Quick Start Guide
Contents
1. IEEE 802 3U Defines CSMA CD access method and physical layer specifications for 1OOBASE TX Fast Ethernet Now incorporated in IEEE 802 3 2005 IEEE 802 3X Defines Ethernet frame start stop requests and timers used for flow control on full duplex links Now incorporated in IEEE 802 3 2005 IEEE 802 3Z Defines CSMA CD access method and physical layer specifications for 1000BASE Gigabit Ethernet Now incorporated in IEEE 802 3 2005 Lan Segment Separate LAN or collision domain LED Light emitting diode used for monitoring a device or network condition Page 34 724 746 5500 blackbox com ea wee Notes Local Area Network LAN A group of interconnected computer and support devices Media Access Control MAC A portion of the networking protocol that governs access to the transmission medium facilitating the exchange of data between network nodes MIB An acronym for Management Information Base It is a set of database objects that contains information about the device Modal Bandwidth Bandwidth for multimode fiber is referred to as modal bandwidth because it varies with the modal field or core diameter of the fiber Modal bandwidth is specified in units of MHz per km which indicates the amount of bandwidth supported by the fiber for a one kilometer distance Network Diameter Wire distance between two end stations in the same collision domain RJ 45 Connector A connector for twisted pair wiring Switched Ports2. LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 23 Chapter 5 Network Connections Figure 5 2 Making the fiber port connections Step 4 As a connection is made check the Link LED on the switch corresponding to the port to be sure that the connection is valid The fiber optic ports operate at 1 Gbps The maximum length for fiber optic cable operating at Gigabit speed will depend on the fiber type as listed in Tables 5 1 to 5 4 Connectivity Rules When adding hubs to your network note that because switches break up the path for connected devices into separate collision domains you should not include the switch or connected cabling in your calculations for cascade length involving other devices 1000BASE T Cable Requirements All Category 5 UTP cables that are used for 100BASE TX connections should also work for 1000BASE T providing that all four wire pairs are connected However it is recommended that for all critical connections or any new cable installations Category 5e or Category 6 cable should be used The Category 5e and 6 specifications include test parameters that are only recommendations for Category 5 Therefore the first step in preparing existing Category 5 cabling for running 1000BASE T is a simple test of the cable installation to be sure that it complies with the IEEE 802 3 2005 standards Page 24 724 746 5500 blackbox com LGB1108A Quick Soda Chapter 6 Labeling Connections 1000 Mbps Gigabit Et
3. 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 ba o lavabo s tano mojado o cerca de una alberca etc El aparato el ctrico debe ser usado nicamente con carritos o pedestales que sean recomendados por el fabricante El aparato el ctrico debe ser montado a la pared o al techo s lo como sea recomendado por el fabricante Servicio El usuario no debe intentar dar servicio al equipo el ctrico m s all a lo descrito en las instrucciones de operaci n Todo otro servicio deber ser referido a personal de servicio calificado El aparato el ctrico debe ser situado de tal manera 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 de fuentes de calor como radiadores registros de calor estufas u otros aparatos incluyendo amplificadores que producen calor El aparato el ctrico deber ser connectado a una fuente de poder s lo del tipo descrito en el instructivo de operaci n o como se indique en el aparato 12 Precauci n debe ser tomada de tal manera que la tierra fisica y la polarizaci n del equipo no sea eliminada 13 Los cables de la fuen
4. 1 Introduction to Switching A network switch is one of the most important devices for today s networking technology It enables simultaneous transmission of multiple packets and it can partition a network more efficiently than bridges or routers When performance bottlenecks are caused by congestion at the network access point such as a file server devices can be connected directly to a switched port And by using full duplex mode the bandwidth of the dedicated segment can be doubled to maximize throughput When networks are based on repeater hub technology the distance between end stations is limited by a maximum hop count However a switch can subdivide the network into smaller and more manageable segments linking them to the larger network than can turn the hop count back to zero removing the limitation A switch can be easily configured in any Ethernet Fast Ethernet or Gigabit Ethernet network to significantly increase bandwidth while using conventional cabling and network cards 3 2 Application Examples The Gigabit Managed Switch uses 8 20 or 44 Gigabit Ethernet TP ports with Auto MDI X and two slots for the removable SFP module which supports a number of types of fiber connections including LC and BiDi LC modules It is not only designed to segment your network but also to provide a wide range of options in setting up network connections Some typical applications showing the 10 Port Gigabit Managed Switch LGB1108A are des
5. If the maximum number of sessions already exists an additional Telnet connection will not be able to log into the system LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 29 Chapter 9 Cabling 9 Cabling For 10BASE T and 100BASE TX connections the twisted pair cable must have two pairs of wires For 1000BASE T connections the twisted pair cable must have four pairs of wires Each wire pair is identified by two different colors For example one wire might be green and the other green with white stripes Also an RJ 45 connector must be attached to both ends of the cable CAUTION DO NOT plug a phone jack connector into any RJ 45 port Use only twisted pair cables with RJ 45 connectors that conform with FCC standards CAUTION Each wire pair must be attached to the RJ 45 connectors in a specific orientation The figure below illustrates how the pins on the RJ 45 connector are numbered Be sure to hold the connectors in the same ori entation when attaching the wires to the pins 1 8 8 1 Figure 9 1 RJ 45 connector pin numbers 10BASE T 100BASE TX Pin Assignments Use unshielded twisted pair UTP or shielded twisted pair STP cable for RJ 45 connections 100 ohm Category 3 or better cable for 10 Mbps connections or 100 ohm Category 5 or better cable for 100 Mbps connections Also be sure that the length of any twisted pair connection does not exceed 100 meters 328 feet The RJ 45 ports on the switch base unit supp
