Layer 3 Standalone Switch with
24 100BASE-TX (RJ-45) Ports,
2 1000BASE-T (RJ-45) Ports, and
2 SFP Slots
ES3628EA
E112007-DT-R01
150200064200A
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
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.
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.
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 emissi on ac cord ing to EN 61000-3 -2/ 199 5
• 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 6 1000-4-5:1995
(AC/DC Line to Line: ±1 kV, AC/DC Line to Earth: ±2 kV)
• Immunity to conducted disturbance s, 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%
Reductio n @5 00 ms, >95% Red uc t ion @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
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, nev er look d irectly at the f iber T X port and fiber c able
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.
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.
Power Cord Safety
Please read the following safety information carefully before installing the switch:
WARNING: I nstallat ion and removal of the unit must be carried out by quali fied 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
iii
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 CanadaThe cord set must be UL-approved and CSA certified.
The minimum specifications for th e 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 c urrent 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.
DenmarkThe supply plug must comply with Section 107-2-D1, Standard
SwitzerlandThe supply plug must comply with SEV/ASE 1011.
U.K.The supply plug must comply with BS1363 (3- pin 13 A) and be fitte d
EuropeThe 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 <BASE C> marked and be of type
HO3VVF3GO.75 (minimum).
The mains cord must be <HAR> or <BASE C> 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’inst allation 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 -
Etats-Unis et
Canada:
Danemark:La prise mâle d’alimentatio n doi t re specte r la sec tion 1 07-2 D1 de la
Suisse:La pris e mâle d’alimen ta tio n doit res pect er la norme SEV /A SE 101 1.
EuropeLa prise secteur doit être con forme aux normes CEE 7/7 (“SCHUKO”)
Il doit être agréé dans le pays d’utilisation
Le cordon doit avoir reçu l’ho mologat ion de s UL et un ce rtific at de la
CSA.
Les spe'cifications mini males pour un cable flexible sont AWG No.
18, ouAWG No. 16 p our un c able d e longueur infe'ri eure a` 2 me't res.
- 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 mass e ) et re s p ecter la configu r ation NEMA 5-15P (15 A,
125 V) ou NEMA 6-15P (15 A, 250 V).
norme DK2 1a ou DK2 5a.
LE cordon secteur do it porter la mention <HA R> 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
SchweizDieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalt-
EuropeDas Netzkabel muß vom Typ HO3VVF3GO.75 (Mind estanforderung)
. Dies muss von dem Land, in dem es benutzt wird geprüft werden:
en.
sein und die Aufschrift <H AR> 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
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:Wear an anti-static wrist strap or take other suitable measures to prevent
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
only.
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.
electrostatic discharge when handling this equipment.
device. Les raccordeurs ne sont pas utilisé pour le système téléphonique!
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
Achtung: Wenn das Gerät an eine Steckdose angeschlossen wird, muß der
Achtung: Dieses Gerät nutzt Laser zur Signalübertragung über Glasfasern. Die Laser
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 Er fahrung im
Netzwerkmangament. Sie sollten mit Switch- und Netzwerkkonzepten vertraut sein.
Servicepersonal durchgeführt werden.
Masseanschluß am dreipoligen Netzstecker mit Schutzerde verbunden
werden, um elektrische Gefahren zu vermeiden.
entsprechen den Anforderungen an eine Lasereinrichtung der Klasse 1 und
sind durch ihre Bauart im normalen Betrieb sicher für die Augen. Trotzdem
sollte niemals direkt in den einen Übertragungskanal geblickt werden, wenn
er eingeschaltet ist.
vi
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
Figure 1-1Front and Rear Panels 1-1
Figure 1-2Port LEDs 1-3
Figure 1-3System LEDs 1-4
Figure 1-4Power Supply Receptacles 1-4
Figure 2-1Collapsed Backbone 2-2
Figure 2-2Network Aggregation Plan 2-3
Figure 2-3Remote Connection with Fiber Cable 2-4
Figure 2-4Making VL AN Connections 2-5
Figure 2-5IP Routing for Unicast Traffic 2-6
Figure 3-1RJ-45 Connections 3-2
Figure 3-2Attaching the Brackets 3-3
Figure 3-3Installing the Switch in a Rack 3-4
Figure 3-4Attaching the Adhesive Feet 3-5
Figure 3-5Inserting an SFP Transceiver into a Slot 3-6
Figure 3-6Power Receptacle 3-7
Figure 3-7Serial Port (DB-9 DTE) Pin-Out 3-8
Figure 4-1Making Twisted-Pair Connections 4-1
Figure 4-2Network Wiring Connections 4-2
Figure 4-3Making LC Port Connections 4-4
Figure B-1RJ-45 Connector Pin Numbers B-1
Figure B-2Straight-through Wiring B-2
Figure B-3Crossover Wiring B-3
xii
Chapter 1: Introduction
Overview
The ES3628EA 24 10/100 Por ts + 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 t he m ai n b oard. This agent
supports both in-band and out -o f- band access for managing the switch.
