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Gigabit Ethernet Switch
Installation Guide
Installation Guide
Gigabit Ethernet Switch
Layer 3 Workgroup Switch with 8 SFP Ports,
and 4 Gigabit Combination (RJ-45/SFP) Ports
ES4612
E092004-R01
150000046300A
Compliances
FCC - Class A
This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause interference to
radio communications. It has been tested and found to comply with the limits for a Class A
computing device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to
provide reasonable protection against such interference when operated in a commercial
environment. Operation of this equipment in a residential area is likely to cause
interference, in which case the user, at his own expense, will be required to take whatever
measures may be required to correct the interference. 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, and 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.
Warnings: 1. Wear an anti-static wrist strap or take other suitable measures to prevent
electrostatic discharge when handling this equipment.
2. When connecting this hub 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.
Industry Canada - Class A
This digital apparatus does not exceed the Class A limits for radio noise emissions from
digital apparatus as set out in the interference-causing equipment standard entitled
“Digital Apparatus,” ICES-003 of the Department of Communications.
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux
appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur:
“Appareils Numériques,” NMB-003 édictée par le ministère des Communications.
Japan VCCI Class A
i
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 (A1/1992; A2/1993; A3/1993; A4/1995; A11/1997)
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!
Australia AS/NZS 3548 (1995) - Class A
ACN 066 352 010
ii
Safety Compliance
Warning: Fiber Optic Port Safety
CLASS I
LASER DEVICE
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.
Avertissment: Ports pour fibres optiques - sécurité sur le plan optique
DISPOSITIF LASER
DE CLASSE I
Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez
jamais directement le port TX (Transmission) à fibres optiques et les
embouts de câbles à fibres optiques tant qu'ils sont sous tension.
Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit
LASERGER
DER KLASSE I
Niemals ein Übertragungslaser betrachten, während dieses
ÄT
eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß
und auf die Faserkabelenden schauen, während diese
eingeschaltet sind.
Please read the following safety information carefully before
installing the 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
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
†
supplies. If your supplies are of IT type, this unit
iii
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
Switzerland The supply plug must comply with SEV/ASE 1011.
U.K. The supply plug must comply with BS1363 (3-pin 13 A) and be fitted
Europe The supply plug must comply with CEE7/7 (“SCHUKO”).
DK2-1a or DK2-5a.
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).
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
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:
Danemark: La prise mâle d’alimentation doit respecter la section 107-2 D1 de la
Suisse: La prise mâle d’alimentation doit respecter la norme SEV/ASE 1011.
Europe La prise secteur doit être conforme aux normes CEE 7/7 (“SCHUKO”)
Le cordon doit avoir reçu l’homologation des UL et un certificat de la
CSA.
Les spe'cifications minimales pour un cable flexible sont AWG No.
18, ouAWG No. 16 pour un cable de longueur infe'rieure a` 2 me'tres.
- type SV ou SJ
- 3 conducteurs
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).
norme DK2 1a ou DK2 5a.
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
Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:
Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalt-
Europe Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung)
en.
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
Warning: This switch uses lasers to transmit signals over fiber optic cable. The lasers
Caution: Do not plug a phone jack connector in the RJ-45 port. This may damage this
Caution: Use only twisted-pair cables with RJ-45 connectors that conform to FCC
Caution: Wear an anti-static wrist strap or take other suitable measures to prevent
on the tri-pole power plug to a valid earth ground line to prevent electrical
hazards.
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.
device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!
standards.
electrostatic discharge when handling this equipment.
vi
Environmental Statement
The manufacturer of this product endeavours to sustain an environmentally-friendly policy
throughout the entire production process. This is achieved though 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 the switch, including its physical and
performance-related characteristics, and how to install the switch.
Related Publications
The following publication gives specific information on how to operate and use the
management functions of the switches:
The Gigabit Ethernet Switch Management Guide
Also, as part of both switches’ firmware, there is an online web-based help that describes
all management related features.