6. It is important to make sure you have a valid network topology If you no longer experience the problems after reverting to your old topology the new topology is probably at fault In addition you should make sure that your network topology contains no data path loops Check the Port Configuration A port on your switch may not be operating as you expect because it has been put into a blocking state by Spanning Tree GVRP automatic VLANs or LACP automatic trunking Note that the normal operation of the Spanning Tree GVRP and LACP features may put the port in a blocking state Or the port just may have been configured as disabled through software LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 27 Chapter 8 Power and Cooling Symptom Power LED is off Link LED is off Table 7 1 Troubleshooting chart Action Check connections between the switch the power cord and the wall outlet Contact Black Box Verify that the switch and attached device are powered on Be sure the cable is plugged into the switch and corresponding device If the switch is installed in a rack check the connections to the punchdown block and patch panel Verify that the proper cable type is used and that its length does not exceed specified limits Check the adapter on the attached device and cable connections for possible defects Replace the defective adapter or cable if necessary Page 28 724 746 5500 blackbox
7. LC Single Mode 20 km 1310 nm To Install an SFP Transceiver Step 1 Consider network and cabling requirements to select an appropriate SFP transceiver type Step 2 Insert the transceiver with the optical connector facing outward and the slot connector facing down Note that SFP transceivers are keyed so they can only be installed in one orientation Step 3 Slide the SFP transceiver into the slot until it clicks into place NOTE SFP transceivers are not provided in the switch package LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 17 Chapter 4 Installation Connecting to a Power Source You can plug or remove the power cord from the AC power socket to switch the power on and off Step 1 Insert the power cable plug directly into the AC socket located at the back of the switch Step 2 Plug the other end of the cable into a grounded 3 pin AC power source Step 3 Check the front panel LEDs as the device is powered on to be sure the POWER LED is lit If it isn t check that the power cable is plugged in correctly WARNING For international use you may need to change the AC power cable You must use a power cable set that has been approved for the socket type in your country Connecting to the Console Port The RJ 45 serial port on the switch s front panel is used to connect to the switch for out of band console configuration The command line driven configuration program can be accessed from a terminal or a PC r
8. Ports that are on separate collision domains or LAN segments TIA Telecommunications Industry Association Transmission Control Protocol Internet Protocol TCP IP Protocol suite that includes TCP as the primary transport protocol and IP as the network layer protocol User Datagram Protocol UDP UDP provides a datagram mode for the packet switched communications It uses the IP as the underlying transport mechanism to provide access to IP like services UDP packets are delivered just like IP packets connection less data grams that may be discarded before reaching their targets UDP is useful when TCP would be too complex too slow or unnecessary UTP Unshielded twisted pair cable Virtual LAN VLAN A Virtual LAN is a collection of network nodes that share the same collision domain regardless of their physical location or connection point in the network A VLAN serves as a logical workgroup with no physical barriers allowing users to share information and resources as though located on the same LAN LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 35 Black Box Tech Support FREE Live 24 7 Tech support the way it should be Ei S 4 Great tech support is just 60 seconds away at 724 746 5500 or blackbox com lt BLACK BOX About Black Box Black Box provides an extensive range of networking and infrastructure products You ll find everything from cabinets and racks and power and surge protect
9. a network card and the switch is in the wiring closet attach the other end of the cable segment to a modular wall outlet that is connected to the wiring closet See the next section Network Wiring Connections Otherwise attach the other end to an available port on the switch Make sure each twisted pair cable does not exceed 328 ft 100 meters in length NOTE Avoid using flow control on a port connected to a hub unless it is actually required to solve a problem Otherwise backpressure jamming signals may degrade overall performance for the segment attached to the hub Step 3 As each connection is made the Link LED on the switch corresponding to each port will light green 1000 Mbps or amber 100 Mbps to indicate that the connection is valid Network Wiring Connections Today the punchdown block is an integral part of many of the newer equipment racks It is actually part of the patch panel Instructions for making connections in the wiring closet with this type of equipment follows Step 1 Attach one end of a patch cable to an available port on the switch and the other end to the patch panel Step 2 If not already in place attach one end of a cable segment to the back of the patch panel where the punchdown block is located and the other end to a modular wall outlet Step 3 Label the cables to simplify future troubleshooting See Chapter 6 Labeling Connections Page 22 724 746 5500 blackbox com LGB1108A Quick Star
10. for 1000BASE T there are basically three measures that can be applied to try to correct the problem 1 Replace any Category 5 patch cables with high performance Category 5e or Category 6 cables 2 Reduce the number of connectors used in the link 3 Reconnect some of the connectors in the link Page 32 724 746 5500 blackbox com IA wee Fiber Standards Chapter 10 Glossary The International Telecommunication Union ITU T has standardized various fiber types for data networks These are summarized in the following table ITU T Standard G 651 G 652 G 652 C G 653 G 654 G 655 Table 9 3 Fiber standards Description Multimode fiber 50 125 micron core Non dispersion shifted fiber single mode 9 125 micron core Low water peak non dispersion shifted fiber single mode 9 125 micron core Dispersion shifted fiber single mode 9 125 micron core 1550 nm loss minimized fiber single mode 9 125 micron core Non zero dispersion shifted fiber single mode 9 125 micron core Application Short reach connections in the 1300 nm or 850 nm band Longer spans and extended reach Optimized for operation in the 1310 nm band but can also be used in the 1550 nm band Longer spans and extended reach Optimized for wavelength division multiplexing WDM transmission across wavelengths from 1285 to 1625 nm The zero dispersion wavelength is in the 1310 nm region Longer spans and extended reach Optim
