Block
Patch Panel
Wall
Figure 4-2 Wiring Closet Connections
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Making Network Connections
4
Fiber Optic SFP Devices
An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX or
1000BASE-LH) can be used for a backbone connection between switches, or for
connecting to a high-speed server.
Each single-mode fiber port requires 9/125 micron single-mode fiber optic cable with
an LC connector at both ends. Each multimode fiber optic port requires 50/125 or
62.5/125 micron multimode fiber optic cabling with an LC connector at both ends.
Warning: The switch use lasers to transmit signals over fiber optic cable. The lasers are
compliant with the requirements of a Class 1 Laser Product and are inherently
eye safe in normal operation. However, you should never look directly at a
transmit port when it is powered on.
Note: When selecting a fiber SFP device, considering safety, please make sure that it
can function at a temperature that is not less than the recommended maximum
operational temperature of the product. You must also use an approved Laser
Class 1 SFP transceiver.
Hinweis:Bei der Wahl eines Glasfasertransceivers muß für die Beurteilung der
Gesamtsicherheit beachtet werden, das die maximale Umgebungstemperatur
des Transceivers für den Betrieb nicht niedriger ist als die für dieses Produkts.
Der Glasfasertransceiver muß auch ein überprüftes Gerät der Laser Klasse 1
sein.
1. Remove and keep the LC port’s rubber cover. When not connected to a fiber
cable, the rubber cover should be replaced to protect the optics.
2. Check that the fiber terminators are clean. You can clean the cable plugs by
wiping them gently with a clean tissue or cotton ball moistened with a little
ethanol. Dirty fiber terminators on fiber cables will impair the quality of the light
transmitted through the cable and lead to degraded performance on the port.
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Fiber Optic SFP Devices
4
3. Connect one end of the cable to the LC port on the switch and the other end to
the LC port on the other device. Since LC connectors are keyed, the cable can
be attached in only one orientation.
Figure 4-3 Making Connections to SFP Transceivers
4. As a connection is made, check the Link LED on the switch corresponding to
the port to be sure that the connection is valid.
The 1000BASE-SX, 1000BASE-LX and 1000BASE-LH fiber optic ports operate at
1 Gbps full duplex. The maximum length for fiber optic cable operating at Gigabit
speed will depend on the fiber type as listed under “1000 Mbps Gigabit Ethernet
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Making Network Connections
4
Connectivity Rules
When adding hubs (repeaters) to your network, please follow the connectivity rules
listed in the manuals for these products. However, note that because switches break
up the path for connected devices into separate collision domains, you should not
include the switch or connected cabling in your calculations for cascade length
involving other devices.
1000BASE-T Cable Requirements
All Category 5 UTP cables that are used for 100BASE-TX connections should also
work for 1000BASE-T, providing that all four wire pairs are connected. However, it is
recommended that for all critical connections, or any new cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e specification includes test parameters that are only recommendations
for Category 5. Therefore, the first step in preparing existing Category 5 cabling for
running 1000BASE-T is a simple test of the cable installation to be sure that it
complies with the IEEE 802.3-2005 standards.
1000 Mbps Gigabit Ethernet Collision Domain
Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type
Maximum Cable Length
Connector
Category 5, 5e, 6 100-ohm UTP or STP
100 m (328 ft)
RJ-45
Table 4-2 Maximum 1000BASE-SX Fiber Optic Cable Length
Fiber Diameter
Fiber Bandwidth
160 MHz/km
Cable Length Range
2-220 m (7-722 ft)
2-275 m (7-902 ft)
2-500 m (7-1641 ft)
2-550 m (7-1805 ft)
Connector
62.5/125 micron multimode
fiber (MMF)
LC
LC
LC
LC
200 MHz/km
50/125 micron multimode fiber 400 MHz/km
(MMF)
500 MHz/km
Table 4-3 Maximum 1000BASE-LX Fiber Optic Cable Length
Fiber Diameter Fiber Bandwidth Cable Length Range
9/125 micron single-mode fiber N/A
Connector
2 m - 5 km
(7 ft - 3.2 miles)
LC
Table 4-4 Maximum 1000BASE-LH Fiber Optic Cable Length
Fiber Diameter
Fiber Bandwidth Cable Length Range
Connector
9/125 micron single-mode fiber N/A
2 m - 70 km
(7 ft - 43 miles)
LC
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Connectivity Rules
4
100 Mbps Fast Ethernet Collision Domain
Table 4-5 Maximum Fast Ethernet Cable Length
Type
Cable Type
Maximum Cable Length
Connector
100BASE-TX
Category 5 or better 100-ohm 100 m (328 ft)
UTP or STP
RJ-45
10 Mbps Ethernet Collision Domain
Table 4-6 Maximum Ethernet Cable Length
Connector
Type
Cable Type
Maximum Length
10BASE-T
Categories 3, 4, 5 or better
100-ohm UTP
100 m (328 ft)
RJ-45
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Making Network Connections
4
Cable Labeling and Connection Records
When planning a network installation, it is essential to label the opposing ends of
cables and to record where each cable is connected. Doing so will enable you to
easily locate inter-connected devices, isolate faults and change your topology
without need for unnecessary time consumption.
