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3Com 5102M-FBP Network Card User Manual

1. eoe LEECZSESRESAESEE oloje mm cc ale e Lt oco m E lele olele BE E olele ra elelelelelelalele Sle Porti 56 ki Port 2____ 6 g Per Port Status Indicators Port 3 o0 G Port4 50 x Poris1 2 j Per Port Activity Indicators Ports3 4 O per Port Redundancy Indicators Port1 Sex ina Pot2 9e apo Pots 8e nc Port4 Gre ra Figure 3 4 10BASE FB Port Switching Module Faceplate and ONline System Concentrator 3 20 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Table 3 5 describes how to interpret the 1OBASE FB M odule LEDs Table 3 5 Interpreting the 1OBASE FB Module LEDs LED Name Color State Indicates Activity yellow Off No packets are received on the fiber segment Ports 1 4 On Constant activity on the fiber segment Blinking Module receives packets from segment to which it is attached Status green Off Port disabled Ports 14 On Port enabled or in standby and link integrity is OK 1 blink No light detected 2 blinks Jabber 3 blinks Partition 4 blinks Remote fault 5 blinks Invalid data received 6 blinks Low light received you can disable it using Low Light switch setting Redundancy green Off Redundancy is disabled ports are Ports 1 2 independent of each other Ports 3 4 TAS So On Redundancy is enabled between ports 1 amp 2 and 3 amp 4 Blink
2. i 100m Note All transceiver connections to concentrators are 100 meters Figure 2 7 Network Configured With 8 Concentrators 2 20 ONline Ethernet 10BASE FB M odule Installation and Operation Guide In this example the path between transceivers attached to Concentrators A and G has the greatest fiber equivalent distance 4240 meters even though the link distance is less than the A to H path 3100 meters versus 3200 meters Because 4240 meters exceeds the 4200 meter maximum this configuration is illegal and results in improper network operation Because it is not always obvious which path between transceivers has the highest fiber equivalent distance use Table 2 8 to help you determine the equivalent distances Table 2 8 Fiber Equivalent Distances Betw een Transceivers Total Fiber Equivalent Total Link Number of Fiber Distance Fiber Distance Concentrators Path of Equivalent Betw een Betw een A Concentrators Distance Transceivers Transceivers meters meters meters A D 2700 5 950 3650 A H 3200 5 950 4150 A G 3100 6 1140 4240 D H 1700 3 570 2270 D G 1600 4 760 2360 G H 2100 4 760 2860 Designing and Expanding the Network 2 21 Fiber Backbone Unshielded Twisted Pair to the Desk Configuring a network with unshielded twisted pair cabling to the desk is similar to an all fiber network because the cabling is star wired in both Cases Be aware of the
3. LED State Indication Possible Cause Corrective Action Off Port Disabled Port disabled Enable port 10BASE FB Check concentrator Module not power status powered up Reinsert the 10BASE FB M odule Broken LED Press the LED check button on Controller Module Bad 10BASE FB Replace module Module Troubleshooting 4 3 Table 4 2 Troubleshooting Using the Port Status LEDs Continued LED State Indication 1 Blink No Light Received Possible Cause Cables crossed Corrective Action Verify TX on remote device is connected to RX on 10BASE FB Module Insufficient optical power received Check 10BASE FB Module optical power using a light meter Try High power on remote device Check optical power of remote device If optical power levels are OK check cable it may be bad or too long Broken fiber Check and fix RX fiber cable link Bad fiber Clean and reconnect connections fiber both ends Bad remote Replace remote device device or port or try another port Bad 10BASE FB Module Replace module 4 4 ONline Ethernet 10BASE FB Module Installation and Operation Guide Table 4 2 Troubleshooting Using the Port Status LEDs Continued LED State Indication Possible Cause Corrective Action 2 Blinks Jabber Loop in network Disconnect each link in the network one at atime to isolate the loop Bad 10BASE FB Replace module Module 3
4. a a Enable and disable each port on the module Set the ports to independent Ethernet networks within the concentrator Port Switching 10BASE FB M odule Set the module to independent Ethernet networks within the concentrator LOBASE FB Module Set redundancy between two ports on the module or between ports on another 10BASE FB Module using Advanced EMM V4 01 or higher Enable and disable the low light warning Set the fiber optic transmission power for each port The following ONline management modules provide network management capabilities for the ONline System Concentrator and its modules a a Ethernet M anagement M odule V4 01 Q Token Ring Management Module V3 10 FDDI M anagement Module V2 00 Installing and Operating the Module 3 13 When an ONline management module is installed in a concentrator all of the dip switch settings on the 10BASE FL Module are overridden When you first install the module 1 The network channel defaults to isolated mode The ports are automatically disabled so that unapproved users cannot be added Therefore you must enable the ports you wish to use and set the ports to the appropriate Ethernet network through the management commands 2 Allother module settings retain the same default values as the dip switch default values Therefore you only need to changes these values through management if you do not want the default values This section describes the man
5. Conc s DTE Conc ER gt DTE Conc R 1 X L V I Li t T t if Conc Conc i 1 I i 1 1 1 n i DTE iy Conc i Conc i I i 4 he Ak 3 1 4 I Conc DTE 1 g Each branch from the center of the network allows 2 km effective distance providing 4 km overall network diameter This topology allows maximum is area coverage E Figure 2 5 All Fiber Network The Ethernet four repeater rule limits the number of repeaters between any two transceivers to four In general this restricts most vendor configurations to a maximum of four concentrators connected in series This restriction does not apply to the ONline System Concentrators when using ONline 10BASE FB M odules to connect concentrators This is because the 1OBASE FB Modules use a synchronous repeaterless technology 2 18 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Network Distance Calculation Examples The following examples demonstrate how to calculate network distances for various all fiber networks Example Network With 3 Concentrators Figure 2 6 shows a network with 3 concentrators Concentrator A Concentrator B Concentrator C STO T Jo9mrc OTOT OTI NIE EEEH EFE ET TET ML AR adidas 1 km 1 km A B Transc