vii
viii
Contents
Chapter 1: Introduction 1-1
Overview 1-1
Switch Architecture 1-1
Management Options 1-2
Description of Hardware 1-2
SFP Slots 1-2
1000BASE-T Ports 1-2
Status LEDs 1-3
Optional Redundant Power Unit 1-4
Power Supply Receptacles 1-4
Features and Benefits 1-5
Connectivity 1-5
Expandability 1-5
Performance 1-5
Management 1-5
Chapter 2: Network Planning 2-1
Introduction to Switching 2-1
Application Examples 2-2
Collapsed Backbone 2-2
Network Aggregation Plan 2-3
Remote Connections with Fiber Cable 2-4
Making VLAN Connections 2-5
Using Layer 3 Routing 2-6
Application Notes 2-7
Chapter 3: Installing the Switch 3-1
Selecting a Site 3-1
Ethernet Cabling 3-1
Equipment Checklist 3-2
Package Contents 3-2
Optional Rack-Mounting Equipment 3-2
Mounting 3-3
Rack Mounting 3-3
Desktop or Shelf Mounting 3-4
Installing an Optional SFP Transceiver 3-5
Connecting to a Power Source 3-6
Connecting to the Console Port 3-7
Wiring Map for Serial Cable 3-7
ix
Contents
Chapter 4: Making Network Connections 4-1
Connecting Network Devices 4-1
Fiber Optic SFP Devices 4-1
Twisted-Pair Devices 4-2
Cabling Guidelines 4-2
Connecting to PCs, Servers, Hubs and Switches 4-3
Network Wiring Connections 4-3
Connectivity Rules 4-4
1000BASE-T Cable Requirements 4-4
1000 Mbps Gigabit Ethernet Collision Domain 4-5
100 Mbps Fast Ethernet Collision Domain 4-5
10 Mbps Ethernet Collision Domain 4-5
Cable Labeling and Connection Records 4-6
Appendix A: Troubleshooting A-1
Diagnosing Switch Indicators A-1
Power and Cooling Problems A-1
Installation A-1
In-Band Access A-2
Appendix B: Cables B-1
Twisted-Pair Cable and Pin Assignments B-1
10/100BASE-TX Pin Assignments B-1
Straight-Through Wiring B-2
Crossover Wiring B-2
1000BASE-T Pin Assignments B-3
Fiber Standards B-4
Appendix C: Specifications C-1
Physical Characteristics C-1
Switch Features C-2
Management Features C-2
Standards C-2
Compliances C-3
Glossary
Index
x
Tables
Table 1-1 Port Status LEDs 1-3
Table 1-2 System Status LEDs 1-4
Table 3-1 Serial Cable Wiring 3-7
Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length 4-5
Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length 4-5
Table 4-3 Maximum 1000BASE-LX Gigabit Ethernet Cable Length 4-5
Table 4-4 Maximum 1000BASE-LH Gigabit Ethernet Cable Length 4-5
Table 4-5 Maximum Fast Ethernet Cable Length 4-5
Table 4-6 Maximum Ethernet Cable Length 4-5
Table A-1 Troubleshooting Chart A-1
Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts B-2
Table B-2 1000BASE-T MDI and MDI-X Port Pinouts B-3
xi
Figures
Figure 1-1 Front and Rear Panels 1-1
Figure 1-2 Port LEDs 1-3
Figure 1-3 System LEDs 1-4
Figure 1-4 Power Supply Receptacles 1-4
Figure 2-1 Collapsed Backbone 2-2
Figure 2-2 Network Aggregation Plan 2-3
Figure 2-3 Remote Connection with Fiber Cable 2-4
Figure 2-4 Making VLAN Connections 2-5
Figure 2-5 IP Routing for Unicast Traffic 2-6
Figure 3-1 RJ-45 Connections 3-2
Figure 3-2 Attaching the Brackets 3-3
Figure 3-3 Installing the Switch in a Rack 3-4
Figure 3-4 Attaching the Adhesive Feet 3-4
Figure 3-5. Inserting an SFP Transceiver into a Slot 3-5
Figure 3-6 Power Receptacle 3-6
Figure 3-7 Serial Port (DB-9 DTE) Pin-Out 3-7
Figure 4-1 Making LC Port Connections 4-2
Figure 4-2 Making Twisted-Pair Connections 4-3
Figure 4-3 Wiring Closet Connections 4-4
Figure B-1 RJ-45 Connector Pin Numbers B-1
Figure B-2 Straight-through Wiring B-2
Figure B-3 Crossover Wiring B-3
xii
Chapter 1: Introduction
Overview
The ES4612
Gigabit Ethernet switch
has 12 Small Form Factor Pluggable (SFP)
transceiver slots, four of which are combination ports that are shared with 4 10/100/
1000BASE-T ports.
There is also an SNMP-based management agent embedded on the main board. This
agent supports both in-band and out-of-band access for managing the switch.
This switch can easily tame your network with full support for Spanning Tree
Protocol, Multicast Switching, Virtual LANs, and IP routing. It brings order to poorly
performing networks by segregating them into separate broadcast domains with
IEEE 802.1Q compliant VLANs, empowers multimedia applications with multicast
switching and CoS services, and eliminates conventional router bottlenecks.
It can be used to augment or completely replace slow legacy routers,
off-loading local
IP traffic to release valuable resources for non-IP routing or WAN access. With
wire-speed performance for Layer 2, Layer 3 and Layer 4, this switch can
significantly improve the throughput between IP segments or VLANs.
SFP Slots
Power Socket Redundant Power Socket
1000BASE-T/SFP Combination Ports
Port Status Indicators
System Indicators
Console Port
Figure 1-1 Front and Rear Panels
Switch Architecture
The ES4612 employs a wire-speed, non-blocking switching fabric. This permits
simultaneous wire-speed transport of multiple packets at low latency on all ports.
This switch also features full-duplex capability on all ports, which effectively doubles
the bandwidth of each connection.
