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G

LOSSARY

 

–  69  –

UDP packets are delivered just like IP packets – connection-less datagrams that 
may be discarded before reaching their targets. UDP is useful when TCP would 
be too complex, too slow, or just unnecessary.

UTP

Unshielded twisted-pair cable.

V

IRTUAL

 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. 

Summary of Contents for GEL-2870

Page 1: ...LevelOne GEL 2870 24 GE 4 GE Combo SFP L2 SNMP Switch Installation Guide version 1 0...

Page 2: ......

Page 3: ...INSTALLATION GUIDE GEL 2870 Layer 2 SNMP Switch with 24 10 100 1000BASE T RJ 45 Ports and 4 Gigabit Combination Ports RJ 45 SFP GEL 2870 E122009 MW R02 150200000091A...

Page 4: ......

Page 5: ...nterference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his...

Page 6: ...ording to EN 55022 Limit class A for harmonic current emission according to EN 61000 3 2 Limitation of voltage fluctuation and flicker in low voltage supply system according to EN 61000 3 3 Immunity P...

Page 7: ...tly at the fiber TX port and fiber cable ends when they are powered on Ne regardez jamais le laser tant qu il est sous tension Ne regardez jamais directement le port TX Transmission fibres optiques et...

Page 8: ...he socket outlet must be near to the unit and easily accessible You can only remove power from the unit by disconnecting the power cord from the outlet This unit operates under SELV Safety Extra Low V...

Page 9: ...320 Power Cord Set U S A and Canada The cord set must be UL approved and CSA certified The minimum specifications for the flexible cord are No 18 AWG not longer than 2 meters or 16 AWG Type SV or SJ 3...

Page 10: ...e connexion portant l appellation Neutre et avec raccordement direct la terre masse Cordon lectrique Il doit tre agr dans le pays d utilisation Etats Unis et Canada Le cordon doit avoir re u l homolog...

Page 11: ...teeingang haben Die Netzsteckdose mu in der N he des Ger ts und leicht zug nglich sein Die Stromversorgung des Ger ts kann nur durch Herausziehen des Ger tenetzkabels aus der Netzsteckdose unterbroch...

Page 12: ...erviceable user parts WARNING Installation and removal of the unit must be carried out by qualified personnel only WARNING When connecting this device to a power outlet connect the field ground lead o...

Page 13: ...cluded electrical components once the product has reached the end of its life MANUFACTURING MATERIALS There are no hazardous nor ozone depleting materials in this product DOCUMENTATION All printed doc...

Page 14: ...COMPLIANCES AND SAFETY STATEMENTS 14...

Page 15: ...nventions are used throughout this guide to show information RELATED PUBLICATIONS The following publication gives specific information on how to operate and use the management functions of the switch...

Page 16: ...ABOUT THIS GUIDE 16 REVISION HISTORY This section summarizes the changes in each revision of this guide DECEMBER 2009 REVISION This is the second revision of this guide...

Page 17: ...NG 29 Introduction to Switching 29 Application Examples 30 Application Notes 34 3 INSTALLING THE SWITCH 35 Selecting a Site 35 Ethernet Cabling 36 Equipment Checklist 37 Mounting 38 Installing an Opti...

Page 18: ...TING 53 Diagnosing Switch Indicators 53 Power and Cooling Problems 54 Installation 54 In Band Access 54 B CABLES 55 Twisted Pair Cable and Pin Assignments 55 Fiber Standards 59 C SPECIFICATIONS 61 Phy...

Page 19: ...BASE SX Gigabit Ethernet Cable Lengths 50 Table 7 Maximum 1000BASE LX Gigabit Ethernet Cable Length 51 Table 8 Maximum 1000BASE LH Gigabit Ethernet Cable Length 51 Table 9 Maximum Fast Ethernet Cable...

Page 20: ...TABLES 20...

Page 21: ...6 Figure 9 Attaching the Brackets 39 Figure 10 Installing the Switch in a Rack 39 Figure 11 Attaching the Adhesive Feet 40 Figure 12 Inserting an SFP Transceiver into a Slot 41 Figure 13 Power Socket...

Page 22: ...FIGURES 22...

Page 23: ...of powerful features for Layer 2 switching delivering reliability and consistent performance for your network traffic It brings order to poorly performing networks by segregating them into separate b...

