Black Box LGB6000SC-004, LGB6001C, LGB6000SC-001, LGB6026A, LGB6050A User Manual

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LGB6026A LGB6000SC-001

LGB6050A LGB6000SC-004 LGB6001C

Gigabit L3 Managed Switch with 10G Uplinks, 24-Port or 48-Port

This smart, stackable switch offers 10-Gbps uplinks plus full SNMP and Web management.

Customer

Support

Information

Order toll-free in the U.S.: Call 877-877-BBOX (outside U.S. call 724-746-5500) FREE technical support 24 hours a day, 7 days a week: Call 724-746-5500 or fax 724-746-0746 Mailing address: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018

Web site: w ww.blackbox.com • E-mail : info@blackbox.com

724-746-5500 | blackbox.com

Trademarks Used in this Manual

Black Box and the Double Diamond logo are registered trademarks of BB Technologies, Inc.

Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners.

Page 2

724-746-5500 | blackbox.com

LGB6026A GIGABIT ETHERNET SWITCH: LGB6050A GIGABIT ETHERNET SWITCH

Layer 3 Stackable Gigabit Ethernet Switch Layer 3 Stackable Gigabit Ethernet Switch

with 20 10/100/1000BASE-T (RJ-45) Ports, with 44 10/100/1000BASE-T (RJ-45) Ports,

4 Gigabit Combination Ports (RJ-45/SFP), 4 Gigabit Combination Ports (RJ-45/SFP),

2 10-Gigabit Extender Module Slots, 2 10-Gigabit Extender Module Slots,

and 2 Stacking Ports and 2 Stacking Ports

LGB6001C LGB6000SC-001 LGB6000SC-004

10G Uplink Module 1-ft. (0.3-m) Stacking Cable 4-ft. (1.2-m) Stacking Cable

We‘re here to help! If you have any questions about your application

or our products, contact Black Box Tech Support at 724-746-5500

or go to blackbox.com and click on “Talk to Black Box.”

You’ll be live with one of our technical experts in less than 30 seconds.

724-746-5500 | blackbox.com

Page 3

NS TALLATION

UIDE

LGB6026A GIGABIT ETHERNET SWITCH

Layer 3 Stackab le Gigabit Ether net Switch with 20 10/100/1000BASE-T (RJ-45) Ports, 4 Gigabit Combination Ports (RJ-45/SFP), 2 10-Gigabit Extender Module Slots, and 2 Stacking Ports

LGB6050A GIGABIT ETHERNET SWITCH

Layer 3 Stackab le Gigabit Ether net Switch with 44 10/100/1000BASE-T (RJ-45) Ports, 4 Gigabit Combination Ports (RJ-45/SFP), 2 10-Gigabit Extender Module Slots, and 2 Stacking Ports

LGB6026A LGB6050A

COMPLIANCES AND SAFET Y STATEMEN TS

FCC - CLASS A

This equipment has been tested and found to comply with the limits for a Class A digital devic e, pur suan t to part 1 5 of th e FCC R ules. Th ese limits are desi gned to provide reasonable pro tection agai nst h armful int erference when the equipment is operated in a commercial environment. T his equipment generates, uses, and can radiat e radio frequency energy and, if not inst al l ed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Yo u ar e c au tion ed t h at c hanges or modifications not expressly appr oved 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 1 0 Mbps connections, C at ego r y 5 or bet t er fo r 10 0 Mbps connections, Category 5, 5e, or 6 for 1000 Mbps connections. For fiber optic connections, micron single-mode fiber.

NDUSTRY CANADA - CLASS A

This digi t al appar a tu s do es n ot exc eed the Class A limits for radio no i s e emissions from digital apparatus as set out in the interference-causing equipment s tandard entitled “ Digit al Appar atus,” ICES-0 03 of the D epartm ent of Communications.

Cet appareil num érique respect e les limites de bruits radi oélectriques appl icables aux appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur: “Appareils Numériques,” NMB-003 édictée par le ministère des Communications.

APAN VCCI CLASS A

you

may use 50/125 or 62.5/125 micron multimode fiber or 9/125

– 5 –

OMPLIANCES

AND SAFETY STATEMENTS

ARK DECLARATI O N OF CONFORMANCE FOR EMI AND SAFETY (EEC)

CE M

This information tec h nolo gy equ ipm en t complies with the requirem ents 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 w it hi n c ertain volt age l i mits and the Amendment Directive 93/ 68/EEC. F or t he ev aluation of the compliance with thes e Directives, the following standards were applied:

RFI Emission:

Immunity:

LVD:



 Limit class A according to EN 55022



 Limit class A for harmonic current emission according to EN 61000-3-



 Limitation of voltage fluctuation and flicker in low-voltage supply

system according to EN 61000-3-3



 Product family standard according to EN 55024



 Electrostatic Discharge according to EN 61000-4-2



 Radio-frequency electromagnetic field according to EN 61000-4-3



 Electrical fast transient/burst according to EN 61000-4-4



 Surg e immun it y te s t acc or din g t o EN 61000 - 4-5



 Immunity to conducted disturbances, Induced by radio-frequency

field s: E N 6100 0- 4-6



 Power frequency magnetic field immunity test according to EN 61000-

4-8



 Voltage dips, short interruptions and voltage variations immunity test

accor d ing t o EN 61 000- 4 -11



 EN 60950-1:2001

– 6 –

OMPLIANCES

AND SAFETY

STATEMENTS

AFETY COMPLIANCE

Warning: Fiber Optic Port Safety

When using a fiber optic port, never look at the transmit laser while it

CLASS I

LASER DEVICE

is powered on. A lso , neve r look dir ect ly at th e fibe r TX por t and fibe r cable ends when they are powered on.

Avertissment: Ports po ur fibres optiques - sécuri t é s ur le plan o pt iqu e

Ne regardez jamais le laser tant qu'il est sous tension. Ne regardez

DISPOSITIF LASER

DE CLASSE I

jamais directement le port TX (Transmission) à fibres optiques et les embouts de câbles à fibres optiques tant qu'ils sont sous tension.

Warnhin weis: Faseroptikanschlüsse - Optische Sicherheit

Niemals ein Übertragungslaser betrachten, während dieses

LASERGERÄT DER KLASSE

eingeschaltet ist. Niemals direkt auf den Faser-TX-Anschluß und auf die Faserkabelenden schauen, während diese eingeschaltet sind.

PSE ALARM .3+*051! 

.3+-2.51! . 3+%,3+#$24'2 (/3+.&*051!  )2$3+51! '2" 

                  



– 7 –

OMPLIANCES

AND SAFETY STATEMENTS

OWER 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 eart hed ( groun ded) o utlet to comply w ith

international safety standards.



 Do not connect the unit to an A.C. outlet (power supply) without an earth

(ground) connection.



 The appliance c oupler (th e 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 disco nnect i ng the power cord fr o m the outlet.



 This unit operat es under SE LV (Safety Extra Low Voltage) conditi o ns

according to IEC 60950. The conditions equipment to which it is connected also operates under SELV conditions.

are only

maintained if the

France and Peru only This unit cannot be pow ere d from IT type, this u nit m ust be pow er ed by 230 V (2P+T) vi a an isol a ti o n transformer ratio 1:1, with the secondary connection point labelled Neutral, connected directly to earth (ground).

†

supplies. If your supplies are of IT

†

Impédance à la terre

MPORTANT

set. Check it (read the label on the cable) agains t t he fo ll o wing:

Before making connections, make sure you have the correct cord

– 8 –

OMPLIANCES

AND SAFETY

STATEMENTS

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-conduc tor 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) configuration.

Denmark The supply plug must comply with Section 107-2-D1, Standard

Switzerland The supply plug must comply with SEV/ASE 1011. U.K. The supply plug must comply with BS1363 (3-pin 13 A) and be fitted

Europe The supply plug must comply with CEE7/7 (“SCHUKO”).

DK2-1a o r DK2-5a.

with a 5 A fuse which complies with BS1362. The mains cord must be <HAR> or <BASEC> marked and be of type

HO3VVF3G O .75 (m inim um).

The mains cord must be <HAR> or <BASEC> marked and be of type HO3VVF3G O .75 (m inim um).

IEC- 320 rec ept ac le.

Veuillez lire à fond l'information de la sécurité suivante avant d'installer le Switch:

A VERTISSEMENT: 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.

– 9 –

OMPLIANCES

AND SAFETY STATEMENTS



 La prise s ec t eur doi t s e tr o uver à proximité de l’a ppar eil et son accès doit

être facile. V o us n e pou vez m et tr e l ’a ppar ei l h o rs c i r c uit qu’en débranchant son cordon électri que au niveau de cette prise.



 L’appare il fonctionne à une tension ex trêmemen t basse de sécur ité qui e st

conforme à la norme IEC 609 50. Ces co nd itio ns ne sont maintenues que si l’équipement auquel il est raccordé fonctionne dans les mêmes conditions.