Switching Method
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.
1-1
Introduction
1
Management Options
This switch contains a comprehensive array of LEDs for “at-a- glance” monitoring of
network and port status. It also includes a built-in network management agent that
allows the switch to be managed in-band using SNMP or RMON (Groups 1, 2, 3 and
9) protocols, with a Web browser, or remotely via Telnet. It provides an RS-232 serial
port (DB-9 connector) on the front panel for out-of-band management. A PC may be
connected to this port
cable. (See Appendix B for wiring options.)
For a detailed description of the advanced features, refer to the Management Guide.
for configuration and monitoring out-of band via a
null-modem
Description of Hardware
SFP Slots
The ES4612 contains 12 Small Form Factor Pluggable (SFP) transceiver slots, four
of which are shared with RJ-45 ports 9-12. In its default configuration, if an SFP
transceiver (purchased separately) is installed in a slot and has a valid link on its
port, the associated RJ-45 port is disabled and cannot be used. The switch can also
be configured to force the use of an RJ-45 port or SFP slot, as required.
1000BASE-T Ports
The ES4612 contains four RJ-45 ports that are shared with SFP slots 9-12. These
RJ-45 ports operate at 10 Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps,
full duplex. Because all RJ-45 ports on this 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 Assignments” on page
B-3.)
Each of these ports support auto-negotiation, so the optimum transmission mode
(half or full duplex), and data rate (10, 100, 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.
Each port also supports auto-negotiation of flow control, so the switch can
automatically prevent port buffers from becoming saturated.
1-2
Description of Hardware
Link
Act
Link
Act
Power
RPU
Diag
!
Console
1
Status LEDs
The LEDs, which are located on the front panel for easy viewing, are shown below
and described in the following table.
10 M
100/1000 M
Port Link
Figure 1-2 Port LEDs
Table 1-1 Port Status LEDs
LED Condition Status
Ports 1~12
Link On Green An SFP transceiver port has established a valid network
connection.
Off An SFP transceiver port has no valid link or there is no
transceiver installed in the slot.
Act Flashing Green Traffic is passing through the port.
1000BASE-T Ports (Ports 9~12)
100/1000 M On Green Port has established a valid 1000 Mbps network
On Amber Port has established a valid 100 Mbps network
connection.
connection.
Off There is no valid link on the port.
10 M On Amber Port has established a valid 10 Mbps network
connection.
Off There is no valid link on the port.
Port Activity
1-3
1
Link
Act
Link
Act
Power
RPU
Diag
!
Console
90-240~ 50-60HZ 2A
RPU
Introduction
Power Indicator
Diagnostic Indicator
Redundant Power
Error Indicator
Figure 1-3 System LEDs
Table 1-2 System Status LEDs
LED Condition Status
Power On Green The unit’s internal power supply is operating normally.
Off The unit has no power connected.
RPU On Green The redundant power supply is operating normally.
Off No redundant power supply is connected.
Diag On Green The system diagnostic test has completed successfully.
Flashing Green The system diagnestic test is in progress.
!
On Orange An error condition has been detected on the switch. Either
the system diagnostic test has failed, the power supply has
failed, or one of the two cooling fans has failed.
Off The system is operating normally.
Optional Redundant Power Unit
The switch supports an optional Redundant Power Unit (RPU), that can supply
power to the switch in the event of failure of the internal power supply.
Power Supply Receptacles
There are two power receptacles on the rear panel of the switch. The standard
power receptacle is for the AC power cord. The receptacle labeled “RPU” is for the
optional Redundant Power Unit (RPU).
1-4
Power Socket
Figure 1-4 Power Supply Receptacles
Redundant Power Socket
Features and Benefits
1
Features and Benefits
Connectivity
• 12 Small Form Factor Pluggable (SFP) transceiver slots.
• Four 10/100/1000BASE-T Gigabit Ethernet ports that are shared with four of the
Small Form Factor Pluggable (SFP) transceiver slots.
• 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.
• Independent RJ-45 10/100/1000BASE-T ports with 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, or 6 for 1000 Mbps connections.
• IEEE 802.3 Ethernet, 802.3u Fast Ethernet, 802.3z and 802.3ab Gigabit Ethernet
compliance ensures compatibility with standards-based hubs, network cards and
switches from any vendor.
Expandability
• Supports 1000BASE-SX and 1000BASE-LX, 1000BASE-LH and other
SFP-compatible transceivers.