11. CC 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 Industry Canada Le pr sent appareil num rique n met pas de bruits radio lectriques d passant les limites applicables aux appareils num riques de la classe A prescrites dans le Reglement sur le brouillage radio lectrique publi par Industrie Canada LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 3 N In OM Statement strucciones de Seguridad Normas Oficiales Mexicanas Electrical Safety Statement 1 2 3 4 5 oN Oo o 10 11 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 deber n ser guardadas para referencia futura Todas las advertencias en el aparato el ctrico y en sus instrucciones de operaci n deben ser respetadas
12. GBIC SFP from a mini GBIC slot without powering off the switch NOTE On the LGB1108A the mini GBIC slots are shared with the two 10 100 1000BASE T RJ 45 ports If a mini GBIC is installed in a slot the associated RJ 45 port is disabled and cannot be used The LGB1126A has 4 dual media SFP 10 100 11000 RJ 45 and 2 SFP ports The LGB1148A has 4 dual media ports SFP 10 100 1000 RJ 45 NOTE The mini GBIC ports operate only at full duplex Half duplex operation is not supported NOTE Ensure the network cable is NOT connected when you install or remove a mini GBIC Figure 4 6 Inserting an SFP transceiver into a slot Table 4 1 Supported SFP Transceivers Model Name Description 1000BASE SX GE SFP Fiber Module LC Multimode 850 nm 1000BASE SX GE SFP Fiber Module LC Multimode 1310 nm 2 km 1000BASE LX GE SFP Fiber Module LC Single Mode 10 km 1000BASE LX GE SFP Fiber Module LC Single Mode 30 km These models are 1000BASE LX GE SFP Fiber Module LC Single Mode 50 km available Contact Tech Support for the correct SFP for your application 1990BASE LX GE SFP Fiber Module Bidi LC Single Mode 10 km 1310 nm 1000BASE LX GE SFP Fiber Module LC Single Mode 50 km 1000BASE LX GE SFP Fiber Module Bidi LC Single Mode 20 km 1550 nm 1000BASE LX GE SFP Fiber Module Bidi LC Single Mode 20 km 1310 nm 100BASE FX FE SFP Fiber Module LC Multimode 2 km 850 nm and 1310 nm 100BASE FX FE SFP Fiber Module
13. I X Ports 9 10 RJ 45 connector 100 1000M SFP 10BASE T RJ 45 100 ohm UTP cable Category 3 or better 100BASE TX RJ 45 100 ohm UTP cable Category 5 or better 1000BASE T RJ 45 100 ohm UTP or STP cable Category 5 5e or 6 LGB1126A Ports 1 20 RJ 45 connector Auto MDI X Ports 21 24 RJ 45 connector 100 1000M SFP Ports 25 26 100 1000M SFP 10BASE T RJ 45 100 ohm UTP cable Category 3 or better 100BASE TX RJ 45 100 ohm UTP cable Category 5 or better 1000BASE T RJ 45 100 ohm UTP or STP cable Category 5 5e or 6 LGB1148A Ports 1 44 RJ 45 connector Auto MDI X Ports 45 48 RJ 45 connector 100 1000M SFP 10BASE T RJ 45 100 ohm UTP cable Category 3 or better 100BASE TX RJ 45 100 ohm UTP cable Category 5 or better 1000BASE T RJ 45 100 ohm UTP or STP cable Category 5 5e or 6 Ports LGB1108A 8 10 100 1000 Mbps TP 2 100 1000 Mbps SFP Fiber 10 100 1000 Mbps TP dual media ports 1 RJ 45 console port LGB1126A 20 10 100 1000 Mbps TP 4 100 1000 Mbps SFP Fiber 10 100 1000 Mbps TP dual media ports 2 10 1000M SFP ports 1 RJ 45 console port LGB1148A 44 10 100 1000 Mbps TP 4 100 1000 Mbps SFP Fiber 10 100 1000 Mbps TP dual media ports 1 DB9 console port Switching Database 8K MAC address entries User Controls LGB1108A LGB1126A 1 Reset button LGB1148A 1 Mode button Indicators LEDs System Power TP Port status LINK ACT 10 100 1000M SFP
14. If the connected device is also configured to Auto the switch will automatically negotiate both link speed and communication mode e f the connected device has a fixed configuration for example 100 Mbps at half or full duplex the switch will automatically sense the link speed but will default to a communication mode of half duplex Because the 10 26 or 48 Port Gigabit Managed Switch behaves in this way in compliance with the IEEE 802 3 standard if a device connected to the switch has a fixed configuration at full duplex the device will not connect correctly to the switch The result will be high error rates and very inefficient communications between the switch and the device Make sure all devices connected to the 10 26 or 48 Port Gigabit Managed Switch are configured to auto negotiate or are configured to connect at half duplex all hubs are configured this way for example Faulty or Loose Cables Look for loose or obviously faulty connections If they appear to be OK make sure the connections are snug If that does not correct the problem try a different cable Non Standard Cables Non standard and miswired cables may cause network collisions and other network problems and can seriously impair network performance Use a new correctly wired cable For pinouts and correct cable wiring a Category 5 cable tester is a recommended tool for every 100BASE TX and 1000BASE T network installation Improper Network Topologies
15. J 45 ports Reset console Default port Figure 2 2 Front panel of the 26 Port Gigabit Managed Switch LGB1126A Page 8 724 746 5500 blackbox com eee wee Chapter 2 Overview Switch TP LEDs TP and 100 1G SFP ports 10 100 1000BASE T RJ 45 ports Mode button Figure 2 3 Front panel of the 48 Port Gigabit Managed Switch LGB1148A NOTE The 26 Port Gigabit Managed Switch s front panel is similar to the 10 Port Switch Both switches have the same Power LED and Reset Default button The LGB1108A has 8 10 100 1000BASE T RJ 45 ports 2 TP and 100 1G SFP ports 16 switch TP LEDs and 1 RJ 45 console port The LGB1126A has 20 10 100 1000BASE T RJ 45 ports 4 dual media UTP SFP ports 2 SFP ports 40 switch TP LEDs and 1 RJ 45 console port The LGB1148A has 44 10 100 1000BASE T RJ 45 ports 4 dual media UTP SFP ports 88 switch TP LEDs 1 DB9 console port and 1 Mode button 2 2 Features e Switch Architecture This switch performs a wire speed non blocking switching fabric which enables wire speed transport of multiple packets at low latency on all ports simultaneously The switch also features full duplex capability on all ports which effectively doubles the bandwidth of each connection It uses store and forward technology to ensure maximum data integrity With this technology the entire packet must be received into a buffer and checked for validity before being forwarded This prevents errors fro