This switch can easily tame your network with full support for Spanning Tree
Protocol, Multicast Switch in g, Virtual LANs, and IP routing. It brings order to po or ly
performing networks by segregating them into separate broadcast domain s w ith
IEEE 802.1Q compliant VLANs, empowers multime di a applications with multicast
switching and CoS servi ces, and eliminates conven tio nal ro ut er bot t lenecks.
It can be used to augment or completely replace slow legacy routers,
IP traffic to release valuable resources for non-IP rout ing or WAN access. With
wire-speed performance for Layer 2 and Layer 3, th i s sw it ch can significantly
improve the throughput between IP segments or VLANs.
Port Status LEDs
5
678910
1234
100BASE-TX PortsSFP Slots
131817162120192423
11 121514
off-loading local
1000BASE-T
Uplink Ports
22
Console
Port
26
25
25 26 27 28
27
28
System Status LEDs
ES3628EA
Console
Power
RPS
Diag
RPS
DC
12V13A
100-240V~
50-60Hz 0.6A
Power SocketRedundant Power Socket
Figure 1-1 Front and Rear Panels
Switch Architecture
The ES3628EA emplo ys a wire-speed, non-blocking switching fabric. This permits
simultaneous wire-spee d tr ansport of multiple packets at low lat ency 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 wi t hi n th e sa me VLAN, the switch uses store-and-forward
switching to ensure maximum data integrity. With this type of switching, the entire
packet must be received int o a buffer and checked for validity bef or e being
forwarded. This prevents errors from being propagated thro ughout the network.
For communications between different VLANs, the swi t ch also performs
1-1
Introduction
1
store-and-forward checking on each packet cross ing t he switch, routing traffic at
wire speed using RIP or OSFP for uni cas t traffic, and DV M RP or PIM f or mu ltica st
traffic.
Network Management Options
This switch contains a comprehensive array of LEDs for “at-a-glance” monitoring of
network and port status. I t also i ncludes a management agent th at allo w s you to
configure or monitor the swi tc h using its embedded manage m ent so ftware, or vi a
SNMP appli cations. To manage th e switch, you can make a di r ect connection to the
RS-232 console port (out-of-band), or you can manage the switch through a network
connection (in-band) using Te l net , 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 1000BAS E- T R J-45 ports that operate at 1000 Mbps, full
duplex. Because all RJ-45 ports on this switch support autom at i c M D I/MD I - 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/10 0BASE-TX Pin
Assignments” on page B-1 or “1000BAS E-T Pin Assi g nm ents” on page B-3.)
Each of these ports support auto-negotiation, so the opti m um 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 aut o- n e got i at i on, th e
communication mode of that port can be configu re d m anually.
Each port also supports auto- ne got i at ion of flow control, so the switch can
automatically prevent por t buffers from becoming saturated.
SFP Slots
The ES3628EA contains two Small Form Factor Pluggable (SFP) transceiver slots.
Optional SFP transceivers can be purchase d for 100BASE-FX, 1000BASE-T,
1000BASE-SX, 1000BASE-LX, an d 100 0BASE-LH media connections.
1-2
Description of Hardware
1
Status LEDs
The ES3628EA includes a dis pl ay panel for key system and port indic at ions that
simplify installation and network troubleshooting. The LED s, which are located on
the front panel for easy viewin g, are shown below and descr ib ed in t he f ol low i ng
table.
Port Link and Activity
Figure 1-2 Port LEDs
Table 1-1 Port Status LEDs
LEDConditionStatus
RJ-45 Ports 1-24
Link/ActivityOn AmberThe port has a valid 10 or 100 Mbps link.
Flashing AmberFlashing indicates activity.
RJ-45 Ports 25-26
Link/ActivityOn GreenThe port has a valid 1000 Mbps link.
Flashing GreenFlashing indicates activity.
SFP Transceiver Slots 27-28
Link/ActivityOn GreenAn SFP transceiver has a valid 100 or 1000 Mbps link.
Flashing GreenFlashing indicates activity.
1-3
Introduction
1
System Indicators
Figure 1-3 System LEDs
Table 1-2 System Status LEDs
LEDConditionStatus
PowerOn GreenInternal power is operating normally.
On AmberInternal Power supply fault.
OffPow er off or failure.
DiagFlashing GreenSystem self-diagnostic test in progress.
On GreenSystem self-diagnostic test successfully completed.