Performance
• Transparent bridging
• Aggregate bandwidth of up to 24 Gbps
• Switching table with a total of 16K MAC address entries and 4K IP address entries
• Provides store-and-forward switching for intra-VLAN traffic, and IP routing for
inter-VLAN traffic
• Supports wire-speed switching at Layer 2, and wire-speed routing at Layer 3
• Supports flow control, using back pressure for half duplex and IEEE 802.3x for full
duplex
• Broadcast storm control
• Desktop or rack-mountable
Management
• “At-a-glance” LEDs for easy troubleshooting
• Network management agent:
• Manages switch in-band or out-of-band
• Supports Telnet, SNMP/RMON and Web-based interface
1-5
1
Introduction
1-6
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 maximum distance
between end stations is limited. For Ethernet, there may be up to four hubs between
any pair of stations; for Fast Ethernet, the maximum is two. This is known as the 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 network to significantly boost bandwidth
while using conventional cabling and network cards.
2-1
Network Planning
2
Application Examples
The ES4612 Gigabit Ethernet 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 in the following pages.
Collapsed Backbone
The ES4612 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 12 workstations or servers. When the time comes for further network expansion,
you can easily build on this basic configuration by adding Fast Ethernet or Gigabit
Ethernet links directly to one or more workgroup switches.
In the figure below, this switch is operating as a collapsed backbone for a small LAN.
It is providing dedicated full-duplex Gigabit connections to workstations, power
users, and servers.
2-2
Layer3 standalone Gigabit Switch
...
Servers
1Gbps
Full Duplex
...
Workstations
1Gbps
Full Duplex
Figure 2-1 Collapsed Backbone
Power
Link
Act
RPU
Diag
Link
Act
!
Console
...
Application Examples
2
Network Aggregation Plan
With 12 parallel bridging ports (i.e., 12 distinct collision domains), the ES4612 can
collapse a complex network down into a single efficient bridged node, increasing
overall bandwidth and throughput.
In the figure below, the SFP ports on the switch are providing 1 Gbps full-duplex
connections for up to 12 local segments. In addition, the switch is also connecting
remote servers over fiber optic cable at 1 Gbps.
10/100/1000 Switch
Fast Ethernet Switch Stack
.
.
.
.
.
.
...
Layer3 standalone Gigabit Switch
Link
Act
Link
Act
Fast Ethernet Switch Stack
1
ES3526F
1
ES3526F
.
.
.
.
.
.
10/100 Mbps Segments
...
Figure 2-2 Network Aggregation Plan
Power
RPU
Diag
!
Console
Server Farm
1
ES3526F
1
ES3526F
2-3
Network Planning
25
26
Clear
Reset
Self
Test
Fan
Status
Link
Act
Link
Act
Console
Power
Fault
25
26
Clear
Reset
Self
Test
Fan
Status
Link
Act
Link
Act
Console
Power
Fault
2
Remote Connections with Fiber Cable
Fiber optic technology allows for longer cabling than any other media type. A
1000BASE-SX (MMF) link can connect to a site up to 550 meters away, a
1000BASE-LX (SMF) link up to 5 km, and a 1000BASE-LH link up to 70 km. This
allows a Gigabit Ethernet Switch to serve as a collapsed backbone, providing direct
connectivity for a widespread LAN.
A 1000BASE-SX SFP transceiver can be used for a high-speed connection between
floors in the same building, a 1000BASE-LX SFP can be used to connect to other
buildings in a campus setting, and a 1000BASE-LH SFP transceiver can be used for
a long-haul connection to a remote site.
The figure below illustrates a Gigabit Ethernet switch connecting multiple segments
with fiber cable.
Layer3 standalone Gigabit Switch
1000BASE-SXMMF
(500 m)
Server Farm
Remote Switch Remote Switch
1
2
3
4
5
6
13
14
15
16
17
12 3 4 5 6 13 14 15 16 1718
2526
Link
25
26
Act
Console
Link
Act
Power
7 8 9 10 11 12 19 2021 22 2324
Fault
Self
Fan
Reset
Clear
Test
Status
18
8
9
10
11
12
7
20
21
22
23
24
19
12 3 4 5 6 13 14 15 16 1718
2526
Console
Power
7 8 9 10 11 12 19 2021 22 2324
Fault
Self
Reset
Clear
Test
10/100/1000 Mbps Segments
...
Figure 2-3 Remote Connection with Fiber Cable
Power
Link
Act
RPU
Diag
Link
Act
!
Console
1000BASE-LX SMF
(5 kilometers)
1
2
3
4
5
6
13
14
15
16
17
Link
25
26
Act
Link
Act
Fan
Status
18
8
9
10
11
12
7
20
21
22
23
24
19
...
2-4
Application Examples
2
Making VLAN Connections
This switch supports VLANs which 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 VLANs assigned to the inter-switch links.
This switch also supports multiple spanning trees which allow VLAN groups to
maintain a more stable path between all VLAN members. This can reduce the
overall amount of protocol traffic crossing the network, and provide a shorter
reconfiguration time when any link in the spanning tree fails.
R&D
Testing
VLAN 1
VLAN 2
Tagged
Ports
Finance
VLAN 3
Layer3 standalone Gigabit Switch
VLAN 4
Untagged Ports
Marketing
VLAN
unaware
switch
Finance
VLAN 3
Tagged Port
Link
Act
Link
Act
VLAN 1
R&D
VLAN 2
Power
RPU
Diag
!