France et Pérou uniquement: Ce groupe ne peut pas êt r e al i men t é pa r un di s po s i tif à impédance à la t er r e. Si vos alimentations sont du type impédance à la terre , ce groupe doit êt r e alimenté par une tension de 230 V (2 P+T) par le biais d’un transformateur d’isolemen t à rapport 1:1, avec u n po i nt s ec o ndai r e de connexion po r t ant l’appellation Neutre et avec raccordement direct à la terre (masse).

Cordon électrique - Il doit être agréé dans le pays d’utilisation

Eta ts-U nis et Canad a: Le c ordo n do it av oir r eçu l ’hom ologat ion de s UL et un c ert ific at de

Danemark: La prise mâle d’alimentation doit respecter la section 107-2 D1 de

Suisse: La prise mâle d’alimentation doit respecter la norme SEV/ASE

Europe La prise secteur doit être conforme aux normes CEE 7/7

la CSA. Les spécifications minimales pour un cable flexible sont AWG No.

18, ouAWG No. 16 pour un cable de longueur inférieure m

ètres.

- type SV ou SJ

- 3 co nducteurs 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) .

la norme DK2 1a ou DK2 5a.

1011.

(“SCHUKO”) LE cordon secteur doit porter la mention <HAR> ou <BASEC> et

doit ê t r e de t ype HO3VV F3 G O . 75 ( m in i m um ) .

– 10 –

OMPLIANCES

AND SAFETY

STATEMENTS

Bitte unbedingt vor dem Einbauen des Switches die folgenden Sicherheitsanweisungen durchlesen:

WARNUNG: Di e In s tall at i on un d der Au s bau des Gerä ts darf nur durch

Fac hpersonal erfolgen.



 Das Gerät sollte nicht an eine ungeerdete Wechselstromsteckdose

angeschlossen werden.



 Das Gerät m uß an ei ne geer dete St ec kdo se an ges c hl ossen werden, welche

die internationalen Sicherheitsnormen erfüllt.



 Der Gerätestecker (der Anschluß an das Gerät, nicht der

Wands tec kdosenst ec ker) muß einen gemäß EN 6 0320 /I EC 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 SEL V-Bedingungen

(Sicherheitskleinstspannung) gemäß IEC 60950. Diese Bedingungen sind nur gegeben, wenn auch die an das Gerä t anges c hl oss enen Geräte unter SELV -Bedingungen betr ieben werden.

Stromkabel. Dies muss von dem Land, in dem es benutzt wird geprüft werden:

Schweiz Dieser Stromstecker muß die SEV/ASE 1011Bestimmungen einhalten. Europe Das Netzkabel muß vom Typ HO3VVF3GO.75 (Mindestanforderung)

sein und die Aufschrift <HAR> oder <BASEC> tra gen. Der Netzstecker muß die Norm CEE 7/7 erfüllen (”SCHUKO”).

– 11 –

OMPLIANCES

AND SAFETY STATEMENTS

ARNINGS AND CAUTIONARY MESSAGES

WARNING: This product does not cont ain any s er vic eabl e user parts. W

ARNING: Installation and removal of the unit must be carried out by

qualified personnel only.

ARNING: 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

ARNING: This switch uses lasers to transmit signals over fiber optic

cable. The lasers ar e c omplia nt w it h the requirem ents o f a Class 1 Laser Product and are inherently eye safe in normal o peration. However, you should never look directly at a transmit port when it is powered on.

electrical hazards

AUTION

measures to prevent el ec trostat ic di s c harge when ha ndling this equipment.

may damage thi s devi c e.

conform to FCC standards.

Wear an anti-static wrist s trap or take other suitable

AUTION

Do not plug a phone jack connector in the RJ-45 port. This

AUTION

Use only twisted-pair cables with RJ-45 connectors that

NVIRONMENTAL STATEMENTS

The manufacturer of this product endeavours to sustain an environmentallyfriendly 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.



 Was te reducti on and s afe dis posal of all harmful un-recyclable by-produc ts.



 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.

– 12 –

OMPLIANCES

AND SAFETY

STATEMENTS

END OF PRODUCT LIFE SPAN

This product is manufactured in such a way as to allow for the recovery and disposal of all included elec tric al end of its life.

compone n ts once

the product has reached the

MANUFACTURING MATERIALS

There are no hazardous nor ozo ne- deplet i ng materials in this product.

DOCUMENTATION

All printed documen ta tion for thi s pr oduct uses biodegra dabl e paper that originates from sustained and managed fo r es ts. The inks used in the printing process are non- t oxic.

– 13 –

OMPLIANCES

AND SAFETY STATEMENTS

– 14 –

ABOUT THIS GUIDE

PURPOSE

This guide details the hardware features of the switch, including the physical and performance-related characteristics, and how to install the switch.

AUDIENCE

The guide is intended for use by network administr at ors who are respo ns i ble for installing and setting up network equipment; consequently, it assumes a basic working knowledge of LANs (Local Area Networks).

CONVENTIONS

The following conventions are used throughout this guide to show information:

NOTE: Emphasizes important information or

related features or instructions.

AUTION

Alerts you to a potential hazard that could cause loss of data,

or damage the system o r equ i pment.

WARNING: Alerts you to a potential haz ard that could cause personal

injury.

ELATED PUBLICATIONS

The following publication gives specific information on how to operate and use the management functions of the switch:

The Management Guide

Also, as part of the switch’s software, there is an online web-based help that describes all management related features.

– 15 –

calls your

attention to

ABOUT THIS

UIDE

EVISION HISTORY

This section summarizes the changes in each revision of this guide.

MAY 2010 REVISION

This is the first revision of this guide.

– 16 –

CONTENTS

COMPLIANCES AND SAFETY STATEMENTS ABOUT THIS GUIDE CONTENTS TABLES FIGURES INTRODUCTION

Overview Description of Hardware Features and Benefits

NETWORK PLANNING

Introduction to Switching Application Examples Application Notes

INSTALLING THE SWITCH

Selecting a Site Ethernet Cabling Equipment Checkl ist Mounting Installing an Optional Module into Installing an Optional SFP Transceive r Connecting Switches in a Stack Connecting to a Power Source Connecting to the Console Port

the Switch

23 25 30

33 34 39

41 42 43 44 47 48 49 51 52

– 17 –

ONTENTS

AKING NETWORK CONNECTIONS

Connecting Network Devices Twisted-Pair Devices Fiber Optic SFP Devices 10 Gbps Fiber O pt i c Co n necti o ns Connectivity Rules Cable Labeling and Connection R ecor ds

TROUBLESHOOTING

Diagnosing Switch Indicators Power and Cooling Problems Installation In-Band Access Stack Troubleshooting

CABLES

Twisted-Pai r Cable and P i n Assi gnmen ts Fiber Standar ds

SPECIFICATIONS

Physical Characteristics Switch Featu r es Management Features Standards Compliances 10GBASE Extender Module (SFP+)

GLOSSARY INDEX

55 55 58 61 63 65

67 69 69 69 70

71 75

77 79 80 80 81 81

– 18 –

TABLES

Table 1: Table 2: Table 3: Table 4: Table 5: Table 6: Table 7: Table 8: Table 9: Table 10: Maximum 10 00BASE-SX Gigabi t Ethernet Cable Lengths Table 11: Table 12: Table 13: Table 14: Table 15: Table 16: Table 17: Table 18: Table 19:

Port Status LEDs 26

System Status LEDs 27 Supported SFP+ Transceivers 29 Module LEDs 29 Serial Cable Wiring 52 Maximum 1000 BASE-SX Gigabit Ether net Cable Lengths Maximum 10GBASE-LR 10 Gigabit E th er net Cable Length

Maximum 10GBASE-ER 10 Gigabit Ethernet Cable Lengt h

Maximum 1000 BASE-T Gigabi t Ethernet Ca ble Length 64

Maximum 10 00BASE-LX Gigabi t Ethernet Cable Length 64 Maximum 10 00BASE-LH Gigabi t Ethernet Cable Length 64 Maximum Fast Ethernet Cable Lengths 65 Maximum Ethernet Cable Length 65 Troubleshooting Chart 67 Power/RPS LEDs 68 10/100BASE-TX MDI and MDI-X Port Pinouts 72 1000BASE-T MDI and MDI-X Port Pinouts 74 Fiber Standar ds 75

– 19 –

63 64

ABLES

– 20 –

FIGURES

Figure 1: Figure 2: Figure 3: Figure 4: Figure 5: Figure 6: Figure 7: Figure 8: Figure 9: Figure 10: Figure 11: Figure 12: Figure 13: Figure 14: Figure 15: Figure 16: Figure 17: Figure 18: Figure 19: Figure 20: Figure 21: Figure 22: Figure 23: Figure 24: Figure 25: Figure 26: Figure 27:

Front Panels Rear Panel Port LEDs System LEDs Power Supply Sockets Single-Por t 10GBASE Mo dule (SFP+) Collapsed Ba ckbone Network Aggregation Plan Remote Connections with Fiber Cable Making VLAN Connec tions IP Routing for Unica s t Traffi RJ-45 Connections Attaching the Brackets Installing the Switch in a Rack Attaching t he Adhesive Feet Installing an Optional Module Inserting an SFP Transceiver into a Slot Making Stacking Connections Power Socket Serial Port (RJ-45) Pin-Out Making Twisted-Pair Connections Network Wiring Connections Making Fiber Port Connections Connecting to an SFP+ Transceiver RJ-45 Connector Pin Numbers Straight-through Wiring Crossover Wiring

24 24 26 27 28 29 34 35 36 37 38 42 45 45 46 47 48 50 51 52 56 58 59 62 71 73 73

– 21 –

IGURES

– 22 –

1 INTRODUCTION

OVERVIEW

The

LGB6026A

2, 3) with 24/48 10/100/1000BASE-T ports, four of which are combination

ports

that are shared with four SFP transceiver slots (see Figure 1, Ports 2124/45-48). The rear panel provides two slots for single-port 10 Gigabit Ethernet hot-swappable expansion modules (LGB6001C), and two stacking ports. Units can be stacked up to eigh t h i gh 48 Gbps stack backplane.