6. 1 Use Table 2 3 to determine the optical power budget for 50 125 cable 5 5 dB 2 Use Table 2 6 to determine the worst case loss for two ST patch panels 1 5 dB Designing and Expanding the Network 2 13 3 Use Table 2 7 to determine the worst case loss for the 50 125 fiber cable 2000 meters x 5 dB 2 10 0 dB Add the dB losses to determine total path loss The total path loss is 11 5 dB The 11 5 dB optical loss exceeds the optical power budget of 5 5 dB Therefore the link will not work and the 1OBASE FB M odule Port Status LED will signal a Low Light condition Thus you must use High Power mode When you use High power see Table 2 4 the optical power budget of 13 5 dB is sufficient to handle the 11 5 dB path loss Choosing a Network Backbone Cabling Structure Because of fiber s long distance capabilities and immunity to noise 3Com strongly recommends using fiber as the backbone You can choose between two fundamental configuration topologies when connecting your network backbone using 10BASE FB M odules in an ONline System Concentrator Q Star Configuration Q Serial Configuration 2 14 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Star Configuration Wire your network in a star configuration using an ONline System Concentrator as the central point in the network Wiring in a star topology configuration has two major benefits Q Faults in the cable plant affect only a piece of the netw
7. Keep unused cable ports capped to keep the optics clean 6 Attach the fiber cables to the fiber ports on the front of the 10BASE FB Module as shown in Figure 3 3 Installing and Operating the Module 3 11 z 1 m In i 19 Figure 3 3 10BASE FB Module Connection 7 Make sure transmit and receive cables are Q Clearly marked or color coded Q Connected to the appropriate ports on the 10BASE FB Module Q Properly cleaned with an appropriate fiber optic cleaning solution before installation Note Do not exceed the bend radius for the fiber cable when directing the cables under the concentrator Refer to the cable manufacturer s specifications for minimum bend radius 8 Attach the other ends of the cables to either Q Another 10BASE FB module QO 3Com 10BASE FB Star Coupler port Q 3Com 10BASE B Transceiver 3 12 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Q 3Com Fault Tolerant 10BASE FB Transceiver M ake sure that the transmit fiber at one end always connects to a receive port at the other end Module or to any other product that is not compatible Caution Do not connect this module to an ONline TOBASE FL with the LOBASE FB modules These illegal connections may cause network failure Configuring the Module The ONline management modules can configure the following settings on the 10BASE FB Modules a a
8. Unpacking Procedures 3 3 Unshielded Twisted Pair Cable 2 22 V VDE compliance ii Verifying LED Operation 3 22 Network Assignment 3 22 4 Index
9. a U S A and Canada call 800 724 2447 Q Asia Pacific call 508 787 5151 Q Europe refer to the table below For European countries not listed call 31 30 60 299 00 Country Telephone Number Country Telephone Number Belgium 0800 71429 Netherlands 06 0227788 Denmark 800 17309 Norway 800 11376 Finland 0800 113153 Spain 900 983125 France 05 917959 Sweden 020 795482 Germany 0130 821502 U K 0800 966197 Ireland 1 800 553117 U S 800 876 3266 Italy 1678 79489 Technical Support B 3 For access to customer service for all 3Com products call 800 876 3266 You can also contact the Integrated Systems Division ISD on the Internet by using the e mail address techsupp chipcom com Returning Products for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization RM A number A product sent to 3Com without an RMA number will be returned to the sender unopened at the sender s expense To obtain an RM A number for Integrated Systems Division products formerly Chipcom use the following numbers Country Telephone Number Fax Number U S and Canada 800 7242447 508 787 3400 Europe 44 1442 275860 No Fax Asia Pacific 508 787 5296 508 787 3400 Accessing the 3Com MIB The 3Com Management Information Base M IB for the Integrated Systems Division describes commands that enable you to manage 3Com SNM P based products The M IB is available over the Interne
10. the 1OBASE FB Modules You can insert or remove the module while the concentrator is operating this is called a hot swap To install a LOBASE FB Module 1 Do one of the following Q If you do not have a management module installed in the concentrator set the dip switches on the board if different from the default setting After you complete the installation procedure go to the Monitoring the Front Panel section to verify the installation Q If you have a management module installed in the concentrator complete this installation procedure and then configure the module using the commands as described in the Configuring the M odule section 2 Locate a blank slot in the concentrator If there is no blank slot remove a blank panel on the concentrator to expose a slot for a 10BASE FB Module 3 10 ONline Ethernet 10BASE FB M odule Installation and Operation Guide 3 Insert the module into the board guides at the top and bottom of the slot and slide it into the concentrator Make sure that the connector is well seated into the backplane of the concentrator Figure 3 2 shows the installation of a LOBASE FB Module Figure 3 2 Installing the 1OBASE FB Module 4 Fasten the spring loaded screws on the front of the 1OBASE FB M odule faceplate to the concentrator using your fingers do not overtighten 5 Remove the plastic fiber optic covers from the cable ports
11. ENABLED High Power Optics ENABLED High Power Optics Dip Setting DISABLED 3 18 ONline Ethernet 10BASE FB M odule Installation and Operation Guide This display tells you the status of the specific port It includes the management and dip switch settings from the board The following command displays detailed information about the 1OBASE FB Module in slot 8 of the concentrator ONline show module 8 verbose ENTER Port Display for Module 5104M FB1 Slot Module Version Network General Information 08 5104M FB1 00x ISOLATED ETHERNET 2 5104M FB1 ONline Ethernet 10BASE FB Module Network Dip Setting ETHERNET 1 Low Light Warning DISABLED Low Light Warning Dip Setting DISABLED This display tells you the status of the specific module It includes the management and dip switch settings from the board For more information on the SHOW commands refer to the Q Appropriate ONline management module installation and operation guide Q ONline Management Commands Guide Monitoring the Front Panel The LEDs on the front panel of the 1OBASE FB M odule allow you to monitor the status of each port The 10BASE FB Module has 10 LEDs on the front panel that allow you to monitor diagnostic activity and redundancy status for each port Figure 3 4 shows the locations of these indicators Installing and Operating the Module 3 19