16. LGB1108A LGB1126A lt gt BLACK BOX LGB1148A Customer Order toll free in the U S Call 877 877 BBOX outside U S call 724 746 5500 Support FREE technical support 24 hours a day 7 days a week Call 724 746 5500 or fax 724 746 0746 www blackbox com infofblackbox com Information Trademarks Trademarks Used in this Manual Black Box and the Double Diamond logo are registered trademarks of BB Technologies Inc Intel is a registered trademark of Intel Corporation Xerox is a registered trademark of Xerox Corporation Any other trademarks mentioned in this manual are acknowledged to be the property of the trademark owners We re here to help If you have any questions about your application or our products contact Black Box Tech Support at 724 746 5500 or go to blackbox com and click on Talk to Black Box You ll be live with one of our technical experts in less than 60 seconds Page 2 724 746 5500 blackbox com LOBOS Quick fart Guide FCC Statement Federal Communications Commission and Industry Canada Radio Frequency Interference Statements This equipment generates uses and can radiate radio frequency energy and if not installed and used properly that is in strict accordance with the manufacturer s instructions may cause interference to radio communication It has been tested and found to comply with the limits for a Class A computing device in accordance with the specifications in Subpart B of Part 15 of F
17. Pinouts Pin MDI Signal Name 1 Bid 2 Bid 3 Bid irectional Pair A Plus BI_DA irectional Pair A Minus Bl DA irectional Pair B Plus BI_DB idirectional Pair C Plus BI_DC idirectional Pair C Minus Bl DC idirectional Pair B Minus Bl DB idirectional Pair D Plus BI_DD idirectional Pair D Minus Bl DD Cable Testing for Existing Category 5 Cable MDI X Signal Name Bi directiona idirectiona idirectiona idirectiona idirectiona idirectiona idirectiona idirectiona Pair B Plus Bl DB Pair B Minus Bl DB Pair A Plus BI_DA Pair D Plus Bl DD Pair D Minus Bl DD Pair A Minus Bl DA Pair C Plus Bl DC Pair C Minus Bl DC Installed Category 5 cabling must pass tests for Attenuation Near End Crosstalk NEXT and Far End Crosstalk FEXT This cable testing information is specified in the ANSI TIA EIA TSB 67 standard Additionally cables must also pass test parameters for Return Loss and Equal Level Far End Crosstalk ELFEXT These tests are specified in the ANSI TIA EIA TSB 95 Bulletin The Additional Transmission Performance Guidelines for 100 Ohm 4 Pair Category 5 Cabling NOTE When testing your cable installation be sure to include all patch cables between switches and end devices Adjusting Existing Category 5 Cabling to Run 1000BASE T If your existing Category 5 installation does not meet one of the test parameters
18. Port status LINK ACT SPD 100 1000M Temperature Tolerance Operating 32 to 104 F 0 to 40 C Humidity Tolerance Operating 5 to 90 non condensing Power Input 100 240 VAC 50 60 Hz internal power supply autosensing Consumption 20 Watts maximum Dimensions LGB1108A 1 7 Hx 11 W x 6 5 D 4 4 x 28 x 16 6 cm LGB1126A 1 75 1U H x 17 4 W x 8 3 D 4 4 x 44 2 x 21 1 cm LGB1148A 1 75 1U H x 17 4 W x 11 8 D 4 4 x 44 2 x 30 cm Weight LGB1108A 2 97 Ib 1 35 kg LGB1126A 5 3 Ib 2 4 kg LGB1148A 9 Ib 4 1 kg 1 2 Switch Features Flow Control Full duplex IEEE 802 3x Half duplex Backpressure Forwarding Mode Store and forward Throughput 35 71 Mbps Page 6 724 746 5500 blackbox com LOBO Quick Start Guide 1 3 Management Features In Band Management SSH SSL Telnet SNMP or HTTP Out of Band Management RS 232 RJ 45 console port Software loading HTP TFTP in band Console out of band 1 4 Standards Standards IEEE 802 3 10BASE T Ethernet twisted pair copper IEEE 802 3u 100BASE TX Ethernet twisted pair copper IEEE 802 3ab 1000BASE TX Ethernet twisted pair copper IEEE 802 3z 1000BASE X Ethernet IEEE 802 3x flow control capability ANSI IEEE 802 3 autonegotiation IEEE 802 1Q VLAN IEEE 802 1p Class of service IEEE 802 1X Access control IEEE 802 1D Spanning tree IEEE 802 1w Rapid spanning tree IEEE 802 1s Multiple spanning tre
19. RJ 45 wiring standard 10BASE TX 100BASE T straight through cable Crossover Wiring If the twisted pair cable is to join two ports and either both ports are labeled with an X MDI X or neither port is labeled with an X MDI a crossover must be implemented in the wiring When autonegotiation is enabled for any RJ 45 port on this switch you can use either straight through or crossover cable to connect to any device type You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet End A ER pamm Ei rfi Figure 9 3 Crossover wiring EIA TIA 586B RJ 45 wiring standard 10BASE TX 100BASE T crossover cable 1000BASE T Pin Assignments All 1000BASE T ports support automatic MDI MDI X operation so you can use straight through cables for all network connections to PCs or servers or to other switches or hubs The table below shows the 1000BASE T MDI and MDI X port pinouts These ports require that all four pairs of wires be connected Note that for 1000BASE T operation all four pairs of wires are used for both transmit and receive Use 100 ohm Category 5 5e or 6 unshielded twisted pair UTP or shielded twisted pair STP cable for 1000BASE T connections Also be sure that the length of any twisted pair connection does not exceed 100 meters 328 feet LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 31 Chapter 9 Cabling Table 9 2 1000BASE T MDI and MDI X Port
20. ach the brackets to the device using the screws provided in the mounting accessory Figure 4 3 Attaching the brackets LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 15 Chapter 4 Installation Step 2 Mount the device in the rack using an optional rackmount kit using four rackmounting screws not provided Be sure to secure the lower rackmounting screws first to prevent the brackets from being bent by the weight of the switch Figure 4 4 Installing the switch in a rack Step 3 If installing a single switch only turn to Connection to a power source later in this chapter Step 4 If installing multiple switches mount them in the rack one below the other in any order Desktop or Shelf Mounting Step 1 Attach the four adhesive rubber feet to the bottom of the first switch Figure 4 5 Attaching the adhesive rubber feet Step 2 Set the device on a flat surface near an AC power source making sure there are at least two inches of space on all sides for proper airflow Step 3 If installing a single switch only go to Connecting to a Power Source later in this chapter Step 4 If installing multiple switches attach four adhesive feet to each one Place each device squarely on top of the one below in any order Page 16 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter 4 Installation Installing an Optional SFP Transceiver You can install or remove a mini