The switches include an SNMP-based management agent embedded on the m ain board, whi c h supports bot h in-ba nd a nd o u t-of-band acc e s s fo r m an agi ng the stack.

These switches can easily tame your network with full Protocol , M ul t icas t Switching, Vi r tu al L ANs, an d IP r outi ng. I t brings order to poorly perfo rm i n g networ ks by segregating t hem i nt o s epar ate br o adc a s t domains with IEEE 802.1Q compliant VLANs, empowers multimedia applications with multicast switching and CoS services, and eliminates conventional router bottlenecks.

These switches c an be used t o au gment or completel y r eplace 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, these switches VLANs.

1. If an SFP transceiver is plugged in, the corresponding RJ-45 port is disabled for ports 21-24 on LGB6026A or ports 45-48 on LGB6050A.

and

LGB6050A

can significantly impr ove the throughput between IP segments or

Switches are intelligent multilayer switches (Layer

through the

built-in stacking po rts that provide a

support for

– 23 –

Spanning Tree

CHAPTER 1 | Introduct ion

Overview

Figure 1: Front Panels

LGB6050A

LGB6026A

1 2 3 4 5 6 7 8 9 10 11 12 1 3 14 15 16 17 18 19 20 21 22 23 24

Figure 2: Rear Panel

Power Socket

Select

Stack ID

Console

Serial Console Port

Port Status LEDs

10/100/1000 Mbps RJ-45 Port s System Status LEDs

21 22 23 24 S tack ID Maste r

SFP Slots

SWITCH

These Gigabit E t hernet s w it c hes employ a wire-speed, non -bloc kin g s w i tchi ng fabric. This permits simultaneous wire-speed transport of multiple packets at low latency on all ports. The switches also feature full-duplex capability on all ports, which effectively doubles the bandwidth of each connection.

For communications within the same VLAN, they use store-and-forward switching to ensure maximum data integrity. With store-and-forward s witching, t he entire packet must be r ec ei ved into a buffer and checked for validit y before being forwarded. T h is pr even ts errors from being propagated t hr o ughout t h e netwo rk.

These switches include built-in stack ing ports that enable up to eight units to be connected toget her thr ou gh a 48 Gbps stack backplane. T h e switch stac k can be managed from a mast er u ni t usin g a sin gle I P a ddr ess.

These switches al so include t wo s lots on the rear panel fo r slide-in single-por t 10GBASE modules with SFP+ transceivers.

Redundant Power Socket Module Slots Stacking Ports

RCHITECTURE

commun icatio ns

between different VL ANs, these

– 24 –

switches use

IP routing. For

CHAPTER 1 |

Description of

Introduction

Hardware

NETWORK MANAGEMENT

These switches contain a comprehensive array of LEDs for “at-a-glance” monitoring of network and port status. They also include a management agent that allows you to configure or monitor the switch using its embedded management software, or via SNMP applications. To manage each switch, you can make a direct connection to the console port (out-of-band), or you can manage the switches through a network connection (in-band) using Telnet, the on-board web agent, or SNMP-based network management software.

For a detailed desc ription of the management fea tures, refer to the Management Guide.

PTIONS

ESCRIPTION OF HARDWARE

10/100/1000BASE-T

The switches contain 24/48 RJ-45 ports that operate at 10 Mbps or 100 Mbps, half or full duplex, or at 1000 Mbps, full duplex. Because all ports on these switches support automatic MDI/MDI-X operation, you can use straight-through cables for all network connections to PCs or servers, or to other switches or hubs. (See “1000BASE- T Pin Assignments” on page 74.)

Each of these ports support auto-negotiation, so the optimum transmission mode (half or full duplex), and data rate (10, 100, or 1000 Mbps) can be selected automatically. If a device connected to one of these ports does not support aut o -negot ia tion , the communication m o de of that port can be configured manually.

SFP TRANSCEIVER

The Small Form F acto r Pl uggabl e ( SFP ) transceiver slots are shared with fo ur of the RJ-45 ports (ports 21–24 for the LGB6026A and ports 45–48 for the LGB6050A). In its default configuration, if an SFP transceiver (purchased separately) is installed in a slot and has a valid link on its port, the associated RJ-45 por t i s di s abl ed and cann ot be us ed. T h e s witch c an al so be c o nfi gu red to force the use of an RJ -4 5 po rt o r SFP s lot, as requi red.

LOTS

ORTS

– 25 –

CHAPTER 1 | Introduct ion

Descript ion of Hardwar e

10 GIGABIT ETHERNET MODULE

These switches include two slots on the rear panel for hot-swappable single-port 10GBASE module s wit h SFP+ transcei vers. Refer to “Optional

Modules” on page 2 9 for more information on this module and the supported

10G transceivers.

STACKING

Each unit includes t w o sta c king po r ts t ha t pr o vi de a 48 Gbps hi gh- s peed serial stack backplane connection. Up to eight 24-port or 48-port switches can be connected together using optional stacking cables (LGB6000SC-001 or LGB6000SC-004). Not e t hat th e 24 - por t and 48-port swi tches can be mixed in the same stack. The Stack Master button enables one switch in the stack to be

selected as

ORTS

the Master unit for managing the entire stack.

PORT AND SYSTEM STATUS LEDS

These switches include a display panel for key system and port indications that simplify installation and network troubleshooting. The LEDs, which are located on the f following tables.

Figure 3: Port LEDs

ront panel

for easy viewing, ar e s hown bel o w and described i n the

1 2 3 4 5 6 7 8 9 10 11 12 13 14 1

LOTS

Port Status LEDs

Media Extender

Table 1: Port Status L EDs

LED Condition Status

Link/ Activity/Speed

On/Flashing Amber Port has a valid link at 10 or 100 Mbps. Flashing

On/Fl a shi n g Gr ee n Port ha s a valid li nk at 1000 Mbp s . Flas h ing

Off The link is down.

indicates activity.

– 26 –

CHAPTER 1 |

Description of

Introduction

Hardware

Figure 4: System LEDs

System Status LEDs

Stack Master Power

Stack

Link

Table 2: System Status LEDs

LED Condition Status

Power Green Internal power is operating normally.

Diag Flashing Green

RPS Green Redundant power supply is receiving power.

Stack Master

Amber Internal power supply failure. Off Power off or failure.

Green Amber System self-diagnostic test has detected a fault.

Amber Off Redundant power supply is off or not plugged in.

Green Switch is the Master unit of the stack. State may

Flashing Green

Amber Switch is operating as a Slave unit in the stack.

Flashing Am ber

Off System in standalone mode.

Module Diag

Stack ID Master

RPS

System self-diagnostic test in progress.

System self-diagnostic test successfully completed.

Fault in redundant power supply , including thermal or fan failure.

include topology discovery, IP assignment, or normal operations.

Switch is the Master unit of the stack, system is initializing.

System in Master arbitration/election state.

Select

– 27 –

Console

CHAPTER 1 | Introduct ion

Descripti on of Hardware

Table 2: Syste m St at us LED s (Continue d)

LED Condition Status

Stack Link

Module Green

Stack ID

Green Uplink and downlink operating normally.

Flashing Green Flashing Am ber

Off No stacking link present.

Amber An expansion module is installed but has failed. Off There is no module inst alled.

1-8

OPTIONAL REDUNDANT POWER

The switch supports an optional Redundant Power Supply (RPS), that can supply power to the switch in the event the internal power s uppl y fai l s .

POWER SUPPLY

There are two po w er sockets on the rear panel of power socket is for the AC power cord. The socket labeled “RPS” is for the optional

Figure 5: Power Supply Sockets

Off In standalon e mode.

OCKET

Redundant Power

Supply (RPS).

Uplink has failed. Downlink has failed.

An expansion module (LGB6001C) is installed and o p e r at i n g n orm a l ly.

