ES3628EA
24 10/100 Ports + 4G
L2/L3/L4 Intelligent Switch
Installation Guide
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Installation Guide
24 10/100 Ports + 4G L2/L3/L4 Intelligent Switch
Layer 3 Standalone Switch with
24 100BASE-TX (RJ-45) Ports,
2 1000BASE-T (RJ-45) Ports, and
2 SFP Slots
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ES3628EA
E112007-DT-R01
150200064200A
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Compliances and Safety Warnings
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, 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
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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. Les raccordeurs ne sont pas utilisé pour le système téléphonique!
Australia AS/NZS 3548 (1995) - Class A
ACN 066 352 010
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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
jamais directement le port TX (Transmission) à fibres optiques et les
embouts de câbles à fibres optiques tant qu'ils sont sous tension.
DISPOSITIF LASER
DE CLASSE I
Warnhinweis: Faseroptikanschlüsse - Optische Sicherheit
Niemals ein Übertragungslaser betrachten, während dieses
eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß
und auf die Faserkabelenden schauen, während diese
LASERGERÄT
DER KLASSE I
eingeschaltet sind.
Power Cord Safety
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 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
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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 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).
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.
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Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:
Schweiz
Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalt-
en.
Europe
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.
This guide is for system administrators with a working knowledge of network
management. You should be familiar with switching and networking concepts.
Zielgruppe Diese Anleitung ist fuer Systhemadministratoren mit Erfahrung im
Netzwerkmangament. Sie sollten mit Switch- und Netzwerkkonzepten vertraut sein.
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 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 ES3628EA 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 switch:
The 24 10/100 Ports + 4G L2/L3/L4 Intelligent Switch Management Guide
Also, as part of the switch’s firmware, there is an online web-based help that describes all
management related features.
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viii
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Contents
Chapter 1: Introduction
Overview
1-1
1-2
1-2
1-5
1-5
1-5
1-5
Switch Architecture
Network Management Options
Description of Hardware
100BASE-TX and 1000BASE-T Ports
SFP Slots
Status LEDs
Optional Redundant Power Supply
Power Supply Receptacles
Features and Benefits
Connectivity
Expandability
Performance
Management
Chapter 2: Network Planning
2-1
Introduction to Switching
Application Examples
Collapsed Backbone
Network Aggregation Plan
Remote Connections with Fiber Cable
Making VLAN Connections
Using Layer 3 Routing
Application Notes
Chapter 3: Installing the Switch
Selecting a Site
Ethernet Cabling
Equipment Checklist
Package Contents
Optional Rack-Mounting Equipment
Mounting
Rack Mounting
Desktop or Shelf Mounting
Installing an Optional SFP Transceiver
Connecting to a Power Source
Connecting to the Console Port
Wiring Map for Serial Cable
3-2
3-2
3-2
3-3
3-3
3-5
3-6
3-7
3-8
3-8
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Contents
Chapter 4: Making Network Connections
Connecting Network Devices
Twisted-Pair Devices
Cabling Guidelines
Connecting to PCs, Servers, Hubs and Switches
Network Wiring Connections
4-1
4-1
4-5
4-5
Fiber Optic SFP Devices
Connectivity Rules
1000BASE-T Cable Requirements
1000 Mbps Gigabit Ethernet Collision Domain
100 Mbps Fast Ethernet Collision Domain
10 Mbps Ethernet Collision Domain