On AmberSystem self-diagnostic test has detected a fault.
Alternating
Fan failure or system overheated.
Amber & Green
RPSOn GreenRedundant power supply is receiving power.
On AmberFault in redundant power supply (including thermal or fan).
OffThere is no redundant power supply currently attached.
Optional Redundant Power Supply
The switch supports an optional Redundant Power Supply (RPS ) th at can supply
power to the switch if the internal power supply should fail.
Power Supply Receptacles
There are two power rece ptac les on the rear panel of the switch. The stan dar d
power receptacle is for the AC power cor d. The receptacle labeled “RPS” is for the
optional Redundant Power Supply (RPS).
Power Socket
100-240V~
50-60Hz 0.6A
1-4
Redundant Power Socket
RPS
DC
12V13A
Figure 1-4 Power Supply Rec ept ac le s
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 pro te ct ion of
your investment in legacy LAN equipment.
• RJ-45 ports support auto M D I/MD I - X pi nou t s el ecti on.
• Unshielded (UTP) cable supported on all RJ-45 por ts : Ca te gor y 3 or better for
10 Mbps connection s, C at egory 5 or better for 100 Mbps co nnections, and
Category 5, 5e or 6 for 1000 Mb ps connections.
• IEEE 802.3-2002 Etherne t, Fast Ethernet, and Gigabit Ethern et com pliance
ensures compatibilit y w i th sta ndards-based hubs, netw or k cards and switches
from any vendor.
Expandability
• 2 Small Form Factor Pluggabl e (SF P ) trans cei v er slo ts.
• Switch in g t abl e wit h a total of 16K MAC address ent r ies a nd 4 K I P ad dr es s en tr i e s
• Provides store-and-fo rward switching for intra-VL AN t ra ffi c, and IP r out i ng for
inter-VLAN traffic
• Supports wire-speed switching at Layer 2, and wir e-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
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 parti tion 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 tech n ol ogy.
When performance bottlenecks are caused by congestion at the network access
point (such as the network c ard for a high-volume file serve r), the device
experiencing congest i on (server, power user or hub) can be attached direct l y t o a
switched port. And, by using full-duplex mode, the bandwidth of the dedicated
segment can be doubl ed t o m ax im ize throughput.
When networks are bas ed on repeater (hub) techno logy, the maximum distan ce
between end stations is limi te d by a m aximum hop count. Howe ver, a switch turns
the hop count back to ze ro.
So subdividing the network into smaller and more m anageable 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 car ds .
2-1
Network Planning
2
Application Examples
The ES3628EA switch is no t on l y des i gned to segment your networ k, but also to
provide a wide range of opti ons 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 si gnif ic an t gr owth is expected in the near futu re . In a
basic stand-alone co nfiguration, it can prov i de direct ful l -duplex connections for up
to 28 workstations or server s. Wh en t he time comes for further network expansion,
you can easily build on this basic configuration by add in g Fast Ethernet or Gigabit
Ethernet links directly to one or more workgroup switc hes .
In the figure below, this switch is operating as a collapsed backbone for a small LAN.
It is providing dedicated fu ll- dup le x connections to workstations, power users, and
servers.
ES3628EA
26
1234
5
678910
131817162120192423
11 121514
25
22
25 26 27 28
27
Console
Power
RPS
Diag
28
2-2
...
Servers
1 Gbps
Full Duplex
...
Workstations
100 Mbps
Full Duplex
Figure 2-1 Collapsed Backbone
...
Application Examples
2
Network Aggregation Plan
With 28 parallel bridging ports (i.e., 28 distin ct coll ision domains), the ES3628EA
can collapse a complex network down into a single efficient bridged node, increasing
overall bandwidth and throu gh put .
In the figure below, the 100BASE-TX ports on the switch are providing 100 Mbps
full-duplex connections for up to 24 local segments thr ough stackable switches. In
addition, the switch is also connecting several servers at 1000 Mbps.
10/100/1000 Switch
ES3628EA
26
1234
5
678910
131817162120192423
11 121514
25
22
Console
Power
25 26 27 28
RPS
Diag
27
28
Server Farm
Fast Ethernet Switch Stack
.
.
.
.
.
.
...
Fast Ethernet Switch Stack
1
ES3526F
1
ES3526F
.
.
.
.
.
.
10/100 Mbps Segments
...