Indicates the switch stack ID. The M aster uni t is numbe red 1. (Not e tha t If t he master unit fails and a backup unit takes over, the stack IDs do not change.)

Slave units are numbered 2-8.

UPPLY

each switch.

The standard

Power Socket

Redundant Power Socket

– 28 –

PTIONAL MEDIA EXTENDER MODULES

CHAPTER 1 |

Description of

Introduction

Hardware

10GBASE SFP+ MODULE

Figure 6: Single-Port 10GBASE Module (SFP+)

The module’s SFP+ slot supports standard 10 Gigabit Ethernet (10G) SFP+ transceivers. The 10GBASE transceivers operate at 10 Gbps full duplex with support for flow control.

Table 3: S upported SFP+ T ransceive rs

Media Standard Vendor Part Number Maximum Distance

1GBASE-SR

1GBASE-LR

Black Box

LSP421

LSP422

300 m

10 km

EXTENDER MO DULE LEDS

The optional 10GBASE slide-in module includes its

own integrated

on the module’s front panel. The following table describes the LEDs.

LED indicators

Table 4: Module LEDs

LED Condition Status

Link/Activity On/Flashing G reen

Off The link is down.

Port has a valid link at 10 Gbps. Flashing indicates activity.

– 29 –

CHAPTER 1 | Introduct ion

Feature s and Benefit s

FEATURES AND BENEFITS

ONNECTIVITY



 24 or 48 10/100/1000 Mbps ports for easy Gigabit Ethernet integration and

for protection of your investment in legacy LAN equipment.



 Auto-negotiatio n enables each RJ-45 port

optimum communication mode (half or full duplex) if this feature is supported by t he at tach ed devi c e; otherwise the por t c an be confi gur ed manually.



 RJ-45 10/100/1000BASE-T ports support auto MDI/MDI-X pinout selection.



 Unshielded ( U TP) c abl e s uppo r t ed o n a l l RJ- 45 po r ts : Category 3 or better

for 10 Mbps connections, Category 5 or better for 100 Mbps connections, and Category C at ego r y 5, 5e, 6 or better for 1 00 0 M bps connections.



 IEEE 802.3-2005 Ethernet, Fast Ethernet, Gigabit Ethernet, and IEEE

802.3ae 10 Gigabit Ethernet compliance ensures compatibility with standards-based hubs,



 Provides s tacki ng capa bilit y vi a high-speed ser ial po rts with 48 Gbps

stacking ba ndw i dth . U p to 8 units can be stacked together.

network cards

to automa tica lly

and switches from any vendor.

select the

XPANDABILITY



 Supports 1000BASE-SX, 1000BASE-LX, and 1000BASE-LH SFP transceivers.



 Optional 10GBASE single-port expansion module with an SFP+

transceiver slot (LGB6001C).

ERFORMANCE



 T r ans parent bri dging.



 Aggregate duplex bandwidth of up to 88 Gbps for the LGB6026A or

136

Gbps for the LGB6050A.

– 30 –

CHAPTER 1 |

Feature s and

Introduction

Benefits



 Switching table with a total of 16K MAC address entries and 8K IPv4

address entries or 4K IPv6



 Provides store-and-forwar d switching fo r i ntra-VLAN traffi c , a nd I P r o ut i ng

for inter-VLAN traffic .



 Supports wire-speed switching at layer 2, and wire-speed routing at layer 3.



 Broadcast storm control.

address entries

ANAGEMENT



 “At- a-glance” LEDs for easy troubleshooting



 Network management agent:



 Manages switch (or entire stack) in-band or out-of-band



 Supports console, Telnet, SSH, SNMP v1/v2 c/v3, RM ON (4 groups) and

web-based int erfac e



 Slave units pro vi de backup stac k m an agement .

– 31 –

CHAPTER 1 | Introduct ion

Feature s and Benefit s

– 32 –

2 NETWORK PLANNING

INTRODUCTION TO SWITCHING

A network switch allows simultaneous transmission of multiple packets via noncrossbar switching. This means that it can partition a network more efficiently than bridges or r outers. T hese swi tches have, ther efore, been recogn ized as one of the most impo rt a nt building blo c ks fo r t o day’s networ ki ng t ec h no logy.

When perform ance bottlenecks ar e c aused by c on gest i on at the network acc ess point (such as the network card for a high-volume file server), the device experiencing c on gestio n ( s erver, pow er u s er o r hu b) can be attached directl y to a switched po rt. And, by u sin g full- duplex mode, th e bandwidth of the dedic ated segment can be do ubl ed to

When networks ar e ba s ed on repeater (hub) technolo gy, the dist ance between end stations is limited by a maximum hop count. However, a switch turns the hop count bac k t o zero . So subdivi di ng the network into s mall er and more manageable segments, and linking them to the larger network by means of a switch, removes this limitation.

A switch can be easily configured in any Ethernet, Fast Ethernet, Gigabit Ethernet, o r 1 0G Ethe rn et net w ork t o significantly boo s t ba ndwidt h while using conventional cabling and network cards.

maximize throughput

– 33 –

CHAPTER 2 | Network Planning

Application Examples

APPLICATION EXAMPLES

The Gigabit Ethernet Switches ar e no t onl y desi gned to segment your net work, but also to provide a wide range of options in setting up network connections and linking VLANs o r

IP subnets.

Some typical applications are described below.

COLLAPSED

The Gigabit Ethernet Switches are an excellent choice for mixed Ethernet, Fast Ethernet, and Gigabit Eth ernet ins tallations wher e significant growth is expected in the near future. In a basic stand-alone configuration, it can provide direct fullduplex connections for up to 24/48 workstations or servers. You can easily build on this basic configuration, adding direct full-duplex connections to workstations or servers. When th e time hub or switc h usi ng one of th e Gigabit Et hernet ports built i nto the fro nt panel, a Gigabit Ethernet port on a plug-in SFP trans c eiver, or a 10G transceiver o n an optional module.

ACKBONE

comes for

further expansion, just connect to another

In the figure below, the 48-por t Gigabi t Eth ernet Sw itch is operating a s a collaps ed bac kbo ne for a small L AN. I t i s provi din g dedicated 1 0 Mbps fullduplex connec t io ns to workstation s and 100 Mbps fu ll - dupl ex connecti o ns to power users, a nd 1 Gbps full - dupl ex connections to servers.

Figure 7: Collapsed Backbone

...

Servers

1 Gbps

Full Duplex

orkstations

W 100 Mbps Full

Duplex

orkstations 10 Mbps Full Duplex

– 34 –

CHAPTER 2 | Network

Application

Planning

Examples

NETWORK AGGREG ATION

With 24 or 48 parallel bridgin g p orts (i.e ., 24 or 48 distinct collision domain s), a Gigabit swit ch sta ck can colla pse bridged node, in c rea s i ng overall bandw idt h a nd t hrou ghpu t.

In the figure below , th e 1 0/ 1 00 /100 0BASE -T ports i n a stack of 48-por t Gi gabi t Ethernet switches are providing 1000 Mbps connectivity through stackable switches. In addition, the switches are also connecting several servers at 10 Gbps.

Figure 8: Network Aggregation Plan

10/100/1000

... ...

Mbps

LAN

a complex

Segments

– 35 –

network down into a single efficient

Server Farm

CHAPTER 2 | Network Planning

Application Examples

REMOTE CONNECTIONS WITH FIBER

Fiber optic t ec h no l o gy allows for l o nger c abl i n g t ha n a ny o t her 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 allows a switch stack 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 floor s in t he s ame bu i ldi ng a nd a 10GBASE-LR module can be us ed for high-bandwidth core connections between buildings in a campus setting. For long-haul connections, a 1000BASE-LH SFP tr ansceiver can be used to reach another site up to 70 kilometers away.

The figure below illustrates three Gigabit Ethernet switch stacks interconnecting multiple segments with fiber cable.

Figure 9: Remote Connections with Fiber Cable

Headquarters

ABLE

1000BASE-LX SMF (5 kilome ters)

link up

to 70 km. This

arehouse

Server Farm

Remote

1000BASE-SX MMF

meters)

(500

Switch

... ...

Remote

10/100/1000 Mbps Segments

Switch

1000BASE-LX SM F (5

kilometers)

– 36 –

Research &

...

Development

...

CHAPTER 2 | Network

Application

Planning

Examples

MAKING VLAN

These switches support VLANs which can be used to network no des into separate broa dcast dom ains. VLANs co nfine broadcas t traffic to the originating group, This provides a more secure and cleaner network environment.

VLANs c an be bas ed on untagged por t gr o ups , or traffic c an be expl i c i tl y tagged to identify the VLAN gro u p t o wh i c h it belongs. U nt agged VLANs can be u s ed for small networks attached to a single switch. However, tagged VLANs should be used for larger networks, and all the VLANs assigned to the inter-switch links.

These switches also support 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

At Layer 3, VL ANs are us ed t o creat e an IP int erface, where one or more po rt s are assigned to the same IP segment. Traffic i s automatically ro ut ed between different IP segment s on protocols.