Page 24: ...on to the console port 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 RS 232 serial port DB 9 c...

Page 25: ...RJ 45 port is disabled The following table shows a list of transceiver types which have been tested with the switch For an updated list of vendors supplying these transceivers contact your local deale...

Page 26: ...es Figure 2 Port LEDs Table 2 Port Status LEDs LED Condition Status Link Activity On Flashing Yellow Port has established a valid 10 100 Mbps network connection Flashing indicates activity On Flashing...

Page 27: ...he AC power cord Figure 3 Power Supply Socket DIAG On Green The system diagnostic test has completed successfully On Yellow The system diagnostic test is in progress Flashing Yellow The system diagnos...

Page 28: ...CHAPTER 1 Introduction Description of Hardware 28...

Page 29: ...experiencing congestion server power user or hub can be attached directly to a switched port And by using full duplex mode the bandwidth of the dedicated segment can be doubled to maximize throughput...

Page 30: ...he near future You can easily build on this basic configuration adding direct full duplex connections to workstations or servers When the time comes for further expansion just connect to another hub o...

Page 31: ...ex network down into a single efficient bridged node increasing overall bandwidth and throughput In the figure below the 1000BASE T ports on the switch are providing 100 Mbps connectivity for up to 28...

Page 32: ...MF link up to 5 km and a 1000BASE LH link up to 70 km This allows the switch to serve as a collapsed backbone providing direct connectivity for a widespread LAN The figure below illustrates the switch...

Page 33: ...port groups or traffic can be explicitly tagged to identify the VLAN group to which it belongs Untagged VLANs can be used for small networks attached to a single switch However tagged VLANs should be...

Page 34: ...unless it is actually required to solve a problem Otherwise back pressure jamming signals may degrade overall performance for the segment attached to the hub 3 Based on recommended standards the leng...

Page 35: ...ace approximately two inches on all sides for proper air flow be accessible for installing cabling and maintaining the devices allow the status LEDs to be clearly visible Make sure twisted pair cable...

Page 36: ...k Cable type Unshielded twisted pair UTP or shielded twisted pair STP cables with RJ 45 connectors Category 3 or better for 10BASE T Category 5 or better for 100BASE TX and Category 5 5e or 6 for 1000...

Page 37: ...Four adhesive foot pads Bracket Mounting Kit containing two brackets and eight screws for attaching the brackets to the switch Power Cord either US Continental Europe or UK RS 232 console cable This I...

Page 38: ...ient room temperature check that the rack environment temperature is within the specified operating temperature range See page 62 Mechanical Loading Do not place any equipment on top of a rack mounted...

Page 39: ...the Brackets 2 Mount the device in the rack using four rack mounting screws not provided Be sure to secure the lower rack mounting screws first to prevent the brackets being bent by the weight of the...

Page 40: ...he four adhesive feet to the bottom of the first switch Figure 11 Attaching the Adhesive Feet 2 Set the device on a flat surface near an AC power source making sure there are at least two inches of sp...

Page 41: ...ASE SX 1000BASE LX 1000BASE LH To install an SFP transceiver do the following 1 Consider network and cabling requirements to select an appropriate SFP transceiver type 2 Insert the transceiver with th...

Page 42: ...evice is powered on to be sure the PWR LED is lit If not check that the power cable is correctly plugged in NOTE SFP transceivers are hot swappable The switch does not need to be powered off before in...

Page 43: ...The pin assignments used to connect to the serial port are provided in the following table Figure 14 Serial Port DB 9 DTE Pin Out WIRING MAP FOR SERIAL CABLE The serial port s configuration requireme...

Page 44: ...CHAPTER 3 Installing the Switch Connecting to the Console Port 44 Data bits 8 Flow control none...

Page 45: ...or 100BASE TX connections and Category 3 or better for 10BASE T connections CABLING GUIDELINES The RJ 45 ports on the switch support automatic MDI MDI X pinout configuration so you can use standard st...

Page 46: ...wiring closet See the 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 100 meters 328 ft in lengt...

Page 47: ...Attach one end of a patch cable to an available port on the switch and the other end to the patch panel 2 If not already in place attach one end of a cable segment to the back of the patch panel wher...