21. com LGB1108A Quick Start Guide Chapter 9 Cabling 8 Power and Cooling Problems 8 1 When You Turn the Unit On If the power indicator does not turn on when the power cord is plugged in you may have a problem with the power outlet power cord or internal power supply However if the unit powers off after running for a while check for loose power connections power losses or surges at the power outlet If you still cannot isolate the problem the internal power supply may be defective Verify that all system components have been properly installed If one or more components appear to be malfunctioning such as the power cord or network cabling test them in an alternate environment where you are sure that all the other components are functioning properly 8 2 In band Access You can access the management agent in the switch from anywhere within the attached network using Telnet or a Web browser However you must first configure the switch with a valid IP address subnet mask and default gateway If you have trouble establishing a link to the management agent check to see if you have a valid network connection Then verify that you entered the correct IP address Also be sure the port through which you are connecting to the switch has not been disabled If it has not been disabled then check the network cabling that runs between your remote location and the switch NOTE The management agent accepts up to four simultaneous Telnet sessions
22. cribed below NOTE The LGB1126A and LGB1148A are similar to the LGB1108A but have 20 or 44 Gigabit ports The LGB1126A and LGB1148A also have dual media SFP 10 100 1000 ports which are described in the specifications section of this manual Remote site application in enterprise or small businesses Peer to peer application when used in two remote offices e Office network e High performance requirement environment e Advanced security for network safety applications e Data voice and videoconferencing applications y Int t eee poe n a ii brc Eu E LGB1108A LGB1108A z IBER GB1108A SO e il E J E JL y o ul E Figure 3 1 Network connection between remote site and central site Page 12 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter 4 Installation Cl iiL ig up oy Ma a x Figure 3 2 Peer to peer network connection W ul mE LGB1108A suae LGB1108A 7 2282228222 a Lu COLECTIE www uj w e qu l A gt N Figure 3 3 Office network connection Page 13 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter 4 Installation 4 Installation 4 1 Selecting a Site The switch can be mounted in a standard 19 inch equipment rack via an optional rackmount kit or on a flat surface Be sure to follow the guidelines below when choosing a location The site should Be at the center of all the de
23. e IEEE 802 3ad Link aggregation control protocol LACP IEEE 802 1AB Link layer discovery protocol LLDP 1 5 Compliances Compliance EN55022 CISPR 22 Class A EN 61003 FCC Class A CE Mark Immunity EN61000 4 2 3 4 5 6 8 11 EN 55024 Chapter 1 Specifications LAE 724 746 5500 blackbox com Page 7 Chapter 2 Overview 2 Overview 2 1 Introduction The 10 26 or 48 Port Gigabit Managed Switch is an affordable managed switch that is a key part of a reliable infrastructure for your business network This switch delivers the kind of intelligent features you need e to improve the availability of your critical business applications e to protect your sensitive information and to optimize your network bandwidth Easy to set up and use the Gigabit Managed Switch provides stable and quality performance to support all types of data voice security and wireless technologies It provides the ideal combination of affordability and capabilities for entry level networking for small businesses or home office applications and helps create a more efficient better connected workforce Switch TP LEDs lt BLACK BOX 10 Port Gigabit Managed Switch www blackbox com CONSOLE Reset RJ 45 Default console 10 100 1000BASE T RJ 45 ports TP and 100 1G SFP ports port Figure 2 1 Front panel of the 10 Port Gigabit Managed Switch LGB1108A Switch TP LEDs TP and 100 1G SFP ports RJ 45 10 100 1000BASE T R
24. ee E xoe s rae e ned ppt yi AR PRSETER mm 8 A 8 2r A RN 9 2 3 Description or Hard WANES aia aaa lite 10 A 12 3 1 Introduction to Switching sssssssseeeeeeeeneneneenenene nee eene enr enr ene enr eene en eene ee en enn nn 12 3 2 Application EXarples ccc A td 12 Mz A A A E TEE TT 14 Ay a 14 4 2 Ethernet CablidG ooononinniininninnnninnnnnn nn 14 4o Edulipiment Checklist usce E OE O 14 24 Whats Included teet tete Ro be ged tl ad diles 15 4 5 MOUNTING INSTTUCIONS asias toa 15 5 Network CONMOCEONS mms sd ati 22 S1 Connecting NetWork DEVICES barsa dias 22 Bade TwistedsPair Device tdi odds 22 6 Labeling CONNECHONS isidro da 26 dy IOUblENOO UNO iia dde pdas 27 8 Power and Cooling Problems ccccccccceecceceeeeeeeeseeseeeeceeceeeseeeceecaeceecseceeeeesceeeeecaeseesaeceeeeeeeeceessesaesseeseeseeseessesiesieteeteeeeees 29 81 When You Turri the Unit Oni cinco eec are pecore bb ente in ten p Dems b E A E EA E Dil tnde Y Deis Piin b e Dee M ddnde 29 2 Mis 9 alo Ma eds cR A rn ERIE 29 Di CARING iaa ici 30 5g A OACI One 34 LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 5 Chapter 1 Specifications 1 Specifications 1 1 Physical Characteristics Aggregate Bandwidth 20 Gbps Buffer Architecture 1392 KB on chip frame buffer Network Interface LGB1108A Ports 1 8 RJ 45 connector Auto MD
25. factor pluggable SFP transceiver slots which are shared with RJ 45 ports 21 24 and 2 additional SFP ports The LGB1148A 48 Port Gigabit Managed Switch has 4 dual media UTP SFP ports Ports 45 48 The following table shows a list of transceiver types that have been tested with the switch For an updated list of vendors supplying these transceivers contact your local dealer For information on the recommended standards for fiber optic cabling see 1000 Mbps Gigabit Ethernet Collision Domain in Section 5 2 Tables 5 1 through 5 4 or contact Tech Support at 724 746 5500 Table 2 1 Supported SFP Transceivers Media Standard Filter Diameter Microns Wavelenth nm Maximum Distance 50 125 850 550 m 1804 5 ft 1000BASE SX 62 5 125 850 275 m 902 2 ft 9 125 1310 10 km 6 2 mi 1000BASE LX LHX XD ZX 9 125 1550 30 5 km 19 0 mi 9 125 1300 10 km 6 2 mi n a TX 1310 RX 1550 20 km 12 4 mi 1000BASE LX Single Strand n a TX 1550 RX 1310 20 km 12 4 mi 1000BASE T n a n a 100 m 328 1 ft 50 125 850 2 km 1 2 mi 100BASE FX 6285 1125 1550 15 km 9 3 mi NOTE Maximum distance may vary for different SFP vendors Reset Default or Mode button The LGB1108A and LGB1126A each have a Reset Default button The LGB1148A has a Mode button The Reset Default and Mode buttons function in the same way The Mode or Reset button is used to change port mode display link speed warm reboot and reload defaults To reload defau