Figure 10: Making VLAN Co nnec t ions

R&D

VLAN 2

Testing

OTE: When connecting to a switch that does not support IEEE

802.1Q VLAN ta gs, us e untagged port s.

ONNECTIONS

and can

time

if any link in the spanning tree fails.

the same

VLAN 1

Tagged

Ports

Finance

VLAN 3

VLAN

eliminate broadcast storms in large networks.

switch, without any need to configure routing

Untagged Ports

Marketing

VLA N

una w are

switch

– 37 –

Finance

VLAN 3

organize any

Tagged Por

group of

R&D

VLAN 1

VLAN 2

VLA N aware switch

esting

CHAPTER 2 | Network Planning

Application Examples

USING LAYER 3

VLANs can significantly enhance network performance and security. However , if you use conventional routers to interconnect VLANs, you can lose most of your performance adv antage. T hese Gigabit Et hernet Switc hes are routi ng switches that provide wire-speed routi ng, 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 switches will continue to segregate Layer 2 traffic based on VLANs, but will now provide inter-VLAN connections for IP applications. The switches w il l per for m I P rout ing for s pec i fi ed VL AN groups, a di rec t l y conn ected subnetwork, a remote IP subnetwork or host address, a subnetwork broadcast address, or a n IP mu l ticast a ddr ess.

Figure 11: IP Routing for Unicast Traff i

R&D

VLAN 1

OUTING

Testing

VLAN 2

IP Network 2

IP Network 1

– 38 –

CHAPTER 2 | Network

Application

Planning

Notes

APPLICATION NOTE S

1. Full-duplex operation only applies to point-to-point access (such as when a

switch is attached to a workstation, server or another switch). When the switch is connected to a hub, both devices must operate in half-duplex mode.

2. For network applications that require routing between dissimilar network

types, you can attach these switches directly to a multi-protocol router. However, if you have to interconnect distinct VLANs or IP subnets, you can take advantage of t he w ir e- s peed L a yer 3 routing pr o vided by these switches.

3. As a general rule, the length of fiber optic cable for

should not exceed:





1000BASE-SX: 550 m (1805 ft) for multimode fiber





1000BASE-LX: 5 km (3.1 miles) for single-mode fiber





1000BASE-LH: 70 km (43.5 miles) for single-mode fiber





10GBASE-SR: 300 m (984 ft) for multimode fiber





10GBASE-LR: 10 km (6.2 miles) for single-mode fiber





10GBASE-ER: 40 km (24.8 miles) for single-mode fiber

However, po wer bu dget constr ai nt s m ust also be cons i dered when calculating the maximum

cable length

– 39 –

for your spec i fi c en vi ronm ent .

a single

switched link

CHAPTER 2 | Network Planning

Application Notes

– 40 –

3 INSTALLING THE SWITCH

SELECTING A SITE

Switch units can be mounted in a standard 19-inch equipment rack or on a flat surface. Be sure to follow the guidelines below when choosing a location.





The site should:





be at the center of all the devices you want to l ink and near a power outlet.





be able to maintain its temperature within 0 to 50 °C (32 to and its humidity within 5% to 95%, non-condensing





provide adequate space (appr oximat ely fi ve centimeters or two inches) on all sides for proper air flow





be accessible for installing, cabling and maintaining the devices





allow the st atus L EDs to be c lear l y vi si bl e



 Make sure twi s t ed- pai r cable is al wa ys ro u ted away from power li n es ,

fluorescent li ght i ng fi xtu r es and other sources of electr i cal in ter fer ence, such as radios and transmitters.



 Make sure that the unit is connected to a separate grounded power outlet

that provides 100 to 240 VAC, 50 to 60 Hz, is within 2 m (6.6 feet) of each device and is po w er ed from an independent circuit breaker. As with any equipment, u sing a filter o r s urge s uppr esso r i s recomme nded.

122 °F)

– 41 –

CHAPTER 3 | Installing the Switch

Ethernet Cabling

ETHERNET CABLING

To ensure proper operation when installing th e swit ches i nto a network, make sure that the current cables are suitable for 10BASE-T, 100BASE-TX or 1000BASE-T operation. Check the following criteria against the current installation of your network:



 Cable type: Unshielded twisted pair (UTP) or shielded twisted pair (STP)

cables with RJ-45 connectors; Category 3 or better for 10BASE-T, Category 5 or better for 100BASE-TX, and Category 5, 5e or 6 for 1000BASE-T.



 Protection from radio frequency interference emissions



 Electrical su r ge suppression



 Separation of electrical wires (switch related or other) and electromagnetic

fields from dat a ba s ed n etw o r k wi r i ng



 Safe connections with no damaged cables, connectors or shields

Figure 12: RJ-45 Connectio ns

RJ-45 Connector

– 42 –

CHAPTER 3 | Installing the

Equipment

Switch

Checklist

EQUIPMENT CHECKLIST

After unpacking this switch, check the contents to be sure you have received all the components . T hen , befo r e begi n ni ng the installation, be sure you have all other necessary installation equipment.

PACKAGE



 24- or 48-port Gigabit Ethernet Switch (LGB6026A or LGB6050A)



 Four adhesive foot pads



 Bracket Mounting Kit containing two brackets and eight screws for attaching



 Power cord—either US, Continental Europe or UK



 Console cable (RJ- 4 5 t o RS- 232)



 This Installation Guide



 Management Guide CD

OPTIONAL RACK-MOUNTING

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



 A screwdriver (Phillips or flathead, depending on the type of screws used)

ONTENTS

the brackets to the switch

are not included

QUIPMENT

– 43 –

CHAPTER 3 | Installing the Switch

Mounting

MOUNTING

The switch can be mounted in a standard 19-inch equipment rack or on a desktop or shelf. Mounting instructions for each type of site follow.

RACK

Before rack mounting the switch, pay particular attention to the following factors:



To rack-mount devices:

OUNTING

 Temperature: Sinc e the tem perat ure wi t hin a rack ass em bly m ay be hi gher

than the ambient room t emper ature, check that the rack-environm ent temperature is within the specified operating temperatur e range. (See

page 78.)

 Mechanical L oadi ng: D o 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: R ack -mounted equipm ent should be properly grounded.

Particular attention should be given to supply connections other than direct connections to the mains.

1. Attach the brackets to the device using the screws provided in the Bracket

Mounting Kit.

– 44 –

CHAPTER 3 | Installing the

Switch

Mounting

Figure 13: Attaching the Brackets

2. Mount the device in the rack, using four rack-mounting screws (not

provided).

Figure 14: Installing the Switch in a Rack

– 45 –

CHAPTER 3 | Installing the Switch

Mounting

3. If installing a single switch only, turn to “Conne ct ing to a Power Source”

on page 51

4. If installing multiple switches, mount them in the rack, one below the other,

in any order.

5. If also installing an RPS, mount it in the rack below the other devices.

DESKTOP OR SHELF

1. Attach the four adhesive feet to the bottom of the first switch.

Figure 15: Attaching the Adhesive Feet

2. Set the device on a flat surface near an AC power source, making sure there

are at least two inches of space on all sides for proper air flow.

3. If installing a single switch only, go to “Connecting to a Power Source” on

page 51.

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.

5. If also installing an RPS, place it close to the stack.

OUNTING

– 46 –

CHAPTER 3 | Installing the Switch

Installing an Optional Module into the Switch

INSTALLING AN OPTIONAL MODULE INTO THE SWITCH

Figure 16: Installing an Optional Module

NOTE: The slide-in modul es are hot-swappable, you do not need to

power off the switch before installing or removing a module.

To install an optional module into the switch, do the following:

1. Remove the blank metal plate (or a previously installed module) from the

appropriate slot by removing the two screws with a flat-head screwdriver.

2. Before o penin g t he pac kage that contai n s the mo dule, t ouch t he bag t o t he

switch casing to discharge any recommended to us e a n E SD wris t s tr ap du r in g i n stallat i on.

potent ial static

electricity. Also, it is

3. Remove the module from the anti-static shielded bag.

4. Holding the module level, guide it into the carrier rails on each side and

gently push it all the way into the slot, ensuring that it firmly engages with the connector.

5. If you are sure the module is properly mated with the connector, tighten the

retainer screws to secure the module in the slot.

6. The Module LED on the switch’s front panel should turn green to confirm

that the module is correctly installed and ready to use.

– 47 –

CHAPTER 3 | Installing the Switch

Installing an Optional SFP Transceiver

INSTALLING AN OPTIONAL SFP TRANSCEIVER

Figure 17: Inserting an SFP Transceiver into a Slot

These switches support 1000BASE-SX and 1000BASE-LX, and 1000BASE-LH SFP-compatible transceivers. To install an SFP transceiver, do the following:

1. Cons ider network an d cabling requi rement s to sel ect 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.

OTE: SFP transceivers ar e ho t- s w appable. The switch does not need

to be powered off before installing or removing a transceiver . However, always firs t dis c o nn ec t the network cable before removi ng a transceiver.