Cable Labeling and Connection Records
Appendix A: Troubleshooting
A-1
Diagnosing Switch Indicators
Diagnosing Power Problems with the LEDs
Power and Cooling Problems
Installation
A-2
In-Band Access
Appendix B: Cables
Twisted-Pair Cable and Pin Assignments
10BASE-T/100BASE-TX Pin Assignments
Straight-Through Wiring
Crossover Wiring
1000BASE-T Pin Assignments
1000BASE-T Cable Requirements
Cable Testing for Existing Category 5 Cable
Adjusting Existing Category 5 Cabling to Run 1000BASE-T
Fiber Standards
B-1
B-4
B-4
Appendix C: Specifications
C-1
Switch Features
Management Features
Standards
C-2
C-2
C-3
C-3
Compliances
Glossary
Index
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Tables
Table 1-1
Table 1-2
Table 3-1
Table 4-1
Table 4-2
Table 4-3
Table 4-4
Table 4-5
Table 4-6
Table A-1
Table A-2
Table B-1
Table B-2
Port Status LEDs
System Status LEDs
Serial Cable Wiring
Maximum 1000BASE-T Gigabit Ethernet Cable Length
Maximum 1000BASE-SX Gigabit Ethernet Cable Length
Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Maximum 1000BASE-LH Gigabit Ethernet Cable Length
Maximum Fast Ethernet Cable Length
Maximum Ethernet Cable Length
Troubleshooting Chart
Power/RPS LEDs
10/100BASE-TX MDI and MDI-X Port Pinouts
1000BASE-T MDI and MDI-X Port Pinouts
4-4
4-4
4-5
4-5
4-5
4-5
A-1
A-1
B-2
B-3
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Figures
Figure 1-1
Figure 1-2
Figure 1-3
Figure 1-4
Figure 2-1
Figure 2-2
Figure 2-3
Figure 2-4
Figure 2-5
Figure 3-1
Figure 3-2
Figure 3-3
Figure 3-4
Figure 3-5
Figure 3-6
Figure 3-7
Figure 4-1
Figure 4-2
Figure 4-3
Figure B-1
Figure B-2
Figure B-3
Front and Rear Panels
Port LEDs
System LEDs
Power Supply Receptacles
Collapsed Backbone
Network Aggregation Plan
Remote Connection with Fiber Cable
Making VLAN Connections
IP Routing for Unicast Traffic
RJ-45 Connections
3-5
3-6
3-7
3-8
4-1
4-2
4-4
B-1
B-2
B-3
Attaching the Brackets
Installing the Switch in a Rack
Attaching the Adhesive Feet
Inserting an SFP Transceiver into a Slot
Power Receptacle
Serial Port (DB-9 DTE) Pin-Out
Making Twisted-Pair Connections
Network Wiring Connections
Making LC Port Connections
RJ-45 Connector Pin Numbers
Straight-through Wiring
Crossover Wiring
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Chapter 1: Introduction
Overview
The ES3628EA 24 10/100 Ports + 4G L2/L3/L4 Intelligent Switch has 24
100BASE-TX ports, 2 1000BASE-T ports, and 2 SFP transceiver slots. 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 and Layer 3, this switch can significantly
improve the throughput between IP segments or VLANs.
1000BASE-T Console
Uplink Ports Port
Port Status LEDs
ES3628EA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
Console
Power
RPS
25
26
27
28
Diag
27
28
100BASE-TX Ports
SFP Slots System Status LEDs
RPS
DC
12V 13A
100-240V~
50-60Hz 0.6A
Redundant Power Socket
Power Socket
Figure 1-1 Front and Rear Panels
Switch Architecture
The ES3628EA 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
For communications within the same VLAN, the switch uses store-and-forward
switching to ensure maximum data integrity. With this type of 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.
For communications between different VLANs, the switch also performs
1-1
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Introduction
1
store-and-forward checking on each packet crossing the switch, routing traffic at
wire speed using RIP or OSFP for unicast traffic, and DVMRP or PIM for multicast
traffic.
Network Management Options
This switch contains a comprehensive array of LEDs for “at-a-glance” monitoring of
network and port status. It also includes a management agent that allows you to
configure or monitor the switch using its embedded management software, or via
SNMP applications. To manage the switch, you can make a direct connection to the
RS-232 console port (out-of-band), or you can manage the switch through a network
connection (in-band) using Telnet, the on-board Web agent, or Windows-based
network management software.
For a detailed description of the advanced features, refer to the Management Guide.