To best manage the physical implementations of your network, follow these
guidelines:
•
•
Clearly label the opposing ends of each cable.
Using your building’s floor plans, draw a map of the location of all
network-connected equipment. For each piece of equipment, identify the devices
to which it is connected.
•
•
Note the length of each cable and the maximum cable length supported by the
switch ports.
For ease of understanding, use a location-based key when assigning prefixes to
your cable labeling.
•
•
•
•
Use sequential numbers for cables that originate from the same equipment.
Differentiate between racks by naming accordingly.
Label each separate piece of equipment.
Display a copy of your equipment map, including keys to all abbreviations at each
equipment rack.
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Appendix A: Troubleshooting
Diagnosing Switch Indicators
Table A-1 Troubleshooting Chart
Symptom
Action
Power LED is Off
•
Check connections between the switch, the power cord, and the wall
outlet.
•
Contact our Technical Support.
Link LED is Off
•
•
Verify that the switch and attached device are powered on.
Be sure the cable is plugged into both the switch and corresponding
device.
•
•
•
If the switch is installed in a rack, check the connections to the
punch-down block and patch panel.
Verify that the proper cable type is used and its length does not exceed
specified limits.
Check the adapter on the attached device and cable connections for
possible defects. Replace the defective adapter or cable if necessary.
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in, you may
have a problem with the power outlet, power cord, or internal power supply.
However, if the unit powers off after running for a while, check for loose power
connections, power losses or surges at the power outlet. If you still cannot isolate
the problem, then the internal power supply may be defective.
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Troubleshooting
A
Installation
Verify that all system components have been properly installed. If one or more
components appear to be malfunctioning (such as the power cord or network
cabling), test them in an alternate environment where you are sure that all the other
components are functioning properly.
In-Band Access
You can access the management agent in the switch from anywhere within the
attached network using a Web browser, or other network management software
tools. However, you must first configure the switch with a valid IP address, subnet
mask, and default gateway. If you have trouble establishing a link to the
management agent, check to see if you have a valid network connection. Then
verify that you entered the correct IP address. Also, be sure the port through which
you are connecting to the switch has not been disabled. If it has not been disabled,
then check the network cabling that runs between your remote location and the
switch.
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Appendix B: Cables
Twisted-Pair Cable and Pin Assignments
For 10BASE-T/100BASE-TX connections, a twisted-pair cable must have two pairs
of wires. For 1000BASE-T connections the twisted-pair cable must have four pairs of
wires. Each wire pair is identified by two different colors. For example, one wire
might be green and the other, green with white stripes. Also, an RJ-45 connector
must be attached to both ends of the cable.
Caution:
Each wire pair must be attached to the RJ-45 connectors in a specific
orientation.
Caution:
DO NOT plug a phone jack connector into any RJ-45 port. Use only
twisted-pair cables with RJ-45 connectors that conform with FCC standards.
Figure B-1 illustrates how the pins on the RJ-45 connector are numbered. Be sure to
hold the connectors in the same orientation when attaching the wires to the pins.
8
8
1
1
Figure B-1 RJ-45 Connector Pin Numbers
10BASE-T/100BASE-TX Pin Assignments
Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45
connections: 100-ohm Category 3 or better cable for 10 Mbps connections, or
100-ohm Category 5 or better cable for 100 Mbps connections. Also be sure that the
length of any twisted-pair connection does not exceed 100 meters (328 feet).
The RJ-45 ports on the switch base unit support automatic MDI/MDI-X operation, so
you can use straight-through cables for all network connections to PCs or servers, or
to other switches or hubs. In straight-through cable, pins 1, 2, 3, and 6, at one end of
the cable, are connected straight through to pins 1, 2, 3, and 6 at the other end of
the cable. When using any RJ-45 port on the switch, you can use either
straight-through or crossover cable.