NOTE: SFP transceiver s ar e no t pro vi ded i n the swit ch package.

– 48 –

CHAPTER 3 | Installing the Switch

Connecting Switches in a Stack

CONNECTING SWITCHES IN A STACK

Figure 18 shows how the stack cables are connected between switches in a

stack. Each s tacking c on nect ion is a 48 Gbps full-duplex h igh - s peed s er i al l i nk using proprietary stacking cables (p art numbers LGB6000SC-001 or LGB6000SC-004). The switch supports a line- and ring-topology stacking configuration, or can be used stand alone. T o ensure minimal disruption in case a unit or stacking cable fails, we recommend always use a ring-topology.

In line-topology stacking ther e is a single stack c able connection bet w een eac h switch that carries two-way communications across the stack. In ring-topology stacking, an extr a cabl e is connected bet w een the top and bottom sw i tches forming a “rin g” or “c los ed- loo p.” The closed-l oop c abl e pr o vides a redundant path for the stack link, so if one link fails, stack communications can still be maintained. Figure 18 illustrates a ring-topology stacking configuration.

To connect up to eight switches in a stack, perform the following steps:

1. Plug on e end of the stac k c abl e (o r dered s eparately) in the

port of the top unit.

Down (right)

2. Plug th e other en d o f th e stack c a ble i nto t he U p (l eft ) port of t he n ext u ni t .

3. Repeat steps 1 and 2 for each unit in the stack. Form

at the Down po r t o n the t op u ni t an d ending at th e U p por t on t he bo tt om unit (stacking up to 8 units).

a simple

chain starting

4. (Opti o nal) To form a wrap-around topol ogy, plug one end of a stack c abl e

into the Down port on the bottom unit and the other end into the Up port on the top unit.

– 49 –

CHAPTER 3 | Installing the Switch

Connecting Switches in a Stack

Figure 18: Making Sta cking Co nnec t ions

5. Select the Master unit in the stack by pressing the Master button in on only

one of the switches. Only one switch in the stack can operate as the Master, all other units operate in slave mode. If more than one switch in the stack is selected as Master, or if no switche s a re selected, the sy stem will select the unit with the lowest MAC address as the Master .

STACKING

All units in the stack must be connected via stacking cable (part numbe rs LGB6000SC-001 or LGB6000SC-004). You can connect units in a simple cascade configuration, connecting Down ports to Up ports, from the top unit to the bottom unit. Using this “line” topology, if any link or unit in the stack fails, the stack is split and t wo separ at e s egm ents ar e fo rm ed. T he Stack Lin k L EDs on the units that are disconnected flash to indicate that the stack link between them is not

When using line topology and a stack link failure occurs, Master unit is selected within eac h of the two stack s egments. The Master un it will be either the unit with the Master button depressed or the unit with the lowest MAC address if the Mas ter bu tton is not depress ed on any unit. Wh en the stack reboots and resumes operations, note that the IP address will be the same for both of t he s t ac k s egm ents . To resolve the conflicting IP address es, you

OPOLOGIES

funct io ning (see

Table 2, “System Status LEDs,” on page 27).

the stack

– 50 –

reboots and a

CHAPTER 3 | Installing the Switch

Connecting to a Power Source

should manually replace the failed link or unit as soon as possible . If you are using a wr ap-around stack topol ogy, cause the s tack stack apart.

to fail.

It would take two or more points of failure to break the

a single

point of failure in the stack will not

If the Master unit fails or is powered off, the backup unit will take control of the stack without any loss of configuration settings. The Slave unit with the lowest MAC address

is selected

as the backup unit.

ONNECTING TO A POWER SOURCE

To connect a switch to a power source:

1. Inser t the power cable pl ug directly into the AC socket located at the back of

the switch.

Figure 19: Power Socket

2. Plug th e ot h er en d o f th e c abl e in to a groun ded, 3-pin, AC power s o urce.

OTE: For Intern ationa l use, you may need to c han ge th e AC line

cord. You must use a line cord se t that has been appr o ved for the socket type in your country.

3. Check the front-panel L EDs as the devic e i s po w er ed o n to be sure the P WR

LED is lit. If not, check that the power cable is correctly plugged in.

– 51 –

CHAPTER 3 | Installing the Switch

Connecting to the Console Port

4. If you have purcha s ed a Redundant Power Supply, con nect i t to th e s w itch

and to an AC power source now, following the instructions included with the package.

ONNECTING TO THE CONSOLE PORT

The RJ-45 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 em ulation pro gram. The pin assignments used to connect to the serial port are provided in the following table.

Figure 20: Serial Port (RJ-45) Pin-Out

WIRING MAP FOR SERIAL

Table 5: Serial Cable Wiring

Switch’s 9-Pi n Serial Port

6 RXD (receive data) <--------------------- 3 TXD (transmit data) 3 TXD (transmit data) ---------------------> 2 RXD (receive data) 5 SGND (signal ground) ----------------------- 5 SGND (signal ground) No other pins are used.

Null Modem PC’s 9-Pin

ABLE

DTE Port

The serial port’s configuration requirements are as follows:



 Default Baud rate—115,200 bps

– 52 –

CHAPTER 3 | Installing the Switch

Connecting to the Console Port



 Character Size—8 Characters



 Parity—None



 Stop bit—One



 Data bits—8



 Flow control—none

– 53 –

CHAPTER 3 | Installing the Switch

Connecting to the Console Port

– 54 –

4 MAKING NETWORK CONNECTIONS

CONNECTING NETWORK DEVICES

This 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 devices using optional SFP+ or SFP transceiv e rs.

WISTED-PAIR DEVICES

Each device requires an unshielded twisted- pair ( UTP) connectors at both ends. Use Category 5, 5e or 6 cable for 1000BASE-T connections, Category 5 or better for 100BASE- T X connections , and Catego ry 3 or better for 10BASE-T connections.

CABLING

The RJ-45 ports on the switch suppor t au to m atic 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.

UIDELINES

AUTION: Do not pl ug a pho ne jac k connec tor i nto an RJ-45 port. Thi s

will damage the switch. Use only twisted-pair cables with RJ-45 connectors that conform to FCC standards.

cable with

RJ-45

– 55 –

CHAPTER 4 | Making Network Connections

Twisted-Pair Devices

CONNECTING TO PCS, SERVERS, HUBS AND

1. Attac h o ne en d o f a twi s ted- pai r cable segment to the devi c e’s RJ-45

connector.

Figure 21: Making Tw iste d -Pair C onne ctions

WITCHES

2. If the device is a network card and the switch is in the

the other end of the cable s egmen t t o a modular w all ou tl et that is connected to the wi ring c lo s et. (See the secti o n “Network Wiring

Connections” on page 57.) Otherwise, attach the other end to an avail abl e

port on the switch.

Make sure each t wi s ted pair cable does no t exc eed 100 meters (328 ft ) i n length.

OTE: Avoid usin g f l o w c on t ro l on a port connected to a hub unless i t

is actually required to solve a prob le m. Otherwise back pressu re jamming sign al s m a y degra de overall perfor m ance fo r th e s egment attached to the hub.

3. As each connection is made, the Link LED (on the switch) corresponding to

each port will ligh t green (1000 Mbp s) or yellow (10/100 Mbps) to indicate that the connection

is valid.

– 56 –

wiring

closet, attach

CHAPTER 4 | Making Network

Connections

Twisted-Pair

Devices

NETWORK WIRING

Today, the punch-down bloc k is an integral part of many of the newer equipment racks. It is actua lly part of the patch p anel. In stru ction s for mak ing conne cti ons 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 pat c h 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 tr oubleshoot ing.

Connection Records” on page 65.

ONNECTIONS

See “Cable

Labeling and

– 57 –

CHAPTER 4 | Making Network Connections

Fiber Optic SFP Devices

Figure 22: Network Wir ing Co nnecti ons

Network S witc h

w i t 10 /1 0

6 7 2 4

Equipment Rack (side view )

Punch-Down Block

Patch Panel

Wall

FIBER OPTIC

An optional Gigabit SFP transceiver (1000BASE-SX, 1000BASE-LX or 1000BASELH) can be used for a backbone con nection between switches, or for connecting to a high-speed server.

Each single-mode fiber port requires 9/125 micron single-mode fiber optic cable with an LC conn ector at both ends. Eac h mul timo de fiber opti c po rt r equi r es 50/ 125 or 62.5/125 micron multimode fiber optic cabling with an LC connector at both ends.

SFP

DEVICES

– 58 –

CHAPTER 4 | Making Network

Fiber Optic SFP

Connections

Devices

ARNING: This switch uses lasers to transmit signals over fiber optic

cable. The lasers ar e c omplia nt with the requirements of a Class 1 Laser Product and are inherently eye safe in normal o peration. However, you should never look directly at a transmit port when it is powered on.

