Black Box 4 LP004A User Manual

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© Copyright 2006. Black Box Corporation. All rights reserved.

1000 PARK DRIVE • LAWRENCE, PA 15055-1018724-746-5500• FAX724-746-0746

January2006

LP004A

Power over Ethernet (PoE) Switch

CUSTOMER SUPPORT INFORMATION

Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday:877-877-BBOX FREE technical support, 24 hours a day, 7 days a week: Call724-746-5500 or fax724-746-0746 Mail order:Black Box Corporation, 1000 Park Drive, Lawrence, PA15055-1018

Web site: www.blackbox.comE-mail: info@blackbox.com

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

BLACK BOX®Series

Power over Ethernet (PoE) Switch Installation and User Guide

Trademarks

Ethernet is a trademark of Xerox Corporation

NEBS is a trademark of Telcordia Technologies

UL is a registered trademark of Underwriters Laboratories

Important: The LP004A 10/100 Mb/s Power over Ethernet (PoE) Switch contains no user serviceable parts. Attempted service by unauthorized personnel shall render all warranties null and void. If problems are experienced with LP004A 10/100 Mb/s PoE Switch products, consult Section 5, Troubleshooting, of this User Guide.

Copyright © 2006BLACK BOX®Corporation. All rights reserved. No part of this publication may be reproduced without prior written permission from Black Box, Inc. Printed in the United States of America.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User

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Contacting Black Box Corporation

Please use these mailing address and phone and fax numbers:

Black Box Corporation

1000 Park Drive

Pittsburgh, PA 15055

Phone: (724) 746-5500

Fax: (724) 746-0746

E-mail:info@blackbox.co

__________________________________________________________

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FEDERAL COMMUNICATIONS COMMISSION

AND

CANADIAN DEPARTMENT OF COMMUNICATIONS

RADIO FREQUENCY INTERFERENCE STATEMENTS

This equipment generates, uses, and can radiate radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer’s instructions, may cause interference to radio communication. It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference when the equipment is 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 necessary to correct the interference.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

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This digital apparatus does not exceed the Class A limits for radio noise emission from digital apparatus set out in the Radio Interference Regulation of the Canadian Department of Communications.

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le brouillage radioélectrique publié par le ministère des Communications du Canada.

NORMAS OFICIALES MEXICANAS (NOM)

ELECTRICAL SAFETY STATEMENT

INSTRUCCIONES DE SEGURIDAD

1.Todas las instrucciones de seguridad y operación deberán ser leídas antes de que el aparato eléctrico sea operado.

2.Las instrucciones de seguridad y operación deberan ser guardadas para referencia futura.

3.Todas las advertencias en el aparato eléctrico y en sus instrucciones de operación deben ser respetadas.

4.Todas las instrucciones de operación y uso deben ser seguidas.

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5.El aparato eléctrico no deberá ser usado cerca del agua—porejemplo, cerca de la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc..

6.El aparato eléctrico debe ser usado únicamente con carritos o pedestales que sean reconnendados por el fabricante.

7.El aparato eléctrico debe ser montado a la pared o al techo sólo como sea recommendado por el fabricante.

8.Servicio—Elusuario no debe intentar dar sercicio al equipo eléctrico más allá a lo descrito en las instrucciones de operatión. Todo otro servicio deberá ser referido a personal de servicio calificado.

9.El aparato eléctrico debe ser situado de tal mannera que su posición no interfiera su uso. La colocación del aparato eléctrico sobre una cama, sofá, alfombra o superficie similar puede bloquea la ventilación, no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilación.

10.El equipo eléctrico deber ser situado fuera del alcance du fuentes de calor como radiadores, registros de calor, estufas u otros aparatos (incluyendo amplificadores) que producen calor.

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11.El aparato eléctrico deberá ser connectado una fuente de poder sólo del tipo descrito en el instrucivo de operación, o como se indique en el aparato.

12.Precaución debe ser tomada de mal manera que la tierra fisica y la polarización del equipo no sea eliminada.

13.Los cables de la fuente de poder deben ser guiados de tal manera que no sean pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo particular atención a los contactos y receptáculos donde salen del aparato.

14.El equipo eléctrico debe ser limpiado únicamente de acuerdo a las recommendaciones del fabricante.

15.En caso de existir, una antena externa deberá ser localizada lejos de las lineas de energia.

16.El cable de corriente deberá ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo.

17.Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilación.

18.Servicio por personal calificado deberá ser provisto cuando:

A:El cable de poder o el contacto ha sido dañado; u

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B:Objectos han caído o líquido ha sido derramado dentro del aparato; o

C:El aparato ha sido expuesto a la lluvia; o

D:El aparato parece no operar normalmente o muestra un cambio en su desempeño;;o

E:El aparato ha sido tirado o su cubierta ha sido dañada.

Certification Notice for

Equipment Used in Canada

The Canadian Department of Communications label identifies certified equipment. This certification means that the equipment meets certain telecommunications-networkprotective, operation, and safety requirements. The Department does not guarantee the equipment will operate to the user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single-lineindividual service may be extended by means of a certified connector assembly (extension cord). The customer should be

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aware that compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility—inthis case, your supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

Users should ensure for their own protection that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

CAUTION:

Users should not attempt to make such connections themselves, but should contact the appropriate electric inspection authority, or electrician, as appropriate.

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The LOAD NUMBER (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices, subject only to the requirement that the total of the load numbers of all the devices does not exceed 100.

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TABLE OF CONTENTS

Page

1.0

SPECIFICATIONS ...............................................................................

1

1.1

Technical Specifications .....................................................................

1

1.2

Summary of models and descriptions (LP004A Series): ........................

7

2.0

INTRODUCTION .................................................................................

8

2.1

Inspecting the Package and the Product...............................................

8

2.2

Product Description (LP004A Series) .................................................

9

2.3

Black Box LP004A with four (RJ-45)Copper ports .........................

14

2.4

Black Box LP004A-Series,with four(RJ-45)Copper ports .............

17

2.5

Frame Buffering and Latency ............................................................

18

2.6

Features and Benefits.........................................................................