Page 48: ...ean 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 performa...

Page 49: ...rresponding to the port to be sure that the connection is valid The 1000BASE SX 1000BASE LX 1000BASE LH fiber optic ports operate at 1 Gbps full duplex with auto negotiation of flow control The maximu...

Page 50: ...tallations Category 5e enhanced Category 5 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 fi...

Page 51: ...ft 3 2 miles LC Table 8 Maximum 1000BASE LH Gigabit Ethernet Cable Length Fiber Size Fiber Bandwidth Maximum Cable Length Connector 9 125 micron single mode fiber N A 2 m 70 km 7 ft 43 5 miles LC Tabl...

Page 52: ...e guidelines 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 devi...

Page 53: ...not clear contact your dealer for assistance Link LED is Off Verify that the switch and attached device are powered on Be sure the cable is plugged into both the switch and corresponding device If th...

Page 54: ...l the other components are functioning properly IN BAND ACCESS You can access the management agent in the switch from anywhere within the attached network using Telnet a web browser or other network m...

Page 55: ...ite stripes Also an RJ 45 connector must be attached to both ends of the cable The figure below illustrates how the pins on the RJ 45 connector are numbered Be sure to hold the connectors in the same...

Page 56: ...r end of the cable When using any RJ 45 port on this switch you can use either straight through or crossover cable Note The and signs represent the polarity of the wires that make up each wire pair ST...

Page 57: ...r 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 Figure 20 Crossover Wiring White Orange Stripe Orange...

Page 58: ...g 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...

Page 59: ...mmarized in the following table Table 14 Fiber Standards ITU T Standard Description Application G 651 Multimode Fiber 50 125 micron core Short reach connections in the 1300 nm or 850 nm band G 652 Non...

Page 60: ...smission in the 1500 to 1600 nm region with low loss in the 1550 nm band G 655 Non Zero Dispersion Shifted Fiber Single mode 9 125 micron core Extended long haul applications Optimized for high power...

Page 61: ...P or STP cable Category 5 5e or 6 Maximum Cable Length 100 m 328 ft Ports 25 28 RJ 45 SFP shared ports 1000BASE T RJ 45 100 ohm UTP or STP cable Category 5 5e or 6 Maximum Cable Length 100 m 328 ft Gi...

Page 62: ...ZE 44 0 x 17 2 x 4 4 cm 17 32 x 6 77 x 1 73 in TEMPERATURE Operating 0 C to 45 C 32 F to 113 F Storage 40 C to 70 C 40 F to 158 F HUMIDITY Operating 10 to 90 non condensing AC INPUT 100 to 240 V 50 60...

Page 63: ...MODE Store and forward THROUGHPUT Wire speed FLOW CONTROL Full duplex IEEE 802 3x Half duplex Back pressure MANAGEMENT FEATURES IN BAND MANAGEMENT SSH Telnet SNMP or HTTP OUT OF BAND MANAGEMENT RS 23...

Page 64: ...l Link Aggregation Control Protocol IEEE 802 1D 2004 Spanning Tree Protocol Rapid Spanning Tree Protocol Multiple Spanning Tree Protocol ISO IEC 8802 3 COMPLIANCES EMISSIONS EN55022 CISPR 22 Class A E...

Page 65: ...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 12...

Page 66: ...ystem 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 int...

Page 67: ...and physical layer specifications for 100BASE 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 duple...

Page 68: ...MHz per km which indicates the amount of bandwidth supported by the fiber for a one km distance NETWORK DIAMETER Wire distance between two end stations in the same collision domain RJ 45 CONNECTOR A c...

Page 69: ...oo slow or just 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...

Page 70: ...GLOSSARY 70...

Page 71: ...EMC 64 safety 64 connectivity rules 10 Mbps 51 100 Mbps 51 1000 Mbps 50 console port pin assignments 43 contents of package 37 cooling problems 54 cord sets international 42 D desktop mounting 40 devi...

Page 72: ...panel of switch 23 rear panel socket 27 RJ 45 port 24 connections 45 pinouts 58 RMON 24 RS 232 port 24 rubber foot pads attaching 40 S screws for rack mounting 37 serial cable 24 port 24 SFP transcei...

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Page 74: ...GEL 2870 E122009 MW R02 150200000091A...

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