26. hernet Collision Domain Table 5 1 Maximum 1000BASE T Gigabit Ethernet cable length Cable Type Maximum Cable Length Connector Category 5 5e or 6 100 ohm UTP 100 m 328 ft RJ 45 or STP Table 5 2 Maximum 1000BASE SX Gigabit fiber cable lengths Fiber Size Fiber Bandwidth Maximum Cable Length Connector 160 MHz km 220 m 722 ft IKE 62 5 125 micron multimode 200 MHz km 275 m 902 ft LE 400 MHz km 500 m 1641 ft KG 50 125 micron multimode 500 MHz km 550 m 1805 ft KG Table 5 3 Maximum 1000BASE LX LHX XD ZX Gigabit fiber cable lengths Fiber Size Fiber Bandwidth Maximum Cable Length Connector 9 125 micron single mode fiber n a 10 km 6 2 miles LC 1310 nm 9 125 micron single mode fiber n a 30 km 18 6 miles LC 1550 nm 50 km 31 1 miles LC Table 5 4 Maximum 1000BASE SX Gigabit fiber cable lengths Fiber Size Fiber Bandwidth Maximum Cable Length Connector Single mode n a 20 km 12 4 miles BIDI TX 1310 nm RX 1550 nm ii Single mode n a 20 km 12 4 miles BIDI TX 1310 nm RX 1550 nm s 100 Mbps Fast Ethernet Collision Domain Table 5 5 Maximum Fast Ethernet cable length Cable Type Maximum Cable Length Connector Category 5 5e or 6 100 ohm UTP or STP 100 m 328 ft RJ 45 LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 25 Chapter 7 Troubleshooting 6 Labeling Connections When planning a network installation it is essential to label the opposing ends of cables and to record where each cab
27. ion The Chip ID ofthis switch The MAC Address ofthis switch The current GMT system time and date The system time is obtained through the configured SNTP Server if any MUENTE Figure 4 11 System Information Help screen a LaS 724 746 5500 blackbox com Page 21 Chapter 5 Network Connections 5 Network Connections 5 1 Connecting Network Devices The switch is designed to be connected to 10 100 or 1000 Mbps network cards in PCs and servers as well as to other switches and hubs It may also be connected to remote devices using optional SFP transceivers 5 2 Twisted Pair Devices Each device requires an unshielded twisted pair UTP cable with RJ 45 connectors at both ends Use Category 5 5e or 6 cable for 1000BASE T connections use Category 5 or better for 100BASE TX connections Cabling Guidelines The RJ 45 ports on the switch support automatic MDI MDI X pinout configuration so you can use standard straight through twisted pair cables to connect to any other network device PCs servers switches routers or hubs For more information on cabling see Chapter 9 Cables CAUTION Do not plug a phone jack connector into an RJ 45 port This will damage the switch Use only twisted pair cables with RJ 45 connectors that conform to FCC standards Connecting to PCs Servers Hubs and Switches Step 1 Attach one end of a twisted pair cable segment to the device s RJ 45 connector Step 2 If the device is
28. ion products to media converters and Ethernet switches all supported by free live 24 7 Tech support available in 60 seconds or less Copyright 2015 Black Box Corporation All rights reserved LGB1108A Quick Start Guide Rev 2 724 746 5500 blackbox com ea wee
29. ized for operation in the region from 1500 to 1600 nm Extended long haul applications Optimized for high power transmission in the 1500 to 1600 nm region with low loss in the 1550 nm band Extended long haul applications Optimized for high power dense wavelength division multiplexing DWDM operation in the region from 1500 to 1600 nm LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 33 Chapter 10 Glossary 10 Glossary 10BASE T IEEE 802 3 specification for 10 Mbps Ethernet over two pairs of Category 3 4 or 5 UTP cable 100BASE TX IEEE 802 3u specification for 100 Mbps Ethernet over two pairs of Category 5 UTP cable 1000BASE LH Specification for long haul Gigabit Ethernet over two strands of 9 125 micron core fiber cable 1000BASE LX IEEE 802 3z specification for Gigabit Ethernet over two strands of 50 125 62 5 125 or 9 125 micron core fiber cable 1000BASE SX IEEE 802 3z specification for Gigabit Ethernet over two strands of 50 125 or 62 5 125 micron core fiber cable 1000BASE T IEEE 802 3ab specification for Gigabit Ethernet over 100 ohm Category 5 5e or 6 twisted pair cable using all four wire pairs Autonegotiation Signaling method allowing each node to select its optimum operational mode e g speed and duplex mode based on the capabilities of the node to which it is connected Bandwidth The difference between the highest and lowest frequencies available for network signals A
30. le is connected This will enable users to easily locate interconnected devices isolate faults and change your topology without wasting time To best manage the physical implementations of your network follow these guidelines e Clearly label the opposing ends of each cable Using your building s floor plans draw a map of the location of all network connected equipment For each piece of equipment identify the devices to which it is connected Note the length of each cable and the maximum cable length supported by the switch ports To make your labels easy to understand use a location based key when assigning prefixes to your cable labeling Use sequential numbers for cables that originate from the same equipment Differentiate between racks by naming them accordingly e Label each separate piece of equipment Display a copy of your equipment map including keys to all abbreviations at each equipment rack Page 26 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter 7 Troubleshooting 7 Troubleshooting Most problems are caused by the following situations Check for these items first when starting your troubleshooting Connecting to Devices That Have a Fixed Full Duplex Configuration The RJ 45 ports are configured as Auto That is when connecting to attached devices the switch will operate in one of two ways to determine the link speed and the communication mode half duplex or full duplex e