12. Installation and Operation Guide Concentrator A SSS ESS Je Tee e THTETO e shielded U slolblolalolaldololalaiolol Twisted Pair A D BG ob EE BGO 150m 8 e e o e o s jojo S Unshielded Twisted Pair Concentrator C WUEEEUHS O SSS EPPPPEPSEF Unshielded Twisted Pair Cc Lamm 1 Maximum 4200m Diameter 2 Equivalent Distances Concentrator A 470 m Concentrator B 305 m Concentrator C 190 m 3 Total Cable Length Between Transceivers 1725m 4 Remaining Distance 1510m Figure 2 8 Sample Configuration Distance Calculation To determine if your network configuration is legal 1 Use 4200 m as the maximum network diameter for a pure fiber network as defined by the 802 3 specification 2 Calculate the equivalent distances for each concentrator and subtract the total from 4200 see figures for details 3 Subtract all cable lengths between the two transceivers and if the result is greater than zero the configuration is within legal Ethernet limits Rule 5 For the configuration shown in Figure 2 8 to work ensure the fiber equivalent distance between Transceiver A and Transceiver B is less than 4200 meters As shown in the calculation there are still 1510 meters left for expansion in this configuration Therefo
13. ONline network management This section contains the following topics Q Configuring Ports for Fault Tolerance Q Implementing Total Backbone Fault Tolerance Configuring Ports for Fault Tolerance You can configure the 10BASE FB Module ports in one of four different Ways Q Normal Configuration Ports 1 through 4 operate as independent cable ports Q Standard Redundant Configuration In this configuration Port 1 acts as the primary port and port 2 as the backup for 1 Port 3 acts as the primary port and port 4 as the backup for 3 Q Flexible Redundant Configuration You can arbitrarily assign primary and backup ports to any pair of ports You can configure this mode only through the advanced management commands provided with EMM V3 0 or greater Q Normal and Redundant Configuration You can enable redundancy between one set of ports and have the remaining two ports operate as independent ports 2 26 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Setting Redundancy When you enable redundancy between two ports the ports are automatically enabled Q Port 1 or 3 asthe primary link which passes data Q Port 2 or 4 as the redundant link which does not pass data in either direction However the link is monitored for any failures the Port Status LED indicates any problems For maximum cable plant fault tolerance connect both the primary and backup ports back to the central
14. Settings Set ected weird ate aerate ane SERVE 3 9 Interpreting the 10BASE FB Module LEDs 321 Network Check Codes oov vr Ress 3 22 Troubleshooting Using the Port Activity LEDs 4 2 Troubleshooting Using the Port Status LEDs 4 3 ONline Ethernet 10BASE FB M odule Installation and Operation Guide xi How to Use This Guide This guide is designed to help you understand the features indicators and installation procedures for the Q 3Com ONline Ethernet Port Switching 10BASE FB M odules M odel Numbers 5102M FBP and 5104M FBP Q 3Com ONline Ethernet TOBASE FB Module Model Number 5104M FB1 This guide also contains information on troubleshooting and diagnostics for operation verification In addition a configuration section provides you with network configuration information Audience This guide contains instructions for installing the modules and maintaining normal operation It is intended for the following people at your site Q Hardware installer Q System Network manager ONline Ethernet 10BASE FB M odule Installation and Operation Guide xiii Structure of This Guide This guide contains the following chapters Chapter 1 Introduction Introduces the principal features of the ONline Ethernet Port Switching 10BASE FB M odules and the ONline Ethernet 10BASE FB M odule Chapter 2 Designing and Expanding the Network Contains configuration information to help
15. dBm 14 25 dBm 2 25 dBm Specifications A 3 Receiver Specifications Table A 3 lists receiver specifications for the LOBASE FB M odule Table A 3 Receiver Specifications Light Detector Silicon PIN photodiode Input Range Optical power input of 8 0 dBm to 30 0 dBm Bit Error Rate 1 in 107 over dynamic range Dynamic Range 22 0 dB Supported Fiber Optic Cables You can use the following fiber optic cables with the 1OBASE FB M odule a a a a 50 125 62 5125 85 125 100 140 The fiber optic cable must be a a a Micron diameter graded index Duplex fiber 150 MHz km rating or better A 4 ONline Ethernet 1OBASE FB Module Installation and Operation Guide Fiber Optic Interface Table A 4 lists specifications for the fiber optic interface Table A 4 Fiber Optic Interface Specifications Data Rate 10 Mbps million bits per second Data Modulation Manchester Diagnostic Modulation Pulse Width Fiber Optic Interface ST SM A and FC type Signaling Compatible with all LOBASE FB and 10BASE FB products Pow er Requirements Table A 5 lists power requirements for the 10BASE FB Module Table A 5 Power Requirements Power Requirements 1 7 Amp 95V Fuse 4 0 Amps for 5 V Fast blow Power Consumption 8 5 Watts BTU hour 29 0 Specifications A 5 Environmental Specifications Table A 6 lists electrical specifications for the 1OBASE FB M
16. following additional rules for configuring a network Q The four repeater rule in Ethernet limits the number of LOBASE T modules between any two transceivers The path from the TP port to the backplane counts as 1 2 of a repeater and the path from the backplane to the TP port counts as 1 2 of a repeater You must add a bridge if the path from one transceiver to another exceeds the four repeater rule Q The equivalent fiber distance for the 1OBASE T Modules is defined in Understanding Network Configuration in this chapter 420 meters for signals that externally enter a 1OBASE T M odule port 165 meters for signals that internally enter a 10BASE T Module through the ONline concentrator backplane For each pair of 1OBASE T M odules that a signal goes through there is a fiber equivalent distance of 585 meters 420 m 165 m 2585 m In addition if a signal makes a roundtrip through a 10BASE T M odule that is enters a 10BASE T port externally and exits through another port on the same 10BASE T M odule that counts as 585 meters of fiber equivalent distance and as a full repeater Example Sample Configuration Distance Calculation Use the following example to determine if the 1OBASE T Transceivers in Figure are within legal Ethernet limits Identify the two transceivers that are likely to be the greatest fiber equivalent apart in Figure 2 8 In this case they are 1OBASE T Transceivers A and B 2 22 ONline Ethernet 10BASE FB M odule