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Cables
B
Table B-1 10/100BASE-TX MDI-X and MDI Port Pinouts
Pin
MDI Signal Name
MDI-X Signal Name
1
Receive Data plus (RD+)
Transmit Data plus (TD+)
and GND (Positive V
)
and -48V feeding power (Negative V
)
)
port
port
2
Receive Data minus (RD-) and
and GND (Positive V
Transmit Data minus (TD-)
and -48V feeding power (Negative V
)
port
port
3
Transmit Data plus (TD+)
Receive Data plus (RD+)
and -48V feeding power (Negative V
)
)
and GND (Positive V
)
port
port
6
Transmit Data minus (TD-)
and -48V feeding power (Negative V
Receive Data minus (RD-)
and GND (Positive V
)
port
port
4, 5, 7, 8
Not used
Not used
Note: The “+” and “-” signs represent the polarity of the wires that make up each wire pair.
Straight-Through Wiring
If the twisted-pair cable is to join two ports and only one of the ports has an internal
crossover (MDI-X), the two pairs of wires must be straight-through. (When
auto-negotiation is enabled for any RJ-45 port on the switch, you can use either
straight-through or crossover cable to connect to any device type.)
You must connect all four wire pairs as shown in the following diagram to support
Gigabit Ethernet connections.
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Straight-through Cable
White/Orange Stripe
Orange
White/Green Stripe
Blue
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
End A
End B
White/Blue Stripe
Green
White/Brown Stripe
Brown
Figure B-2 Straight-through Wiring
Crossover Wiring
If the twisted-pair cable is to join two ports and either both ports are labeled with an
“X” (indicating MDI-X) or neither port is labeled with an “X” (which indicates MDI), a
crossover must be implemented in the wiring. (When auto-negotiation is enabled for
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Twisted-Pair Cable and Pin Assignments
B
any RJ-45 port on the switch, you can use either straight-through or crossover cable
to connect to any device type.)
You must connect all four wire pairs as shown in the following diagram to support
Gigabit Ethernet connections.
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Crossover Cable
White/Orange Stripe
Orange
White/Green Stripe
Blue
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
End A
End B
White/Blue Stripe
Green
White/Brown Stripe
Brown
Figure B-3 Crossover Wiring
1000BASE-T Pin Assignments
All 1000BASE-T ports support automatic MDI/MDI-X operation, so you can use
straight-through cables for all network connections to PCs or servers, or to other
switches or hubs.
The table below shows the 1000BASE-T MDI and MDI-X port pinouts. These ports
require that all four pairs of wires be connected. Note that for 1000BASE-T
operation, all four pairs of wires are used for both transmit and receive.
Use 100-ohm Category 5, 5e or 6 unshielded twisted-pair (UTP) or shielded
twisted-pair (STP) cable for 1000BASE-T connections. Also be sure that the length
of any twisted-pair connection does not exceed 100 meters (328 feet).
Table B-2 1000BASE-T MDI-X and MDI Port Pinouts
1000BASE-T MDI-X and MDI Port Pinouts
Pin
1
MDI-X Signal Name
MDI Signal Name
Bi-directional Data Two Plus (BI_D2+)
Bi-directional Data Two Minus (BI_D2-)
Bi-directional Data One Plus (BI_D1+)
Bi-directional Data Four Plus (BI_D4+)
Bi-directional Data Four Minus (BI_D4-)
Bi-directional Data One Plus (BI_D1+)
Bi-directional Data One Minus (BI_D1-)
Bi-directional Data Two Plus (BI_D2+)
Bi-directional Data Three Plus (BI_D3+)
Bi-directional Data Three Minus (BI_D3-)
2
3
4
5
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Cables
B
1000BASE-T MDI-X and MDI Port Pinouts
Pin
MDI-X Signal Name
MDI Signal Name
6
7
8
Bi-directional Data One Minus (BI_D1-)
Bi-directional Data Three Plus (BI_D3+)
Bi-directional Data Three Minus (BI_D3-)
Bi-directional Data Two Minus (BI_D2-)
Bi-directional Data Four Plus (BI_D4+)
Bi-directional Data Four Minus (BI_D4-)
Cable Testing for Existing Category 5 Cable
Installed Category 5 cabling must pass tests for Attenuation, Near-End Crosstalk
(NEXT), and Far-End Crosstalk (FEXT). This cable testing information is specified in
the ANSI/TIA/EIA-TSB-67 standard. Additionally, cables must also pass test
parameters for Return Loss and Equal-Level Far-End Crosstalk (ELFEXT). These
tests are specified in the ANSI/TIA/EIA-TSB-95 Bulletin, “The Additional
Transmission Performance Guidelines for 100 Ohm 4-Pair Category 5 Cabling.”