ARNING: When selecting a fiber SFP device, considering safety,

please make sure that it can function at a temperature t hat is not less than the recommended maximum operatio nal tem perat ure of the product. You must also use an approved Laser Class 1

SFP transceiver.

1. Rem o ve an d keep the LC port’ s rubber plug. When no t conn ec ted to a fiber

cable, the r ubber pl ug s ho ul d be replac ed to protect th e optics.

2. Check t hat the fiber termin ators are clean . Y ou can clean the cabl e plugs by

wiping them gently with a clean tissue or cotton ball moistened with a little ethanol. Dirty fiber terminators on fiber optic cables will impair the quality of the

light transmitted through the c able and lead to degraded performan ce

on the port.

3. Connect one end of the cable to the LC port on the switch and the other end

to the LC port on the other device. Since LC connect ors ar e keyed, the c a ble can be attached in only one orientation.

Figure 23: Making F iber P ort Connec ti ons

4. As a connection is made, check the Link LED on the switch corresponding to

the port to be sure that the connection is valid.

– 59 –

CHAPTER 4 | Making Network Connections

Fiber Optic SFP Devices

The 1000BASE-SX, 1000BASE-LX, 1000BASE-LH fiber optic ports operate at 1 Gbp s, full duplex, with aut o-negot iation of flow cont rol. T he max imum le ng th for fiber optic cable operating at listed under “1000 Mbps Gigabit Ethernet Collision Domain” on page 64.

Gigabit speed

– 60 –

will depend on the fiber type as

CHAPTER 4 | Making Network Connections

10 Gbps Fiber Optic Connections

10 GBPS FIBER OPTIC CONNECTIONS

An optional 1 0 Gi ga bit transceiver (SFP+) can be u s ed fo r a backbone connection b e t we e n swi tch es.

Single-mode fi ber port s requ ire 9/125 mic ron single-m ode fiber optic cable. Multimode fiber optic ports require 50/125 or 62.5/125 micron multimode fiber optic cable. Each fiber optic cable must have an LC connector attached at both ends.

ARNING: These switches use lasers to transmit signals over fiber

optic cable. The l asers are c ompliant with the r equirements of a Clas s 1 Laser Product and are inherently eye safe in normal o peration. However, you should never look directly at a transmit port when it is powered on.

ARNING: When selecting a fiber device, considering safety, please

make sure that it can func tion at a temperature that is not less than the recommended maxim um operational temperat ure of the product. Yo u must also use an approved Laser Class 1

SFP transceiver

1. Rem ove and keep the port’s protecti ve cover. When not connected to a fiber

cable, the co ver s hould be replac ed t o prot ec t the optics.

2. Check t hat the fiber termi nators ar e clean. Y ou can c lean the cable pl ugs 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 light

transmitted through the cable and lead to degr aded performanc e on

the port.

the

3. Connect one end of the cable to the LC port on the switch and the other end

to the LC port on the other device. Since LC connectors ar e keyed, the c abl e can be attached in only one orientation.

– 61 –

CHAPTER 4 | Making Network Connections

10 Gbps Fiber Optic Connections

Figure 24: Connecting to an SFP+ Transceiver

4. As a connection is made, check the Link LED on the module to be sure that

the connection is valid.

The 10G fiber optic ports operate at 10 Gbps full duplex. The maximum length for fiber optic cable operating at 10 Gbps will depend on the fiber type as listed under “10 Gbps Et her n et Col lis ion Domain” on page 63.

– 62 –

CHAPTER 4 | Making Network

Connections

Connectivity

Rules

CONNECTIVITY RULES

When adding hubs ( r epeate rs) to your network, please follow the connectivity rules listed in t he 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 calcula t io ns

1000BASE-T CABLE

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 (enhanc ed C ategor y 5) or Category 6 cable should be used. The Category 5e specification includes test recommendatio ns for Category 5. Therefore, the first step in preparing existing Category 5 cabling for running 1000BASE-T is a simple test of the cable installation to be sure that it complies with the IEEE 802.3-2005 standards.

10 GBPS ETHERNET COLLISION

Table 6: Maximum 1000B ASE- SX Gig a b it Et hernet Ca bl e Lengths

Fiber Size Fiber Bandwidth Maximum Cable Length Connecto r

62.5/ 125 m icr on single-mode fiber

50/125 micron single-mode fiber

Table 7: Maximum 10GB ASE-L R 10 Giga b it Et hernet Cabl e Length

Fiber Size Fiber Bandwidth Maximum Cable Length Connecto r

9/125 micro n singlemode fiber

for cascade length involving other devices.

EQUIREMENTS

param e te rs

OMAIN

160 MHz/km 2-26 m (7-85 ft.) LC 200 MHz/km 2-33 m (7-108 ft.) LC 400 MHz/km 2-66 m (7-216 ft.) LC 500 MHz/km 2-82 m (7-269 ft.) LC 2000 MHz /km 2-300 m (7-984 ft.) LC

N/A 10 km (6.2 miles) LC

– 63 –

that are only

your

CHAPTER 4 | Making Network Connections

Connectivity Rules

Table 8: Max imum 10GB ASE -E R 10 Gi ga b it Et her net C a bl e Le ngth

Fiber Size Fiber Bandwidth Maximum Cable Length Connecto r

9/125 micro n singlemode fiber

N/A 40 km (24.85 miles) LC

1000 MBPS GIGABIT ETHERNET COLLISION

Table 9: Maximum 1000B ASE-T Gigabi t Et her net Cab le Lengt h

Cable Type Maximum Cab le Length

Category 5, 5e, or 6 100-ohm UTP or STP

100 m (328 ft) RJ-45

OMAIN

Connector

Table 10: Max imum 1000B ASE-SX Gi ga b it Et hernet Cabl e Lengt hs

Fiber Size Fiber Bandwidth Maximum Cable Length Connecto r

62.5/ 125 m icr on multimode fiber

50/125 micron multimode fiber

Table 11: Ma x imum 1000BASE-LX Gig a b it Et her ne t Cabl e Le ngth

Fiber Size Fiber Bandwidth Maximum Cable Length Connector

9/125 micro n singlemode fiber

Table 12: Max imum 1000B ASE- LH Gigabit Ether net Cab le Le ngth

Fiber Size Fiber Bandwidth Maximum Cable Length Connector

9/125 micro n singlemode fiber

160 MHz/ km 2-220 m (7-722 ft) LC 200 MHz/ km 2-275 m (7-902 ft) LC 400 MHz/km 2-500 m (7-1641 ft) LC 500 MHz/km 2-550 m (7-1805 ft) LC

N/A 2 m - 5 km (7 ft - 3.2 miles) LC

N/A 2 m - 70 km LC

(7 ft - 43.5 miles)

– 64 –

CHAPTER 4 | Making Network Connections

Cable Labeling and Connection Records

100 MBPS FAST ETHERNET COLLISION

Table 13: Max imum Fas t Et hernet Ca b le Lengths

Type Cable Type Max. Cable Length Connector

100BASE-TX Category 5 or

UTP or

10 MBPS ETHERNET COLLISION

Table 14: Max imum Et herne t Cab le L ength

Type Cable Type Max. Cable Length

10BASE-T Category 3 or better 100-ohm UTP

better 100-ohm

STP

OMAIN

100 m (328 ft) RJ-45

OMAIN

100 m (328 ft) RJ-45

Connector

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 without need for unnecessary time consumption.

To best manage th e phys i cal implementations of your network, fo l l ow t hes e guidelines:



 Clearly l abel t he o ppo s in g en ds of eac h c a ble.



 Using your building’s floor plans, draw a map of the location of all network-

connected equipment. For each piece of equipment, identify the devices to which it is connected.



 Note the length of ea ch cable and the maxi mum

the switch ports.



 For ease o f un ders t an ding, use a location-based key w hen assi gni ng

prefixes to you r c abl e labeling.



 Use sequential numbers for cables th at ori ginate fr o m t he s ame equi pm ent .

cable length

– 65 –

your topology

supported by

CHAPTER 4 | Making Network Connections

Cable Labeling and Connection Records



 Differentiate between racks by naming accordingly.



 Label each separate piec e o f equi pment.



 Display a c opy of your equi pment map, i nclu ding keys to all abbrevia tio ns at

each equipment r ac k.

– 66 –

A TROUBLESHOOTING

DIAGNOSING SWITCH INDICATORS

Table 15: Troubleshooting Chart

Symptom Action

PWR LED is Off

Power LED is Amber

DIAG LED Flashing Yellow

Stack Master LED is Flashing Am be r

Stac k Lin k LE D is Flash ing Gr een/ Amb er

Lin k LE D is Off



 Check connections between the switch, the power cord and

the wall outlet.



Contact your dealer for assistance.



 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.



 The stack has not completed its init ial configuration. Wait a

few minutes for the process to complete.



 Check that all stacking cables are properly connected.



 The upl ink/downl ink has failed .