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18. odule Table A 6 Electrical Specifications Operating Temperature 0 to 50 C 32 to 122 F Storage Temperature 30 to 65 C 222 to 149 F Humidity Less than 9596 non condensing Mechanical Specifications Table A 7 lists mechanical specifications for the LOBASE FB Module Table A 7 Mechanical Specifications Dimensions 1 0 W x10 25 L x 8 5 H 2 54 cm x 26 04 cm x 21 6 cm Weight 1 25 Ib 0 57 kg 3Com 10BASE FB Network Products This section describes the fiber Ethernet products available from 3Com In addition to the Ethernet 10BASE FB M odules described in this guide the following fiber products are available from 3Com Q 3Com 10BASE FB Transceiver The 3Com 10BASE FB Transceiver Model Number 5101T FB connects a device to the fiber network The 10BASE FB Transceiver has an AUI port and a fiber port The AUI port connects to the device through the transceiver cable The fiber port connects to the fiber network A 6 ONline Ethernet 10BASE FB Module Installation and Operation Guide Q 3Com Fault Tolerant 1OBASE FB Transceiver The 3Com Fault Tolerant 10BASE FB Transceiver Model Number 5102T FBFT provides fault tolerance to the desktop The transceiver connects an existing network to a fault tolerant fiber backbone network It also provides a fault tolerant network connection for a mission critical device Q 3Com 10BASE FB Star Coupler The 3Com 10BASE FB Star Coupler M odel Number 9308
19. sections Q Troubleshooting Using the Port Activity LEDs Q Troubleshooting Using the Port Status LEDs Q Technical Assistance Troubleshooting 4 1 Troubleshooting Using the Port Activity LEDs If a port Activity LED does not light use Table 4 1 to help troubleshoot the problem Table 4 1 Troubleshooting Using the Port Activity LEDs LED State Off Possible Cause There is no traffic received from the segment Corrective Action None Port is disabled Use the EMM to check if the port is enabled or check the port dip switch setting Power is off Check the Controller Module Power LEDs Activity LED has burned out Press the LED check button on the Controller M odule 10BASE FB Module port is faulty Connect the cable to a different port 10BASE FB Module is faulty Try a different 10BASE FB Module Backplane connection is bad Reinsert the 10BASE FB Module If this fails try another concentrator slot 4 2 ONline Ethernet 10BASE FB Module Installation and Operation Guide Troubleshooting Using the Port Status LEDs A blinking Port Status indicator is always a sign that the port detects a potential problem Once a port detects a problem you can further analyze the problem by counting the number of blinks Table 4 2 provides troubleshooting suggestions for each of the blinking sequences Table 4 2 Troubleshooting Using the Port Status LEDs
20. 102M FBP 5104M FBP 5104M FB1 Collision Detection 100 deterministic Configuration Rules Compliant with IEEE 802 3 10BASE FB specifications Jabber Protection 10 8 1 msec Maximum Number of Nodes 1024 Backplane Interface 96 pin edge connector compatible with the ONline System Concentrator External Connector 4 pairs of fiber ports ST SMA or FC connectors Host Interface ONline System Concentrator bus interface standard Installation Attachment Two thumbscrews on the mounting bracket A 2 ONline Ethernet 10BASE FB Module Installation and Operation Guide Optical Specifications This section lists the optical specifications for the 10BASE FB M odule including Q Transmitter Specifications Q Receiver Specifications Q Supported Fiber Optic Cables Q Fiber Optic Interface Transmitter Specifications Light Source GaA1As LED at wavelength 820 20 nm Power coupled into fiber cable inclusive of ST SMA or FC connector loss Table A 2 lists normal and high power transmit specifications Table A 2 Transmit Power Cable Type Normal Power High Power 100 140 micron 11 5 dBm 3 0 dBm 4 5 dBm 2 25 dBm 0 29 NA fiber 85 125 micron 14 0 dBm 3 0 dBm 7 0 dBm 2 25 dBm 0 29 NA fiber 62 5 125 micron 0 275 NA fiber 17 0 dBm 3 0 dBm 10 0 dBm 2 25 dBm 50 125 micron 0 20 NA fiber 21 5 dBm 3 0
21. 2 the basic rules for network design Designing and Expanding the Network 2 Unpack the module Unpacking Procedures 3 If you do not havea management module Setting the Dip installed in the concentrator configurethe Switches dip switch settings to your specifications 4 Insert the module into a blank slot in the Installing the concentrator and tighten the faceplate Module screws 5 Establish connections from the 10BASE FB Installing the Module to another 10BASE FB Module or Module 10BASE FB Transceiver using the appropriate connectors and cabling 6 If you have a management module Configuring the installed in the concentrator configurethe Module module using the management commands 7 Verify LED status for normal operation Verifying LED and Note To correct problems consult the troubleshooting techniques in Chapter 4 Netw ork Assignments 3 4 ONline Ethernet 1OBASE FB Module Installation and Operation Guide Setting the Dip Switches The 10BASE FB M odules have two 10 position dip switches S1 and S2 located on the board Figure 3 1 shows the dip switches on the 10BASE FB Modules and the factory settings Q Dip switch S1 on the Port Switching Module differs from dip switch S1 on the M odule Switching M odule Figure 3 1 contains examples of both dip switches Q Dip switch S2 is identical for both the Port Switching Module and M odule Switching M odule except the M odule Switching M odule does not
22. 2 ONline Ethernet 10BASE FL Module 1 6 ONline Ethernet Management Module 3 13 ONline FDDI Management Module 3 13 on line technical services B 1 ONline Token Ring Management M odule 3 13 Optical Fiber Loss 2 11 Optical Power Dip Switch Setting 3 9 High and Normal Power 2 7 2 10 Management Command Syntax 3 17 Optical Power Budget High Power 2 9 Normal Power 2 8 ORnet 2 9 ORnet Products Attenuation 2 10 Optical Power Budget 2 9 P Patch Panel 2 11 Port Enable Dip Switch Setting 3 9 Management Command Syntax 3 14 Port LEDs 3 21 Port Redundancy Dip Switch Setting 3 7 Management Command Syntax 3 16 Ports Disabling 3 14 Enabling 3 14 Port Switching Fiber M odule Dip Switch Locations 3 6 Fiber Compatibility 1 6 Precautionary Procedures 3 2 Primary Link 3 16 R Redundant Link 3 16 Redundancy LED 2 29 returning products for repair B 4 S Serial Configuration 2 16 Setting Dip Switches 3 5 SNM P Commands B4 Specifications Environmental A 6 General A 2 Mechanical A 6 Optical A 3 Power Requirements A 5 Splice Insertion Loss 2 11 Star Configuration 2 15 T Technical Assistance 4 7 Technical Support 4 7 technical support B 1 Theory of Operation 1 4 Token Ring M anagement M odule 3 13 To the Desk Cabling Twisted Pair 2 22 Index 3 TriChannel Architecture 13 Troubleshooting Technical Assistance 4 7 Using the Activity LEDs 4 2 Using the Status LEDs 3 21 4 3 U