Description of Hardware
100BASE-TX and 1000BASE-T Ports
The ES3628EA contains 24 100BASE-TX RJ-45 ports that operate at 10/100 Mbps,
half or full duplex, and 2 1000BASE-T RJ-45 ports that operate 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 “10BASE-T/100BASE-TX Pin
Assignments” on page B-1 or “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 or 100 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.
SFP Slots
The ES3628EA contains two Small Form Factor Pluggable (SFP) transceiver slots.
Optional SFP transceivers can be purchased for 100BASE-FX, 1000BASE-T,
1000BASE-SX, 1000BASE-LX, and 1000BASE-LH media connections.
1-2
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Description of Hardware
1
Status LEDs
The ES3628EA 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
table.
Port Link and Activity
Figure 1-2 Port LEDs
Table 1-1 Port Status LEDs
LED
Condition
Status
RJ-45 Ports 1-24
Link/Activity
On Amber
The port has a valid 10 or 100 Mbps link.
Flashing indicates activity.
Flashing Amber
RJ-45 Ports 25-26
Link/Activity
On Green
The port has a valid 1000 Mbps link.
Flashing indicates activity.
Flashing Green
SFP Transceiver Slots 27-28
Link/Activity On Green
Flashing Green
An SFP transceiver has a valid 100 or 1000 Mbps link.
Flashing indicates activity.
1-3
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Introduction
1
System Indicators
Figure 1-3 System LEDs
Table 1-2 System Status LEDs
Status
LED
Condition
On Green
On Amber
Off
Power
Internal power is operating normally.
Internal Power supply fault.
Power off or failure.
Diag
Flashing Green
On Green
On Amber
System self-diagnostic test in progress.
System self-diagnostic test successfully completed.
System self-diagnostic test has detected a fault.
Fan failure or system overheated.
Alternating
Amber & Green
RPS
On Green
On Amber
Off
Redundant power supply is receiving power.
Fault in redundant power supply (including thermal or fan).
There is no redundant power supply currently attached.
Optional Redundant Power Supply
The switch supports an optional Redundant Power Supply (RPS) that can supply
power to the switch if the internal power supply should fail.
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 “RPS” is for the
optional Redundant Power Supply (RPS).
Power Socket
Redundant Power Socket
RPS
DC
100-240V~
12V 13A
50-60Hz 0.6A
Figure 1-4 Power Supply Receptacles
1-4
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Features and Benefits
1
Features and Benefits
Connectivity
• 24 100BASE-TX ports for 10 or 100 Mbps Ethernet connections. 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.
•
2 1000BASE-T ports for easy Gigabit Ethernet integration and for protection of
your investment in legacy LAN equipment.
•
•
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 or 6 for 1000 Mbps connections.
•
IEEE 802.3-2002 Ethernet, Fast Ethernet, and Gigabit Ethernet compliance
ensures compatibility with standards-based hubs, network cards and switches
from any vendor.
Expandability
• 2 Small Form Factor Pluggable (SFP) transceiver slots.
• Supports 100BASE-FX, 1000BASE-T, 1000BASE-SX, 1000BASE-LX, and
1000BASE-LH SFP-compatible transceivers.
Performance
• Transparent bridging
• Aggregate bandwidth of up to 12.8 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
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
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Introduction
1
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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 maximum 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 network to significantly boost bandwidth
while using conventional cabling and network cards.
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Network Planning
2
Application Examples
The ES3628EA 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 ES3628EA 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 28 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 connections to workstations, power users, and
servers.
ES3628EA
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Figure 2-1 Collapsed Backbone
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Application Examples
2
Network Aggregation Plan
With 28 parallel bridging ports (i.e., 28 distinct collision domains), the ES3628EA
can collapse a complex network down into a single efficient bridged node, increasing
overall bandwidth and throughput.
In the figure below, the 100BASE-TX ports on the switch are providing 100 Mbps
full-duplex connections for up to 24 local segments through stackable switches. In
addition, the switch is also connecting several servers at 1000 Mbps.