Note that when testing your cable installation, be sure to include all patch cables
between switches and end devices.
Adjusting Existing Category 5 Cabling to Run 1000BASE-T
If your existing Category 5 installation does not meet one of the test parameters for
1000BASE-T, there are basically three measures that can be applied to try and
correct the problem:
1. Replace any Category 5 patch cables with high-performance Category 5e or
Category 6 cables.
2. Reduce the number of connectors used in the link.
3. Reconnect some of the connectors in the link.
Fiber Standards
The current TIA (Telecommunications Industry Association) 568-A specification on
optical fiber cabling consists of one recognized cable type for horizontal subsystems
and two cable types for backbone subsystems.
Horizontal 62.5/125 micron multimode (two fibers per outlet).
Backbone 62.5/125 micron multimode or single mode.
TIA 568-B will allow the use of 50/125 micron multimode optical fiber in both the
horizontal and backbone in addition to the types listed above. All optical fiber
components and installation practices must meet applicable building and safety
codes.
B-4
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Appendix C: Specifications
Physical Characteristics
Ports
8 10/100/1000BASE-T, with auto-negotiation
1 SFP transceiver slot.
Network Interface
Ports 1-8: RJ-45 connector, auto MDI/X
10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better)
100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better)
1000BASE-T: RJ-45 (100-ohm, UTP or STP cable; Category 5, 5e, or 6)
*Maximum Cable Length - 100 m (328 ft)
Buffer Architecture
144 Kbytes
Aggregate Bandwidth
16 Gbps
Switching Database
4K MAC address entries
LEDs
System: Power
Port: Link/Act; Status for SFP ports; PoE
Weight
2.06 kg (4.54 lbs)
Size
33.0 x 20.3 x 4.4 cm (12.99 x 7.99 x 1.73 in.)
Temperature
Operating: 0 to 45 °C (32 to 114 °F)
Storage: -40 to 70 °C (-40 to 158 °F)
Humidity
Operating: 10% to 90% (non-condensing)
C-1
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Specifications
C
AC Input
100 to 240 V, 50-60 Hz, 1.5 A
Power-over-Ethernet
Input voltage: 48 V DC
Maximum output power 70 W:
15.4 W for any four ports simultaneously
port 1 can provide 25 W
Maximum output current per port: 350 mA DC
port 1 can reach: 565 mA DC
Output Voltage: 44 - 57 V DC
Maximum output current per port: 350 mA DC
Power Supply
Internal, auto-ranging transformer: 100 to 240 VAC, 50 to 60 Hz
Power Consumption
165 W maximum (full PoE load)
Maximum Current
1.5 A @ 110 VAC
0.75 A @ 220 VAC
Switch Features
Forwarding Mode
Store-and-forward
Throughput
Wire speed
Management Features
In-Band Management
Web and SNMP
Software Loading
HTTP in-band
C-2
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Standards
C
Standards
IEEE 802.3-2005
Ethernet, Fast Ethernet, Gigabit Ethernet
IEEE 802.3af Power-over-Ethernet
IEEE 802.1D Spanning Tree Protocol
IEEE D802.1Q Virtual LAN
IEEE 802.1X, Port-Based Network Access Control, 2001
ISO/IEC 8802-3
Compliances
CE Mark
Emissions
FCC Class A
Immunity
EN 61000-4-2/3/4/5/6/8/11
Safety
CB (IEC60950-1, EN60950-1)
C-3
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Specifications
C
C-4
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Glossary
10BASE-T
IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3 or better
UTP cable.
100BASE-TX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two pairs of Category 5
or better UTP cable.
1000BASE-LH
Specification for long-haul Gigabit Ethernet over two strands of 9/125 micron core
fiber cable.
1000BASE-LX
IEEE 802.3z specification for Gigabit Ethernet over two strands of
50/125, 62.5/125 or 9/125 micron core fiber cable.
1000BASE-SX
IEEE 802.3z specification for Gigabit Ethernet over two strands of
50/125 or 62.5/125 micron core fiber cable.
1000BASE-T
IEEE 802.3ab specification for Gigabit Ethernet over 100-ohm Category 5 or 5e
twisted-pair cable (using all four wire pairs).
Auto-Negotiation
Signalling method allowing each node to select its optimum operational mode (e.g.,
speed and duplex mode) based on the capabilities of the node to which it is
connected.
Bandwidth
The difference between the highest and lowest frequencies available for network
signals. Also synonymous with wire speed, the actual speed of the data
transmission along the cable.
Collision
A condition in which packets transmitted over the cable interfere with each other.
Their interference makes both signals unintelligible.