23. 2 22 Link Redundancy 1 2 Model Numbers A 8 Network Independence 1 3 Optical Power Budget 2 9 Port Redundancy 2 26 Redundancy Features 2 26 Serial Configuration 2 16 Specifications A 6 Star Configuration 2 15 Theory of Operation 1 4 TriChannel Architecture 1 3 Used as Network Backbone 1 4 10BASE FB Network Configurations Fiber Backbone Coaxial Connection 2 24 10BASE FB Star Coupler 1 2 3Com Bulletin Board Service 3ComBBS B 3 Index A Activity Indicator 3 21 All Fiber Network 2 17 Assign a Network 3 15 Using Dip Switches 3 7 Attenuation 2 10 Backbone Cabling 2 14 Serial Wiring 2 16 Star Wiring 2 15 Backbone Fault Tolerance 2 29 Bend Radius 3 12 Broken Cables Splicing 2 10 bulletin board service B 3 C Compatibility With Other Products 1 6 A 6 Connecting the 10BASE FB M odule 3 12 Connecting Fiber Cables A 8 D Dip Switch Settings 1 Dip Switch 3 7 S2 Dip Switch 3 9 Dip Switches 3 5 Channel Setting 3 8 Low Light Warning Enable Disable 3 10 Index 1 Optical Power 3 9 Port Enable Disable 3 9 Redundancy Enable Disable 3 7 Disable Redundancy 3 16 Distance Limitations 2 5 Electrostatic Discharge ESD 32 Enable Redundancy 3 16 Enable Disable Ports 3 14 Equivalent Fiber Distance 2 5 Ethernet 10BASE FB Module Front Panel LEDs 3 19 Ethernet Distance Limitations 2 2 Ethernet Management M odule 3 13 F Fault Tolerant 1OBASE FB Transceive
24. ASE FB Module 3 2 ONline Ethernet 10BASE FB Module Installation and Operation Guide Unpacking Procedures When unpacking your 10BASE FB M odule 1 Verify that the 10BASE FB M odule is the correct model by matching the model number listed on the side of the shipping carton to the model number you ordered M odel Numbers 5102M FBP 5104M FBP or 5104M FB1 Note that the product model number printed on the shipping box differs from the model number on the product The model number on the shipping box contains the prefix 3C9 Remove the module from the shipping carton Remove the module from the anti static shielding bag and inspect it for damage If the module appears to be damaged replace it in the anti static shielding bag return it to the shipping carton and contact your local supplier Keep the shipping carton and anti static shielding bag in which your module was shipped for repackaging the module for storage or shipment Record the serial number of your 10BASE FB Module A log for this and other information specific to your modules is included in the ONline SystemConcentrator Installation and Operation Guide Appendix B Slot Usage Chart Installing and Operating the Module 3 3 Quick Installation Table 3 1 outlines the steps for installing your 1OBASE FB Module Table 3 1 Quick Installation Procedures Step Procedure Section Title 1 Verify that your network complies with Chapter
25. Blinks Partition Looped fiber Remove looped cable cable 4 Blinks Remote Fault Remote device Check remote device s detects a status LEDs to identify problem problem Bad remote Try another port or device replace device Bad 10BASE FB Module Replace the module Troubleshooting 4 5 Table 4 2 Troubleshooting Using the Port Status LEDs Continued LED State Indication Possible Cause Corrective Action 5 Blinks Invalid Data Receive light Verify that received intensity too optical power level is high correct Refer to Chapter 2 Link Distances Connection Unplug the made to connection 1OBASE FL 10BASE FL is not compatible with Module this 10BASE FB Module Bad fiber Clean and reconnect connections fiber both ends Broken or Check and fix RX fiber cracked fiber link Bad remote Try another port or device replace device Bad 10BASE FB Replace the module Module 6 Blinks Low Light Low light Verify optical power Received received received is at low end of optical power budget by doing an optical power calculation If value is acceptable disable low light detection Legal Disable low light configuration detection or enable with acceptable High power at remote low light end 4 6 ONline Ethernet 10BASE FB Module Installation and Operation Guide Technical Assistance You can receive assistance for installing and troubleshooting the 1OBASE FB Module by call
26. RL into your Internet browser http www 3Com com This service features news and information about 3Com products customer service and support the 3Com latest news releases selected articles from 3TECH the 3Com award winning technical journal and more You can contact the Integrated Systems Division on the World Wide Web by entering our URL into your Internet browser http www chipcom com There are links between both WWW pages to view information from all 3Com divisions Support from Your Network Supplier If additional assistance is required contact your network supplier Many suppliers are authorized 3Com service partners who are qualified to provide a variety of services including network planning installation hardware maintenance application training and support services B 2 ONline Ethernet LOBASE FB Module Installation Guide When you contact your network supplier for assistance have the following information ready Q Diagnostic error messages Q A list of system hardware and software including revision levels Q Details about recent configuration changes if applicable If you are unable to contact your network supplier see the following section on how to contact 3Com Support from 3Com If you are unable to receive support from your network supplier technical support contracts are available from 3Com For direct access to customer service for Integrated Systems Division products in
27. S FB is a pure fiber hub that provides both backbone and to the desk connectivity 1OBASE FB Cable and Connector Specifications This section contains information on 1OBASE FB cables and connectors Use the information in the following sections to ensure that the cables and connecting hardware meet requirements You can use many types of fiber cables and connectors to link your 10BASE FB Module to your network These cables and connectors are explained in the sections that follow For proper operation use only approved cables when you install all equipment 10BASE FB Cables The fiber optic cable diameters that the 10BASE FB Module supports must meet the follow ing qualifications Q 50 125 62 5 125 85 125 or 100 140 um graded index fiber Q duplex fiber with a 150 M HzKm rating or better Note that network link distances are affected by the grade of cable you choose The quality of fiber cable varies significantly Typically measure quality in terms of the signal loss per km The less amount of loss the better the cable quality Good quality 62 5 um fiber typically has a 3 to 4 dB loss per kilometer Specifications A 7 10BASE FB Connectors The 10BASE FB Modules are available in both SM A type ST type and FC type fiber connectors for direct connection to a Fiber Ethernet LAN When you order a 10BASE FB M odule use the part numbers listed in Table A 8 for the correct connector type Table A 8 10BASE FB Module Par