10/100/1000 Switch
ES3628EA
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Server Farm
Fast Ethernet Switch Stack
Fast Ethernet Switch Stack
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Figure 2-2 Network Aggregation Plan
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Network Planning
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 the 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 an ES3628EA switch connecting multiple segments with
fiber cable.
ES3628EA
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1000BASE-SX MMF
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Server Farm
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Remote Switch
Remote Switch
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Figure 2-3 Remote Connection with Fiber Cable
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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.
At Layer 3, VLANs are used to create an IP interface, where one or more ports are
assigned to the same IP segment. Traffic is automatically routed between different
IP segments on the same switch, without any need to configure routing protocols.
R&D
ES3628EA
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Tagged
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Tagged Port
Untagged Ports
VLAN
aware
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VLAN
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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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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 ES3628EA 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.
ES3628EA
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Figure 2-5 IP Routing for Unicast Traffic
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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. 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.
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Network Planning
2
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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 m (6.5 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 either 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
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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
•
•
•
ES3628EA 24 10/100 Ports + 4G L2/L3/L4 Intelligent Switch
Four adhesive foot pads
Bracket Mounting Kit containing two brackets and four 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)
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Mounting
3
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.
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
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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
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.
Montage (Rack Mounting Instructions - German)
Switch-Einheiten können an ein standardmäßiges 19-Zoll Einrichtungsrack, einen
Arbeitstisch oder ein Regal montiert werden. Folgend finden Sie die
Montageanweisungen für jeden Positionstyp.
Rack-Montage
Beachten Sie die folgenden Faktoren, bevor Sie die Rack-Montage beginnen:
•
Temperatur: Da die Temperatur innerhalb einer Rackeinheit höher als die
Raumumgebungstemperatur sein kann, stellen Sie bitte sicher, dass die
Rackumgebungstemperatur innerhalb des angegebenen
Betriebstemperaturbereichs liegt. (Siehe "Temperatur" auf Seite C-1.)
•
•
Mechanische Last: Stellen Sie kein Gerät auf eine Rack-Montageeinheit.
Stromüberlastung: Stellen Sie sicher, dass der Netzkreis der Rackeinheit nicht
überlastet wird.
•
Erdung: Die Rack-Montageeinheit muss richtig geerdet werden. Besondere Acht
sollten Sie bei Verbindungen geben, die nicht direkt zum Netz führen.
So montieren Sie Geräte an ein Rack:
1. Befestigen Sie die Metallwinkel mit den im Metallwinkel-Montageset
erhältlichen Schrauben an dem Gerät.
2. Befestigen Sie das Gerät mit vier Rackmontageschrauben (nicht beigelegt) an
dem Rack.
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Mounting
3
3. Wenn Sie nur einen Switch installieren, dann springen Sie bitte über zu
"Verbinden mit einer Stromquelle" auf Seite 3-7 am Ende dieses Kapitels.
4. Wenn Sie mehrere Switches installieren möchten, dann montieren Sie sie
untereinander in einer beliebigen Reihenfolge.
Desktop or Shelf Mounting
1. Attach the four adhesive feet to the bottom of the first switch.
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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.
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Installing the Switch
3
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.
Installing an Optional SFP Transceiver
Figure 3-5 Inserting an SFP Transceiver into a Slot
This switch supports 100BASE-FX, 1000BASE-T, 1000BASE-SX, 1000BASE-LX,
and 1000BASE-LH SFP 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-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.
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Connecting to a Power Source
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 Supply, connect it to the switch and
to an AC power source now, following the instructions included with the
package.
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Installing the Switch
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 table.
1
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Figure 3-7 Serial Port (DB-9 DTE) Pin-Out
Wiring Map for Serial Cable
Table 3-1 Serial Cable Wiring
Null Modem
Switch’s 9-Pin
Serial Port
PC’s 9-Pin
DTE 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.