31. lso synonymous with wire speed the actual speed of the data transmission along the cable Collision Domain Single CSMA CD LAN segment CSMA CD Carrier Sense Multiple Access Collision Detect is the communication method employed by Ethernet Fast Ethernet and Gigabit Ethernet End Station A workstation server or other device that does not forward traffic Ethernet A network communication system developed and standardized by DEC Intel and Xerox using baseband transmission CSMA CD access logical bus topology and coaxial cable The successor IEEE 802 3 standard provides for integration into the OSI model and extends the physical layer and media with repeaters and implementations that operate on fiber Thin coax and twisted pair cable Fast Ethernet A 100 Mbps network communication system based on Ethernet and the CSMA CD access method Full Duplex Transmission method that allows two network devices to transmit and receive concurrently effectively doubling the bandwidth of that link Gigabit Ethernet A 1000 Mbps network communication system based on Ethernet and the CSMA CD access method IEEE Institute of Electrical and Electronic Engineers IEEE 802 3 Defines carrier sense multiple access with collision detection CSMA CD access method and physical layer specifications IEEE 802 3AB Defines CSMA CD access method and physical layer specifications for 1000BASE T Gigabit Ethernet Now incorporated in IEEE 802 3 2005
32. lts Press the Mode button for less than 5 seconds for a warm boot or press the Mode button for more than 5 seconds to reset the switch back to factory default settings and reboot Page 10 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter 3 Network Planning e Port and System Status LEDs The switch includes a display panel for system and port indications that simplify installation and network troubleshooting The LEDs are located on the left side of the front panels for easy viewing Details are shown below and in Tables 2 2 and 2 3 Table 2 2 Port Status LEDs LED Conditions Status TP Link ACT Green avis raffic is present it Green when the TP link is on 1000 Mbps inks when the TP link is on 100 Mbps f when the TP link is on 10 Mbps TP Speed Green ow SFP Link ACT Green Amber Lit Amber when the SFP link is on 100 Mbps inks when any traffic is present wW Table 2 3 System Status LEDs LED Conditions Status Power Green OFF Lit when power is on e Power Supply Socket There is a standard 120 VAC power socket on the rear panel of the switch AC Line 100 240V 50 60Hz art 15 ith P This device complies with ofthe FCC Rules h ce amp MADE IN TAIWAN Figure 2 2 Back panel it Green when TP link is good blinks when any Lit Green when the SFP link is on 1000 Mbps eee 724 746 5500 blackbox com Page 11 Chapter 3 Network Planning 3 Network Planning 3
33. m being propagated through out the network Network Management Options The switch can also be managed over the network with a Web browser or Telnet application The switch includes a built in network management agent that allows it to be managed in band using SNMP or RMON Groups 1 2 3 9 protocols It also has an RJ 45 console port connector on the front panel for out of band management A PC may be connected to this port for configuration and monitoring out of band via a null modem serial cable For more information on cabling see Chapter 9 Cables NOTE For a detailed description of the management features refer to the User s Manual LGB1108A Quick Start Guide 724 746 5500 blackbox com Page 9 Chapter 2 Overview 2 3 Description of Hardware e 1000BASE T Ports The switch contains 8 20 or 44 1000BASE T RJ 45 ports All RJ 45 ports support automatic MDI MDI X operation autonegotiation and IEEE 802 3x autonegotiation of flow control so the optimum data rate and transmission can be selected automatically e SFP Transceiver Slots The LBG1108A 10 Port Gigabit Managed Switch supports the small form factor pluggable SFP transceiver slots which are shared with RJ 45 port 9 and 10 In the default configuration if an SFP transceiver purchased separately is installed in a slot and has a valid link on the port the associated RJ 45 port is disabled The LGB1126A 26 Port Gigabit Managed Switch also supports the small form
34. me the default username is admin and the password field remains blank Connect to 192 168 20 22 The server 192 168 20 22 at LGB1108A requires a username and password Warning This server is requesting that your username and password be sent in an insecure manner basic authentication without a secure connection User name i admin v Password Remember my password Figure 4 9 Web User Interface screen NOTE If you need to configure the function or parameter refer to the detail in the User Guide Or access the switch and click help under the Web GUI A help screen will provide you with help content to walk you through the process of setting the parameters LGB1 108A Information LGB1108A 8 Port 10 100 1000Base T 2 100 1G SFP L2 Plus Managed Switch TIM0123456789 192 168 1 2 255 255 255 0 192 168 1 253 40 cT 99 Figure 4 10 Web Help Function screen Page 20 724 746 5500 blackbox com IU Start Guide Chapter 5 Network Connections System Information Help Windows Internet Explorer a http 192 168 1 2 help help sys htm A 0 20 s System Information Help The switch system information is provided here The system contact configured in Configuration System Information System Contact The system name configured in Configuration System Information System Name The system location configured in Configuration System Information System Locat
35. nts to be sure you have received all the components Then before beginning the installation be sure you have all other necessary installation equipment Page 14 724 746 5500 blackbox com ee Chapter 4 Installation 4 4 What s Included e 10 26 or 48 Port Gigabit Managed Switch LGB1108A LGB1126A or LGB1148A AC power cord e 4 Adhesive rubber feet e Mounting accessory for 19 rack optional e RS 232 to RJ 45 console cable for LGB1108A and LGB1126A or DB9 to DB9 console cable for LGB1148A e This installation guide e User s manual on CD NOTE Call Black Box immediately if any of these items is missing or damaged WARNING The mini GBICs are Class 1 Laser Devices Avoid direct eye exposure to the beam coming from the transmit port 4 5 Mounting Instructions The switch can be mounted in a standard 19 inch equipment rack or on a desktop or shelf Rackmounting Before rackmounting the switch check the following e Temperature Since the temperature within a rack assembly may be higher than the ambient room temperature check that the rack environment temperature is within the specified operating temperature range 32 to 104 F 0 to 40 C Mechanical loading Do not place any equipment on top of a rackmounted unit e Circuit overloading Be sure that the supply circuit to the rack assembly is not overloaded e Grounding Rackmounted equipment should be properly grounded To rackmount devices Step 1 Att