21

2.7Applications for LP004A Series Power Over Ethernet Switch(PoE)23

3.0

INSTALLATION.................................................................................

27

3.1

Locating the PoE Switch Unit............................................................

27

3.2

LE1505-RACKfor Rack Mounting of LP004A Series Switches......

28

3.3LH1505P-RACKfor Rack MountPower Over Ethernet Switch(PoE)29

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User

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3.4

.................................................................DIN-Railmounting option

31

3.5

Power Requirement for Black Box LP004A Power Source Switch ..

32

3.6

Powering the LP004A Series (DC internal) with –48VDCpower input33

3.7

LP004A , DC-powered,-48VDCInstallation...................................

35

3.8

Connecting Ethernet Media ...............................................................

36

3.8.1

Connecting Twisted Pair (RJ-45,CAT 3 or CAT 5) .................

37

3.8.2

Connections to NICs which support Auto-NegRJ-45ports......

38

4.0

OPERATION .......................................................................................

39

4.1

Dual-SpeedFunctionality, and Switching .........................................

39

4.2

Auto-cross(MDIX),Auto-negotiationandSpeed-sensing................

41

4.3

Dual LEDs, Front-panelandside-panel(LP004A Series)...............

42

5.0

TROUBLESHOOTING ......................................................................

43

5.1

Before Calling for Assistance ............................................................

44

5.2

When Calling for Assistance .............................................................

45

5.3

Return Material Authorization (RMA) Procedure .............................

47

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Revisions.

Rev A 01/06: Initial release of this user manual for LP004A Power over Ethernet (PoE) Switch

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

1.0SPECIFICATIONS

1.1Technical Specifications

Ports Performance

When a port is operating at 100Mbps: Data Rate: 100Mbps

When a port is operating at 10 Mbps: Data Rate: 10 Mbps

Network Standards

100Mb: Ethernet IEEE 802.3u, 100BASE-TX,100BASE-FX10 Mb: Ethernet IEEE 802.3,10BASE-T

Auto-sensingfor speed: IEEE 802.3u

Packet-ProcessingBetween Domains

Filter and Forward Rate from 100Mbps ports: 148,800 pps max Filtering and Forwarding Rate from 10 Mbps ports: 14,880 pps max. Processing type: Store and Forward, non-blocking

Auto-learning:2K address table Address bufferage-outtime: 300 sec.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Packet buffers memory: 128KB, dynamically shared on all domains Latency (not including packet time): 100 to 10 Mbps: 5µs

10 to 100Mbps: 15µs

Path Delay Value: 50 BT on all ports

Maximum Ethernet Segment (or Domain) Lengths

 

10BASE-T(Unshielded twisted pair)

- 100 m (328 ft)

100BASE-TX(CAT 5 UTP)

- 100 m (328 ft)

Operating Environment : Ambient Temperature ratings

LP004A: -40ºFto 167ºF(-40ºCto 75ºC) Long term per agency tests (UL).-40ºFto 212ºF(-50ºCto 100ºC) Short term per IEC Type tests.

Storage Temperature,

All models: -40ºFto 185ºF(-40ºCto 85ºC)

Cold Start:

LP004A to -40ºC

Ambient Relative Humidity: 5% to 95%(non-condensing)

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Altitude (All models):

-200to 50000ft.(-60– 15,000 m)

Conformal Coating (optional) for humidity protection

Note: H and P models are designed for NEBS compliance, including, vibration, shock and altitude.

Packaging:

Enclosure: Rugged sheet metal (Steel). Dimensions of the Switch unit:

3.5 in H x 3.0 in W x 1.0 in D (8.9 cm x 7.6 cm x 2.5 cm)

Weight: all models: 4.6 oz. (130g); Power supply, – office: 5.9 oz (170g)

–H:5.8 oz (165g)–P:7.9 oz (225g)

Cooling Method:

Convection cooled, using the case as a heat sink. The extreme (P) temperature uncontrolled location models have closed cases to withstand dirt and use special thermal techniques to transfer heat to the outside of the case for cooling.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

POWER SUPPLY

These products are intended to be supplied by a Listed, Direct Plug-Inpower unit, marked “Class 2”, or a Listed ITE Power Supply, marked “LPS”, which has suitably rated output voltage (i.e. 9vdc, 12vdc, 24vdc, 48vdc), and suitably rated output current (i.e. 100mA to 500mA).When connected to a 48 V centralized dc source, these products shall be provided with a Listed 5 A DC fuse in the supply circuit.

AC POWER SUPPLY ( using an external power adapter):

(OPTIONAL) LP004A have an (8-15)VDCoutput with 6ft long cord and a 2.5mm center +ve jack. The power supplies are temperature rated to match the PoE Switch ratings.

NOTEAn external power adaptor is optional, is not included with unit, and must be ordered separately if desired for convenience such as bench-testing.It is only used for powering the unit to act as a switch, and does not provide power to any PoE devices attached for the application.

Temperature un-controlledExtreme Ratings(-40to 75°C)

All models. Outdoor temperature rated. Unit takes-12vdc,2Amps, 6 watts

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

DC POWER Input : built-interminal block for +,-,ground,-48VDCinput (range of 36 to 60V DC). The Direct DC power input floats. User may ground either “+” or “-” if desired.

Power Consumption: 6 watts for the unit, up to 60 watts (30 to 40 typical) for attached PoE devices. See Section 3.6.

Note 1: The optional8-15VDC jack can be used for dual source DC input using an AC adapter and the DC terminal block. Power supply protection is provided by internal diodes.

Port Connectors:

Four RJ-45Ports: support100BASE-TXand10BASE-Twithauto-cross(MDIX). They are shielded8-pinfemale connectors for shielded (STP) and unshielded (UTP) Cat 3, 4, 5 cable.

LED Indicators (Dual: front and top)

POWER: Steady ON when power applied

10/100: Steady ON for 100Mbps; OFF for 10 Mbps

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

LK/ACT: Steady ON for LINK (LK) with no traffic, BLINKING indicates

 

port is transmitting / receiving (ACT).