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
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Chapter 4: Making Network Connections
Connecting Network Devices
The ES3628EA 24 10/100 Ports + 4G L2/L3/L4 Intelligent Switch is 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 other devices using optional SFP transceivers.
Twisted-Pair Devices
Each device requires an unshielded twisted-pair (UTP) cable with RJ-45 connectors
at both ends. Use Category 3 or better for 10BASE-T connections, Category 5 or
better for 100BASE-TX connections, and Category 5, 5e or 6 cable for 1000BASE-T
connections.
Cabling Guidelines
The RJ-45 ports on this 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
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Making Network Connections
4
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
closet. (See “Network Wiring Connections” on page 4-2.) 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 Link LED (on the 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 attached to the hub.
Network Wiring Connections
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.
3. Label the cables to simplify future troubleshooting. See “Cable Labeling and
Connection Records” on page 4-5.
Equipment Rack
(side view)
Network Switch
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Wall
Figure 4-2 Network Wiring Connections
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Fiber Optic SFP Devices
4
Fiber Optic SFP Devices
An optional SFP transceiver (100BASE-FX, 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 multimode fiber optic port requires 50/125 or 62.5/125 micron multimode fiber
optic cabling with an LC connector at both ends. Each single-mode fiber port
requires 9/125 micron single-mode fiber optic cable with an LC connector at both
ends.
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.
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.
4. 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.
5. 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 LC Port Connections
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4
6. As a connection is made, check the Link LED on the switch corresponding to
the port to be sure that the connection is valid.
100BASE-FX fiber optic ports operate a 100 Mbps full duplex. 1000BASE-SX,
1000BASE-LX and 1000BASE-LH fiber optic ports operate at 1 Gbps full duplex. All
of these SFP modules also support auto-negotiation of flow control. The maximum
length for fiber optic cable depends on the fiber type as listed under “100 Mbps Fast
Ethernet Collision Domain” on page 4-5 and “1000 Mbps Gigabit Ethernet Collision
Domain” on page 4-4.
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 802.3-2002 (formerly IEEE 802.3ab) standards.
1000 Mbps Gigabit Ethernet Collision Domain
Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable Type
Maximum Cable Length Connector
100 m (328 ft) RJ-45
Category 5, 5e, 6 100-ohm UTP or STP
Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length
Fiber Size
Fiber Bandwidth
160 MHz/km
Maximum Cable Length Connector
62.5/125 micron
multimode fiber
2-220 m (7-722 ft)
2-275 m (7-902 ft)
2-500 m (7-1641 ft)
2-550 m (7-1805 ft)
LC
LC
LC
LC
200 MHz/km
50/125 micron multimode 400 MHz/km
fiber
500 MHz/km
4-4
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Cable Labeling and Connection Records
4
Table 4-3 Maximum 1000BASE-LX Gigabit Ethernet Cable Length
Fiber Size
Fiber Bandwidth
Maximum Cable Length
Connector
9/125 micron
single-mode fiber
N/A
2 m - 5 km (7 ft - 3.2 miles) LC
Table 4-4 Maximum 1000BASE-LH Gigabit Ethernet Cable Length
Fiber Size
Fiber Bandwidth
Maximum Cable Length
Connector
9/125 micron
single-mode fiber
N/A
2 m - 70 km (7 ft - 43.5 miles) LC
100 Mbps Fast Ethernet Collision Domain
Table 4-5 Maximum Fast Ethernet Cable Length
Type
Cable Type
Max. Cable Length Connector
100BASE-TX Category 5 or better 100-ohm UTP or STP 100 m (328 ft)
RJ-45
SC
100BASE-FX 50/125 or 62.5/125 micron core multimode 2 km (1.24 miles)
multimode
fiber (MMF)
100BASE-FX 9/125 micron core single-mode fiber (SMF) 20 km (12.43 miles) SC
single-mode
10 Mbps Ethernet Collision Domain
Table 4-6 Maximum Ethernet Cable Length
Cable Type
Maximum Length
Connector
Twisted Pair, Categories 3, 4, 5 or better
100-ohm UTP
100 m (328 ft)
RJ-45
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.