36. ort automatic MDI MDI X operation so you can use straight through cables for all network connections to PCs or servers or to other switches or hubs In straight through cable Pins 1 2 3 and 6 at one end of the cable are connected straight through to Pins 1 2 3 and 6 at the other end of the cable When using any RJ 45 port on this switch you can use either straight through or crossover cable Table 9 1 10BASE T and 100BASE TX MDI and MDI X Port Pinouts Pin MDI Signal Name MDI X Signal Name 1 Transmit Data plus TD Receive Data plus RD 2 Transmit Data minus TD Receive Data minus RD 3 Receive Data plus RD Transmit Data plus TD 6 Receive Data minus RD Transmit Data minus TD ZEN Not used Not used NOTE The and signs represent the polarity of the wires that make up each wire pair Page 30 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter9 Cabling Straight Through Wiring If the twisted pair cable is to join two ports and only one of the ports has an internal crossover MDI X the two pairs of wires must be straight through When auto negotiation is enabled for any RJ 45 port on this switch you can use either straight through or crossover cable to connect to any device type You must connect all four wire pairs as shown in the following diagram to support Gigabit Ethernet pa HI eT KW ES PS 6 6 CS 7 Figure 9 2 Straight through wiring EIA TIA 586B
37. t Guide Chapter 5 Network Connections Figure 5 1 Network wiring connections Fiber Optic SFP Devices An optional Gigabit SFP transceiver can be used for a backbone connection between switches or for connecting to a high speed server Each single mode fiber port requires 9 125 micron single mode fiber optic cable with an LC connector at both ends Each multimode fiber optic port requires 50 125 or 62 5 125 micron multimode fiber optic cabling with an LC connector at both ends WARNING This switch uses lasers to transmit signals over fiber optic cable The lasers are inherently eye safe in normal operation However users should never look directly at a transmit port when it is powered on Step 1 Remove and keep the LC port s rubber plug When not connected to a fiber cable the rubber plug should be replaced to protect the optics Step 2 Check that the fiber terminators are clean You can clean the cable plugs by wiping them gently with a clean tissue or cotton ball moistened with a little ethanol Dirty fiber terminators on fiber optic cables will impair the quality of the light transmitted through the cable and lead to degraded performance on the port Step 3 Connect one end of the cable to the LC port on the switch and the other end to the LC port on the other device Since LC connectors are keyed the cable can be attached in only one orientation
38. te 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 14 El equipo el ctrico debe ser limpiado nicamente de acuerdo a las recomendaciones del fabricante 15 En caso de existir una antena externa deber ser localizada lejos de las lineas de energia 16 El cable de corriente deber ser desconectado del cuando el equipo no sea usado por un largo periodo de tiempo 17 Cuidado debe ser tomado de tal manera que objectos liquidos no sean derramados sobre la cubierta u orificios de ventilaci n 18 Servicio por personal calificado deber ser provisto cuando A El cable de poder o el contacto ha sido da ado u B Objectos han ca do o l quido ha sido derramado dentro del aparato o C El aparato ha sido expuesto a la lluvia o D El aparato parece no operar normalmente o muestra un cambio en su desempe o o E El aparato ha sido tirado o su cubierta ha sido da ada Page 4 724 746 5500 blackbox com ee Table of Contents Table of Contents UM ouis c RRMERREERNERUUI T 6 TehocPhysicdl Ghiarec telis CS 7 esce cst estoit eg cage euis Meu UNUM E IUIS 6 V2 SWIG IU SNR STEREO RR E ETENE IEE E EE SAEN A EAEE EEE E AEE E 6 1 3 Management Eeatlul6S cie oe 7 SA o AEE AEEA EA ten ccendatea tance AE TEE A AAEE EEEE AE 7 15 ComiplIdlit E unseres AEN E ben b mar R
39. unning a terminal emulation program The pin assignments used to connect to the serial port are provided in Table 4 2 12345678 Figure 4 7 Serial port RJ 45 pinout Wiring Map for Serial Cable Table 4 2 Supported SFP Transceivers Switch s 8 Pin Serial Port Null Modem PC s 9 Pin DTE Port 2 RXD receive data lt 3 TXD transmit data 3 RXD receive data y nre gt mE 2 RXD receive data 5SGND Signalground wenn nnnnnn nanan ee 5 SGND Signal ground NOTE No other pins are used Figure 4 8 Plug in the console port Page 18 724 746 5500 blackbox com LGB1108A Quick Start Guide Chapter 4 Installation The serial port s configuration requirements are as follows e Default baud rate 115 200 bps e Character size 8 characters e Parity None e Stop bit One e Data bits 8 e Flow control none Using Web based Management The default values of the managed switch are listed in the table below Table 4 3 Using Web based Management IP Address 192 168 1 1 Subnet Mask 25525525510 Default 192 168 1 254 Username admin Password a LaS 724 746 5500 blackbox com Page 19 Chapter 4 Installation After configuring the managed switch in the CLI via the switch s serial interface you can browse it For instance type http 192 168 1 1 without the quotes in the address bar in a browser and it will show the following screen and ask you to log in When you log in the first ti
40. vices you want to link and near a power outlet Be able to maintain its temperature within 32 to 104 F 0 to 40 C and its humidity within 10 to 90 noncondensing Be accessible for installing cabling and maintaining the devices e Allow the status LEDs to be clearly visible Make sure the twisted pair Ethernet cable is always routed away from power lines radios transmitters or any other electrical interference Make sure that the 10 Port Gigabit Managed Switch is connected to a separate grounded power outlet that provides 100 to 240 VAC 50 to 60 Hz 4 2 Ethernet Cabling To ensure proper operation when installing the switch in a network make sure that the current cables are suitable for 100BASE TX or 1000BASE T operation Check the following criteria against the current installation of your network e Cable type Unshielded twisted pair UTP or shielded twisted pair STP cable with RJ 45 connectors Category 5 or Category 5e with a maximum length of 100 meters 328 1 feet is recommended for 100BASE TX and Category 5e or 6 with maximum length of 100 meters 328 1 feet is recommend for 1000BASE T Protection from radio frequency interference emissions e Electrical surge suppression e Separation of electrical wires and data based network wiring e Safe connections with no damaged cables connectors or shields Figure 4 2 SFP transceiver 4 3 Equipment Checklist After unpacking this switch please check the conte
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