F/H:

Steady ON for full-duplex,OFF forhalf-duplex

Mounting options

Metal mounting clips for panel mounting: included

DIN-Railmounting option: Model #DIN-RAILMC2 (see Section 3.4)Rack-mountoption:LE1505-RACK,(see Section3.2/3.3)

Mean Time Between Failure (MTBF) – over15 years, Telcordia (Bellcore) Method

Agency Approvals and Standards Compliance:

UL Listed (UL 60950), cUL, CE, Emissions meets FCC Part 15 Class A. NEBS L3 and ETSI compliant.

IEEE P1613 Env. Std for Electric Power Substations NEMA TS-2and TEES for traffic control equipment Designed for UL 2043above-the-ceilinginstallation

IEC61850 EMC and Operating Conditions Class C Power Substations

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

1.2Summary of models and descriptions (LP004A Series):

LP004A-48VDC= four 10/100RJ-45ports PoE Switch.,premium-ratedPoE Switch, rated for uncontrolled environments. All fourRJ-45ports support power source PoE per the IEEE 802.3af standard. Includes integral-48VDC terminal block for power unit.

Accessories

Optional AC power adapter as noted above

LE1505-RACK= 19”Rack-mounttray forLP004A-seriesSwitch models, up to 16 units

Other Tray configurations with power supplies and power cabling included - See Section 3.3 DIN-RAIL-MC2= MetalDIN-Railmounting bracket for one LP004A Series Switch,

See Section 3.4. Conformal Coating (for high humidity and “tropical” applications) - request quote.

BLACK BOX®, Corporation. reserves the right to change specifications, performance characteristics and/or model offerings without notice.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

2.0INTRODUCTION

This section describes LP004A-Seriesmodels, including appearance, features and

typical applications.

2.1 Inspecting the Package and the Product

Examine the shipping container for obvious damage prior to installing this product; notify the carrier immediately of any damage which you believe occurred during shipment or delivery. Inspect the contents of this package for any signs of damage and ensure that the items listed below are included.

This package should contain:

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Black Box LP004A-SeriesPoE Switch Unit

0

No External AC Power Supply is included for LP004A

1 set

Metal panel mounting clips and screws, 2 each

1

User Guide, i.e., this manual

Remove the Black Box LP004A-SeriesSwitch from the shipping container. Be sure to keep the shipping container should you need to ship the unit at a later date.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

In the event there are items missing or damaged contact your supplier. If you need to return the unit, use the original shipping container. Refer to Section 5 Troubleshooting, for specific return procedures.

2.2 Product Description (LP004A Series)

The Black Box LP004A is designed for Industrial Power over Ethernet (PoE) Switch covers the full range of application environments, with regular (office), Hardened (factory floor), and Extreme-rated(outdoor) versions. Extra features forheavy-dutyand extended temperature operation ranges are included selectively in the Hardened factoryfloor andExtreme-ratedoutdoor models. This

selection of models offers the best price / value unit for each user and installation.

Black Box LP004A Switch is a versatile and handy solution, and can provide it in a convenient compact package. Designed and developed with premium-gradeextended

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

temperature components, premium-ratedLP004A switches are suitable for use in sheltered outdoor locations andtemperature-uncontrolledenvironments with a temperature rating of–40°Cto 75°C.

The Black Box LP400A PoE Switch is in fact act like a Power source Switch, combines standard 802.3af Power over Ethernet (PoE) with a small heavy duty 4- port Industrial Switch. Using an external -48vdcpower source, all four of the LP004A’s Ethernet ports can provide Power as well as 10/100 Mb data transmission over the interconnecting Ethernet cables. So a single Ethernet twisted pair cable will be able to transmit voice, data and power from the attached devices.

The LP004A switches are Power Sourcing Equipment (PSE), and are fully compatible with Powered Devices (PD) (e.g wireless access points, IP phones) that comply with the IEEE 802.3af PoE standard. The LP004A switch ports have an auto-sensingalgorithm, so that

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

they provide power only to 802.3af, PoE end devices only. PoE is managed by a multistage handshake to protect equipment from damage and to manage power budgets

.The LP004A ports will discontinue supplying power when the PoE powered devices are disconnected, and support the 802.3af PoE PSE standard for over-currentprotection,under-currentdetection and fault protection.

The LP004A provides a standards-compliantway to power and connect a few small Ethernet devices at the edge of a network where AC power is notcost-effectiveto deploy. Since PoE is rapidly emerging as an Ethernet option in industrial, commercial, outdoor and military applications, the Black Box LP004A enables the efficient deployment of reliable VoIP and wireless access networking devices to increase the efficiency of heavy duty industrial communications. Using PoE switches like the Black Box LP004A can produce significant cost savings as well as flexibility and reliability advantages over traditional ACpowered devices. The simplicity of PoE increases reliability and reduces the overall cost of installation and operation.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Some of the popular applications where the Black Box LP004A PoE Switch can be used to provide the power and data for PoE Powered Devices, which require 12-13wattsmaximum.

-Wireless LAN access points and WLAN Mobility system

-VOIP phones

-Remote Security Camera

-SNTP Clock

-Factory floor and building control monitoring

(Temperature, Smoke, Heat and other environmental sensors).

-Fire alarms

-Security devices, like retinal scanners or fingerprint readers.

-Lighting control.

-Home automation systems

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Because of the existence of the 802.3af PoE standard, the RJ-45Ethernet jack will become the first worldwide standard power plug, the futuristic applications. PoE is emerging as a convenient item and is destined to be ever more widely used. It can provide power to Notebook computers, Cell Phone chargers, and PDA games through the PoE devices.

The efficient LP004A has special thermal techniques designed for extended temperatures, hardened and rugged enclosures. It qualifies easily as a multi-purposechoice for all PoE device applications and is a very convenient source to meet their requirements with a wide choice of options, providing a very convenient and handy PoE solution.