 For the indicated stack link, check that the stacking cables

are properly connected. Replace the stacking cable if necessary (part numbers LGB6000SC-001 or LGB6000SC-004).



 Power cycle the switch to try and clear the condition.



 Verify that the switch and attached device are powered on.



Be sure the cable is plugged into both the switch and

corresponding device.



If the switch is installed in a rack, check the connections to

the punch-down block and patch panel.



Verify that the proper cable type is used and its length does

not exceed specified limits.



Check the adapter on the attached device and cable

connections for possible defects. Replace the defective adapter or cable if necessary .

– 67 –

CHAPTER A | Troubleshooting

Diagnosing Switch Indicators

DIAGNOSING POWER PROBLEMS WITH THE LEDS

The Power and RPU LEDs work in combination to indicate power status as follows.

Table 16: Power/ RPS L ED s

Power LED RPU LED

Green

Green Green Off Internal power functioning normally; RPU not plugged in. Amber Green Off Off Both internal power and RPU unplugged or not functioning.

Green Amber

Status

Internal power functioning normally; RPU is present. Internal power functioning normally; RPU plugged in but faulty.

Internal power faulty; RPU delivering power .

– 68 –

CHAPTER A | Troubleshooting

Power and Cooling Problems

POWER AND COOLING PROBLEMS

If the power indicator does not turn o n w h en t he power c o rd i s plugged in, you may have a problem with the power outlet, power cord, or internal power supply. However, if the unit power s off after runn in g fo r a while, check fo r l o os e power connections, power losses or surges at the power outlet. If you still cannot isol a te t he pr o bl em , the internal po wer s u pply may be defective.

NSTALLATION

Verify that all system components have been properly installed. If one or more components appear to be malfunctioni n g (such as the power cord or n etw o r k cabling), test them in an alternate environment where you are sure th at all the other components are functioning properly.

N-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, s ubn et mask, and default gateway. If you ha ve tr o uble est abl i s h in g a link to the man agem ent agent, check to s ee i f you have a valid netwo r k 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 If it has not been disabl ed, th en c h eck t h e networ k cabling that runs between your remote location and the switch.

OTE: The management agent accepts up to four simultaneous Telnet

sessions. If the maximum additional Telnet connection will not be able to log into the system.

number of

– 69 –

sessions already exists, an

disabled

CHAPTER A | Troubleshooting

Stack Troub leshoot ing

STACK TROUBLESHOOTING

If a stack fails to initialize or function, first check the following items:



 Check that all stacking c a bles ar e pro per ly connected.



 Check if any stacking c abl es a p pea r damaged.



 Check that only one Stack Master butto n i s pressed in .



 Check that all switches in the stack are powered on.

After checking all items, reboot all the switches in the stack.

Switches in the stack may be configured using a ring- or line-topology. To ensure minimal disruption in case a unit or stacking cable fails, always use a ringtopology. When using ring-topology configuration and a switch fails, or a stacking cable is disconnected, the stack continues normal operation using linetopology stacking through the remaining stack connections.

If any changes occur to a slave unit, such as unit failure or insertion of a new unit, operation of the other units in the stack are not affected. On the other hand, if the mas ter unit fails, the unit with the low est MAC address is elected as the new master. The stack reboots, discovers the new stack topology, assigns identifiers to each unit, and checks the softwar e i m ages process make take up to two minutes.

If you do not connect a wrap- ar o un d cable from t he bo t to m unit back up to the top unit in the stack, the failure of a single unit will cause the stack to break into two separate stacks. In this case, a master unit will be elected for both of the stacks. However , backup information inherited from the cause the same IP address t o be used by bo th m aster u nits in the two s t ac ks . Yo u mus t therefo r e m an ually r econfi gur e t he IP addres s of the management interface on one of the master units.

– 70 –

on each

previous master

unit. This

unit will

B CABLES

TWISTED-PAIR CABLE AND PIN ASSIGNMENTS

For 10/100BASE-TX connections, the 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 gr een and the other, gr een with white st r i pes. connector must be attached to both ends of

the cable.

AUTION: DO NOT plug a phone jack connector into any RJ-45 port.

Use only twisted-pair cables with RJ-45 connectors that conform with FCC standards.

AUTION: Each wire p air must be attached to the RJ-45 co nne ctors in

a specific orientation.

The figure b e low illust rates how the p in s on the RJ-45 con nector are nu mbered. Be sure to h old the con nectors in the sa me orie ntation when at ta chin g th e wires to the pins.

Figure 25: RJ-45 Connec t or Pi n Number s

– 71 –

Also, an

RJ-45

CHAPTER B | Cables

Twisted-Pair Cable and Pin Assignments

10BASE-T/100BASE-T X

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 me ters (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 con nected and 6 at the other end of t he c abl e. Wh en u si n g any RJ - 45 port on th is swi tch, you can use either straight-through or crossover cable.

SSIGN MENTS

straight through

to pins 1, 2, 3,

Table 17: 10/ 1 00BASE- TX MDI and MDI- X P ort Pinouts

1 Transmit Data plus (TD+) 2 Tran sm it Da t a mi nu s ( TD -) Receive Data minus (RD-)

3 Receive Data plus (RD+) 6 Re ce ive Dat a minu s (R D- ) Transmit Data mi nus (TD-)

4,5,7,8

Note:The “+” and “-” signs represent the polarity of the wires that

MDI Signal Name MDI-X Signal Name

Receive Data plus (RD+)

Transmit Data plus (TD+)

Not used Not u sed

make up each wire pair.

STRAIGHT-THROUGH

If the twisted-pair cable is to join two ports and only one of the ports has an internal cro ssover (MDI-X), the two pairs of wires must b e straight-through. (When auto-ne gotiation is en abled for an y RJ-45 port on this sw itch, you ca n use either straight - throu gh or crossover c abl e t o con nect to any device type.)

You must connect all four wire pairs as shown in the following diagram to support Giga bi t Ethernet.

IRING

– 72 –

Twisted-Pair Cable and Pin

CHAPTER B |

Cables

Assignments

Figure 26: Straight-through Wiring

End

EIA/T IA 568B RJ-45 W

10/100

BASE-TX Straight-through Cable

White/Or

2 3 4 5 6 7 8

Whi

Blue

Stripe Green

White/Brown Stripe

ange Stripe

Orange

te/

Green

White/Blue

Brown

iring

Stripe

Standard

1 2

3 4 5 6 7 8

End B

CROSSOVER WIRING

If the twisted- pai r c a ble i s to joi n t w o po r t s and ei t her with an “X” (MDI-X) or neither port is labeled with an “X” (MDI), a crossover must be implement ed in the wiring. (When auto-nego ti ation 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.)

You must connect all four wire pairs as shown in the following diagram to support Giga bi t Ethernet.

Figure 27: Crossover Wiring

End

EIA/T IA 568B RJ-45 W

10/100

BASE-TX

White/Orange Stripe

2 3 4 5 6 7 8

Whi

Blue

White/Brown Stripe

Crossove r

Orange

te/

Green

White/Blue

ripe Green

Brown

iring

Stripe

Standard

Cable

both ports

1 2 3 4 5 6 7 8

are labeled

End

– 73 –

CHAPTER B | Cables

Twisted-Pair Cable and Pin Assignments

1000BASE-T PIN

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 t hat all four pairs o f wires be connected. Note that for 100 0BASE- 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 1000B ASE-T connections. Also be sure that the length of any tw isted- pair connect ion does not e xceed 100 met ers (32 8 feet ).

SSIGNMENT S

Table 18: 1000B ASE-T M D I a nd M DI- X Port Pinouts

MDI Signal Name MDI-X Signal Name

1 Bi-directional Pair A Plus (BI_DA+) 2 Bi-directional Pair A Minus (BI_DA-) 3 Bi-directional Pair B Plus (BI_DB+) 4 Bi-directional P air C Plus (BI_DC+) 5 Bi-directional Pair C Minus (BI_DC-) 6 Bi-directional P a ir B Minus (BI_DB-) 7 Bi-directional Pair D Plus (BI_DD+) 8 Bi-directional Pair D Minus (BI_DD-)

Bi-directional Pair B Plus (BI_DB+) Bi-directional Pair B Minus (BI_DB-) Bi-directional Pair A Plus (BI_DA+) Bi-directional P air D Plus (BI_DD+) Bi-directional Pair D Minus (BI_DD-) Bi-directional Pair A Minus (BI_DA-) Bi-directional Pair C Plus (BI_DC+) Bi-directional Pair C Minus (BI_DC-)

CABLE TESTING FOR EXISTING CATEGORY 5 C ABLE

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-T SB-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 T ransmission 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 swit c hes a nd en d devi c es.

– 74 –

CHAPTER B |

Fiber

Cables

Standards

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 t hr ee meas u res that can be applied to try and correct the problem:

1. Repl ace an y Catego ry 5 patc h c ables with high-per form ance

Black Box LGB6000SC-004, LGB6001C, LGB6000SC-001, LGB6026A, LGB6050A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual