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Managed Fiber Switch

1. bL SISE 30 4 1 SWITCHING FUNCTIONALITY eee ene een een n eene 30 AD STATUS eee RIEN Rt 30 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 4 3 UP LINK MANUAL SWITCHES SET AS FOR RJ 45 PORT ONLY 31 4 4 AUTO NEGOTIATION FOR FAST ETHERNET COPPER 31 4 5 FLOW CONTROL IEEE 802 3X 5 0 33 4 6 POWER BUDGET CALCS FOR BLACK BOX MANAGED FIBER SWITCH PM S WITH FIBER tcs 33 5 0 INTRO BLACK BOX MANAGED FIBER SWITCH MNGMT FBR SWITCH PORT MDLS eere eese eese eto seen sesto stesse tates ease te eost eaae 35 5 1 INSPECTING THE PACKAGE AND PRODUCT sess 35 5 2 PM MODULE 2 1 4242 200010000000000000000000000000 ii 35 5 2 1 LE2429C 4 10 100Mbps RJ 45 amp 2 100Mb mlti mde FX ST 36 5 2 1 LE24XXX 4 10 100Mbps RJ 45 amp 2 10Mb mlti mde FX ST 36 5 2 1b LE2427C 4 10Mb mlti mde FX ST twist lock Module 37 5 2 2 LE2429C 4 10 100Mbps RJ 45 amp 2 100Mb mlti mde 37 5 2 3 LE2431C 4 10 100Mbps RJ 45 amp 2 100Mbps sngl mde FX SC 38 5 2 4 LE24XXX 4 10 100 Mb copper port amp 2 100Mbps sngl mde 36 5 2 5 LE2436C 8 100Mb mlti md FX MTRJ Small Form factor 39 35
2. 3 4 Powering the LE2425A Managed Fiber Switch The Black Box Managed LE2425A Switches incorporate an internal universal power supply and have a recessed male IEC connector for the AC power cord at the left rear A manual power ON OFF switch is adjacent A six foot 115 VAC 60 Hz standard power cord is supplied with each unit shipped within the United States and Canada The auto ranging power supply supports installation environments where the AC voltage is from 90 to 260 volts with a power input frequency between 47 and 63 Hz The 25 port units will consume over 20 watts of power typically When connecting the Ethernet cabling there is no need to power down the unit Individual segments can be connected or disconnected without concern for AC power related problems or damage to the unit Power supply options are available to suit theLE2425A Switches to special high availability communications and or heavy industrial grade applications including 48VDC 24VDC and 125VDC with single DC input 48VDC 24VDC and 125VDC with dual source DC input See the Appendices of this manual for more details Use an RFQ for other variations N N IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 3 5 LE2425A Port Module Installation The Black Box Managed LE2425A Switches are normally received from the factory with all required PM modules installed There may be situations where cards need to be added or replaced In
3. eee 12 2 2 9 Managed Network Software MNS BB for Black 13 2 3 FEATURES AND BENEFITS cuicos 14 2 4 APPLICATIONS ose se Inte C DESEE REI 15 3 0 INSTALLATION 17 3 1 LOCATING BLACK BOX MANAGED FIBER SWITCHES eee 18 3 2 CONNECTING ETHERNET MEDIA isin rinsi 19 3 2 1 Connecting Fiber Optic ST type twist lock sss 19 3 2 2 Connecting Fiber Optic SC type Snap In esse 19 3 2 3 Connecting Single Mode Fiber Optic sss 20 3 2 4 Connect Twisted PR RJ 45 CAT3 CATS Unshield or Shield 20 3 2 5 Connect Twisted PR or better Unshielded or Shielded 20 3 3 TABLE TOP OR SHELF MOUNTING eee nennen 21 3 3 1Rack mounting for 19 RETMA racks regular Black Box Managed fiber switchs seen eene 21 3 3 2 Rack mounting Reverse version of the Black Box Managed fiber O IR e M gae pote dea Error Bookmark not defined 3 4 POWERING THE LE2425A S MANAGED FIBER SWITCH eene 22 3 5 LE2425A PORT MODULE PM INSTALLATION 2 2 23 3 5 1 Preparation for Installing and Removing PMs sss 23 3 5 2 Installing PM Cards in the Black Box Managed fiber switch 25 3 6 CONNECTING THE CONSOLE TERMINAL TO BLACK BOX MANAGED FIBER SWITCH MANAGEMENT ooocococcooonoonnoononnnonnnco nono nooo nennen nnns 29 4 0 OPERATION 6
4. If the equipment is mounted in an enclosed or multiple rack assembly the environmental temperature around the equipment must be less than or equal to 50 C If the equipment is mounted in an enclosed or multiple rack assembly adequate air flow must be maintained for proper and safe operation If the equipment is mounted in an enclosed or multiple rack system placement of the equipment must not overload or load unevenly the rack system If the equipment is mounted in an enclosed or multiple rack assembly verify the equipment s power requirements to prevent overloading of the building s electrical circuits If the equipment is mounted in an enclosed or multiple rack assembly verify that the equipment has a reliable and uncompromised earthing path 3 1 Locating Black Box Managed LE2425A Switch The location of a Black Box LE2425A fiber Switch is dependent on the physical layout of the network Typically the Switch is placed in a central wiring location where groups of network devices need to be connected in order to communicate with each other These Switches are typically rack mounted in a wiring closet see Section 3 3 2 below but because they have rubber feet they can also be installed on a shelf or table top unit The compact size allows it to be easily placed in an office or lab area and it can also be either shelf of wall mounted see Section 3 3 1 below Locate an AC receptacle that is within six feet 2 meters of the intend
5. Servicio por personal calificado deber ser provisto cuando El cable de poder o el contacto ha sido u Objectos han ca do o l quido ha sido derramado dentro del aparato o El aparato ha sido expuesto a la lluvia o El aparato parece no operar normalmente o muestra un cambio en su desempe o o El aparato ha sido tirado o su cubierta ha sido da ada IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 TABLE OF CONTENTS PAGE 1 0 SPECIFICATIONS sscsccsscssecssscossessasoseessasessoosscassnsensucsossasossnssasessessaeiseusensess 1 TECHNICAL SPECIFICATIONS cocido iii dais 1 1 2 ORDERING 2 00 ee e en ene n een nennen 4 24 INTRODUCTION nip oae Iusto Poveda TR obe a eua 6 2 1 INSPECTING THE PACKAGE AND PRODUCT see eee 6 2 2 PRODUCT DESCRIPTION BLACK BOX MANAGED LE2425A SWITCH 7 2 2 1 Black Box Managed fiber switch LE2425A chassis sss 8 2 2 2 8 port SFF fiber modules LE2436CM LE2437C 100Mb fiber 9 2 2 3 Eight Port Copper Module LE2428C sse 10 2 2 4 6 Port Combo Modules 4 10 100 RJ 45 amp 2 100Mb fiber 10 2 2 5 Four Port 10 Mb mm Fiber ST Modules sss 11 2 2 6 Gigabit 1000Mbps port modules eee 12 2 2 7 Packet Prioritization 802 1p 008 12 2 2 8 Frame Buffering and Flow Control
6. desktop links 8 Port 100Mbps multi mode LC fiber port When installed in a Black Box LE2425A Switch it supports fiber optic cable distances up to the IEEE standard 100Mbps distance limits 1 e typically 15km at full duplex and 412m at half duplex Cacrivrry 2 FULL HALF The compact size of the LC 3 LINK Connector reduces the size of wiring panels in wiring closets while providing the advantage of future proof fiber optic technology The cable end is a plug in connector with both fiber strands terminated in one housing that cannot be improperly inserted Each port has an Activity ACT LED indicating packets being received a Link LK LED indicating proper connectivity with IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 the remote device when lit and a FDX HDX LED indicating full duplex mode when lit or half duplex when off 5 2 8 special model Combo 4 100Mbps multi mode LC small form factor and 4 10 100 Mbps RJ 45 Connector The special model Module is a combo module with a combination of copper and Fiber Small Form Factor LC type ports The small size 4 Port 10 100Mbps amp 4 port 100Mbps of LC connectors give an ait m advantage of having more ports on one module The XXXX is equipped with 4 10 100 RJ 45 ports and 4 LC Small form factor multi mode fiber ports When installed in a Black Box Managed LE2425A Switch it 5 supports the stan
7. NETWORK SERVICES Copyright 2003 Black Box Corporation All rights reserved 1000 PARK DRIVE LAWRENCE 15055 1018 724 746 5500 FAX 724 746 0746 BLACK BOX NETWORK SERVICES mmm a wn a e a 1 Managed Fiber Switch August 2003 LE2425A Front view Rear view CUSTOMER Order toll free in the U S 24 hours 7 A M Monday to midnight Friday 877 877 BBOX SUPPORT FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 INFORMATION Mail order Black Box Corporation 1000 Park Drive Lawrence PA 15055 1018 Web site www blackbox com E mail info blackbox com IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 Black Box Managed Fiber Switches Installation and User Guide Trademarks UL is a registered trademark of Underwriters Laboratories Important The LE2425A Managed Fiber Switches contain no user serviceable parts Attempted service by unauthorized personnel shall render any and all warranties null and void If problems are experienced with LE2425A consult Section 6 Troubleshooting of this User Guide 2003 Black Box Corporation Printed in the United States of America Contacting Black Box Corporation Please use these mailing address and phone a
8. Black Box LE2425A s front view Status LEDs are part of each port module and are viewable when connecting the Ethernet media A regular rack mount LE2425A is shown in Figure 2 2 1a On Reverse rack mount models there is a duplicate set of LEDs on the other front side for normal status viewing from that direction Of course with management the port status data is also available in software IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 2 2 2 Eight port SFF fiber modules LE2436C LE2437C 100Mb fiber Fig 2 2 2 SFF Fiber Port Modules 8 port LE2436C to the left and LE2437C below In an eight port SFF 1 Small Form Factor fiber port module all of the fiber ports are of the same speed 100Mb but mode and connector type can vary in each 4 port half of the module Models are available with Small Form Factor SFF are multi mode MTRJ or LC type connectors and single mode LC type connectors The 100Mb fiber eight port modules for the Black Box Managed fiber switch s normally are set factory default to operate in full duplex mode for best fiber distance and performance Using the LE2425A s MNS BB software the user may select full or half duplex mode per port through set up of the software See Black Box Managed fiber switch MNS BB Software Manual for the flexibility to adapt to any FDX or HDX type of Fast Ethernet devices There are three
9. Managed Fiber Switch Installation and User Guide 08 03 C5 1 UL Requirements C6 0 C7 0 Peres wn The following must be adhered to in order to conform to UL requirements Minimum 18 AWG cable for connection to a Centralized DC power source Minimum 14 AWG cable for connection to earthing wiring Use only with Listed 10 A circuit breaker provided in building installation Complies with FDA radiation performance standards 21 CFR subchapter J or equivalent Fastening torque of the lugs on the terminal block 9 inch pound max Centralized DC Power Source cable securement use at least four cable ties to secure the cable to the rack at least 4 inches apart with the first one located within 6 inches of the terminal block ORDERING INFORMATION To order the optional Dual Source 48 VDC power supply factory installed order Dual Src48V as a separate line item following the product model Example LE2425A 48VDC Dual Src 48V for the regular DS model with no ON OFF switch or Dual Sre48V SWITCH with the ON OFF manual switch Similarly order the Dual source 24VDC or Dual source 125VDC as a separate line item following the product model Example LE2425A 24VDC or LE2425A 125VDC Dual Src24V for regular models with no ON OFF switch Or Dual Src125V Switch for models with the ON OFF switch OPERATION Operation of the Dual Source LE2425A s 48VDC 24VDC and 125VDC Switch models are identical to that of the standard mode
10. 10 100Mbps and fiber optic ports at 100MB The Combo module is equipped with dual mode ST type connectors and dual speed copper ports The ST connector functions 4p 44 10 100Mbps and 2 100 Mb ST Fiber Port a fiber optic transceiver to support 100BASE FX network segments When installed in a LE2425A Managed Fiber Switch the copper port supports the standard distance 100m on each port and the fiber port O LINK 10 100 supports fiber optic cable distances 3 ACTIVITY Q FULL HALF up the IEEE standard 100Mbps distance limits i e typically 2km at full duplex and 412m at half duplex Each port has an Activity ACT LED indicating packets being received a Link LK LED that indicates proper connectivity with the remote device when lit and FDX HDX LED to indicate full duplex mode when lit or half duplex when off The 10 100 LED indicates the speed if the LED is ON 100Mbps if it is OFF 10Mbps 5 2 la 4 10 100Mbps RJ 45 and 2 10Mb multi mode FX ST twist lock Combo Module The XXXXX is a six port combo module that looks similar to the 100Mb combo module with the exception of 10Mb speed at the ST fiber module The ST connector functions as a fiber optic transceiver to support IOBASE FX network segments When installed in a LE2425A Managed Fiber Switch the copper port supports the standard distance 100m on each port and the fiber port supports fiber optic cable distances up the IEEE standard 10Mbps distance lim
11. 200 DE24 XXX m i M Me ul db Reb ee at LER Mb end eise tbt 39 3 2 6 EE24 XXX ete E eoe e ur bec ade 40 etn eM Pd m a ARE tes eR 40 SA DEI POP qe Een 41 5 2 9 LE2428C Twisted Pair 10 100Mb Port sss 41 5 2 10 LE2434C Gigabit fiber 1000Mb multi mode SC 009 42 5 2 11 LE24XXX Gigabit fiber 1000Mb multi mode SC ConError Bookmark 3 242 EL E2433 NERA RN 43 6 0 1 1 1 esses eo esse teens pase eoa 44 6 1 BEFORE CALLING FOR ASSISTANCE ERROR BOOKMARK NOT DEFINED 6 2 WHEN CALLING FOR ASSISTANCE ERROR BOOKMARK NOT DEFINED 6 3 RETURN MATERIAL AUTHORIZATION RMA PROCEDUREERROR BOOKMARK N 6 4 SHIPPING AND PACKAGING INFORMATIONERROR BOOKMARK NOT DEFINED APPENDIX A WARRANTY INFORMATIONERROR BOOKMARK NOT D APPENDIX B INTERNAL DC POWER SUPPLY OPTIONS 45 APPENDIX C INTERNAL DC DUAL SOURCE POWER OPTION 49 Revisions 08 03 Initial Release of the user manual IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 1 0 SPECIFICATIONS 1 1 Technical Specifications Performance Filtering Forwarding Rate Ethernet 14 880 pps Fast Ethernet 148 800 pps Gigabit Ethernet 1 488 000 pps Switching Processing Type Store and Forward with IEEE 802 3x full duplex flow control non blocking Data Rate 10Mbps 100Mbps and 10
12. 21 15 17 5 70 LXSC40 mode 70 GBIC 1000Mb e 1550 9 125 3 0 23 18 20 5 102 LXSC70 mone Cable Wave hdx length nm lu N luso Note The use of either multi mode or single mode fiber to operate at 100Mbps speed over long distances i e in excess of approx 400 meters can be achieved only if the following factors are both applied The 100Mb fiber segment must operate in full duplex FDX mode i e the full duplex factory default setting for 100Mbps fiber ports must be used and e The worst case OPB of the fiber link must be greater than the fiber cable passive Attenuation Attenuation Cable loss LED aging loss Insertion loss safety factor IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 5 0 5 1 5 2 Introduction LE2425A s Managed Fiber Switch Port Modules This chapter describes each Port Module PM including appearance functionality and status displays Inspecting the Package and Product This section applies only to PMs shipped as separate items i e LE2425A s PMs are not factory installed in a Black Box s LE2425A PM slot Examine the shipping container for obvious damage prior to installing a LE2425A s PM notify the carrier of any damage 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
13. Connecting Fiber Optic ST type twist lock The following procedure applies to installations using a PM with ST type fiber connectors This procedure applies to ports using aLE2425A module MST type port 1 Before connecting the fiber optic cable remove the protective dust caps from the tips of the connectors on the PM Save these dust caps for future use 2 Wipe clean the ends of the dual connectors with a soft cloth or lint free lens tissue dampened in alcohol Make certain the connectors are clean before connecting Note One strand of the duplex fiber optic cable is coded using color bands at regular intervals you must use the color coded strand on the associated ports at each end of the fiber optic segment 3 Connect the Transmit TX port light colored post on the LE2425A s PM to the Receive RX port of the remote device Begin with the color coded strand of the cable for this first TX to RX connection 4 Connect the Receive RX port dark colored post on the PM to the Transmit TX port of the remote device Use the non color coded fiber strand for this 5 LINK LED on the front of the PM will illuminate when a proper connection has been established at both ends and when power is ON in the unit If LINK is not lit after cable connection the normal cause is improper cable polarity Swap the fiber cables at the PM connector to remedy this situation IBLACK BOX Managed Fiber Switch Installation and User G
14. LE2430C 4 2 module w four RJ 45 ports and two 2km mm FX SC s LE2431C 4 2 module w four RJ 45 ports and two 20km Sgl m FX SC s LE2436C SFF Fiber module w eight 100Mb mm FX connectors LE2437C SFF Fiber module w eight 100Mbps sgl m FX LC connectors LE2435C Blank cover for one A B or C module slot opening in a Black Box Managed fiber switch chassis LE2432C One port D slot Gigabit module uses one LE24254 slot and provides one GBIC open transceiver port for a user selectable GBIC connector module One port A B C slot Gigabit module uses one LE2425A slot and provides one GBIC open transceiver port for a user selectable GBIC connector module GBIC transceiver module for use in LE2432C or LE2433C one SX port with mm SC fiber connector IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 Request quote for other Port Modules that may be configured and GBIC Transceivers IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 2 0 Introduction 2 1 Inspecting the Package and Product Examine the shipping container for obvious damage prior to installing this product notify the carrier of any damage that 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 1 Black Box Managed fiber switch LE2425C base unit configured with user selec
15. LED s per fiber port The Link LK LED indicates ready for operation on that port when lit the F H LED indicates operation in full duplex mode when ON half duplex when OFF and the blinking ACT LED indicates receiving Activity on the port A fiber cable must be connected into a SFF port and the Link LK indicator for that port must be ON indicating there is a powered up device at the other end of the cable in order for a LK LED to provide valid indications of operating conditions on that port BLACK BOX Managed Fiber Switch Installation and User Guide 08 03 223 Eight Port Copper Module LE2428C TheLE2425A s 8 port Copper port module model LE2428C provides eight 10 100Mb switched RJ 45 ports The 10 100Mb switched ports normally as a default setting are independently N way auto negotiating for operation at 10 or 100Mb speed in full or half duplex mode i e each independently selects a mode and speed to match the device at the other end of the twisted pair cable See Section 4 3 for auto negotiation details On the model LE2428C module there are four LEDs for each port two in the connector and two separate The LK Link LED indicates ready for operation on that port when lit The blinking ACT Activity LED indicates receiving Activity on that port when lit The 10 100 LED indicates operation at 100Mb speed when ON and at 10 Mb speed when OFF when auto negotiation is not disabled The FDX HDX LED is O
16. Software enabled features For additional information about MNS BB see the Black Box Managed fiber switch MNS BB Software User Guide a separate document IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 2 3 Features and Benefits Managed switching for high performance Ethernet LANs Black Box Managed LE2425A Switches provide non blocking all ports can run at full speed at once performance with standard Managed Networks Software MNS BB BB included They are typically used in LAN traffic centers with 16 to 24 100Mb ports and one or 2 Gigabit ports for backbone connections where managed network services are desired Switching services includes 802 1p QoS packet prioritization The Managed LE2425A Switch hardware supports QoS giving packet processing priority to priority tagged packets according to the IEEE 802 1p standard For port and application specific priorities the QoS software may be configured by the user Features Fiber Built In Managed LE2425A Switches are designed to naturally include fiber ports and support mixes of multi mode and single mode 10 Mb 100Mb and 1000Mb speed full and half duplex classic Small Form Factor SFF and GBIC fiber connectors RJ 45 10 100 ports can also be configured in the mix of port types Modular design for port flexibility in a 1U space saving rack mount package The 1U LE2425A switch chassis has 4 slots for port configurations Family of 4 6 or 8 port modules a
17. being received a Link LK LED that indicates proper connectivity with the remote device when lit and a FDX HDX LED to indicate full duplex mode when lit or half duplex when off The 10 100 LED indicates 100Mbps speed when lit and 10Mbps speed when off To distinguish the single mode LE2430C from the multi mode LE2431C the label Sgl M is at the top of the faceplate of the LE2431C 5 2 8 special model 10 100 Mb copper port and 2 100Mbps single mode FX SC type snap in connector The special model is also a Combo module equipped with 4 dual speed copper ports and 2 Single mode Long Reach SC type connectors It provides a combination of copper and Fiber functions in one module to the 2425 Switches supporting four Copper and two single mode Long Reach fiber network segments The special model when installed in a LE2425A Managed Switch has copper supporting the 100m distance and Fiber supporting single mode fiber cable lengths of as much as 40 Km see Power Budget Section 4 5 Each port has an Activity ACT LED indicating packets being received a Link LK LED indicating proper connectivity with the remote device when lit and a 38 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 FDX HDX LED indicating full duplex mode when lit or half duplex when off The 10 100 LED indicates the speed for the copper port which is 100Mbps when the LED is ON and 10 Mb when the LED is OFF 5 2 5
18. cases where additional cards are needed the faceplate for an available front mounted slot must be removed The following procedure describes this operation 3 5 1 Preparation for Installing and Removing PMs STOP Be sure the power cord is unplugged from the chassis before attempting to remove and or replace any PM cards Failure to do so may result in damage to the unit and will void the warranty Caution Avoid Static Discharge The port modules like most electronic equipment are sensitive to static discharge Use proper ESD measures when handling port modules Step 1 sure the PM Card package has all necessary accessories to install it properly Each PM Card package except the Gigabit for field installation contains Daughterboard Bigger and Granddaughter board smaller three 5 8 stand offs for Granddaughter board six 4 40 Pan Head screws along with Front panel face plate package The Front panel faceplate package includes 3 retainer brackets and six 2 56 flat head screws NOTE Every PM Card package comes with their matching Daughter and Granddaughter board The copper PM card should not work properly if mixed with other Fiber combo PM card packages Always install the PM module separately one by one to avoid the mixing Step 2 Remove Chassis Cover The Black LE2425A switch chassis are combined with top and bottom parts and assembled together with the help of 22 Philips head screws There are 7 screws lo
19. mode and can send receive auto negotiation pulses and the second of the two connected devices is powered up i e when LINK is established for a port or the LINK is re established on a port after being lost temporarily NOTE Some NIC cards only auto negotiate when the computer system that they are in is powered up These are exceptions to the negotiate at LINK enabled rule above but may be occasionally encountered When operating in 100Mb half duplex mode cable distances and hop counts may be limited within that collision domain The Path Delay Value PDV bit times must account for all devices and cable lengths within that domain For Black Box LE2425A Fast Ethernet switched ports operating at 100Mb half duplex the bit time delay is SOBT 95 08 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 4 5 Flow control IEEE 802 3x standard Black Box Managed LE2425A Switches incorporate a flow control mechanism for Full Duplex mode The purpose of flow control is to reduce the risk of data loss if a long burst of activity causes the switch to save frames until its buffer memory is full This is most likely to occur when data is moving from a 100Mb port to a 10 Mb port and the 10Mb port is unable to keep up It can also occur when multiple 100Mb ports are attempting to transmit to one 100Mb port and in other protracted heavy traffic situations Black Box Managed LE24254A Switches imp
20. package should contain 1 or moreLE2425A s PMs Installation instructions with illustrations Remove the LE2425A PM s from the shipping container Be sure to keep the shipping container should you need to ship any of the PMs separately at a later date In the event there are items missing or damaged contact your supplier If you need to return the unit use the original shipping container if possible Refer to Chapter 5 for specific return procedures PM Module Description An important feature of the Black Box Managed fiber switch is the use of Port Modules for flexible mixed media connectivity to RJ 45 and fiber media Since the Black Box LE2425A Switches have dual speed capability for copper ports the 6 or 8 port interfaces are designed to support all standard Ethernet media types at 10 or 100Mps speed EachLE2425A PM provides six or eight ports for connecting Ethernet segments with its individual connector type and media For a list of LE2425A s Port Module types refer to Section 1 2 Each LE2425A PM is individually described in the following sections IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 NOTE The port 1 on the RJ 45 ports on all the modules either all RJ 45 ports or used for COMBO module is set as other user ports by factory default 5 21 1 2429 4 10 100Mbps RJ 45 and 2 100Mb multi mode FX ST twist lock Combo Module The LE2429C is a combo 6 port module of RJ 45 s at
21. power connection terminals so that the power from an external source POWER SWITCH nos SUPPLY can only flow into the hub This allows m the Switch to operate only whenever DC A power is correctly applied to the two inputs It protects the Switch from NU eam incorrect DC input connections An incorrect polarity connection for example will neither affect the Switch its internal power supply nor will it blow the fuse in the internal power supply The manual power On Off Switch optional is used for powering the unit on and off when it is placed into or taken out of service B3 0 APPLICATIONS FOR DC POWERED SWITCHES Black Box Managed LE2425A Switches are easily installed in a variety of applications where 48VDC 24VDC and 125VDC power is used as the primary power source The 48VDC 24VDC and 125VDC power configuration provides an Ethernet networking solution utilizing a special power supply in a managed Fiber Switch The 48VDC solution is particularly useful in the telecommunication industry where it is common for facilities to operate on 48VDC power Such companies include IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 regular and wireless telephone service providers Internet Service Providers ISPs and other communication companies In addition many high availability equipment services such as broadcasters publishers newspaper operations brokerage firms and other facilities ofte
22. servicio calificado El aparato el ctrico debe ser situado de tal mannera que su posici n no interfiera su uso La colocaci n del aparato el ctrico sobre una cama sof alfombra o superficie similar puede bloquea la ventilaci n no se debe colocar en libreros o gabinetes que impidan el flujo de aire por los orificios de ventilaci n El equipo el ctrico deber ser situado fuera del alcance du fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor El aparato el ctrico deber ser connectado una fuente de poder s lo del tipo descrito en el instrucivo de operaci n o como se indique en el aparato Precauci n debe ser tomada de mal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 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 atenci n a los contactos y recept culos donde salen del aparato El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recommendaciones del fabricante En caso de existir una antena externa deber ser localizada lejos de las lineas de energia El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n
23. way to filter frames with a bad CRC the entire frame must be present in order for CRC to be calculated the result of indiscriminate cut through forwarding is greater traffic congestion especially at peak activity Since collisions and bad packets are more likely when traffic is heavy the result of store and forward operation is that more bandwidth is available for good packets when the traffic load is greatest When the Black Box LE2425A Switch detects that its free buffer queue space is low the Switch sends industry standard full duplex only PAUSE packets out to the devices sending packets to cause flow control This tells the sending devices to temporarily stop sending traffic which allows a traffic catch up to occur without dropping packets Then normal packet buffering and processing resumes This flow control sequence occurs in a small fraction of a second and is transparent to an observer Another feature implemented in LE2425A Managed fiber Switches is a collision based flow control mechanism when operating at half duplex only 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 receiving half duplex ports in order to stop incoming traffic 2 2 9 Managed Network Software MNS BB BB for Black Box LE2425A Black Box Managed LE2425A s come with licensed MNS BB software which allow to configure the Managed Switch and other
24. 00Mbps Address Table Capacity 4K node self learning with address aging Packet buffer size 240KB for 10 100 and 120KB for 1000Mb Latency 5 us packet time 100 to 100Mbps 15 us packet time 10 to 10 Mbps and 10 to 100Mbps Network Standards and Compliance hardware Ethernet V1 0 V2 0 IEEE 802 3 10BASE T IEEE 802 3u 100Base TX 100BASE FX IEEE 802 3z 1000BASE X Ethernet IEEE 802 3ab 1000BASAE X Ethernet IEEE 802 1p Priority protocol IEEE 802 3x Flow Control Maximum 10 Mbps Ethernet Segment Lengths Unshielded twisted pair 100 m 328 ft Shielded twisted pair 150m 492 ft IOBASE FL multi mode fiber optic 2 km 6 562 ft IOBASE FL single mode fiber optic 10 km 32 810 ft Maximum Standard Fast Ethernet Segment Lengths IOBASE T CAT 3 4 5 UTP 100 m 328 ft 100BASE TX CAT 5 UTP 100 m 328 ft Shielded twisted pair 150 m 492 ft 100BASE FX half duplex multi mode 412 m 1350 ft 100BASE FX full duplex multi mode 2 0 km 6 562 ft 100BASE FX half duplex single mode 412 m 1350 ft 100BASE FX full duplex single mode 20 0 km 66K ft 100BASE FX full duplex Long Reach 40 0 km 122K ft Maximum Standard Gigabit Ethernet Segment Lengths 1000BASE T CATSE or higher is recommended 100 m 328 ft 1000BASE SX full duplex multi mode 62 5um cable 220m 1000BASE SX full duplex multi mode 50um cable 550m 1000BASE LX full duplex single mode 62 5um cable 5Km Fiber Multi mode connecto
25. 1 70 high When properly installed the front mounted LED status indicators should be in plain view and easy to read Rack mount installation requires special 19 rack mounted brackets and screws included with each Black Box LE2425A fiber switch unit These brackets attach to the front sides of the Switch regular package i e not the Reverse version which is then typically fastened into a standard 19 RETMA rack as shown here The 23 brackets and the ETSI European metric approx 21 brackets also available optional for rack mounting of Black Box LE2425ASwitches These brackets are popular in the Telco industry where they are a standard for Central Office rack mounting purposes The 23 and the ETSI brackets are mainly used for larger equipment assemblies in rack mounting frames where the rack mount equipment is typically accessed in operation from both sides IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 The bracket mounting holes in the sides of the Black Box LE24254A fiber switch permits it to be mounted in various ways The same holes fit all three types 19 ETSI 23 of brackets The mounting for the 23 is illustrated in Figure 3 3 1 below The brackets may be attached flush with the front or attached in the center for a set back mounting which may reduce cabling torque GA Standard Flush Mount Bracket Mid Range Mount or 4 5 Set Back Bracket i Rear Mount Bracket
26. 100Mb LE2428C port 1 which it controls It enables the port s cable to be cascaded X to a 10 100Mb repeater or switching hub in the network The Up link Switch position is configured as position by default from the factory settings on all the RJ 45 ports either used for all copper module or combo module 4 4 Auto negotiation for Fast Ethernet copper ports The Managed LE2425A switch Fast Ethernet copper ports can be set for either fixed 100Mb speed or for 10 100 F H N way auto negotiation per the IEEE802 3u standard The selection is made via MNS BB software The factory default setting is for auto negotiation At 100Mb fixed speed the user may select half or full duplex mode by MNS BB Software for each RJ 45 port separately For detail information see Section 8 Optimizing Port usage of Black Box Managed fiber switch Software user guide MNS BB One frequently used application for the Managed LE2425A Switch copper ports is to connect one of them using a fiber media converter to another Switch in the network backbone or to some other remote 100Mb device In this case it is desirable to operate the fiber link at 100Mb speed and at either half or full duplex mode depending on the capabilities of the remote device Standard commercially available Fast Ethernet media converters mostly do not support auto negotiation properly and require that the switched port to which they are connected be at 100Mb fixed speed Attachment to 10 100 aut
27. 2426C s is also 4 Port 10 100Mbps and 2 100 Mb SC Fiber Port a Combo 6 Port module equipped with 4 10 100Mb RJ 45 ports along with 2 multi mode 100Mbps fiber optic transceivers all in one module This is similar to the LE2427C It has the same CO EINE 10 100 LEDs indicating port activity 5 e FULL HALF ACT Link LK and FDX HDX and 10 100 operation and the same face plate lettering s IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 While the functionality of these two modules is essentially the same the LE2426C is equipped with an SC type snap in connector instead of an ST type 5 2 3 LE2431C 4 10 100Mbps RJ 45 Ports and 2 100Mbps single mode FX SC type snap in connector The LE2431C is also a Combo module equipped with 4 dual 4 Port 10 100Mbps and 2 100 Mb SSC Fiber Port speed copper ports and 2 Single mode SC type connectors It ds provides an advantage through ee bod H i I F H combining copper and Fiber functions in one module of theLE2425A Switch supporting O SS 2 wan four Copper and two single mode 3 Q FULL HALF fiber network segments The LE2431C when installed in a Black Box LE2425A Switch operates on copper at the 100m distance The Fiber is single mode and cable lengths can be as much as 25 Km see Power Budget Section 4 5 Each port has an Activity ACT LED indicating packets
28. 425A Black Box Managed fiber switch base unit May be configured with a selection of 10 100 1000LE24254 fiber and copper port connector types 25 total ports max Wire speed filtering and forwarding across all ports 802 3x flow control 802 1p priority packet processing self learning 4K node address table large 240KB packet buffers for 10 100 and 120KB for 1000Mb Plug and play switching services Two sets of LEDs both rear and front provide duplicate status data for viewing from either side internal auto ranging AC power supply 19 rack mounting brackets For licensed managed networks software see MNS BB materials Black Box Managed fiber switch 48VDC Same as LE2425A except the power input is 48 VDC Black Box Managed fiber switch 24VDC Same as LE2425A except the power input is 24VDC Black Box Managed fiber switch 125VDC Same as LE2425A except the power input is 125 VDC Configuration Options Each Black Box Managed fiber switch base unit has four port module slots The first three A B C may be one of the modules below one slot D may only be a Gigabit module Select up to four port modules per base unit Black Box Managed fiber switch Port Modules LE2426C 2 2 100Mb Fiber module w four 100Mb 2km FX SC connectors LE2427C 2 2 10Mb Fiber module w four 10Mb 2km FL ST connectors LE2428C TP Module w eight 10 100Mbps auto negotiating RJ 45 ports LE2429C 2 module w four RJ 45 ports and two 2km mm FX ST s
29. 48VDC power supply factory installed add a suffix of 48VDC after the product s standard model Example LE2425A 48VDC Similarly to order the optional 24VDC or 125VDC industrial specific power supply factory installed add a suffix of 24VDC or 125VDC after the product s standard model Example LE2425A 24VDC LE2425A 125VDC B7 0 TROUBLESHOOTING Please refer to Section 6 0 for troubleshooting IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 APPENDIX C Internal DC Dual Source Power Option C1 0 SPECIFICATIONS FOR BLACK BOX LE2425A MANAGED SWITCH Power Supply Internal 48VDC Dual Source model Dual Src 48V DC Power Connector First Source A 2nd Source B GND Terminal for earth or ground wire connection to the hub chassis Input Two separate sources each at 36 70 VDC Power Supply Internal 24VDC Dual Source model Dual Src 24V DC Power Connector First Source A 2nd Source B GND Terminal for earth or ground wire connection to the hub chassis Input Two separate sources each at 20 36 VDC Power Supply Internal 125VDC Dual Source model Dual Src 24V DC Power Connector First Source A 2nd Source B B GND Terminal for earth or ground wire connection to the hub chassis Input Two separate sources each at 88 150 VDC With the exception of the dual DC in
30. C for Industrial applications Designed for use in network traffic centers the LE2425A Managed fiber switches are easy to install and use Addresses of attached nodes are automatically learned maintained and aged out adapting the switching services to network changes LEDs provide status information on each port The LE2425A fiber switch provides high IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 performance plug and play hardware operation 802 1p packet prioritization in hardware and industry standard managed networks software functionality all in convenient 1U rack mount packages 221 Black Box Managed fiber switch LE2425A The Black Box Managed fiber switch is a 19 rack mountable Ethernet Switch with three eight port slots A B and C and one GB only slot D for configuration flexibility Slots A B and C may be configured with any of a large selection of fiber and copper port types and combinations of types typically eight ports per module but sometimes 6 or 4 ports or even one GB port Slot D may be configured with a GB module that accepts GBICs The port types configurable using the 4 slots allows the LE2425A to efficiently serve a large variety of applications especially using fiber media The Black Box Managed fiber switch port modules are normally factory installed but may be changed or added in the field See Section 5 Figure 2 2 1a Black Box LE2425A s Rear view Figure 2 2 1a
31. D indicating packets being received and a Link LK LED indicating proper connectivity with the remote device when lit EN 08 BLACK Managed Fiber Switch Installation and User Guide 08 03 5 2 12 LE2435C Blank Cover The LE2435C is a blank face plate or cover plate that must be installed in any empty LE2425A s PM slot to maintain proper cooling air flow safety etc Two screws underneath the front panel hold the LE2435C in place NOTE For ordering the special model modules please call Black Box 724 746 5500 to get the special part no IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 6 0 6 1 6 2 TROUBLESHOOTING If problems should develop during installation or operation follow the suggestions below prior to calling Technical Support for help If you are unsure of any procedure described in this chapter or if the LE2425A is not operating as expected do not attempt to repair or alter the unit Contact Black Box for assistance Before Calling for Assistance If you have difficulty installing or operating the LE2425A Managed Modular Switches refer to Chapters 3 and 4 Make sure that the various other components of the network are working Check the cables and connectors to make sure that they have been properly connected and the cables wires have not been crimped or in some way impaired during installation Check that the AC power cord is plugged into a functionin
32. LE2436C 8 100Mb multi mode FX MTRJ Small Form factor LE2436C is a multi mode fiber optic 8 port module equipped with a small form factor MTRJ type small form factor 8 Port 100Mbps Multi Mode Fiber port connector It looks almost like an RJ 45 port but it is black in color The MTRJ s small size and ease of 3 5 7 act E LKE Dik E LK connection make it a good choice for 100Mbps fiber to the desktop Ethernet E E connectivity When installed in a Black Box LE2425A activity 2 Switch it supports fiber 3 UNK optic cable distances up the IEEE standard 100Mbps distance limits i e typically 2km at full duplex and 412m at half duplex The functionality of this 100 multi mode 8 Port module is essentially the same as the ST and SC types It has the same LEDs per port indicating port activity ACT Link LK and FDX or HDX operation 5 2 5a special model 4 100Mb multi mode MTRJ Small Form Factor and 4 10Mb Multi mode ST Fiber port The special model is a combo module with two different kinds of fiber flavor with two different speeds The top four ports of MTRJ Small form factor fiber support at 100Mb full duplex whereas the bottom two ports multi mode ST Fiber support 10Mb half duplex This combo module provides more flexibility to the user to connect their legacy 10Mb fiber as well as 100Mb to the LE2425A Switch When install
33. N to indicate full duplex operation and OFF to indicate half duplex mode A twisted pair cable must be connected into an RJ 45 port and the Link LK indicator for that port must be ON indicating there is a powered up device at the other end of the cable in order for a LK LED to provide valid indications of operating conditions on that port Using theLE2425A s MNS BB software the user may disable auto negotiation and fix the desired operation of each RJ 45 port MNS BB Software set up may select 10Mb or 100Mb speed and full or half duplex mode per port as per user requirement See Black Box Managed fiber switch MNS BB Software Manual for details info 2 2 4 Six Port 4 2 Combo Modules 4 10 100 RJ 45 and 2 100Mb fiber The combo six port modules LE2429C are combinations of copper and fiber media available as four 10 100 switched RJ 45 copper ports and two 100Mb switched 4 RJ 45 2 100 Mb SC IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 multi mode fiber ST SC or single mode SC or Long Reach SC ports For ports numbering ports 1 3 5 7 are copper ports 2 and 6 are fiber ports 4 and 8 are not present The four RJ 45 ports operate just like the 8 port copper module and the two fiber ports operate at 100Mbps full duplex default User mode control per port through the MNS BB software is also the same On LE2425A s 4 2 Combo modules there are four LED s for each RJ 45 port which indi
34. aged Fiber Switch Installation and User Guide 08 03 2 2 6 Gigabit 1000Mbps port modules The Black Box Managed fiber switch can be configured for Gigabit speed While up to all four slots may be Gigabit normally it is configured in slot D the GB only slot and Slot C if a 2 GB port is desired The Gigabit port option comes as LE2432C for slot D the narrow slot and LE2433C for slots C or B or A TheLE2425A Modules provide a GBIC opening for insertion of industry standard GBICs to provide GB media flexibility GBIC models are available for both multi mode and single mode fiber connections and for GB copper as well with new models appearing often The 1000Mb Gigabit fiber port modules on the Black Box Managed fiber switch are normally set factory default to operate in full duplex mode for best fiber distance and performance The 1000Mbps SC fiber optic module on the Gigabit SX and Gigabit LX transceivers are compatible with the IEEE 802 3z Gigabit standards There are two LEDs mounted on each Gigabit port module The Gigabit fiber port is fixed at 1000Mbps speed full duplex mode at all times and has LEDs that indicate LK Link status and ACT receiving activity on that port when lit 2 2 7 Packet Prioritization 802 1p QOS Quality of Service means providing consistent predictable data delivery to users from datagram paths that go all across a network As a LAN device the Black Box Managed fiber switch can do its part to preven
35. andle a VLAN application and provide a security and performance in an Ethernet network center A secure VLAN enabled network is simply an administratively configured broadcast domain The network administrator determines which ports and nodes are in which broadcast domains by setting membership profiles for each of them The Black Box Managed fiber switch s VLAN capability can be developed in several types of Virtual LANs such as Port based VLANs MAC based VLANs Tag based VLANs In an office environment where departments such as Finance Engineering R amp D and Marketing need to keep a secure LAN theLE2425A s VLAN feature will prevent traffic cross over among domains and thus from keep sensitive data and information controlled The Managed Black Box Managed fiber switch equipped with VLANS capability is ideal for any application where a secure VLAN to multiple departments is needed The modularity of theLE2425A Managed Fiber Switch makes it an attractive choice for use in applications with LAN connections to an organization s multiple site offices The different offices can be easily connected together with the Fiber ports supported by the Black Box Managed fiber Switch A main NT server in a secure area IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 protected from earthquake or fire hazards can be connected to the full duplex Gigabit Fiber port Full duplex future proof fiber media can easily connect long dista
36. at the bottom of the daughter board with the other female connector placed on the Granddaughter and main board As shown below in Fig 3 5 2e Fig 3 5 2e LE2425A s PM daughter board aligned with the bottom female connector for the installation Step 5 Once the latching connectors are aligned properly and the mounting holes are aligned with stand offs then press slowly and firmly with two fingers as shown below in Fig 3 5 2f on the top of the latching connectors until the connectors latched up securely Figure 3 5 2f Securely latching up PM Cards into a Black Box LE2425A switch BLACK Managed Fiber Switch Installation and User Guide 08 03 NOTE All PM slots need not be filled in order for the Black Box LE2425A switch unit to be operational When leaving PM slots empty always use a face plate LE2435C to cover the slot opening in the front panel This will maintain proper cooling air flow safety and operation as required by FCC CE and other regulations Step 6 Now screw down the daughter board with 6 440 screws so that it holds the daughter board securely The figure below shows the top view of PM card after successfully installing the PM cards inside the Black Box Managed fiber switch Fig 3 5 20 View PM Module installed inside a LE2425A Step 7 Once the installation of granddaughter and daughter modules is done the front panel screen plates need to be placed on the front o
37. cate status the same as described for the LE2428C in Section 2 2 3 above The fiber port s LEDs indicate status the same way as described for the SFF fiber modules in Section 2 2 2 above Color coding on the panel of the module shows which LEDs belong to which port The LE2425A s Combo six port modules are also available with 4 MTRJ 100Mb mm SFF fiber and 2 10Mb fiber mm ST ports and with 4 RJ45 4 RJ 45 2 10 Mb ST 10 100 copper and 2 10Mb fiber mm ST ports The operation of the SFF fiber and the RJ 45 half of the module is as described for those port types above For detailed information about 10Mb mm ST fiber half of the module please check section 2 2 5 2 2 5 Four Port 10 Mb mm Fiber ST Modules The 4 port 10Mb ST fiber modules operate the same as the 8 100Mb ST fiber modules except for the 10Mb speed For ports numbering ports 1 2 5 6 are present ports 3 4 7 8 are not present The default setup on the 10Mb fiber module is half duplex which allows the Black Box Managed fiber switch to connect to any 10Mb hub or media converter or almost any other device with a 10Mb fiber Ethernet port User mode control per port through the MNS BB software is the same as the other LE2425A modules The fiber ports support fiber cabling distances according to the 10BASE FL standard i e 2km distance for multi mode fiber Single mode for up to 10Km distance may be available as a special order configuration IBLACK BOX Man
38. cated on the front bottom and rear top of the unit and four screws each on the sides Remove these screws Once these are removed the top cover is easily lifted off the BLACK Managed Fiber Switch Installation and User Guide 08 03 chassis base When the chassis top cover has been removed the interior of the unit is exposed Figure 3 5 1a Removing Chassis Cover Caution Be careful not to disturb the power supply Looking down into the LE2425A switch unit notice that there are individual PM installation spaces and female latch white connectors provided on the main board along with four stand off s for each PM card position See Figure 3 5 1b pure HU i Figure 3 5 1b LE2425A Managed fiber switch Top view without chassis cover Step 3 Remove front panel face plate retaining screws There are four PM slots A B C and D located on the front of the chassis cover Looking into the vertical placed Chassis cover of the unit there are three brackets with retaining screws 256 flat head which hold each PM Face plate card slot securely These six screws shown in the picture below are used to secure a PM face plate in position but unscrew only four of the screws as shown in Fig below These screws are also used to secure the individual PM cards screen plate which can be subjected to significant forces from the attached cables See Figure 3 5 1c T 1 Figure 3 5 1c Top View PM retainin
39. configurable Black Box Managed fiber switch provides an extra boost to the network requirements by providing copper fiber media along with the higher bandwidth support of 10 100 and 1000Mb The user can utilize the SNMP feature equipped with VLAN RMON SNTP and other standard managed LAN features to provide a secure and stable network TheLE2425A Managed Fiber Switch with mixed media flexibility allows the users more than one configuration alternative The user has an advantage by fulfilling the present requirements as well as benefiting from the multiple choices of modules to IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 support future expansion as the network evolves The Gigabit port option boosts the bandwidth for high speed to support the peak traffic and minimize congestion 1000Mb Data Mining Servers i 100Mbps Full duplex Fiber for 100Mb Servers another Bldg and Workstations O 100Mb Servers i g gt and Workstations ES 100Mb Servers and Workstations 100Mb Servers and Workstations Internet IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 3 0 Installation This section describes installation of the Black Box Managed Fiber Switches as well as connection of the various Ethernet media types Safety Precautions Before installing the equipment it is necessary to take the following precautions
40. d LE2425A switch provides switched connectivity at Ethernet wire speed among all of its ports The Black Box Managed LE2425A switch supports 10 100Mbs for copper media and 10 or 100Mb separate traffic domains for fiber ports to maximize bandwidth utilization and network performance ports can communicate to all other ports in a Black Box Managed fiber switch but local traffic on a port will not consume any of the bandwidth on any other port Black Box Managed LE24254 switch units are plug and play devices There is no software configuring necessary to be done for basic operation at installation or for maintenance The only hardware configuration settings are user options for an UP LINK Switch resides inside the unit on the LE2428C module Optional Half Full duplex mode and 10 or 100Mbps selection for the switched ports must be configured through MNS BB software per unit as per the requirement The internal functions of both are described below 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 are on the same port segment will be filtered constraining them to that one port and relieving the rest of the network from having to process 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
41. dard distances as per mentioned on 5 2 8 and the LEDs also acts similarly as mentioned above 5 2 9 LE2428C Twisted Pair 10 100Mb 8 Port The LE2428C module supports Ethernet twisted pair segments of any standard length It is equipped with an eight port RJ 45 connector and offers 10 100 full half duplex auto negotiating capability on each port The RJ 45 connector is shielded to minimize emissions and will allow both unshielded twisted pair UTP and shielded twisted pair STP cable 6KP8 RJ45 connections The LE2428C module is 8 Port 10 100Mb Copper ports equipped with a Media Dependent Interface Crossover MDI X switch to allow for one cascaded connection This feature eliminates the need for a special twisted pair crossover cable when connecting to a hub or another switch um IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 The switch is configured as position by default settings from the factory the left most RJ 45 port is used for segments going to workstations and other user node device connections as other ports of the module For cascaded and up link connections 1 a connection to another hub or switch typically the uplink switch should be in the OUT X position Each port has an Activity ACT LED indicating packets being received a Link LK LED that indicates proper connectivity with the remote device when lit a FDX HDX LED to indicate full duplex mode when lit or
42. e user may elect to Ground either or terminal to suit the customer s use Before connecting hot lines to the Terminal Block of 48VDC 24VDC or 125VDC always use a digital voltmeter to measure the output voltage of the power supply and determine the lead which is more ve potential The more ve voltage lead from 48V or 48V supply must be connected to the post labeled An ON OFF manual switch is optional for DC power This can be used to cut off power connections and as a RESET for the LE2425A Managed Switch B4 1 UL Requirements for DC powered units 1 Minimum 18AWG cable for connection to a Centralized DC power source IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 2 Minimum 14AWG cable for connection to a earthing wiring 3 Use only with Listed 10 A circuit breaker provided in building installation 4 Complies with FDA radiation performance standards 21 CFR subchapter J or equivalent 5 Fastening torque of the lugs on the terminal block 9 inch pound max 6 Centralized DC Power Source cable securement use at least four cable ties to secure the cable to the rac k at least 4 inches apart with the first one located within 6 inches of the terminal block B5 0 OPERATION Operation of Black Box LE2425A Switches with the optional 48VDC 24VDC and 125VDC power supply is identical to that of the standard AC powered models B6 0 ORDERING INFORMATION To order the optional
43. ed Black Box Managed fiber switch site The rugged metal case of the Black Box Managed fiber switch will normally protect it from accidental damage in a lab or workplace setting Maintain an open view of the front to visually monitor the status LEDs Keep an open area around the unit so that cooling can occur from the small fan on the left side while the unit is in operation See figure below Figure 3 1 Location of the Black Box LE2425A fiber switch s cooling fans IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 3 2 Connecting Ethernet Media The Black Box LE2425A fiber Switches are specifically designed to support all standard Ethernet media types within a single Switch unit This is accomplished by using a family of different port Modules which can be individually selected and configured per port See Section 2 4 for a description of the PMs The various media types supported along with the corresponding IEEE 802 3 and 802 3u standards and connector types are as follows IEEE Standard Media Type Max Distance Port Module Fiber 1000BASE FX mm Fiber 220m ft LE2434C sgl m Fiber 5Km LE24XX 100BASE FX mm Fiber 2 0km 6 562 ft LE2429C LE2430C sgl m Fiber 18 0km 95K ft LE2431C LE24XX small form factor mm Fiber 2 0km 6 562 ft LE2436C LE2437C small form factor sgl m Fiber 15 km LE24XXX Copper 10BASE T and 100BASE TX twisted pair 100m 328 ft LE2428C 1 mm multi mode 2 sgl m single mode 3 2 1
44. ed in a Black Box LE2425A Switch the 100Mb MTRJ connector supports fiber optic cable distances up to the IEEE standard 100Mbps distance limits i e typically 2km at full duplex and 412m at half duplex The 10Mb Multi mode ST Fiber connector supports the standard fiber optic distance limit of 2Km at Full and Half duplex both Uy IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 The functionality of this 100 5 multi mode 4 port module is essentially the same as the ST and SC types It has the same LEDs per port indicating port activity ACT Link LK and FDX or HDX operation 5 2 6 special model 4 10 100Mbps RJ 45 and 4 100Mb m mode FX MTRJ Small Form Factor The special model Module is a combo module with copper and fiber 4 Port 10 100Mbps amp 4 port Y 100Mbps Multi Mode o a mem mU E Small Form Factor MTRJ type ports The small size of MTRJ connectors give an advantage of placing more ports on one module The XXXXX is equipped with 4 10 100 RJ 45 ports and 4 MTRJ fiber ports When installed in Black Box Managed CO LINK 10 100 fiber Switch it supports the standard ACTIVITY Q FULL HALF distances as mentioned on 5 2 3 and the LEDs also act similarly 5 27 LE2437C 8 ports 100Mbps single mode LC connector Small Form Factor LE2437C is a eight port single mode fiber LC connector small form factor used primarily in 100Mbps fiber to the
45. ew 6 retaining screws shown by arrows Step 3 Remove PM Card Carefully and gently pull out the daughter board from the latching connectors using both hands gripping the board near the latch up connectors as shown in Fig 3 5 3b If the now empty slot is to remain unused be sure to install a PM BLNK face plate cover Figure 3 5 3b Removing a PM Card If another PM card is replacing the one that has been removed follow the steps as described for installing a PM card discussed in Section 3 5 1 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 3 6 Connecting the Console Terminal to Black Box Managed fiber switch Management Use a DB 9 null modem cable to connect the LE2425A s Console Port the RS 232 port on theLE2425A Switch to the your PC so that your PC becomes the LE2425A s Console Terminal Note The DB 9 cable does not include with theLE2425A unit package Rear View of Black Box Managed fiber switch Typical Console Port is on the rear of LE2425A Models Note For detail description of Managed Network Software MNS BB and Black Box Managed fiber Switch configuration for Network Management please refer to Black Box Managed fiber switch Software IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 4 0 OPERATION This chapter describes the functions and operation of the Black Box Managed fiber Switch 4 1 Switching Functionality A Black Box Manage
46. f the chassis cover to complete the installation process for that port module The front panel screen plate comes along with the package of port module separately along with 3 brackets and 6 256 flat head screws The brackets and screws have been installed inside of the top cover as shown in Fig 3 5 2h Fig 3 5 2h Inside view of chassis cover from the rear showing the front panel Screen plates installed inside the chassis cover using brackets and screws Step 8 Once all PM cards have been installed including faceplates for empty slots the chassis cover should be replaced Make sure the chassis cover is aligned properly before securing the enclosure IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 3 5 3 Removing PM Cards To properly remove a PM card from the LE2425A Managed Fiber Switch follow the 3 steps below Step 1 Remove chassis cover See procedures in Section 3 5 1 above Caution Be sure the power cord is unplugged Step 2 Remove retaining screws placed on top for the PM and Face Plate On the top of the daughter module there are six retaining screws for each PM card These screws are used to secure a PM card in position see Figure 3 5 3a Remove the three standoffs holding the Granddaughter board with the chassis The screen faceplate screws out from the inside front of the chassis cover by loosening the 4 screws and bracket while holding 1t down firmly Figure 3 5 3a Top Vi
47. g electrical outlet Make sure that the AC power cord is properly plugged into the Modular Switches Use the PWR LED to verify that the unit is receiving proper power If the problem is isolated to a network device other than the LE2425A Managed Fiber Switch replace the problem device with a known good device Verify whether or not the problem is corrected If it 15 not go to step 5 If the problem is corrected the Managed LE2425A Switches and its associated cables will function properly If the problem still exists contact Black Box When Calling for Assistance If you determine that your LE2425A Managed Fiber Switch is malfunctioning do not attempt to alter or repair the unit It contains no user serviceable parts Contact Black Box at 724 746 5500 Before you do make a record of the history of the problem Black Box will be able to provide more efficient and accurate assistance if you have a complete description including e the nature and duration of the problem e when the problem occurs e components involved in the problem e any particular application that when used appears to create the problem or make it worse IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 6 3 Shipping and Packaging Information If you need to transport or ship your LE2425A Managed Switch e Package it carefully We recommend that you use the original container e Ifyou shipping the LE2425A Managed Sw
48. g screws hold Face Plate IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 3 5 2 Installing PM Cards in the LE2425A Managed fiber switch Up to four front mounted PM cards may be installed in one Black Box LE2425A Switch unit Follow these steps to install a PM Step 1 Remove top chassis cover See procedure in Section 3 5 1 above Step 2 Placed Granddaughter board as shown in fig 3 5 2a and 3 5 2b on the chassis built in stand off female provided at the front of theLE2425A Main Board and screw down tightly with the three 7 16 stand off male on the top of the Granddaughter board The 7 16 stand off has been used to place the daughter board on the top of the granddaughter board and latch it securely LEE PESO TH a Fig 3 5 2a Granddaughter Board shown separately Fig 3 5 2b Granddaughter Board placed in slot A and secured with three 7 16 stand off s Step 3 The figure here illustrates the basic layout of an individual PM card Each PM card fits into the space provided on the main board Fig 3 5 2c Daughter Board top view of version for 4 copper 10 100 ports IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 Fig 3 5 2d Daughter Board shown upside down with two male latch connectors Step 4 Hold the daughter board with both hands at the end and align the two cream color latching connectors male placed
49. ged Fiber Switch Installation and User Guide 08 03 C4 0 FEATURES AND BENEFITS OF THE DUAL SOURCE DESIGN a The Switch unit can receive power from either input A or The hub will normally draw its power from the DC source with the highest voltage at a given time b The Switch unit will not allow power to flow from a higher voltage input to a lower voltage input i e the two DC power sources are not mixed together by the hub When one correct DC input is present the Switch will receive power if the other DC input is absent or even if it is connected with reverse polarity or shorted or grounded d Reverse polarity connections if they should accidentally occur on either input will not damage the Switch or power supply internally nor will it blow the fuse in the internal power supply because of the blocking action of the diodes This is true even if one input connection is reversed while the Switch is operating from the other source e TheSwitch will not receive power and will not work when both inputs are simultaneously absent or are both incorrectly connected 5 0 INSTALLATION This section describes the proper connection of the 48 VDC 24VDC and 125VDC dual source leads to the 48 24VDC 7 125VDC power terminal block on the LE2425A s Switch shown in Figure The 48VDC terminal block on the LE2425A Managed Switch as shown in Fig C5 0 is located on the right rear of the unit and is equipped with five 5
50. half duplex when off and a 10 100 LED indicating 100Mb when lit or 10 Mbps when off Important Note For the LE2428C Crossover Switch Inside is set for by default from the factory for the Port 1 and act similar as other user port The RJ 45 pins normally TP crossover switch are per the standard for hubs to users twisted pair wiring 1 2 receive 3 transmit 6 transmit other pins not used When the TP crossover push button is UP the pins of the RJ 45 port are per the standard for up links using twisted pair wiring i e the transmit and the receive pairs are exchanged 1 transmit 2 transmit 3 receive 6 receive other pins not used 5 2 10 LE2434C Gigabit fiber 1000Mb Transceiver multi mode SC Connector The LE2434C is a multi mode Gigabit fiber Transceiver equipped with SC type connectors that can be easily snapped in and out The Gigabit fiber ports are most popular as server to switch and switch to switch applications It supports cable distances up to the IEEE 802 3z standard 1000Mbps distance limits 1 220m minimum at full duplex The GBIC transceiver is fastened using snap in clips Insert the transceiver take care to insert it the right way up arrows on top until it clicks in place When removing the transceiver press the clips on either side of the transceiver at the same time and pull the transceiver out Each port has an Activity ACT LE
51. ions In either case the maximum distance for unshielded twisted pair cabling is 100 meters 328 ft Media IEEE Standard Connector Twisted Pair CAT 5E 1000BASE T RJ 45 NOTE It is recommended that high quality CAT 5E cables which work for both 100 Mb and 1000Mb be used whenever possible in order to provide flexibility in a mixed speed network The following procedure describes how to connect a 1000BASE T twisted pair segment to the RJ 45 port The procedure is the same for both unshielded and shielded twisted pair cables 1 1000 connections require that all four pairs or wires be connected Insert either end of the cable with an RJ 45 plug into the RJ 45 connector of the port Note that even though the connector is shielded either unshielded or shielded cables and wiring may be used 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 3 3 Table Top or Shelf Mounting The Black Box Managed fiber Switches can be easily mounted on a table top or any suitable horizontal surface and has four rubber feet to provide stability without scratching finished surfaces 3 3 1 Rack mounting for 19 RETMA racks Black Box Managed LE2425A switches Installation of a Black Box Managed Fiber Switch in a 19 rack is a simple procedure The units are 1U
52. itch for repair make sure you include everything that was in the original package Before you ship contact Black Box to get a Return Materials Authorization RMA number Ship the package to Black Box Corporation 1000 Park Drive Lawrence PA 15055 Phone 724 746 5500 Fax 724 746 0746 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 APPENDIX B Internal DC Power Supply Options B1 0 SPECIFICATIONS FOR LE2425A MANAGED FIBER SWITCHES DC POWER Power Supply Internal 48VDC Option DC Power Connector 3 terminals GND Input Voltage 36 70 VDC Power Consumption Same as for AC models see Section 1 1 Power Supply Internal 24 VDC Option Industrial Applications DC Power Connector 3 terminals GND Input Voltage 20 36 VDC Power Consumption Same as for AC models see Section 1 1 Power Supply Internal 125 VDC Option Industrial Applications DC Power Connector 3 terminals GND Input Voltage 88 150 VDC Power Consumption Same as for AC models see Section 1 1 With the exception of the power supply all specifications and functions of LE2425A Switch 48VDC 24VDC and 125VDC models are identical to those listed in the main manual B2 0 48VDC 24VDC and 125VDC POWER THEORY OF OPERATION The 48VDC 24VDC and 125VDC power options are designed using diodes inside on each DC power input line behind the two external
53. its 1 typically 2km at full duplex and half duplex Each port has an Activity ACT LED indicating packets being received a Link LK LED that indicates proper connectivity with the remote device when lit and FDX HDX LED to indicate full duplex mode when lit or half duplex when off The 10 100 LED indicates the speed if the LED is ON 100Mbps if it is OFF 10Mbps 36 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 5 2 1b LE2427C 4 10Mb multi mode FX ST twist lock Module LE2427C is a 10Mb multi mode fiber module with 4 ST Fiber 4 Port 10Mb ST Fiber Port ports All four fiber ports are ST connectors and configured as 10Mb Half duplex by default The 10Mb ST fiber ports allow the user to connect their legacy 10Mb network to the LE2425A switch They also provide a convenient way for O LINK O ACTIVITY the half duplex hub to connect to the switch O FULL HALF through 10Mb fiber ports It supports distances according to the 10Base FL standard i e 2Km distance for multi mode fiber Single mode for 10Km distance may be available as a special order Each port has an Activity ACT LED indicating packets being received a Link LK LED indicating proper connectivity with the remote device when lit and FDX HDX LED indicating full duplex mode when lit or half duplex if off 5 2 2 LE2426C 4 10 100Mbps RJ 45 and 2 100Mb multi mode FX SC snap in Fiber connector The LE
54. lement the 802 3x flow control non blocking on Full Duplex ports which provides for a PAUSE packet to be transmitted to the sender when the packet buffer is nearly filled and there is danger of lost packets The transmitting device is commanded to stop transmitting into theLE2425A Switch port for sufficient time to let the Switch reduce the buffer space used When the available free buffer queue increases the Switch will send a RESUME packet to tell the transmitter to start sending the packets Of course the transmitting device must also support the 802 3x flow control standard in order to communicate properly during normal operation Note When in Half Duplex mode the LE2425A Switch implements back pressure algorithm on 10 100 Mb ports for flow control That is the switch prevents frames from entering the device by forcing a collision indication on the half duplex ports that are receiving This temporary collision delay allows the available buffer space to improve as the switch catches up with the traffic flow 4 6 Power Budget Calculations for LE2425A Switch PM s with Fiber Media Receiver Sensitivity and Transmitter Power are the parameters necessary to compute the power budget To calculate the power budget of different fiber media installations using LE2425A s products the following equations should be used OPB Optical Power Budget P min Pr min where Transmitter Output Power and Pp Receiver Sen
55. llow the user to select the desired mix of port types amp speeds The port modules are normally factory installed and tested but may be changed in the field Rack mounting may be standard or reverse 19 inch or ETSI or 23 Telco The standard rack mounting provides Ethernet ports and status LEDs in front service connections power input and management console in the rear Reverse rack mounting provides status LEDs in front and all cabling connections in the rear Standard 19 rack mount brackets are included with ETSI and 23 Telco optional Standard AC power input 48VDC or 24VDC or 125VDC input is optional Standard AC power input is IEC plug auto ranging for worldwide use For special applications models with 48VDC or 24VDC or 125VDC are available Dual Source DC input can also be selected and configured on the DC power input models Heavy duty design for Industrial Ethernet and extended temperature operation Fiber ports take more power than copper ports but the LE2425A design provides for this with heavy duty components The ambient temperature can be up to 55 C NEBS and ETSI tested and certified TheLE2425A has been tested and certified for NEBS and ETSI Request test reports MNS BB licensed Network Management Software included S Ring optional Release 2 3 summer 03 includes SNMP Switch Management with secure access control RMON CLI Port Security Port Mirroring Port Settings Control Telnet TFTP FTP
56. ls
57. n use a battery backup system to maintain operations in the event of a power failure It is also frequently used for computer system backup management and operations monitoring equipment The 24VDC and 125VDC solution are particularly useful in the Industrial environment where it is common facilities to operate on 24VDC or 125VDC power The 125VDC solution is mainly used in power utilities such as electrical substations electrical generating plants etc The 24VDC applications are mainly in the Industrial environment such as factory floor HVAC equipment military equipment etc B4 0 INSTALLATION This section describes the installation of the 48 VDC 24VDC and 125VDC power source leads to the 48 VDC 24VDC and 125VDC power terminal block on the LE2425A fiber switches see figure at right In this picture the 48VDC terminal block on the LE2425A Managed fiber switch is located on the rear of the unit and is equipped with three 3 screw down lead posts It is similar for 24VDC and Figure B4 0 48VDC Terminal Block on LE2425A switch 48VDC 125VDC options on Black Box Managed LE2425A switch The leads are identified as negative positive and chassis ground GND The actual connection procedure is very straightforward Simply connect the leads to the LE2425A s unit beginning with ground Ensure that each lead is securely tightened Note The GND should be hooked up first TheLE2425A unit has a floating ground so th
58. nce subnets and provide a stable secure network to all applications The SNMP management capability of the Black Box Managed fiber Switch helps create a database of all the network subnets to easily manage the network El SNMP Monitor FIBER Connection to other BLDG z Main NT 7 SERVER 1 d D A Internet VE Y gt lt m 1 bie an a d Router B un B ye h VLAN for R amp D VLANfoTMNANACE _ 27 2 r gt VLAN Tor ENGG i ETN BIBER Connection to du 1 other BLDG 1 1 B VLAN for NG M RKETING Example 2 In another application a managed switch is needed to provide an Ethernet backbone for a diversified network with multiple subnets The back bone consists of high speed LAN segments supported by 100Mbps full duplex future proof fiber media to provide secure long distance LAN connections The entire network is sharing a higher bandwidth Gigabit enabled data mining server for the vital database located in a separate secured building The copper ports are required for multiple subnets inside the building The entire spread network will be manageable to provide easy detectable uninterrupted support through a viewable SNMP monitor The Black Box Managed fiber switch Managed Fiber Switch equipped with the mix of copper and fiber ports provides an economical and seamless solution to the requirements The user
59. nd fax numbers Black Box Corporation 1000 Park Drive Pittsburgh PA 15055 Phone 724 746 5500 Fax 724 746 0746 E mail info blackbox co P N 84 01051 Rev A 08 03 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 FCC STATEMENT 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 J 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 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 Communicatio
60. needed Traffic needed for maintaining the operation of the network such as occasional multi cast packets are forwarded to all ports The Black Box Managed LE2425A Switches operate in the store and forward switching mode which eliminates bad packets and enables peak performance to be achieved when there is heavy traffic on the network Address Learning All Black Box Managed LE2425A switch units have address table capacities of 4K node addresses suitable for use in larger networks They are self learning so as nodes are added removed or moved from one segment to another theLE2425A Switch automatically keeps up with node locations An address aging algorithm causes least used addresses to fall out in favor of frequently used addresses To reset the address buffer cycle power down and up 4 2 Status LEDs For all Black Box Managed LE2425A switch models IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 PWR Power LED ON when external power is applied to the unit LK Steady ON Link status for 10 Mbps and 100Mbps operation ACT ON with port activity for 10 Mbps and 100Mbps operation F H Full Half duplex LED ON when the port is running full duplex OFF for half duplex 100 10 Speed LED ON when the speed is 100Mbps OFF when the speed is 10 Mbps 4 3 Up link Manual Switches set as for RJ 45 port only The module has a manual Up link switch located on the inside of the board next to the 10
61. ns Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de classe A prescrites dans le R glement sur le brouillage radio lectrique publ par le minist re des Communications du Canada IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 10 11 12 13 14 15 16 17 18 he A NORMAS OFICIALES MEXICANAS NOM ELECTRICAL SAFETY STATEMENT INSTRUCCIONES DE SEGURIDAD Todas las instrucciones de seguridad y operaci n deber n ser le das antes de que el aparato el ctrico sea operado Las instrucciones de seguridad y operaci n deberan ser guardadas para referencia futura Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas Todas las instrucciones de operaci n y uso deben ser seguidas El aparato el ctrico no deber ser usado cerca del agua por ejemplo cerca de la tina de lavabo s tano mojado o cerca de una alberca etc El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean reconnendados por el fabricante El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recommendado por el fabricante Servicio El usuario no debe intentar dar sercicio al equipo el ctrico m s all a lo descrito en las instrucciones de operati n Todo otro servicio deber ser referido a personal de
62. o negotiation ports typically will not work properly TheLE2425A Switch s RJ 45 ports handle this situation by configuring the ports as per desire through MNS BB software port settings and can check the port status of each port after the change When Black Box Managed LE2425A switch RJ 45 copper ports are set for auto negotiation and are connected to another auto negotiating device there are 4 different speed and F H modes possible depending on what the other device supports IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 These are 1 100Mb full duplex 2 100Mb half duplex 3 10 Mb full duplex and 4 10 Mb half duplex The auto negotiation logic will attempt to operate in descending order and will normally arrive at the highest order mode that both devices can support at that time Since auto negotiation is potentially an externally controlled process the original highest order mode result can change at any time depending on network changes that may occur If the device at the other end is not an auto negotiating device theLE2425A s RJ 45 ports will try to detect its idle signal to determine 10 or 100 speed and will default to half duplex at that speed per the IEEE standard General information Auto negotiation per port for 802 3u compliant switches occurs when the devices at both ends of the cable are capable of operation at either 10 Mb or 100Mb speed and or in full or half duplex
63. put power connections and the power supply all specifications and configuration options for the LE2425A switch 48VDC 24VDC and 125VDC models with this Dual Source option are identical to those listed in the LE2425A Managed Fiber Switches Installation and User Guide including Appendix B Internal DC Power Supply Option C2 0 BLACK BOX MANAGED FIBER SWITCH with 48VDC 24VDC and 125VDC Dual Source option TheLE2425A Switch models with the internal 48VDC 24VDC and 125VDC Dual Source power supply are designed for installations where a battery plant 1s the power source and where two separate power sources are utilized in order to increase operational uptime and to simplify maintenance The functionality of the Black Box Managed LE2425A Managed switch 48VDC 24VDC and 125VDC Dual Source Option units is identical to the standard AC powered models Refer to the main sections of this Installation and User Guide for a detailed description of the LE2425A Switches C3 0 DUAL SOURCE OPTION THEORY OF OPERATION The Dual Source DC power option is designed using diodes inside of the chassis on each DC power input line A diode is placed in each of the four input lines behind the four external power connection terminals B CHASSIS so that power from an external source GND can only flow into the unit This allows the unit to operate whenever DC power is correctly applied to either or both of the two inputs Fl IBLACK BOX Mana
64. r CAT 3 4 5 45 Twisted Pair 5 100BASE TX RJ 45 NOTE tis recommended that high quality CAT 5 cables which work for both 10 Mb and 100Mb be used whenever possible in order to provide flexibility in a mixed speed network since dual speed ports are auto sensing for either 10 and 100 5 The following procedure describes how to connect a 100BASE TX twisted pair segment to the RJ 45 port The procedure is the same for both unshielded and shielded twisted pair cables 1 Using standard twisted pair media insert either end of the cable with an RJ 45 plug into the RJ 45 connector of the port Note that even though the connector is shielded either unshielded or shielded cables and wiring may be used 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 3 2 5 Connecting Twisted Pair CATSE or better Unshielded or Shielded The RJ 45 Gigabit ports of the Black Box Managed fiber switch can be connected to the media types 1000BASE T or CAT 5E or better 100 ohm UTP or 20 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 shielded twisted pair STP balanced cable The CAT 5E or better 100 ohm UTP or shielded twisted pair STP balanced cable is recommended to use when making 1000BASE TX connect