4-5
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Making Network Connections
4
• 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
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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 dealer for assistance.
Power LED is Amber
Diag LED is Amber
•
Internal power supply has failed. Contact your local dealer for assistance.
•
•
Power cycle the switch to try and clear the condition.
If the condition does not clear, contact your dealer for assistance.
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.
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.
Diagnosing Power Problems with the LEDs
The Power and RPS LEDs work in combination to indicate power status as follows.
Table A-2 Power/RPS LEDs
Power LED
Green
Green
Green
Amber
Off
RPS LED
Green
Amber
Off
Status
Internal power functioning normally; RPS is present.
Internal power functioning normally; RPS plugged in but faulty.
Internal power functioning normally; RPS not plugged in.
Internal power faulty; RPS delivering power.
Both internal power and RPS unplugged or not functioning.
Green
Off
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.
A-1
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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 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.
Caution: The management agent can accept up 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
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Appendix B: Cables
Twisted-Pair Cable and Pin Assignments
For 10BASE-T and 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 4-1 for an explanation.)
Caution: DO NOT plug a phone jack connector into any RJ-45 port. This will damage the
switch. Use only twisted-pair cables with RJ-45 connectors that conform with
FCC standards.
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.
8
8
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 this switch, you can use either
straight-through or crossover cable.
B-1
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Cables
B
Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts
Pin
MDI Signal Name
Transmit Data plus (TD+)
Transmit Data minus (TD-)
Receive Data plus (RD+)
Receive Data minus (RD-)
Not used
MDI-X Signal Name
Receive Data plus (RD+)
Receive Data minus (RD-)
Transmit Data plus (TD+)
Transmit Data minus (TD-)
Not used
1
2
3
6
4,5,7,8
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 this switch, you can use either
straight-through or crossover cable to connect to any device type.)
We recommend connecting all four wire pairs as shown in the following diagram to
ease a future upgrade to Gigabit Ethernet.
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” (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 connecting all four wire pairs as shown in the following diagram to
ease a future upgrade to Gigabit Ethernet.
B-2
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Twisted-Pair Cable and Pin Assignments
B
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 and MDI-X Port Pinouts
Pin
1
MDI Signal Name
MDI-X Signal Name
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 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+)
2
3
4
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 Four Plus (BI_D4+)
Bi-directional Data Four Minus (BI_D4-)
Bi-directional Data One Minus (BI_D1-)
Bi-directional Data Three Plus (BI_D3+)
Bi-directional Data Three Minus (BI_D3-)
7
8
B-3
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Cables
B
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.
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
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Appendix C: Specifications
Physical Characteristics
Ports
24 100BASE-TX RJ-45 ports,
2 1000BASE-T RJ-45 ports,
2 SFP slots
Network Interface
Ports 1-24: 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)
Ports 25-26: 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
32 Mbyte
Aggregate Bandwidth
12.8 Gbps
Switching Database
16K MAC address entries
LEDs
System: Power (Power Supply), Diag (Diagnostic), RPS (Redundant Power Supply)
Port: Single LED indicating link, speed, and activity
Weight
3.1 kg (6.86 lbs)
Size
44.0 x 23.0 x 4.4 cm (17.4 x 9.1 x 1.7 in.)