Console
VLAN
aware
switch
Testing
Figure 2-4 Making VLAN Connections
Note: When connecting to a switch that does not support IEEE 802.1Q VLAN tags, use
untagged ports.
2-5
Network Planning
2
Using Layer 3 Routing
VLANs can significantly enhance network performance and security. However, if you
use conventional routers to interconnect VLANs, you can lose most of your
performance advantage. The Gigabit Ethernet Routing Switch provides wire-speed
routing, which allows you to eliminate your conventional IP routers, except for a
router to handle non-IP protocols and a gateway router linked to the WAN. Just
assign an IP address to any VLANs that need to communicate. The switch will
continue to segregate Layer 2 traffic based on VLANs, but will now provide
inter-VLAN connections for IP applications. This switch will perform IP routing for
specified VLAN groups, a directly connected subnetwork, a remote IP subnetwork or
host address, a subnetwork broadcast address, a switch IP address on a specific IP
subnetwork, or an IP multicast address.
VLAN 1
Layer3 standalone Gigabit Switch
R&D
Testing
VLAN 2
IP Network 1
Figure 2-5 IP Routing for Unicast Traffic
Link
Act
Link
Act
IP Network 2
Power
RPU
Diag
!
Console
2-6
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. Avoid using flow control on a port connected to a hub unless it is actually
required to solve a problem. Otherwise back pressure jamming signals may
degrade overall performance for the segment attached to the hub.
3. For network applications that require routing between dissimilar network types,
you can attach this switch directly to a router.
4. 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 (3.2 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.
2-7
Network Planning
2
2-8
Chapter 3: Installing the Switch
Selecting a Site
Switches 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 50 °C (32 to 122 °F) and its
humidity within 5% to 95%, non-condensing.
• provide adequate space (approximately 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 a separate grounded power outlet that provides 100 to 240 VAC,
50 to 60 Hz, is within 2.44 m (8 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 switch 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 or better 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
3-1
Installing the Switch
3
RJ-45 Connector
Figure 3-1 RJ-45 Connections
Equipment Checklist
After unpacking the switch, 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
• ES4612 Gigabit Ethernet 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
• RS-232 console cable
• This Installation Guide
• Management Guide
Optional Rack-Mounting Equipment
If you plan to rack-mount the switch, 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)
3-2
Mounting
3
Mounting
This switch can be mounted in a standard 19-inch equipment rack or on a desktop or
shelf. Mounting instructions for each type of site follow.
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
within the specified operating temperature range. (See page C-1.)
• 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
3-3
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
3. If installing a single switch only, turn to “Connecting to a Power Source” at the
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.
Figure 3-4 Attaching the Adhesive Feet
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.
3-4
Installing an Optional SFP Transceiver
3. If installing a single switch only, go to “Connecting to a Power Source” at the
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.
3
Installing an Optional SFP Transceiver
Figure 3-5. Inserting an SFP Transceiver into a Slot
This switch supports 1000BASE-SX and 1000BASE-LX, 1000BASE-LH and other
SFP-compatible transceivers. To install an SFP transceiver, do the following:
1. Consider network and cabling requirements to select an appropriate SFP
transceiver type.
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 SFP transceiver into the slot until it clicks into place.
Note: SFP transceivers are hot-swapable. 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.
3-5
Installing the Switch
90-240~ 50-60HZ 2A
RPU
3
Connecting to a Power Source
To connect a device to a power source:
1. Insert the power cable plug directly into the receptacle located at the back of
the device.
Figure 3-6 Power Receptacle
2. Plug the other end of the cable into a grounded, 3-pin socket.
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 receptacle type in your country.
3. Check the front-panel LEDs as the device is powered on to be sure the Power
LED is lit. If not, check that the power cable is correctly plugged in.
4. If you have purchased a Redundant Power Unit, connect it to the device and to
an AC power source now, following the instructions included with the package.
3-6
Connecting to the Console Port
3
Connecting to the Console Port
The DB-9 serial port on the switch’s front panel is used to connect to the switch for
out-of-band console configuration. The on-board configuration program can be
accessed from a terminal or a PC running a terminal emulation program. The pin
assignments used to connect to the serial port are provided in the following tables.
1
5
6 9
Figure 3-7 Serial Port (DB-9 DTE) Pin-Out
Wiring Map for Serial Cable
Table 3-1 Serial Cable Wiring
Switch’s 9-Pin
Serial Port
2 RXD (receive data) <---------------------------- 3 TXD (transmit data)
3 TXD (transmit data) -----------------------------> 2 RXD (receive data)
5 SGND (signal ground) ------------------------------ 5 SGND (signal ground)
No other pins are used.
Null Modem PC’s 9-Pin
DTE Port
The serial port’s configuration requirements are as follows:
• Default Baud rate—9,600 bps
• Character Size—8 Characters
• Parity—None
• Stop bit—One
• Data bits—8
3-7
Installing the Switch
3
3-8
Chapter 4: Making Network Connections
Connecting Network Devices
The ES4612 is designed to interconnect multiple segments (or collision domains). It
may 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.