28. agement Support You can manage the module through the 3Com ONdemand Network Control System You may also manage the 10BASE FB modules using terminal management through an ONline network management module Compliance The 10BASE FB M odules comply with the IEEE 10BASE FB fiber standard to provide interoperability with other standards based products Introduction 1 3 IOBASE FB Compliance The ONline Ethernet Port Switching 10BASE FB Modules and the ONline Ethernet 10BASE FB M odule are fully compliant with the IEEE 10BASE FB fiber standard The IEEE ratification of the 10BASE FB standard validates synchronous fiber Ethernet as the choice for backbone links Synchronous technology provides robust transmission for fiber Ethernet backbones Compliance with the 10BASE FB standard allows 3Com fiber modules to be compatible with Q Industry 1OBASE FB compliant products Q Existing 3Com 10BASE FB technology 3Com 10BASE B Modules implement Ethernet IEEE 802 3 physical layer functionality on a fiber optic medium Full interconnection of all devices that comply with Ethernet V2 0 or IEEE 802 3 specifications are provided including Q Minicomputers Q Engineering workstations Q PC networking servers Q Bridges Theory of Operation The 10BASE FB M odules serve mainly as network backbone links Network backbone links connect concentrators together You may also use the 10BASE FB Modules to connect directly to devices usi
29. agement commands to set these features For additional information on the available network management features refer to Q The appropriate ONline management module installation and operation guide Q ONline Management Commands Guide Enabling Ports You can enable or disable each of the four ports on the module When a port is enabled it can transmit data onto and receive data from the network to which the module is assigned Disable all unused ports on the 10BASE FB Modules to prevent the Status indicators from flashing a No Light condition To enable or disable a specific port use the following management command SET PORT slot port MODE enable slot all disable 3 14 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Selecting a Network Both models of the Port Switching Module Model Numbers 5102M FBP or 5104M FBP support Port Switching technology This feature enables you to assign each port on the module to any of three Ethernet networks or isolated on the ONline System Concentrator backplane To set a port to a network or to isolated mode use the following management command SET PORT slot port NETWORK ethernet 1 slot all ethernet_2 ethernet_3 isolated The 10BASE FB Module M odel Number 5104M FB enables you to assign the module to any of the three Ethernet networks or isolated on the ONline System Concentrator backplane To set a module to a network or to isolated
30. ance for the connecting device Determining Link Budget To ensure link integrity you should plan for worst case losses through the end to end optical connection The optical power budget represents a Worst case that assumes the transmitter is transmitting at the low end of its range When possible 3Com recommends using Normal power Designing and Expanding the Network 2 7 Table 2 3 provides the transmit optical power ranges and required receiver optical power budget levels for the 1OBASE B M odules Table 2 3 ONline 10BASE FB Module Optical Power Budget Normal Power Link Link Loss Cable Transmit Receive Optical Loss Beaui equired Size Power Power Power Required dB Used Range Range Budget dB ONline to micron dBm dBm dB ONline to 10BASE FB ONline 50 125 21 54 8 0 to 5 5 None None NA 3 0 30 0 0 20 62 5 125 17 043 0 8 0 to 10 0 None None NA 30 0 0 275 85 125 14 0 8 0 to 13 0 None 23 0 NA 3 0 30 0 0 29 100 140 11 5 3 0 8 0 to 15 5 None 25 5 NA 30 0 0 29 Table 2 4 provides 10BASE FB M odule optical power budget values for high power 2 8 ONline Ethernet 10BASE FB Module Installation and Operation Guide Table 2 5 provides information on the 10BASE FB specific optical power budget Table 2 4 ONline 10BASE FB Module Optical Power Budget High Power x Link Loss Link Loss a yos Transmit Receive Optical Requi
31. anufacture the products It is not the intent of 3Com Corporation to claim these names or trademarks as its own 3Com Artel Boundary Routing CardBoard CardFacts Galactica EtherDisk EtherLink EtherLink II EtherLink Plus LAN plex LANsentry LinkBuilder NETBuilder NETBuilder II NetFacts ONcore ONsemble ORnet Parallel Tasking SmartAgent StarBridge TokenLink TokenLink Plus TriChannel and ViewBuilder are registered trademarks of 3Com Corporation 3Com Laser Library 3Com OpenHub 3TECH FDDILink FM S G Man MultiProbe NetProbe OnDeck ONdemand ONline PowerRing Stack ack StackSystem StackW ay Star Tek SwitchCentral and Transcend are trademarks of 3Com Corporation 3ComFacts and Ask3Com are service marks of 3Com Corporation ii ONline Ethernet 1OBASE FB Module Installation and Operation Guide The 3Com Multichannel Architecture Communications System is Restricted Rig hts registered under U S Patent Number 5 301 303 T Use duplication or disclosure by the Government is subject to ATAT IS E trademark of American Telephone and restrictions as set forth in subparagraph c 1 ii of the Rights in elegrapn Company Technical Data and Computer Software clause at Banyan and VINES are registered trademarks of Banyan DFARS 252 227 7013 Systems Inc Printed on recycled paper CompuServe is a registered trademark of CompuServe Inc ProComm is a registered trademark of DATASTORM TECHNOLOGIES INC DATASTORM
32. as defined by the 802 3 specification Rule 3 Subtract the fiber equivalent distance of 420 m forthe signal entering the 10BASE T Module from Transceiver B and 50 meters for the signal exiting the LOBASE FB M odule within the same concentrator Rule 4 Subtract the fiber equivalent distance of 190 m for the signal entering the 1OBASE FB Module in the top concentrator and exiting a different port on the same 10BASE FB Module Subtract the fiber equivalent distance 800 m of the IEEE Repeater Rule 4 Note In the reverse direction a signal originating at Transceiver A loses 165 m of fiber equivalent distance when it exits the 10BASE T Module to which Transceiver B is connected and 140 meters for the signal entering the 10BASE FB M odule in the lower concentrator Because the overall fiber equivalence of the path is greater for signals going from Transceiver B to A the fiber equivalence of this path determines whether the link meets the 4200 m Ethernet link maximum Subtract the sum of intervening cable lengths 150 m 50 m 200 m 2000 m 100 m 22500 m The remainder is 4200 m 420 m 50 m 190 m 800 m 2500 m 240 m Designing and Expanding the Network 2 25 Fault Tolerant Configurations This section contains descriptions of the redundancy features built into the ONline 10BASE FB Modules You can implement link redundancy between concentrators using the port redundancy switch settings on the 1OBASEB Modules or through