Figure 2-2 Network Aggregation Plan
1
ES3526F
1
ES3526F
2-3
Network Planning
1
13
7
19
2
14
8
20
3
15
9
21
4
16
10
22
5
17
11
23
6
18
12
24
25
26
2526
12 3 4 5 6 13 14 15 16 17 18
7 8 9 10 1112 19 20 21 22 23 24
Clear
Reset
Self
Test
Fan
Status
Link
Act
Link
Act
Console
Power
Fault
1
13
7
19
2
14
8
20
3
15
9
21
4
16
10
22
5
17
11
23
6
18
12
24
25
26
2526
12 3 4 5 6 13 14 15 16 17 18
7 8 9 10 1112 19 20 21 22 23 24
Clear
Reset
Self
Test
Fan
Status
Link
Act
Link
Act
Console
Power
Fault
2
Remote Connections with Fiber Cable
Fiber optic technology allo w s fo r longer cabling than any other me di a 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 S FP ca n 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 t o a re mote site.
The figure below illustrates an ES3628EA switch connecting multiple segments with
fiber cable.
ES3628EA
26
1234
1000BASE-SX MMF
(500 m)
Server Farm
Remote SwitchRemote Switch
25
26
Act
Console
Act
Self
Fan
Test
Status
Self
Fan
Clear
Test
Status
10/100/1000 Mbps Segments
5
678910
131817162120192423
11 121514
1000BASE-LX SMF
(5 kilometers)
Link
25
26
Link
25
22
25 26 27 28
27
Console
Power
RPS
Diag
28
2-4
...
...
Figure 2-3 Remote Connection with Fiber Cable
Application Examples
2
Making VLAN Connections
This switch supports VLANs which can be used to organize any gro up of network
nodes into separate broadcast doma i ns. 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 untagg ed 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 sw i tch. However, tagged VLANs should be used for
larger networks, and all VLANs assigned to the inter-s witch links.
This switch also supports multiple spanning trees which allow VLAN groups to
maintain a more stable path between all V LAN m em bers. This can reduce the
overall amount of protoc ol traffic crossing the network, and pr ovi de a shorter
reconfiguration time w hen any link in the spanning tree fails.
At Layer 3, VLANs are used to cre at e an IP int er fa ce, where one or more ports are
assigned to the same IP segm ent. Traffic is automatically routed between different
IP segments on the same swi t ch, w ith out any need to configure routin g pr ot ocols.
R&D
Testing
VLAN 2
VLAN 1
Tagged
Ports
Finance
VLAN 3
VLAN 4
Untagged Ports
Marketing
VLAN
unaware
switch
1234
Finance
VLAN 3
5
678910
131817162120192423
11 121514
Tagged Port
22
VLAN 1
R&D
25
25 26 27 28
27
VLAN 2
ES3628EA
26
Console
Power
RPS
Diag
28
VLAN
aware
switch
Testing
Figure 2-4 Making VLAN Con nections
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 router s t o i nt er connect VLANs, you can lose mo st of your
performance advantage. Th e ES3 628EA provides wire-speed rou tin g, whi ch a llows
you to eliminate your conventional IP routers, exc ep t 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 Laye r 2
traffic based on VLANs, but will now pr ov id e int er -VLAN connections for IP
applications. This switch will perform IP routing for specified VLAN groups, a directly
connected subnetwor k, a remote IP subnetwork o r ho st add ress, a subnetwork
broadcast address, a sw i t ch IP address on a specific IP sub net work, or an IP
multicast address.
ES3628EA
26
1234
5
678910
131817162120192423
11 121514
25
22
25 26 27 28
27
Console
Power
RPS
Diag
28
2-6
VLAN 1
R&D
Testing
IP Network 1
VLAN 2
Figure 2-5 IP Routing f or Un ic ast Tr af fic
IP Network 2
Application Notes
2
Application Notes
1.Full-duplex operati on only applie s t o 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 hal f -d uplex mode.
2.Avoid using flow co nt ro l o n a por t con nected to a hub unless it is actual ly
required to solve a probl em . Otherwise back pressure jamm i ng signals may
degrade overall perfor m ance for the segment attached to t he hub.
3.For network applications that require routing between dissimilar network types,
you can attach this switch d irectly 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 al so be considered when ca lcul at i ng
the maximum cable le ngth f or 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 lo cation.
• The site should:
• be at the center of all the devi ces you want to link and near a power out le t .
• be able to maintain its temperature within 0 to 50 °C (32 to 122 °F) and its
humidity within 5% to 95 % , no n- 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 interfer ence, 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 eac h device and is powered from an
independent circuit breaker. As with any equipment, using a filter or surge
suppressor is recomm e nded.
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 fol l owi ng criteria against the current in stallat i on of your
network:
with RJ-45 connectors; Category 3 or better for 10BASE-T, Categ ory 5 or better
for 100BASE-TX, and Category 5 or better for 1000BASE-T.