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: This switch uses lasers to transmit signals over fiber optic cable. The lasers are
1. Remove and keep the LC port’s rubber cover. When not connected to a fiber
2. Check that the fiber terminators are clean. You can clean the cable plugs by
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.
cable, the rubber cover should be replaced to protect the optics.
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.
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.
4-1
Making Network Connections
4
Figure 4-1 Making LC Port Connections
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, with auto-negotiation of flow control. The maximum length for
fiber optic cable operating at Gigabit speed will depend on the fiber type as listed
under “1000 Mbps Gigabit Ethernet Collision Domain” on page 4-5.
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.
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
4-2
switch. Use only twisted-pair cables with RJ-45 connectors that conform to
FCC standards.
Twisted-Pair Devices
4
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 4-2 Making Twisted-Pair Connections
2. If the device is a network card and this 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 closet. (See “Wiring Closet Connections” on the next page.) Otherwise,
attach the 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 green Link LED (on this switch) corresponding
to each port will light to indicate that the connection is valid.
Note: Avoid using flow control on a port connected to a hub unless it is actually required
to solve a problem. Otherwise back pressure jamming signals may degrade
overall performance for the segment.
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.
4-3
Making Network Connections
4
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.
3. Label the cables to simplify future troubleshooting.
Equipment Rack
(side view)
Network Switch
TigerSwitch10 /100
6724L3
Patch Panel
Punch-Down Block
Wall
Figure 4-3 Wiring Closet Connections
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 802.3ab standards.
4-4
Connectivity Rules
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, or 6 100-ohm UTP or STP 100 m (328 ft) RJ-45
Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
62.5/125 micron
multimode fiber
50/125 micron
multimode fiber
Table 4-3 Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
9/125 micron
single-mode fiber
Table 4-4 Maximum 1000BASE-LH Gigabit Ethernet Cable Length
Fiber Size Fiber Bandwidth Maximum Cable Length Connector
9/125 micron
single-mode fiber
160 MHz/km 2-220 m (7-722 ft) LC
200 MHz/km 2-275 m (7-902 ft) LC
400 MHz/km 2-500 m (7-1641 ft) LC
500 MHz/km 2-550 m (7-1805 ft) LC
N/A 2 m - 5 km (7 - 3.2 miles) LC
N/A 2 m - 70 km (7 ft- 43.5 miles) LC
4
100 Mbps Fast Ethernet Collision Domain
Table 4-5 Maximum Fast Ethernet Cable Length
Type Cable Type Max. Cable Length
100BASE-TX Category 5 or better 100-ohm UTP
or STP
100 m (328 ft.) RJ-45
10 Mbps Ethernet Collision Domain
Table 4-6 Maximum Ethernet Cable Length
Cable Type Max. Length
Twisted Pair, Categories 3, 4, 5 or better
100-ohm UTP
100 m (328 ft.) RJ-45
Connector
Connector
4-5
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.
4-6
Appendix A: Troubleshooting
Diagnosing Switch Indicators
Table A-1 Troubleshooting Chart
Symptom Action
Power LED is Off • Power supply is disconnected.
• Check connections between the switch, the power cord, and the wall
outlet.
• Contact your local dealer for assistance.
Link LED is Off • Verify that the switch and attached device is powered on.
• Be sure the cable is plugged into both the switch and corresponding
device.
• 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.
! LED is On • Check if the internal power supply has failed and that the switch is
being powered by an RPS unit.
• Check if both cooling fans on the unit are running. If a fan has failed,
replace the unit and contact your local dealer for assistance.
• If the unit's Diag LED is also off, the unit has failed its self test. Contact
your local dealer for assistance.
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, and verify that the fans on
the unit are unobstructed and running prior to shutdown. If you still cannot isolate the
problem, then the internal power supply may be defective.
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.
A-1
Troubleshooting
A
In-Band Access
You can access the management agent in the switch from anywhere within the
attached network using Telnet, 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.
Note: The management agent can accept one to four simultaneous Telnet sessions.
If the maximum number of sessions already exists, an additional Telnet
connection will not be able to log into the system.
A-2
Appendix B: Cables
Twisted-Pair Cable and Pin Assignments
For 10/100BASE-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. (See “Cabling Guidelines” on page 4-2 for an explanation.)
Caution: DO NOT plug a phone jack connector into any RJ-45 port. This will damage
The Figure below 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.
the switch. Use only twisted-pair cables with RJ-45 connectors that conform
with FCC standards.
8
1
8
1
Figure B-1 RJ-45 Connector Pin Numbers
10/100BASE-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 this switch, you can use either
straight-through or crossover cable.