Temperature
Operating: 0 to 50 °C (32 to 122 °F)
Storage: -40 to 70 °C (-40 to 158 °F)
C-1
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Specifications
C
Humidity
Operating: 5% to 95% (non-condensing)
AC Input
100 to 240 V, 50-60 Hz, 0.8A
Power Supply
Internal, auto-ranging transformer: 90 to 240 VAC, 47 to 63 Hz
External, supports connection for 14-pin redundant power supply
Power Consumption
28.44 Watts maximum
Maximum Current
0.56 A @110 VAC
0.32 A @ 240 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, HTTP, SSH, or SNMP manager
Out-of-Band Management
RS-232 DB-9 console port
Software Loading
TFTP in-band, or XModem out-of-band
C-2
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Standards
C
Standards
IEEE 802.1D (Bridging)
IEEE 802.3-2002
Ethernet, Fast Ethernet, Gigabit Ethernet
Full-duplex flow control
Link Aggregation Control Protocol
ISO/IEC 8802-3
Compliances
Emissions
FCC Class A
Industry Canada Class A
EN 55022 (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 (UL 60950-1, CSA 60950-1)
CB (IEC 60950-1 & EN 60950-1)
Electromagnetic Compatibility
CE Mark
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, 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 50/125, 62.5/125 or
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 with each other.
Their interference makes both signals unintelligible.
Glossary-1
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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 and 100BASE-FX Fast Ethernet.
Glossary-2
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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.
MIB
An acronym for Management Information Base. It is a set of database objects that
contains information about the device.
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.
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
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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
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Index
cooling problems A-1
cord sets, international 3-7
Numerics
10 Mbps connectivity rules 4-5
100 Mbps connectivity rules 4-5
1000 Mbps connectivity rules 4-4
1000BASE-T
pin assignments B-3
ports 1-2
D
DC input 1-4
desktop mounting 3-5
device connections 4-1
100BASE-TX
pin assignments B-1
ports 1-2
E
10BASE-T
pin assignments B-1
ports 1-2
F
A
management 1-5
switch 1-5
fiber cables 4-3
full duplex connectivity 2-1
adhesive feet, attaching 3-5
air flow requirements 3-1
applications
central wiring closet 2-3
collapsed backbone 2-2
layer 3 routing 2-6
VLAN connections 2-4
G
Gigabit Ethernet cable lengths 4-4
B
brackets, attaching 3-3
buffer size C-1
I
C
desktop or shelf mounting 3-5
problems A-2
site requirements 3-1
wiring closet connections 4-2
cable
Ethernet cable compatibility 3-1
labeling and connection records 4-5
cleaning fiber terminators 4-3
compliances
EMC C-3
safety C-3
connectivity rules
10 Mbps 4-5
100 Mbps 4-5
L
laser safety 4-3
LED indicators
Diag 1-4
Link 1-3
Power 1-4
RPS 1-4
1000 Mbps 4-4
console port
pin assignments 3-8
console port, pin assignments 3-8
contents of package 3-2
Index-1
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Index
location requirements 3-1
RPS
rubber foot pads, attaching 3-5
M
management
agent 1-2
S
features 1-5, C-2, C-3
out-of-band 1-2
SNMP 1-2
screws for rack mounting 3-2
site selelction 3-1
SNMP agent 1-2
specifications
compliances C-3
environmental C-1
physical C-1
Web-based 1-2
mounting the switch
in a rack 3-3
on a desktop or shelf 3-5
multimode fiber optic cables 4-3
power C-2
standards, compliance C-3
status LEDs 1-3
surge suppressor, using 3-1
switch architecture 1-1
switching
N
network, connections 4-1
O
optional redundant power supply 1-4
introduction to 2-1
method 1-1
out-of-band management 1-2
P
T
package contents 3-2
pin assignments B-1
10/100BASE-TX B-1
1000BASE-T B-3
console port 3-8
DB-9 3-8
Telnet A-2
temperature within a rack 3-3
troubleshooting
in-band access A-2
power and cooling problems A-1
twisted-pair connections 4-1
ports, connecting to 4-1
power, connecting to 3-7
V
VLANs
routing 2-6
tagging 2-5
R
rack mounting 3-3
rear panel receptacles 1-4
redundant power supply 1-4
RJ-45 port 1-2
W
Web-based management 1-2
connections 4-1
pinouts B-3
Index-2
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ES3628EA
E112007-DT-R01
150200064200A
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