• Protection from rad io frequency interference em issions
• Electrical surge suppression
• Separation of electrical wires (switch related or other) and electromagnetic fields
from data based networ k w iring
• Safe connections with no dam aged cables, connect or s or shi elds
3-1
Installing the Switch
3
RJ-45 Connector
Figure 3-1 RJ-45 Connection s
Equipment Checklist
After unpacking the switch, check the contents to be sure you hav e received all the
components. Then, before begi nning the installation, be sure y ou ha ve all other
necessary installation equipment.
• Bracket M ounting Kit containing two brackets and four screws for attachi ng the
brackets to the switch
• Power Cord—either US, Continental Europe or UK
• RS-232 console cable
• This Installation Guide
• Management Gui de
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 o n th e ty pe of screws used)
3-2
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 th e swi t ch, pay particular attention to the follow ing factors:
• Temperature: Since the temperat ure wit hi n a r ack as sem bl y ma y be hi gher t han
the ambient room temper at ur e, check that the rack-enviro nm ent temperature is
within the specified oper at in g te m pe rature 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 asse m bl y i s no t
overloaded.
• Grounding: Rack-m oun t ed equipment should be pro per l y gr oun ded. Particular
attention should be give n t o sup pl y connections other than direct connections to
the mains.
To rack-mount devices:
1.Attach the brackets to th e dev i ce us i ng t he 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 ra ck- m ounting screws (not prov id ed) .
Figure 3-3 Installing the Switch in a Rack
3.If installing a single swi t ch 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- Zol l Einrichtungsrack, einen
Arbeitstisch oder ein Regal mon tier t werd en. Folgend finden Sie die
Montageanweisungen für je den Positionstyp.
Rack-Montage
Beachten Sie die folgende n Faktoren, bevor Sie die Rack- M ontage beginnen:
• Temperatur: Da die Tem peratur innerhalb einer Ra ck ei nheit höher als die
Raumumgebungste m peratur sein kann, stellen Sie bi t te si cher, dass die
Rackumgebungstemperatur innerhalb des angegebenen
Betriebstemperaturbe re ichs liegt. (Siehe "Temperatur" au f Sei te C-1. )
• Mechanische Last: Stellen Sie kein Gerät auf eine Rack-Montageeinheit.
• Stromüberlastung: Stell en Sie si cher, 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 N etz führen.
So montieren Sie Geräte an ein Rack:
1.Befestigen Sie die Metallwinkel mit den im Metallwinkel-Montageset
erhältlichen Schraube n an dem Gerät.
2.Befestigen Sie das Gerät mit vier Rackmon tage schrauben (nicht beigeleg t) an
dem Rack.
3-4
Mounting
3.Wenn Sie nur einen Switch installieren, dann sp r i ngen Sie bitte über zu
"Verbinden mit einer Stromquelle" auf Seite 3-7 am Ende dieses Ka pi te ls.
4.Wenn Sie mehrere Sw i tches 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.
g
a
i
D
S
P
R
28
Power
27
Console
8
2
7
2
6
2
5
2
ES3628EA
26
25
4
2
3
2
2
2
1
2
0
2
9
1
8
7
1
6
1
5
1
4
1
31
1
11 1 2
8910
67
5
4
3
2
1
Figure 3-4 Attaching the Adh esive Feet
3
2.Set the device on a f la t surf ac e near an AC power source, ma ki ng sur e t her e
are at least two inches of spac e on al l si des for proper air flow.
3-5
Installing the Switch
3
3.If installing a single sw i tch 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 t he one below, in any order.
Installing an Optional SFP Transceiver
Figure 3-5 Inserting an SFP Tr ansceiver 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 tran sceiver with the optical connector facing outward and the slot
connector facing down. N ot e th at SFP t ran sceivers are keyed so they can only
be installed in one orientation.
3.Slide the SFP tran sceiver into the slot until it clicks into plac e.
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.
3-6
Connecting to a Power Source
3
Connecting to a Power Source
To connect a device to a power source:
1.Insert the po w er cabl e 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 t o be sur e th e Power
LED is lit. If not, check that the p ow er 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 inst ru ct ions included with the
package.
3-7
Installing the Switch
3
Connecting to the Console Port
The DB-9 serial port on the sw i t ch ’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 P C run ni ng a terminal emulation progr am . The pi n
assignments used to conn ect to th e ser i al port are provided in the follow in g table.
1
5
69
Figure 3-7 Serial Port (DB-9 DT E) Pin- O ut
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 ModemPC’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
3-8
Chapter 4: Making Network Connections
Connecting Network Devices
The ES3628EA 24 10/100 P or ts + 4G L2/L3 /L 4 In tel lige nt Swi tch i s des i gned to
interconnect multiple segments (or collision doma in s) . 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 oth er d evi ces using optional SFP trans ceivers.
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 swit ch support automatic MDI /MD I- X pi nout 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 inf or m at i on 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
4-1
Making Network Connections
witch10/100
6724L3
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. ( S ee “Network Wi r ing Connections” on page 4-2.) Oth erwise, attach the
other end to an available po rt on the switch.
Make sure each twisted pair cabl e does not exceed 100 met ers (3 28 ft) in
length.
3.As each connection is made, the Link LED ( on t he sw i tch) cor re sponding to
each port will light to indicat e t hat th e 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
To day, the punch-down block is an integral part of many of the ne wer equipment
racks. It is actually part of the patch panel. Instructions for making connections in the
wiring closet with this type of equipment follows.
1.Attach one end of a patch cable to an available port on the switch, and the other
end to the patch panel.
2.If not already in pl ace, 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 cabl es to simplify future troubles hoo ting. See “Cable Labelin g and
Connection Records ” on page 4-5.
Equipment Rack
(side view)
Network Switch
ES3628EA
26
25
5
678910
13 1817162120192423
1234
11121514
22
Console
Console
Power
2526 27 28
Power
ID
Master
RPS
RPU
Link
Diag
Diag
Stack
27
28
C
4
2
5
4
E
S
4-2
Punch-Down Block
Patch Panel
Wall
Figure 4-2 Network Wiring Connections
Fiber Optic SFP Devices
4
Fiber Optic SFP Devices
An optional SFP transceiver (100BASE-FX, 100 0BA SE- SX, 1000BASE- LX or
1000BASE-LH) can be used for a bac kbone connection between switch es, or for
connecting to a high-speed server.
Each multimode fiber opti c po rt requires 50/125 or 62.5/125 m ic ro n m ul timode 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
Note: When selecting a fiber SFP device, considering safety, please make sure that it
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.
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
4.Check that the fiber terminators are cle an. You can clean the cable plug s by
5.Connect one end of the cable to the LC port on the switch and the other end to
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.
wiping them gently with a cl ean tissue or cotton ball moi stened with a little
ethanol. Dirty fiber term inat or s on fiber cables will impair the qual i ty of the light
transmitted through th e cable and lead to degraded pe rf or m ance on the port.
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
4-3
Making Network Connections
4
6.As a connection is made, check the Link LE D on the switch corresponding t o
the port to be sure that the connection is valid.
100BASE-FX fiber optic ports operate a 100 Mbps full duplex. 10 00BASE-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 maxi m um
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 (re peaters) to your network, please follow the connecti vity ru le s
listed in the manuals for these products. However, note that because switches break
up the path for connected devices into separ ate collision domains, you should not
include the switch or connected cabling in your ca lcul at i ons for cascade length
involving other device s.
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 tha t for all cr itical connections, or any ne w cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e specification includes test parameters t hat ar e only recommendations
for Category 5. Therefor e, the firs t ste p in pr eparing existing Category 5 cab ling fo r
running 1000BASE-T is a sim pl e t est of th e cable installation to be sure that it
complies with the IEEE 802. 3- 2002 (formerly IEEE 802.3ab) s tanda rd s.
1000 Mbps Gigabit Ethernet Collision Domain
Table 4-1 Maximum 1000BASE-T Gigabit Ethernet Cable Length
Cable TypeMaximum Cable LengthConnector
Category 5, 5e, 6 100-ohm UTP or STP100 m (328 ft)RJ-45
Table 4-2 Maximum 1000BASE-SX Gigabit Ethernet Cable Length
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 th e opposing ends of
cables and to record where each cable is connected. Doing so will enable you to
easily locate inter-con nected devices, isolate faul ts an d change your topology
without need for unnecessary time consumpti on .
To best m anage the physical implementations of your network, fol low th ese
guidelines:
• Clearly label the opposing ends of each cable.
• Using your building’s flo or pla ns , dr aw a map of the location of all
network-connected equipment. For each piece of eq ui pm ent, identify the devices
to which it is connected.
4-5
Making Network Connections
4
• Note the length of each ca ble and the maximum cable len gt h supported by the
switch ports.
• For ease of understandi ng, use a location-based key w hen assigning prefixes to
your cable labeling.
• Use sequential number s f or cables that originate from the sam e equipment.
• Differentiate betwee n racks by naming accord in gly.
• Label each separate pie ce 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
SymptomAction
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• Internal power supply has failed. Contact your local dealer for assistance.
Diag LED is Amber • 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 LEDRPS LEDStatus
GreenGreenInternal power functioning normally; RPS is present.
GreenAmberInternal power functioning normally; RPS plugged in but faulty.
GreenOffInternal power functioning normally; RPS not plugged in.
AmberGreenInternal power faulty; RPS delivering power.
OffOffBoth internal power and RPS unplugged or not functioning.
Power and Cooling Problems
If the power indicator does not turn on when the power c or d is pl ugged in, you may
have a problem with the pow er outlet, power cord, or inter nal power supply.
However, if the unit powers off after running for a while, check for loose power
connections, power lo sses or surges at the power out let , an d verify that the fans on
the unit are unobs tr ucte d and runn ing pri or to shu td own. If y ou s ti ll c annot is olat e t he
problem, then the intern al pow er supply may be defectiv e.
A-1
Troubleshooting
A
Installation
Verify that all system components have bee n pr operly 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 sur e th at all the oth er
components are functioning properly.
In-Band Access
You can access the man agement 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 co nf ig ur e t he switch with a valid IP addres s,
subnet mask, and defau lt gateway. If you have trouble establishing a link to the
management agent, check to see if you have a valid net w or k connection. Then
verify that you entered the correct IP address. Also, be sure the port through which
you are connecting to th e swi t ch has not been disabled. If it has not been disabled,
then check the network cabling that runs betwee n 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
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 conn ections the twisted-pair cable must have four
pairs of wires. Each wire pair is identi fie d by two different colors. For exampl e, 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
The figure below illustra tes how the pins on the RJ-45 connector are numbered. B e
sure to hold the connect or s in th e same orientation when attaching t he wires to the
pins.
switch. Use only twisted-pair cables with RJ-45 connectors that conform with
FCC standards.
8
1
Figure B-1 RJ-45 Connector Pin Numbers
8
10BASE-T/100BASE-TX Pin Assignments
Use unshielded twisted-pair (UTP) or shielded twisted-pair (STP) cable for RJ-45
connections: 100-oh m Ca te gory 3 or better cable for 10 Mbps connections, or
100-ohm Category 5 or better cable for 100 Mbps connections. Also be sure
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 us e s trai ght -thr ough ca bles for all net wor k con nec tion s to PCs or s erve rs, 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 R J-45 port on this switch, yo u can use either
straight-through or c ro ssover cable.
that the
B-1
Cables
B
Table B-1 10/100BASE-TX MDI and MDI-X Port Pinouts
PinMDI Signal NameMDI -X Sig nal Na me
1Transmit Data plus (TD+)Receive Data plus (RD+)
2Transmit Data minu s (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 usedNot used
Straight-Through Wiring
If the twisted-pair cable is to join two ports and only one of the ports has an inter nal
crossover (MDI-X), th e two pairs of wires must be straigh t-t hr ough. (When
auto-negotiation is enabled for any RJ-45 port on t hi s swi t ch, you can use either
straight-through or c ro ssover cable to connect to an y device type.)
We recommend connecti ng all four wire pairs as shown in the fol low i ng diagram to
ease a future upgrade to Giga bi t Eth er net .
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 labele d wi th an
“X” (MDI-X) or neither port is labeled with an “X” (MDI), a crossover must be
implemented in the wiring . ( Wh en auto-negotiation is enabl ed f or any RJ-45 port on
this switch, you can use either straight-through or crossover cable to connect to any
device type.)
We recommend connecti ng all four wire pairs as shown in the fol low i ng diagram to
ease a future upgrade to Giga bi t Eth er net .
B-2
Twisted-Pair Cable and Pin Assignments
B
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 yo u ca n use
straight-through cab les f or all net work connections to PCs or se rv er s, or t o 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 ar e 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
PinMDI Signal NameMDI-X Signal Name
1Bi-directional Data One Plus (BI_D1+)Bi-directional Data Two Plus (BI_D2+)
2Bi-directional Data One Minus (BI_D1-)Bi-directional Data Two Minus (BI_D2-)
3Bi-directional Data Two Plus (BI_D2+)Bi-directional Data One Plus (BI_D1+)
4Bi-directional Data Three Plus (BI_D3+)Bi-directional Data Four Plus (BI_D4+)
5Bi-directional Data Three Minus (BI_D3-)Bi-directional Data Four Minus (BI_D4-)
6Bi-directional Data Two Minus (BI_D2-)Bi-directional Data One Minus (BI_D1-)
7Bi-directional Data Four Plus (BI_D4+)Bi-directional Data Three Plus (BI_D3+)
8Bi-directional Data Four Minus (BI_D4-)Bi-directional Data Three Minus (BI_D3-)
B-3
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 tha t for all cr itical connections, or any ne w cable installations,
Category 5e (enhanced Category 5) or Category 6 cable should be used. The
Category 5e specification includes test parameters t hat ar e only recommendations
for Category 5. Therefor e, the firs t ste p in pr eparing existing Category 5 cab ling fo r
running 1000BASE-T is a sim pl e t est of th e 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/EI A- 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 incl ude 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 th e te st param e te rs fo r
1000BASE-T, there are basically three measures that can be applied to try and
correct the problem:
1.Replace any C ategory 5 patch cables with hig h- per f or m ance Category 5e or
Category 6 cables.