The Black Box LP004A provides edge access Ethernet ports in a convenient and compact package. For fiber connectivity or additional nonPoE ports, simply add a Black Box LBH100AConverter Switch (two RJ-45and a 10 or 100Mb fiber port) or a heavy duty Edge Switches (six ports with Fiber options) to meet the Fiber requirement. All LP004A

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Power Source PoE Switch models comes with two (2) sets of LED indicators. One set is mounted in the end adjacent to three of the RJ-4ports, and one set is at the beveled edge for easy viewing whenDIN-Railor panel mounted.

Black Box LP004A Power Source Switch requires a heavy-duty power supply of -48VDC

1.4Amps (66 watts total consumption) to provide a 13-15wpower on each port to the PoE unit.The 8-15vdc is also present, but only should

be used to power the LP004A unit when no PoE devices are attached.

2.3 Black Box LP004A with four (RJ-45)Copper ports

The Black Box LP004A chassis houses one main PC board. The power supply is an external AC unit or internal DC via a screw

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

terminal block. The front side of the chassis has three twisted-pairswitched ports and one port is provided on the rear side. All the four ports of the PoE Switch supportauto-cross(MDIX), and perform theauto-crossin theauto-negotiationmode only.

Dual LEDs indicating operating status of ports may be viewed from any direction, and are mounted on the top as well as end for convenience. There are power (PWR) indicators for the unit to validate that the unit is turned ON.

Fig2.1a. Black Box LP004A, Front view (three RJ-45ports on Front side of the unit, as

shown in Fig

Fig 2.1a

For each port, there are Link and Activity (LK/ACT) LEDs indicating traffic and mounted on the top of the unit, whereas the end LEDs mounted next to ports indicate

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

(LK/Act) as LA1, LA2, LA3, LA4 for each of the four ports. 10/100 (ON for 100Mbps), and full/half duplex (F/H LED is ON for full duplex and OFF for Half duplex).

The external DC power plug connector or “jack” is in the right rear of the chassis. The internal DC input terminal block is also provided on the rear side of the unit.

Figure 2.1b. BlackBox LP004A. Rear

 

Fig 2.2c

view (one RJ-45port (not shown) and

 

 

 

 

DC terminal and power adaptor option

Fig. 2.2c

 

on rear side) as shown in Fig 2.1b.

 

 

 

 

 

 

The Black Box LP004A, as shown in is

 

 

an extreme rated unit suitable for

 

 

temperature un-controlledoutdoor

 

 

applications. Specially designed with

 

 

extreme-gradeextended temperature components, the LP004A uses thermal techniques

 

 

 

 

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

for cooling. Mounting options include panel-mounting,DIN-rail,orrack-mounttray. Choices of models for external AC or internal DC powers are available. Ambient temperature rating is–40°Cto +75°C for any of the power input types, AC or DC.

2.4 Black Box LP004A-Series,with four(RJ-45)Copper ports

The Black Box LP004A-Serieschassis houses one main PC board. The power

Fig. 2.2e

supply is an external AC unit or internal DC via a screw terminal block. The front side of the chassis has three twisted-pairswitched ports and one port is provided on the rear side. All the four ports of theLP004A-SeriesPoE switch supportsauto-cross(MDIX), and perform theauto-crossin the autonegotiation mode as well as fixed mode.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Dual LEDs indicate operating status of ports may be viewed from any direction, and are mounted on the top as well as end for convenience. There are power (PWR) indicators for the unit to validate that the unit is turned ON. For each port, there are Link and Activity (LK/ACT) LEDs indicating traffic and mounted on the top of the unit, whereas the end LEDs mounted next to ports indicate (LK/Act) as LA1, LA2, LA3, LA4 for each of the four ports. 10/100 (ON for 100Mbps), and full/half duplex (F/H is ON for full duplex) indicators for port # 2.

The external DC power plug connector (for optional AC PS) or “jack” is in the right rear of the chassis (not included with the unit). The internal DC input terminal block is also provided on the rear side of the unit.

2.5 Frame Buffering and Latency

The Black Box LP004A-SeriesPower over Ethernet (PoE) Switch arestore-and-forward switches. Each frame (or packet) is loaded into the Switch’s memory and

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

inspected before forwarding can occur. This technique ensures that all forwarded frames are of a valid length and have the correct CRC, i.e., are good packets. This eliminates the propagation of bad packets, enabling all of the available bandwidth to be used for valid information.

While other switching technologies such as "cut-through"or "express" impose minimal frame latency, they will also permit bad frames to propagate out to the Ethernet segments connected. The"cut-through"technique permits collision fragment frames, which are a result of late collisions, to be forwarded to add to the network traffic. Since there is no way to filter frames with a bad CRC (the entire frame must be present in order for CRC to be calculated), the result of indiscriminatecut-throughforwarding is greater traffic congestion, especially at peak activity. Since collisions and bad packets are more likely when traffic is heavy, the result ofstore-and-forwardoperation is that more bandwidth is available for good packets when the traffic load is greatest.

When the Switch detects that its free buffer queue space is low, the Switch sends industry standard (full-duplexonly) PAUSE packets out to the devices sending packets to cause “flow control”. This tells the sending devices to temporarily stop sending traffic,

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

which allows a traffic catch-upto occur without dropping packets. Then, normal packet buffering and processing resumes. Thisflow-controlsequence occurs in a small fraction of a second and is transparent to an observer. See Section 4.6 for additional details.

Another feature implemented in Black Box LP004A-SeriesPower over Ethernet (PoE) Switch is acollision-basedflow-controlmechanism (when operating athalf-duplexonly). When the Switch detects that its free buffer queue space is low, the Switch prevents more frames from entering by forcing a collision signal on all receivinghalf-duplexports in order to stop incoming traffic.

The latency (the time the frame spends in the Switch before it is sent along or forwarded to its destination) of the LP004A-SeriesPower over Ethernet (PoE) Switch varies with theport-speedtypes, and the length of the frame is a variable here as it is with allstore-and-forwardswitches. For 10Mb-to-10Mb or 10Mb-to-100Mbor100Mb-to-10Mb forwarding, the latency is 15 microseconds plus the packet time at 10 Mb. For 100Mb-to-100Mbforwarding, the latency is 5 microseconds plus the packet time at 100Mb.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

2.6 Features and Benefits

Small 4-port10/100 Switch unit foredge-of-networkapplications

Whenever Power Source for Ethernet connectivity is needed to connect edge devices into the LAN, the LP004A extreme rated for un-controlledtemperatures, outdoor Switch provide 10/100 switching along with power source in a convenient and compact package.