33. con ONline Ethernet LOBASE FB Module Installation and Operation Guide Document Number 17 00328 5 Printed February 1996 Model Number 510M FBP 5102M FBP 5104M FB1 3Com Corporation 118 Turnpike Road Southborough MA 01772 1886 U S A 508 460 8900 FAX 508 460 8950 Federal Communications Commission Notice This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case you must correct the interference at your own expense Canadian Emissions Requirements This Class A digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations Cet appareil num rique de la classe A respecte toutes les exigences du R glement sur le mat riel brouilleur du Canada VDE Class B Compliance Hiermit wird bescheinigt dass der 510M FBP in ebereinstimmung mit den Bestimmungen der Vfg 243 1991 funkentst ert ist Der Deutschen Bundespost wurde das Inverkehrbringen dieses Geraetes ang
34. concentrator Figure 2 10 This configuration allows the backup port to automatically take over if the primary link fails Designing and Expanding the Network 2 27 Redundancy Enabled Primary cloj ee ee eee e Fiber Link N Backup ERRRRRARRRRARAR Fiber Link Redundancy Enabled 1 o o ojoejospeoeojjjojeajlejeoeoeo n z 9086 do Redundancy Disabled Figure 2 10 Redundant Fiber Backbone Configuration Note Always enable redundancy in the lower level concentrators those connecting to the central concentrators in the star wired topology In any redundant link path only one end can be designated that is activated as a redundant port pair ports 1 and 2 or ports 3 and 4 If you enable 10BASE FB M odule ports at both ends as redundant improper operation of the redundant switchover mechanism occurs see Figure 2 11 2 28 ONline Ethernet 10BASE FB M odule Installation and Operation Guide If the primary link experiences a local or remote fault except Low Light Q The backup link activates within 10 milliseconds Q The primary ports disconnect that is they do not pass data to and from the concentrator However primary port diagnostics continue to operate When the fault clears the primary port is enabled automatically Once a switchover occurs the redundancy status
35. ducts in the 3Com 10BASE FB family including the QO 3Com 10BASE FB Star Coupler Q 3Com 10BASE FB Fiber Transceiver Q 3Com Fault Tolerant 10BASE FB Transceiver The 10BASE FB M odules Q Provide up to 4 0 kilometers distance between any two concentrators Q Support network diameters up to 4 2 kilometers Q Contain built in link redundancy for fault tolerance 1 2 ONline Ethernet LOBASE FB Module Installation and Operation Guide a a Include diagnostics for troubleshooting Provide 10 M bps performance with 100 percent collision detection using CSMA CD Support 50 62 5 85 and 100 um fiber cable Are shipped with either ST SMA or FC type connectors Other benefits of the 1OBASE FB Modules include Q 3Com TriChannel Architecture The 10BASE FB M odules operate in an ONline System Concentrator with all ONline modules including Token Ring and FDDI Slot Independence You can install modules into any available slot in the ONline Concentrator This flexibility eliminates the need to shut down the network and rearrange the existing configuration of the concentrator when you install new modules into the concentrator Hot Swap Capability You can install or remove modules from the ONline System Concentrator when it is powered up without affecting the operation of any other modules in the concentrator Independent Netw orks You can assign each module to any of three independent Ethernet networks Man
36. ee 3 16 Enabling Low Light Waming sssse eee eee 3 17 Enabling Optical Power ssseee e n 3 17 Saving Module Configuration 0 ccc eee ees 3 18 Showing M odule Configuration vies eavd ey xa e oo a eee ee rs 3 18 Monitoring the Front Panel 0 0 0 cc cece n 3 19 Verifying LED and Network Assignments 000 eee eee eees 3 22 Chapter 4 Troubleshooting Troubleshooting Using the Port Activity LEDs 0 0 00 ee ua 4 2 Troubleshooting Using the Port Status LEDS 0 00 e ee aeee 4 3 Technical Assistance dede tue qur v pre a 4 7 vi ONline Ethernet LOBASE FB M odule Installation and Operation Guide Appendix A Specifications General Specifications c eode oett Seid Ny nt tdi Doodle dedi on deat end A 2 Optical Specifications osa Se as MUR OR ber oa ea ura a Robes acf A 3 Transmitter Specifications sss A 3 Receiver Specifications sse eens A4 Supported Fiber Optic Cables 0 ccc nnn A4 Fiber Optic Interface I Hn A 5 Power Requirements susuan naaa A 5 Environmental Specifications llle A 6 Mechanical Specifications s wen dea epit Odo OE PE RO eed A 6 3Com LOBASEFB Network Products ce exc E Rua A 6 10BASE FB Cable and Connector Specifications slsllssse A 7 TOBASEFB Cables 52 co bue E xx tie een lb abo eee A 7 LOBASE FB Connectors o ci nensi paaa a AOE a AOD n A 8 Connecting Fiber Cables naaa a A 8 Appendix B Tec
37. eee eee 2 12 Choosing a Network Backbone Cabling Structure 0000 2 14 Star Configuration ccc mr 2 15 Serial Configuration 0 0c ccc eee eee nes 2 16 10BASE FB Module Configurations 0 0 00 eee eee ees 2 17 Fiber Backbone Fibertothe Desk 0 cece ee tee 2 17 ONline Ethernet 10BASE FB M odule Installation and Operation Guide v Network Distance Calculation Examples 0000 aes 2 19 Fiber Backbone Unshielded Twisted Pair to the Desk 2 22 Fiber Backbone Coaxial Connection 0 0 0 ccc ee eee 2 24 Fault Tolerant Configurations scc 2 26 Configuring Ports for Fault Tolerance 0 cece eee eee 2 26 Setting Redundancy 0 0 0 cece eee eee 2 27 Implementing Total Backbone Fault Tolerance lusus 2 29 Chapter 3 Installing and Operating the Module Precautionary Procedures us a uo br e e cet dC er bla 32 Unpacking Procedures 4o 5 ist aso nies ce ee Wald x aede CE ead 33 Quick Installation sss re 34 Setting the Dip Switches ssssee e n 35 Setting Dip Switch Slo eee eens 3 7 Setting DID SWItCh S2 usted E ERE Na dD Maced eub Eus 3 9 Installing the Module 0 ccc n RII 3 10 Configuring the Module viue yee aaa RE RU wed baud ae qoos 3 13 Enabling Ports 4 ci dtm odo ette eto wae ae eae 4 3 14 Selecting a Network ccc teen eens 3 15 Enabling Port Redundancy inda oria 2450 RUE RP DEOR tei Mag
38. eiver Transceiver Figure 2 6 Network With 3 Concentrators To determine the maximum allow able link distance between Concentrators A and C 1 Use 4200 m as the maximum network diameter for a pure fiber network as defined by the 802 3 specification Rule 3 2 Subtract the fiber equivalent of the three concentrators with 10BASE FB Modules that occur on the path between the two transceivers 3 190 meters 2 570 meters Rule 4 Designing and Expanding the Network 2 19 3 Subtract the known amount of fiber cable between the two transceivers 1 km 1 km 1 km 3 km Rule 5 4 The remainder is the maximum allowable distance of the link between Concentrators A and C 4200 m 570 m 3000 m 2630 meters 5 Verify that the optical power budget is able to drive all the link distances in the example Because all link distances are only 1 km or less this is not a problem Example Network with 8 Concentrators Figure 2 7 shows a network with eight connected concentrators Use this example to determine if the distances between transceivers are all within the 4200 meter maximum network diameter restriction for Ethernet networks 100m z i 500m 1km Conc A Conc E Conc C Transceivers 500m 500m 500m 400m Transceivers _______ Cone D Conc E Conc F Conc G 100m 1km Transceivers Conc H