2.Reduce the number of connectors used in the link.
3.Reconnec t so m e of th e 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 multim ode (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 ad di tion to the types listed above. All opt ic al fiber
components and installation pra ct ices must meet applicable bui ldi ng and safety
codes.
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 connect or, 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, Catego ry 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, spe ed, 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
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 connec tion for 14-pin redundan t po wer 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 Dupl ex: 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 ou t-of- band
C-2
Standards
IEEE 802.1D (Bridging)
IEEE 802.3-2002
Ethernet, Fast Ethernet, Gigab it Ethernet
Full-duplex flow control
Link Aggregation Contro l Protocol
ISO/IEC 8802-3
Compliances
Emissions
FCC Class A
Industry Canada Clas s A
EN 55022 (CISPR 22) Class A
EN 61000-3-2/3
VCCI Class A
C-Tick - AS/NZS 3548 (1995) Class A
IEEE 802.3 specification for 10 M bps Et hernet over two pairs of Category 3, 4, o r 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 fib er cable.
100BASE-TX
IEEE 802.3u specification for 10 0 M bps Fast Ethernet over two pairs of Categor y 5
UTP cable.
1000BASE-LH
Specification for long-haul Gigabit Ethe rn et ove r t wo st ra nds of 50/125, 62.5/125 or
9/125 micron core fiber cable.
1000BASE-LX
IEEE 802.3z specification for G ig ab it Et her net over two strands of 50/125, 62. 5/125
or 9/125 mic r on core fiber ca ble.
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 fo ur wire pair s) .
Auto-Negotiation
Signalling method allow ing each node to select its optimum operational mode (e.g.,
speed and duplex mode ) ba sed on the capabilities of the node to which it is
connected.
Bandwidth
The difference between the hi ghest and lowest frequencies available for network
signals. Also synonymous with wire speed, the ac tual speed of the data
transmission along the cable.
Collision
A condition in which packets transmitted over the cable interfe re
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 Ethe rn et , Fa st Eth er net , or Giga bi t Eth er net .
End Station
A workstation, server, or other device that does no t for w ar d traffic .
Ethernet
A network communication system developed and standardized by DEC, Intel, and
Xerox, using baseban d transmission, CSMA/CD access, logical bus topol ogy, and
coaxial cable. The successor IEEE 802.3 standard prov i des for in t egr at i on int o t he
OSI model and extends the physical layer and media with repeaters and
implementations that oper at e on fiber, thin coax and twisted-pair cable.
Fast Ethernet
A 100 Mbps network communication system based on Et he rnet 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 t w o network devices to transmit and receive
concurrently, effectively doubling the bandwidth of t hat link .
IEEE
Institute of Electr i cal and Electronic Engineers.
IEEE 802.3
Defines carrier sense multiple access with collision detection (CSMA/CD) access
method and physica l lay er specifications.
IEEE 802.3ab
Defines CSMA/CD ac cess method and physica l layer specifications for
1000BASE-T Gigabit Ethernet.
IEEE 802.3u
Defines CSMA/CD ac cess method and physica l layer specifications for
100BASE-TX and 100BASE-FX 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 use d 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 pr ot ocol that governs access t o the t ra nsmission
medium, facilitating the exchange of data between networ k nodes.
MIB
An acronym for Manage m ent Info rm a t io n 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 dia m et er ) o f the f ib er. Modal bandw idth 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 do mains or LAN segments.
TIA
Te lecommunications Indu stry Association
Glossary-3
Glossary
Transmission Control Protocol/Internet Protocol (TCP/IP)
Protocol suite that include s TCP as the primary transport pr ot oc ol , an d I P as t he
network layer protocol.
UTP
Unshielded twisted-pair cable.
Virtual LAN (VLAN)
A Virtual LAN is a collection of network nodes that share the same co llisi on domain
regardless of their physi cal l oca tion or connection point in the netw ork. A VLAN
serves as a logical work gr oup with no physical barrier s, allo w in g us er s to share
information and resourc es as though located on the same LAN.
Glossary-4
Index
Numerics
10 Mbps connectivit y ru le s 4-5
100 Mbps connectivity r ules
1000 Mbps connecti vity ru le s
1000BASE-T
pin assignments B-3
1-2
ports
100BASE-TX
pin assignments B-1
ports
1-2
10BASE-T
pin assignments B-1
1-2
ports
A
adhesive feet, attaching 3-5
air flow requirements
applications