65. r types supported Fiber Port ST type twist lock Fiber multi mode 10Mb 10BASE FL Fiber Port MTRJ type plug in SFF Fiber multi model00BASE FX Fiber Port SC type snap in Fiber optic multi mode 100BASE FX Fiber Port ST type twist lock Fiber optic m mode 100BASE FX Fiber Port 1000 5 GBIC modules IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 Fiber Single mode connector types Fiber Port SC type Fiber optic single mode 100BASE FX Fiber Port LC type Fiber SFF single mode 100BASE FX Fiber Port 1000BASE FX GBIC modules LEDs Per Port LK Steady ON when media link is operational ACT ON with receiver port activity FDX HDX ON Full Duplex Mode OFF Half Duplex Mode 100 10 ON 100Mbps speed OFF 10 Mbps Operating Environment Ambient Temperature 25 to 130 5 to 55 C Storage Temperature 40 to 185 F 40 to 85 C Ambient Relative Humidity 5 to 95 non condensing Altitude 200 to 13 000 ft 60 to 4000m Conformal Coating option Request quote Packaging Enclosure Rugged High strength metal Suitable for stand alone or rack mounting Dimensions 1 70in H x 17 0in W x 9 0in D 4 32cm H x 43 2cm W x 22 9 D Cooling method Fan cooled 3 7 cfm ea Management Console connector DB 9 for RS 232 null modem cable sometimes called an Xmodem cable Power Supply Internal AC Power Connector IEC type male recessed at rear of chassis with adjacen
66. screw down lead posts If it is the reverse model it is located on the left rear The primary terminals are identified as positive A negative A and the secondary power terminals as Figure C5 0 48VDC Dual Source wiring connections to the ExternalTerminal Block on a LE2425A s 48VDC with Dual Source option 1 18 51 QIR A E n n A 36 70VDC 36 70VDC GND negative B positive B The chassis earth or ground GND is a threaded post with a 6 nut The Dual Source terminal block for the 24VDC and 125VDC are similar Note The GND should be hooked up first TheLE2425A unit has a floating ground so the user may elect to Ground either or terminal to suit the customer s use Before connecting hot lines to the Terminal Block of 48VDC 24VDC or 125VDC always use a digital voltmeter to measure the output voltage of the power supply and determine the lead which is more ve potential The more ve voltage lead from 48V or 48V supply must be connected to the post labeled The connection procedure is straightforward Simply connect the DC leads to the Switch s power terminals positive and negative screws The use of Ground GND is optional it connects to the Switch chassis Ensure that each lead is securely tightened The 24VDC amp 125VDC terminal block on Black Box Managed LE2425A switch s is similar to that described in the 48VDC information above IBLACK BOX
67. sitivity Worst case OPB OPB 1dB for LED aging 1dB for insertion loss Worst case distance Worst case OPB in dB Cable Loss in dB Km where the Cable Loss for 62 5 125 and 50 125 M m is 2 8 dB km and the Cable Loss for 100 140 Multi mode is 3 3 dB km and the Cable Loss for 9 125 Single mode is 0 5 dB km and the Cable Loss for 9 125 Single mode is 0 4 dB km LXSC25 and the Cable Loss for 9 125 Single mode is 0 25 dB km LXSC40 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 and the Cable Loss for 9 125 Single mode is 0 2 dB km LXSC70 The following data has been collected from component manufacturer s Agilent s and Lucent web sites and catalogs to provide guidance to network i designers and installers F10ST 10Mb Multi 850 62 5 125 0 m 100 140 9 5 19 5 50 125 31 19 5 100Mb Multi o 62 5 125 20 9 0 MsT Msc mode 0 50 125 En 5 5 5 100Mb Single 18 PM SSC EX mode 0 4 1300 9 125 ES 00Mb Single 40 PM SSCL es mode 0 4 1300 25 MTRJ fom Multi o 162 5 125 mode 4 50 125 23 5 3 ode GBIC 1000Mb Multi 0 55 1300 SXSC mode 10 GBIC 1000Mb bane 1300 9 125 9 5 20 85 17 105 21 LXSC10 mode 25 GBIC 1000Mb 1550 9 125 40 21 15 375 175 43 LXSC25 mous GBIC 1000Mb pane 1550 9 125 40
68. support Spanning Tree Protocol multi level QoS Port and tag based VLANs GVRP IGMP Snooping SNMPc GUI support Event Log SNTP client for time of day BootP and DHCP client for IP configuring and password security IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 2 4 Applications Black Box Managed Fiber Switches offer high performance and modularity They provide the flexibility of 100Mbps fiber and copper ports as well as Gigabit ports with industry standard LAN management software Black Box LE2425A Switches are easily used in a variety of applications including MANs metropolitan area networks client server computing secure VLAN performance upgrades to departmental networks and LAN traffic centers require GB backbone services The performance characteristic of the LE2425A Switches enables them to inter connect a series of subnets one subnet perLE2425A Switch port in a LAN traffic center The subnet connections may be via fiber or twisted pair cabling 100Mbps 10 Mbps speed and full or half duplex mode The mixed media capability is ideal for upgrading existing Ethernet LAN networks where existing cabling must be accommodated The fiber built in media capability is ideal for integrating future proof fiber cabling into the LAN structure Example 1 Black Box Managed fiber Switch for VLAN application Equipped with lots of useful features the Black Box Managed fiber switch Managed switch is able to h
69. t any QOS degradation while it is handling Ethernet traffic through its ports and buffers The Black Box LE2425A Managed fiber Switching hardware supports the IEEE 802 1p standard and fulfills its role in support of QOS giving packet processing priority to priority tagged packets according to the 802 1p standard In addition to hardware support for QOS the MNS BB software R2 supports two priority queues that can be shared across the eight levels of defined packet priorities for application specific priority control by the user through software configuration settings 2 2 8 Frame Buffering and Flow Control Black Box LE2425A fiber switches store and forward switches Each frame or packet is loaded into the Switch s memory and inspected before forwarding 12 IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 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 which add to the network traffic Since there is no
70. t manual ON OFF switch on AC models only Input Voltage 100 to 240 VAC auto ranging Input Frequency 47 to 63 Hz auto ranging Power Consumption 55 watts typical 60 watts max for a fully loaded fiber model 35 watts for a fully loaded copper only model DC Power Supply Options 48VDC Power Input Voltage 36 to 70 VDC 24VDC Power Input Voltage 20 to 36VDC 125VDC Power Input Voltage 88 to 150VDC Std Terminal Block GND Power Consumption same as for AC models see above For DC internal power supplies at 48VDC 24VDC and 125VDC including Dual Source options for continuity of operation when either of the DC input sources are interrupted see Appendices B and C Re IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 Per port jumpers and switches The copper daughter board has on internal switch on the port module for selecting MDI MDIX crossover on port 1 Other port specific user settings such as FDX or HDX copper 10 100 speed can be fixed using software commands Agency Approvals UL listed UL80950 cUL CE Emissions meet FCC Part 15 Class A Optional ETSI and NEBS L3 Certified Warranty Three years return to factory Made in USA NEBS Tested and Certified at Level 3 by an Independent Testing Laboratory IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 1 2 Ordering Information Managed Fiber Switch MODEL DESCRIPTION Managed fiber Switch LE2
71. ted port module options 1 AC Power Cord U S and other 115 VAC only 1 Set of metal Ears for 19 rack mounting 1 Installation and User Guide this manual Remove the items from the shipping container Be sure to keep the shipping container should you need to re ship the unit at a later date In the event there are items missing or damaged contact the party from whom you purchased the product If the unit needs to be returned please use the original shipping container if possible Refer to Section 6 Troubleshooting for specific return procedures IBLACK BOX Managed Fiber Switch Installation and User Guide 08 03 2 2 Product Description LE2425A The NEBS Level 3 certified LE2425A Managed Fiber Switch boosts the performance of large Ethernet LANs typically serving as a backbone switch It has the flexibility to handle a mix of both fiber and twisted pair switched ports along with Gigabit backbone port options The Managed Fiber switch withstands extremes of temperatures and humidity is encased in a rugged chassis and is adaptable to nearly any power station It s an ideal switch for demanding industrial telecomm or municipal installations such as telecomm central offices CO traffic control systems water treatment plants or manufacturing plants The LE2425A Managed fiber switch has up to 25 ports capacity all of which may be configured as fiber ports but still offers a space saving rack mount chassis
72. that is only 1U 1 70in or 4 32cm high The mixed media capability allows user selection of all popular flavors of fiber port connectors and modes including even 10Mb fiber along with Gigabit ports It also allows a mix of 10 100Mb RJ 45 copper ports and a fiber Gigabit port in the same unit This flexibility is achieved via a family of LE2425A port modules for copper and fiber built in emphasizing Small Form Factor fiber for high fiber port density 6 port modules for fiber and RJ 45 combinations and 1Gb port module selections using GBICs These modules can be factory configured in a base chassis unit or may be changed in the field by trained technicians to adapt the unit to the user s application and Ethernet cabling requirements Even evolving mixed media requirements for 10Mb and 100Mb fiber and copper as well as Gigabit ports can be handled by the Black Box Managed fiber switch product The packaging and power input options target the Black Box Managed fiber switch at heavy duty applications The chassis mounting rack style may be regular with the ports and LEDs in the front and the power input and management console connector in the rear or Reverse with the ports and LEDs and the power input and the management console connector all in the rear and a duplicate set of LEDs in the front Rack widths accommodated include standard 19 RETMA ETSI and 23 Telco Input power may be AC or 48VDC for Telco environments or 24VD
73. uide 08 03 3 2 Connecting Fiber Optic SC type Snap In The following procedure applies to installations using a PM with SC type fiber connectors i e using LE2430C LE2431C single mode When connecting fiber media to SC connectors simply snap on the two square male connectors into the SC female jacks of the PM until it clicks and secures 3 2 3 Connecting Single Mode Fiber Optic When using single mode fiber cable be sure to use single mode fiber port connectors Single mode fiber cable has a smaller diameter than multi mode fiber cable 9 125 microns for single mode 50 125 or 62 5 125 microns for multi mode where xx xx are the diameters of the core and the core plus the cladding respectively Single mode fiber allows full bandwidth at longer distances and may be used to connect 10 Mb nodes up to 10 Km apart or 18Km with the LE2431C The same procedures as for multi mode fiber applies to single mode fiber connectors Follow the steps listed in Section 3 2 2 above 3 2 4 Connecting Twisted Pair RJ 45 CAT3 CATS Unshielded or Shielded The RJ 45 ports of the Black Box Managed fiber switch can be connected to the following two media types 100BASE TX and 10BASE T CAT 5 cables should be used when making 100BASE TX connections When the ports are used as ports CAT 3 may be used In either case the maximum distance for unshielded twisted pair cabling is 100 meters 328 ft Media IEEE Standard Connector Twisted Pai

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