Collision Domain
Single CSMA/CD LAN segment.
Glossary-1
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Glossary
CSMA/CD
CSMA/CD (Carrier Sense Multiple Access/Collision Detect) is the communication
method employed by Ethernet, Fast Ethernet, or Gigabit Ethernet.
End Station
A workstation, server, or other device that does not forward traffic.
Ethernet
A network communication system developed and standardized by DEC, Intel, and
Xerox, using baseband transmission, CSMA/CD access, logical bus topology, and
coaxial cable. The successor IEEE 802.3 standard provides for integration into the
OSI model and extends the physical layer and media with repeaters and
implementations that operate on fiber, thin coax and twisted-pair cable.
Fast Ethernet
A 100 Mbps network communication system based on Ethernet and the CSMA/CD
access method.
Full Duplex
Transmission method that allows two network devices to transmit and receive
concurrently, effectively doubling the bandwidth of that link.
Gigabit Ethernet
A 1000 Mbps network communication system based on Ethernet and the CSMA/CD
access method.
IEEE
Institute of Electrical and Electronic Engineers.
IEEE 802.3
Defines carrier sense multiple access with collision detection (CSMA/CD) access
method and physical layer specifications.
IEEE 802.3ab
Defines CSMA/CD access method and physical layer specifications for
1000BASE-T Gigabit Ethernet. (Now incorporated in IEEE 802.3-2005.)
IEEE 802.3u
Defines CSMA/CD access method and physical layer specifications for
100BASE-TX Fast Ethernet. (Now incorporated in IEEE 802.3-2005.)
Glossary-2
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Glossary
IEEE 802.3x
Defines Ethernet frame start and stop requests and timers used for flow control on
full-duplex links. (Now incorporated in IEEE 802.3-2005.)
IEEE 802.3z
Defines CSMA/CD access method and physical layer specifications for 1000BASE
Gigabit Ethernet. (Now incorporated in IEEE 802.3-2005.)
LAN Segment
Separate LAN or collision domain.
Layer 2
Data Link layer in the ISO 7-Layer Data Communications Protocol. This is related
directly to the hardware interface for network devices and passes on traffic based on
MAC addresses.
LED
Light emitting diode used for monitoring a device or network condition.
Link Segment
Length of twisted-pair or fiber cable joining a pair of repeaters or a repeater and a
PC.
Local Area Network (LAN)
A group of interconnected computers and support devices.
Management Information Base (MIB)
An acronym for Management Information Base. It is a set of database objects that
contains information about the device.
Media Access Control (MAC)
A portion of the networking protocol that governs access to the transmission
medium, facilitating the exchange of data between network nodes.
Modal Bandwidth
Bandwidth for multimode fiber is referred to as modal bandwidth because it varies
with the modal field (or core diameter) of the fiber. Modal bandwidth is specified in
units of MHz per km, which indicates the amount of bandwidth supported by the fiber
for a one km distance.
Network Diameter
Wire distance between two end stations in the same collision domain.
Glossary-3
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Glossary
Redundant Power Supply (RPS)
A backup power supply unit that automatically takes over in case the primary power
supply should fail.
RJ-45 Connector
A connector for twisted-pair wiring.
Switched Ports
Ports that are on separate collision domains or LAN segments.
TIA
Telecommunications Industry Association
Transmission Control Protocol/Internet Protocol (TCP/IP)
Protocol suite that includes TCP as the primary transport protocol, and IP as the
network layer protocol.
UTP
Unshielded twisted-pair cable.
Virtual LAN (VLAN)
A Virtual LAN is a collection of network nodes that share the same collision domain
regardless of their physical location or connection point in the network. A VLAN
serves as a logical workgroup with no physical barriers, allowing users to share
information and resources as though located on the same LAN.
Glossary-4
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Index
Numerics
D
1000BASE-T
E
ports 1-3
100BASE-TX
F
features C-2
management 1-5
ports 1-3
10BASE-T/100BASE-TX pin
assignments B-1
G
A
applications
I
B
installation
problems A-2
C
cable
lengths 4-7
connectivity rules
L
LED indicators
Power 1-4
problems A-1
Index-1
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Index
M
management
agent 1-2
T
troubleshooting
SNMP 1-2
mounting the switch
N
V
network
VLANs
connections 4-1
examples 2-2
tagging 2-4
P
1000BASE-T B-3
100BASE-TX/10BASE-T B-1
R
connections 4-1
pinouts B-3
S
specifications
compliances C-2
environmental C-1
physical C-1
power C-2
standards
IEEE C-3
Index-2
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JAN/2008/ISSUE 1.0
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