Installation is “Plug and Play”, operation is transparent to software

The Black Box LP004A-SeriesSwitches operate as a LAN switch, only forwarding those packets from each domain that are needed on the other domains. Internal address tables areself-learning.All ports areauto-cross.

Two sets of LEDs for viewing status from any angle

Each LP004A-SeriesPoE Switch is equipped with two sets (front and side) of LEDs to provide status information when viewed at any angle or mounting arrangement,rack-mount,DIN-Rail,orpanel-mount.

21

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Rugged metal case, Industrial grade

LP004A-Seriesare packaged in a rugged sheet metal enclosures to ensure durability and noise immunity, even when placed in extended temperature environments or high EMI noise sites; e.g industrial or outdoor applications.

DC Power input for LP004A PoE Switch

The 802.3af PoE standard LP004A power source switch required 1.4Amps48VDC to provide the enough power of 13-15wattson eachRJ-45ports. Terminal block for-48VDC input (range of 46V to 60V DC)

Efficient Compact design, for all-purposeconvenient mounting

Featuring a compact metal case, Black Box LP004A-Seriescan be installed in minimal space inrack-mountLE1505-RACK,onDIN-Rail(optional), orpanel-mounted.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

2.7 Applications for LP004A Series Power Over Ethernet Switch(PoE) Example 4a. LP004A (Power Source Switch) for PoE device only

In an Industrial application, where the expansion of their factory network being done to expand the capacity and make it more secure through CCTV camera to monitor the day-today manufacturing process. The blue tooth wireless was also implemented to eliminate the cable wiring between the LP004A switches to provide a neat network setup. Theun-controlledtemperature and providing the electric wiring was the big challenge to meet this requirement.

Black Box LP004A Power source switch is an effective and convenient solution for remote locations where providing power through wire is not only difficult but expensive too. The cost-effectiveand efficient LP004A with the robust enclosure provide a very economical solution through its4-PoERJ-45ports. The Power Source Switch with PoE ports are capable to carry data, power and voice overRJ-45cable using LP004A unit.

The diagram below is one of the multi-purposeapplication of LP004A Power over Ethernet switch, which provide the power to video camera, wireless device effectively via Ethernet ports.

23

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

LE2425A

WWW.Black

PW

F/HR LA3

-48vdcpower

 

 

 

 

 

PW

LA3

 

 

 

 

 

F/HR

 

1

L P 1

L

1 L

 

 

 

0/

K WO 0/

K

0/ K/

OP

 

P

PORT PORTPORT

 

 

O

 

 

 

 

 

 

K/0/1

 

 

 

P

 

 

LBH101Am

 

L

 

 

 

O

 

 

PORT

 

 

 

LA1

LA2

 

LP004A S14

 

 

 

 

Convenient Switch

P

 

 

 

 

 

 

O

 

 

9

 

 

 

10/100

 

 

V

 

 

 

 

D

C WWW.Black

Laptop computer

Convenient

Workstatio

IBM Compatible

PW

F/HR LA3

1

L P

1 L 1 L

 

0/ K/WO

0/ K/ 0/ K/

P

P

PORT

PORTPORT

O

O

L1 LBH101AmPO K/0/

PORT

LA1 LA2

LP004A S14

 

Convenient Switch

P

 

 

O

9

10/100

V

D

 

C WWW.Black

 

Convenient

1 L P 1 L 1 L

0/ K/O 0/ K/ 0/ K/

P PORT PORTPORT O

PW

F/HR LA3

P

O

 

1

L P 1 L

1 L

OP

 

0/

K WO 0/ K

0/ K/

P

PORT PORTPORT

 

O

 

 

 

 

K/0/1

 

 

 

P

 

LBH101Am

L

 

 

 

O

PORT

 

 

LA1 LA2

 

LP004A S14

 

 

 

Convenient Switch

P

 

 

 

 

O

9

 

 

 

10/100

V

 

 

 

D

C WWW.Black

PW

F/HR LA3

 

1

L P

1

L 1

L

OP

 

0/

K/ WO

0/

K/ 0/

K/

P

PORT

PORTPORT

 

O

L1 LBH101AmPO K/0/

PORT

LA1 LA2

LP004A S14

Convenient Switch

P

O

K/0/1

 

P

 

LBH101Am

 

L

 

O

Convenient

PORT

LA1 LA2

 

LP004A S14

 

 

 

Convenient Switch

P

 

 

 

O

 

9

 

10/100

 

V

 

 

D

 

 

Workstatio

C

WWW.Black

 

Convenient Workstatio

9

10/100

V

D

 

C WWW.Black

 

 

100

 

Server

Convenient

Router

IBM Compatible

IBM Compatible

-48vdc

 

Video

power

100

ServerWorkstatio100 IBM Compatible

 

Server

Workstatio

48vdc power

LP004A Power Source Switches used as a reliable cost-effective

expanding solution for the non-stoppingnetwork demand, by providing power,

Data to PoE devices, e.g PoE video camera, and wireless access point

Video

Example 4b. LP004A (Power Source Switch) for PoE device only

24

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

In an another application for Industrial floor, The requirement is to provide the complete floor with wireless point to avoid more cabling mess and connect all the status delivery joint with VOIP phone. The cost-cuttingis the primary concern to make the factory more efficient flow all along.

The LP004A is being recommended to fulfill the edge point requirement, to make it more cost-effectiveand avoid another electrical cable expansionun-necessasary.The sleek industrial proof PoE device, LP004A with its power Source Switch capability, easily meets this demand requirement to provide the power through itsRJ-45cable, and provide a very neat Network setup.

The Black Box LP004A is enabling the efficient deployment of reliable VoIP and wireless networking tools to increase the efficiency of communication across the enterprise. Furthermore, using PoE device like LP004A has significant cost savings, flexibility and reliability advantages over traditional AC power, it reduces the overall cost of network ownership. The PoE device used for this industrial application, VOIP for voice, Wireless points for wi-ficonnection,PoE Clock to synchronize the time with SNTP server for every second correct timings.

25

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

NCM

SCADA

NEA

PLC

 

PLC

LE2425A

 

 

SCADA

 

 

 

WWW Black

 

 

 

PW

LA

-48vdc

 

 

 

 

F/HR

3

 

 

P

POR PORPOR

O

 

power

 

 

 

 

P

 

 

 

L

 

OP

Router

 

 

 

O

 

 

 

 

 

 

K 0/1

LBH101A

LA

 

 

 

POR

LA

 

 

P

 

LP004A S14

1

2

 

 

LA

Convenient Switch

P

 

 

 

F/HW

3

 

 

 

 

R

 

 

O

 

 

 

P

9

 

 

 

 

POR PORPOR

O

 

10/100

 

P

 

V

 

 

O

 

 

D

 

 

 

K 0/1

 

P

C

 

 

 

LBH101A

 

 

 

IBM

L

 

O

 

 

 

POR

 

LA

LA

 

 

 

LP004A S14

1

2

 

 

 

Convenient Switch

P

 

 

 

 

 

 

 

 

 

 

 

 

O

 

 

 

 

9

 

10/

 

 

 

 

V

 

 

 

 

IBM

C

 

 

 

 

 

D

 

 

 

 

 

 

IBM

 

IBM

IBM

 

Wireless points

 

Workstatio

48vdc

 

 

power

IBM

IBM

LP004A Power Source Switches

used as a reliable cost-effectivesolution forWireless points

providing Data, Power and Voice over RJ-45Ports for Industrial application

 

Workstatio

Data to PoE devices, e.g PoE Clock, VOIP phone and

wireless access point

 

IBM

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

3.0INSTALLATION

This section describes the installation of the LP004A Series Power over Ethernet

(PoE) Switch, including location, mountings, power supply options and media connection.

3.1 Locating the PoE Switch Unit

All the LP004A Series Switches operate in transparent half-andfull-duplexmode. The store and forward switch easily takes care of network traffic and can be used as a useful, economical tool to expand an existing network.

The compact and lightweight design of the LP004A Series allows it to be easily installed in almost any location. A Velcro strip may be used for mounting the unit on a vertical surface such as a wall or cabinet, or for securing the unit on a table-topor shelf. Alternatively, metal mounting clips and screws are included for a rugged and secure mounting in any orientation.

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BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Installation of the LP004A Series Power over Ethernet (PoE) Switch is a simple procedure. The installation location is dependent upon the physical layout of the Ethernet network and associated cabling. Make sure the unit is installed in a location that is easily accessible to an AC power outlet or the appropriate DC source and where cooling is not inhibited. The green Power (PWR) LED must turn ON when power is applied.

3.2 LE1505-RACKfor Rack Mounting of LP004A Series Switches

For 19” rack-mountingof LP004A series Power over Ethernet (PoE) Switch, arack-mounttray is available, theLE1505-RACK.The Power over Ethernet (PoE) Switch are mounted with the DC power jack in the back, with the fiber and theRJ-45

28

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

connectors in the front. Any mix of the Power over Ethernet (PoE) Switch and/or Converters may be placed on a tray, up to a maximum of 16 units. (The mounting spaces of the LE1505-RACKare specific to the products and will not permit other models to be properly mounted).

In a typical installation, the LE1505-RACK,19”rack-mounttray will hold a few (three to eight) LP004A Series Power over Ethernet (PoE) Switch, with their power supplies plugged into power strips (not included) in the rear area of the tray. Metal mounting screws in thebottom-fronthold the Power over Ethernet (PoE) Switch firmly in place. Thebeveled-topedge of the units permits the LEDs of each unit to be viewed for operational status, even when the units are very close together.

3.3 LH1505P-RACKfor Rack Mounting the Power Over Ethernet Switch(PoE)

The LH1505P -RACKis another option available for Rack Mounting themix-matchof LP004A Series Power over Ethernet (PoE) Switch together in 19”rack-mounttray. TheLH1505P-RACKmodel comes withbuilt-incommon universal AC power supply rated at

29

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

40 watts at 50C ambient, 12VDC output, and supporting up to 10 MC units. (Six tray positions for MC’s are not wired for power). Typically, 3 to 8 MC units are in use with a LH1505P-RACK,with expansion space left available.

The LH1505P-RACKholds up to 10mix-matchof 10 or 100Mbps (converter) and 100Mbps Black Box Power

Over Ethernet Switch(PoE). (The MC mounting spaces of the LH1505P-RACKare specific to the 10Mb “LBH100A”- series and the 100Mbps “LP004A” series, and do not permit other models or other sizes to be put in the tray).

The side-viewpicture shown here is an example of an installation of the modelLH1505P-RACK,19”rack-mounttray, holding a few 10 and 100Mbps Power over Ethernet

30

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

(PoE) Switch, each with their power input plugged into the built-incommon AC power supply in the rear area of the tray. (PS units that come with the MC’s are not used)..

Metal mounting screws in the bottom-fronthold each of the Converters and Power over Ethernet (PoE) Switch secure in the tray, separately removable for service. The dual LEDs permit viewing operating status of the Converters and Power over Ethernet (PoE) Switch from any angle.

3.4 DIN-Railmounting option

The LP004A Series Power Over Ethernet Switch(PoE), designed to use in “Factory Floor” Industrial Ethernet environments, are also available for DIN-Railmounting in an enclosure having DIN Rails.

A LP004A is shown alongside the

DIN-Rail-MC2bracket

31

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

The metal DIN-Railmounting hardware is optional and needs to be ordered as a separate item, e.g. Model#DIN-RAIL-MC2.

It comes with four screws to attach the bracket to the MC unit. The rail clip is spring-loadedwith apull-uplatch at the top for easy“snap-on”attachment and removal.

The LP004A Series models with “D” have 24VDC power, and have the DIN- Rail-MC2bracket included and assembled with the MC unit at the factory.

.

3.5 Power Requirement for Black Box LP004A Power Source Switch

POWER INPUT: Total Power Consumption: 66 watts max. (1.4A @48VDC)

Terminal block for -48vDC input (range of 46 to 60V dc), built in for +,- ,ground.

NOTE:The 8-15VDC option is also present, but can only be used to power the LP004A unit when no PoE devices are attached. (Optional)

32

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

POWER OUTPUT:

PoE available on all four RJ-45ports via Ethernet twisted pair cabling on port pins using spare pairs 4,5(+)7,8(-),not the data pair1,2(-),3,6(+)

802,3af Power Consumption: 61.6 watts max. (15.4(max)/port) PoE Ports Output voltage: 44 to 57 VDC

Over Current Protection, per port: re-settablefuse

Power Consumption: Typical 3 watts, 4 watts max.

3.6 Powering the LP004A Series (DC internal) with –48VDCpower input

Some models (Hardened and extreme rated) of the LP004A-Seriesare reliably equipped with an internal DC power supply, and havebuilt-inscrew terminals for secure attachment of the power leads. Three models support a range of power input types. The three model choices are for use with-48VDCpower. DC power input may be chosen forhigh-availability.

33

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

The extended temperature capability of the DC-poweredhardened LP004A’s can go temperature uncontrolled environments, rated at–40`Cto +75`C. If indoors, the DC jack is also present and optionally can be used with an external AC power supply.

DC Power Terminals: “+”, “-”, gnd

GND: Terminal for “earth” or ground wire connection to the LP004A chassis

Input Voltage: 36 – 60V DC(-48VDC)

Input current: 0.2 ampmax.(-48V

DC)

Power Consumption of the unit:

3 watts typical, 4 watts max.

34

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

3.7 LP004A , DC-powered,-48VDCInstallation

This section describes the proper connection of the -48VDCleads to the DC power terminal block on the LP004A hardened PoE (as shown in Figure ). The DC terminal block on the LP004A is located on the left side of the unit and is equipped with three (3)screw-downlead posts. The power terminals are identified as positive (+) and negative(-),and they are floating inside the unit so that either of the terminal may be grounded by the user if desired. The chassis is “earth” or ground (GND).

The connection procedure is straightforward. Simply insert the DC leads to the LP004A’s power terminals, positive (+) and negative (-)screws. The use of Ground (GND) optional; it connects to the LP004A chassis. Ensure that each lead is securely tightened from the top, as shown here.

35

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

NOTE: Always use a voltmeter to measure the voltage of the incoming power supply and figure out the +ve potential lead or -vepotential lead. The more +ve potential lead will connect to the post labeled “+ve” and the rest to the“-ve”.

The GND can be hooked up at the last.

When power is applied, the green PWR LED will illuminate.

3.8 Connecting Ethernet Media

The LP004A Series PoE Switch can be connected to only one media types i.e. copper (RJ-45)types, runt at100BASE-TX,10BASE-T.CAT 5 cables should be used when making100BASE-TXconnections. When the ports are used as10BASE-Tports, CAT 3 may be used. In either case, the maximum distance for unshielded twisted pair cabling is 100 meters (328 ft).

36

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Media

IEEE Standard

Connector

Twisted Pair (CAT 5)

10BASE-T

RJ-45

Twisted Pair (CAT 5)

100BASE-TX

RJ-45

NOTE : It is recommended that high quality CAT. 5 cables (which work for both 10 Mbps and 100Mbps) be used whenever possible in order to provide flexibility in amixed-speednetwork, sinceP80-seriesswitch ports areauto-sensingfor either 10 and 100Mbps. Note that theauto-crossfunction does not operate, if the port is fixed or not supportingauto-negotiation.

3.8.1Connecting Twisted Pair (RJ-45,CAT 3 or CAT 5, Unshielded or Shielded)

The following procedure describes how to connect a 10BASE-Tor100BASE-TX

twisted pair segment to the RJ-45port. The procedure is the same for both unshielded and shielded twisted pair cables.

37

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

1. Using standard twisted pair media, insert either end of the cable with a RJ-45plug into theRJ-45connector of the port. Note that, even though the connector is shielded, either unshielded or shielded cables and wiring may be used.

2.Connect the other end of the cable to the corresponding device.

3.Use the LINK LED to ensure proper connectivity by noting that the LED will be illuminated when the unit is powered and proper connection is established. If this does not help, ensure that the cable is connected properly and that the device on the other end is powered and is not defective.

4.For Port # 1 or 1SW, if the LINK LED is not illuminated, move the switch which has a cross-overorup-linkfor linking to another hub or Switch.

3.8.2Connections to NICs which support Auto-Negotiation,RJ-45ports

The copper ports of LP004A-SereisPower over Ethernet (PoE) Switch will function properly with NICs (Network Interface Cards) which supportAuto-Negotiation,and the Fast Link Pulse (FLP) coding for the100BASE-TXsignaling system. When connecting a NIC to theLP004A-Series,it may be necessary to reload the NIC drivers on the user device if the NIC has been communicating with a protocol other than 100BASETX (such as10BASE-T).When 100Mb operation is agreed and in use, the 10/100 LED is illuminated steady ON and is OFF, if 10 Mbps traffic.

38

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

4.0OPERATION

4.1Dual-SpeedFunctionality, and Switching

The LP004A Series Power over Ethernet (PoE) Switch provide four switched ports (three ports in the front and one on the rear). The architecture supports a dual speed switching environment, with standard auto-negotiationcapability.

The switched RJ-45ports are fullorhalf-duplexauto-sensingfor mode and speed, andauto-crossfor plug polarity. When the connected device is 10 Mbps, the LP004As obeys all the rules of 10 Mbps Ethernet configurations. The 10 Mbps users can “communicate” with 100Mbps users as well as other 10 Mbps users through the switch. Similarly, the 100Mbps traffic obeys the rules of 100Mbps Ethernet, and can communicate with 10 Mb and 100Mb users.

39

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

LP004A Series units are plug-and-playdevices. There is no software configuring to be done at installation or for maintenance. The internal function is described below.

Switching, Filtering and Forwarding

Each time a packet arrives on one of the switched ports, the decision is taken to either filter or to forward the packet. Packets whose source and destination addresses on the same port segment will be filtered, constraining them to one port and relieving the rest of the network from processing them. A packet whose destination address is on another port segment will be forwarded to the appropriate port, and will not be sent to the other ports where it is not needed. Packets needed for maintaining the operation of the network (such as occasional multi-castpackets) are forwarded to all ports. The LP004A Series Power Over Ethernet (PoE) Switch operate in thestore-and-forwardswitching mode, which eliminates bad packets and enables peak performance to be achieved when there is heavy traffic on the network.

40

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

Switching, Address Learning

The LP004A Series units have address table capacity of 2K node addresses, and are suitable for use in large networks. They are self-learning,so that as nodes are added or removed or moved from one segment to another, the LP004ASeries switch automatically keeps up with node locations.

An address-agingalgorithm causesleast-usedaddresses to fall out in favor of newfrequently-usedaddresses. To reset the address buffer, cycle powerdown-and-up.

4.2 Auto-cross(MDIX),Auto-negotiationandSpeed-sensing

The RJ-45ports of LP004A POE Switch independently supportauto-cross(MDI or MDIX) inauto-negotiationmode and will work properly with all the other connected devices withRJ-45port whether it supportsAuto-negotiationor not (e.g 10Mb Hub, media converter) or fixed mode at 10Mb or 100Mb Half/Full Duplex(managed switch). Nocross-overcable is required while using the 6K8’s copper port to other devices. Operation is according to the IEEE 802.3u standard.

41

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

When a RJ-45cable connection is made, and each time a LINK is enabled,auto-negotiationtakes place. The LP004A advertises its capability for 10 or 100 Mbps speed and F/H duplex mode, and the device at the other end of the cable should similarly advertise / respond and both sides will agree to the speed and mode being used. Depending upon the device connected, this will result in agreement to operate at either 10 Mbps or 100Mbps speed, fullorhalf-duplexmode.

4.3 Dual LEDs, Front-panelandside-panel(LP004A Series)LED Description

PWR Illuminates GREEN to indicate power applied.

LK/ ACT Steady ON for LINK w/no traffic, blinking for activity per port. LINK will turn off in the event connectivity is lost between the ends of the twisted pair segment or a loss of power occurs in the unit or remote device. The Link ports are also represented by LA1, LA2, LA3, LA4 (Steady ON for Link or steady OFF indicates no Receive Activity).

10/100 Steady ON for 100Mb speed, OFF for 10Mb speed per port

42

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

F/H Steady ON for Full duplex mode, OFF for half duplex per port

5.0TROUBLESHOOTING

All BLACK BOX®Ethernet products are designed to provide reliability and

consistently high performance in all network environments. The installation of LP004A Series 10/100 Mb/s Switches is a straightforward procedure (see INSTALLATION, Section 3.0); the operation is also straightforward and is discussed in Section 4.

Should problems develop during installation or operation, this section is intended to help locate, identify and correct these types of problems. Please follow the suggestions listed below prior to contacting your supplier. However, if you are unsure of the procedures described in this section or if the LP004A Series 10/100 Mb/s Switch is not performing as expected, do not attempt to repair the unit; instead contact your supplier for assistance or contact BLACK BOX Customer Support.

43

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

5.1Before Calling for Assistance

1.If difficulty is encountered when installing or operating the unit, refer back to the Installation Section of the applicable chapter of this manual. Also check to make sure that the various components of the network are interoperable.

2.Check the cables and connectors to ensure that they have been properly connected and the cables/wires have not been crimped or in some way impaired during installation. (About 90% of network downtime can be attributed to wiring and connector problems.)

3.Make sure that an AC power cord is properly attached to each

LP004A Series unit. Be certain that the AC power cord is plugged into a functioning electrical outlet. Use the PWR LEDs to verify each unit is receiving power.

4.If the problem is isolated to a network device other than the LP004A and LBH110 Series 10/100 Mb/s switch product, it is recommended that

the problem device is replaced with a known good device. Verify whether or

44

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

not the problem is corrected. If not, go to Step 5 below. If the problem is corrected, the LP004A Series Switch and its associated

cables are functioning properly.

5.If the problem continues after completing Step 4 above, contact your supplier of the LP004A Series 10/100 Mb/s Switch unit or if

unknown, contact BLACK BOX, Inc by phone at (724) 746-5500or by

other appropriate method

5.2When Calling for Assistance

Please be prepared to provide the following information.

1.A complete description of the problem, including the following points:

a.The nature and duration of the problem;

b.Situations when the problem occurs;

c.The components involved in the problem;

d.Any particular application that, when used, appears to create the problem;

45

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

2.An accurate list of BLACK BOX product model(s)involved, with serial number(s). Include the date(s) that you purchased the products from BLACK BOX.

3.It is useful to include other network equipment models and related hardware, including Convenient computers, workstations, terminals and printers; plus, the various network media types being used.

4.A record of changes that have been made to your network configuration prior to the occurrence of the problem. Any changes to system administration procedures should all be noted in this record.

46

BLACK BOX® Power Over Ethernet Switch(PoE) Installation and User Guide

5.3 Return Material Authorization (RMA) Procedure

Shipping and Packaging Information

Should you need to ship the unit back to Black Box Corporation, please follow these instructions:

1. Package the unit carefully. It is recommended that you use the original container if available. Units should be wrapped in a "bubble-wrap"plastic sheet or bag for shipping protection. ( You may retain all connectors and this Installation Guide.)

CAUTION : Do not pack the unit in Styrofoam "popcorn" type packing material. This material may causeelectro-staticshock damage to the unit.

2.Clearly mark the Return Material Authorization (RMA) number on the outside of the shipping container.

3.Black Box Corporation is not responsible for your return shipping charges.

4.Ship the package to:

Black Box Corporation

1000 Park Drive

Lawrence, PA 15055

Phone: (724) 746-5500

Fax: (724) 746-0746

47