B-1
Cables
B
Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts
Pin MDI Signal Name MDI-X Signal Name
1 Transmit Data plus (TD+) Receive Data plus (RD+)
2 Transmit Data minus (TD-) Receive Data minus (RD-)
3
6
4,5,7,8
Note: The “+” and “-” signs represent the polarity of the wires that make
up each wire pair.
Receive Data plus (RD+) Transmit Data plus (TD+)
Receive Data minus (RD-) Transmit Data minus (TD-)
Not used Not used
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 this switch, you can use either
straight-through or crossover cable to connect to any device type.)
We recommend using all four wire pairs as shown in the following diagram to ease
upgrade to Gigabit Ethernet.
EIA/TIA 568B RJ-45 WiringStandard
10/100BASE-TX Straight-through Cable
White/Orange Stripe
Orange
End A
1
2
3
4
5
6
7
8
White/Green Stripe
Blue
White/Blue Stripe
Green
White/Brown Stripe
Brown
1
2
3
4
5
6
7
8
End B
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” (MDI-X) or neither port is labeled with an “X” (MDI), a crossover must be
implemented in the wiring. (When auto-negotiation is enabled for any RJ-45 port on
this switch, you can use either straight-through or crossover cable to connect to any
device type.)
We recommend using all four wire pairs as shown in the following diagram to ease
upgrade to Gigabit Ethernet.
B-2
Twisted-Pair Cable and Pin Assignments
B
EIA/TIA 568B RJ-45 Wiring Standard
10/100BASE-TX Crossover Cable
White/Orange Stripe
Orange
End A
1
2
3
4
5
6
7
8
White/Green Stripe
Blue
White/Blue Stripe
Green
White/Brown Stripe
Brown
1
2
3
4
5
6
7
8
End B
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
of any twisted-pair connection does not exceed 100 meters (328 feet)
that the length
.
Table B-2 1000BASE-T MDI and MDI-X Port Pinouts
Pin MDI Signal Name MDI-X Signal Name
1 Bi-directional Data One Plus (BI_D1+) Bi-directional Data Two Plus (BI_D2+)
2 Bi-directional Data One Minus (BI_D1-) Bi-directional Data Two Minus (BI_D2-)
3 Bi-directional Data Two Plus (BI_D2+) Bi-directional Data One Plus (BI_D1+)
4 Bi-directional Data Three Plus (BI_D3+) Bi-directional Data Four Plus (BI_D4+)
5 Bi-directional Data Three Minus (BI_D3-) Bi-directional Data Four Minus (BI_D4-)
6 Bi-directional Data Two Minus (BI_D2-) Bi-directional Data One Minus (BI_D1-)
7 Bi-directional Data One Plus (BI_D4+) Bi-directional Data One Plus (BI_D3+)
8 Bi-directional Data Four Minus (BI_D4-) Bi-directional Data Three Minus (BI_D3-)
B-3
Cables
B
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 singlemode.
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
Appendix C: Specifications
Physical Characteristics
Ports
8 SFP transceiver slots
4 10/100/1000BASE-T ports shared with four SFP transceiver slots
Network Interface
Ports 9-12: 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)
Buffer Architecture
1 Mbyte
Switching Database
16K MAC address entries
LEDs
System:
Port: Link/Act (Link/Activity), 100/1000M, 10M
Weight
3.24 kg (7.14 lbs.)
Power (Power Supply), Diag (Diagnostic), RPU (Redundant Power Unit)
Size
44 x 22.9 x 4.3 cm (17.32 x 9.01 x 1.69 in.)
Temperature
Operating: 0 to 50 °C (32 to 122 °F)
Storage: -40 to 70 °C (-40 to 158 °F)
Humidity
Operating: 5% to 95% (non-condensing)
AC Input
100 to 240 V, 50/60 Hz
Power Supply
Internal, auto-ranging transformer: 90 to 240 VAC, 47 to 63 Hz
External, supports connection for redundant power supply
C-1
Specifications
C
Power Consumption
105 Watts maximum
Maximum Current
2.0 A @ 110 VAC
1.0 A @ 230 VAC
Switch Features
Forwarding Mode
Store-and-forward
Throughput
Wire speed
Flow Control
Full Duplex: IEEE 802.3x
Half Duplex: Back pressure
Management Features
In-Band Management
Telnet, or SNMP manager
Out-of-Band Management
RS-232 DB-9 console port
Software Loading
TFTP in-band, or XModem out-of-band
Standards
IEEE 802.3 Ethernet
IEEE 802.3u Fast Ethernet
IEEE 802.3z and 802.3ab Gigabit Ethernet
IEEE 802.1D (Bridging)
IEEE 802.3x full-duplex flow control
ISO/IEC 8802-3
C-2
Compliances
CE Mark
Emissions
FCC Class A
Industry Canada Class A
EN55022 (CISPR 22) Class A
EN 61000-3-2/3
VCCI Class A
C-Tick - AS/NZS 3548 (1995) Class A
Immunity
EN 61000-4-2/3/4/5/6/8/11
Safety
CSA/CUS (CSA 22.2. NO 60950 & UL60950)
TÜV/GS(EN60950)
CB(IEC60950)
Compliances
C
C-3
C
Specifications
C-4
Glossary
10BASE-T
IEEE 802.3 specification for 10 Mbps Ethernet over two pairs of Category 3, 4, or 5
UTP cable.
100BASE-FX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two strands of 50/125 or
62.5/125 micron core fiber cable.
100BASE-TX
IEEE 802.3u specification for 100 Mbps Fast Ethernet over two pairs of Category 5
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, 5e or 6
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
Their interference makes both signals unintelligible.
with each other.
Glossary-1
Glossary
Collision Domain
Single CSMA/CD LAN segment.
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.
Gigabit Ethernet
A 1000 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.
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.
IEEE 802.3u
Defines CSMA/CD access method and physical layer specifications for
100BASE-TX Fast Ethernet.
Glossary-2
Glossary
IEEE 802.3x
Defines Ethernet frame start/stop requests and timers used for flow control on
full-duplex links.
IEEE 802.3z
Defines CSMA/CD access method and physical layer specifications for 1000BASE
Gigabit Ethernet.
LAN Segment
Separate LAN or collision domain.
LED
Light emitting diode used for monitoring a device or network condition.
Local Area Network (LAN)
A group of interconnected computer and support devices.
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.
MIB
An acronym for Management Information Base. It is a set of database objects that
contains information about the device.
Network Diameter
Wire distance between two end stations in the same collision domain.
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
Glossary-3
Glossary
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
Index
Numerics
10 Mbps connectivity rules 4-4
100 Mbps connectivity rules 4-5
1000 Mbps connectivity rules 4-4
1000BASE-T ports 1-2
100BASE-TX ports 1-2, 1-3
10BASE-T ports 1-2, 1-3
A
adhesive feet, attaching 3-4
air flow requirements 3-1
applications
central wiring closet 2-3
collapsed backbone 2-2
layer 3 routing 2-6
VLAN connections 2-4
B
brackets, attaching 3-3
buffers, saturation of 1-2
C
cable
Ethernet cable compatibility 3-1
specifications B-1
cleaning fiber terminators 4-1
compliances
EMC C-3
safety C-3
connectivity rules
10 Mbps 4-4
100 Mbps 4-5
1000 Mbps 4-4
console port 1-2
pin assignments 3-7
contents of package 3-2
cooling problems A-1
cord sets, international 3-6
D
DC input 1-4
desktop mounting 3-4
E
electrical interference, avoiding 3-1
equipment checklist 3-2
Ethernet connectivity rules 4-4
F
features C-2
management 1-5
switch 1-5
fiber cables 4-1
front panel of switch 1-1
full duplex connectivity 2-1
G
Gigabit Ethernet cable lengths 4-4, 4-5
grounding for racks 3-3
I
indicators, LED 1-3
installation
connecting devices to the switch 4-3
desktop or shelf mounting 3-4
port connections 4-2
power requirements 3-1
problems A-1
rack mounting 3-3
site requirements 3-1
wiring closet connections 4-3
L
laser safety 4-1
LED indicators
problems A-1
RPU 1-4
location requirements 3-1
M
management
agent 1-2
features 1-5, C-2
out-of-band 1-2
SNMP 1-2
Index-1
Index
Web-based 1-2
mounting the switch
in a rack 3-3
on a desktop or shelf 3-4
multimode fiber optic cables 4-1
N
network, connections 4-2
null-modem cable 1-2
O
optional redundant power unit 1-4
out-of-band management 1-2
P
package contents 3-2
pin assignments B-1
10/100BASE-TX B-1
1000BASE-T B-3
console port 3-7
DB-9 3-7
port saturation 1-2
ports, connecting to 4-2
power, connecting to 3-6
problems, troubleshooting A-1
R
rack mounting 3-3
rear panel of switch 1-1
rear panel receptacles 1-4
redundant power unit 1-4
RJ-45 port 1-2, 1-3
connections 4-2
pinouts B-3
RMON 1-2
routing applications 2-7
RPU
connecting 3-6
optional redundant power unit 1-4
RS-232 port 1-2
rubber foot pads, attaching 3-4
S
screws for rack mounting 3-2
serial port 1-2
site selelction 3-1
SNMP agent 1-2
specifications
compliances C-2, C-3
environmental C-1
physical C-1
power C-1
standards
compliance C-2, C-3
IEEE C-2
status LEDs 1-3
surge suppressor, using 3-1
switch architecture 1-1
switching
introduction to 2-1
method 1-1
T
Telnet A-2
temperature within a rack 3-3
troubleshooting
in-band access A-2
power and cooling problems A-1
switch indicators A-1
twisted-pair connections 4-2
V
VLANs
routing 2-6
tagging 2-5
W
Web-based management 1-2
Index-2
ES4612
E092004-R01
150000046300A
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