39. et 10BASE FB Module 5104M FB1 The modules are referred throughout this guide as the 10BASE FB M odules Information in this guide refers to all three 10BASE FB Modules listed above Differences between the modules are noted where applicable This chapter contains the following sections QO 10BASETB Module Descriptions QO 10BASE FB Compliance Q 10BASE B Theory of Operation D Compatibility With Other Ethernet Fiber Products Introduction 1 1 LOBASE B Module Descriptions The ONline Ethernet Port Switching 10BASE FB M odule is a 2 or 4 port Ethernet fiber module designed for 3Com ONline System Concentrators The ONline Ethernet LOBASE FB M odule is a 4 port Ethernet fiber module also designed for 3Com ONline System Concentrators The ONline Ethernet Port Switching 10BASE FB Module Model Number 5104M FBP is functionally identical to the ONline Ethernet 10BASE FB Module M odel Number 5104M FB1 except for the Port Sw itching Module s ability to set each port to an independent backplane network in the concentrator The 5104M FB1 is module switching only You can update the 10BASE FB Module to a port switching module by installing the ONline Ethernet 10BASE FB Upgrade Kit The 10BASE FB M odules provide Q Fiber backbone connectivity for Ethernet local area networks Q Direct fiber to the desk connectivity You can directly connect the 10BASE FB M odules to any other ONline fiber module as well as all of the pro
40. etermine the optical power budget for 62 5 125 cable 10 0 dB 2 UseTable 2 6 to determine the worst case loss for a mechanical splice 1 0 dB 2 12 ONline Ethernet 10BASE FB M odule Installation and Operation Guide 3 Use Table 2 7 to determine the worst case loss for the 62 5 125 fiber cable 1700 meters x 5 dB 28 5 dB Add the losses to determine total path loss The total path loss is 9 5 dB Because the overall power budget is 10 0 dB this leaves 5 dB to spare so the link can be made Ensure you do not overdrive a receiver that is the received optical power level is not greater than the maximum received sensitivity level of the fiber connector In this case the maximum possible transmit power 17 dB 3 0 is 14 0 dB see Table 2 3 The power loss over the link is 9 5 dB This means that the power level of the signal will drop to 23 5 dB by the time it reaches the receiver Because the maximum receiver sensitivity is 8 0 dB there is no overdrive problem Example 2000 Meter Fiber Link Through Two Patch Panels In this example two ONline concentrators are separated by 2000 meters of fiber cable with two patch panels between them 2000 meters a 2 0 km Fiber Cable 10 0 dB loss worst case using 5 0 dB km loss fiber cable Two ST Patch Panels 1 5 dB loss worst case Path Loss 11 5 dB Figure 2 2 2000 Meter Fiber Link Through Two Patch Panels To calculate the maximum link distance
41. ezeigt und die Berechtigung zur Ueberpr efung der Serie auf Einhaltung der Bestimmungen einger eumt Einhaltung mit betreffenden Bestimmugen kommt darauf an dass geschirmte Ausfuehrungen gebraucht werden Fuer die Beschaffung richtiger Ausfuehrungen ist der Betreiber verantwortlich This is to certify that the 5 10M BP is shielded against radio interference in accordance with the provisions of Vfg 243 1991 The German Postal Services have been advised that this equipment is being placed on the market and that they have been given the right to inspect the series for compliance with regulations Compliance with applicable regulations depends on the use of shielded cables The user is responsible for procuring the appropriate cables EN55022 CISPR22 Compliance This equipment conforms to the Class A emissions limits for a digital device as defined by EN55022 CISPR22 VCCI Class 1 Compliance i E HUBERE TS ES CENE LI i Hh Bho ee ee ee Ce I Km xc E NE NE ITbUIS 3 T r gi cL C SETTE E r PL SZBXCUTEZENRRHGICG4Subd EEGSN S ligni This equipment is in the 1st Class category information equipment to be used in commercial or industrial areas and conforms to the standards set by the Voluntary Control Council for Interference by Information Technology Equipment aimed at preventing radio interference in commercial or industrial areas Consequently when the equipment is used in a residential area or in an adjace
42. her countries Other brand and product names may be registered trademarks or trademarks of their respective holders ONline Ethernet 10BASE FB M odule Installation and Operation Guide iii iv ONline Ethernet 10BASE FB Module Installation and Operation Guide Contents How to Use This Guide UCONN CO sueta ptt ot sere Le tori rp ar eot RA NR DE xiii Str ct re of This GU Emesa iiia doe xeu RR XR RR RR Ra xiv Document Conventions sasaaa a aaa RH us XV Related Documents 1 eso era de aee t ak dtp de eae ay xvi 3Com Documents ouaaa ees xvi Reference Documents pra aia a aa aa rs xvii Chapter 1 Introduction 10BASE FB Module Descriptions 0 ccc eee 1 2 lOBASETB Compliance 0 ete mm 14 Theory of Operation 0 ce m 14 Compatibility With Other Ethernet Fiber Products 0000 1 6 Chapter 2 Designing and Expanding the Network Understanding the General Rules naana c eee ee eee 2 2 Rules for Configuring a Network 0 ccc eee eee 2 2 Equivalent Fiber Distances 0 0 cece nn 2 5 Determining Maximum Fiber Link Distances anaana 2 6 Calculating Maximum Link Distance 0 000 c cece es 2 7 Determining Link Budget issseee e I 2 7 Atten atiori ae rea otc i voa te hae oh a A Dude digi as AoE LR o det 2 10 SDIICITIg m 2 ata wee Soon A E A at e MES 2 10 Optical Fiber LOSS i rete wa ea b eR Ald ER p db das 2 11 Maximum Link Distance Calculation 0 00
43. hes These switches do not perform any operation 3 6 ONline Ethernet 10BASE FB Module Installation and Operation Guide Setting Dip Switch S1 The S1 dip switch on the 10BASE FB Modules have 10 switches These switches allow you to enable or disable redundancy between ports 1 amp 2 and 3 amp 4 The S1 dip switch on the Q Port Switching LOBASE FB M odule allows you to assign each port to a backplane channel Q Module Switching 10BASE FB Module allows you to assign the module to a backplane channel For a definition of each dip switch function refer to the Configuring the Module section Table 3 2 lists the functions and settings for switches 1 and 2 Table 3 2 Dip Switch S1 Settings for Switches 1 and 2 Factory Switch Setting Switch Label Function Default Off On 1 REDN12 Enable disable disable disable enable redundancy between ports 1 and 2 2 REDN34 Enable disable disable disable enable redundancy between ports 3 and 4 Installing and Operating the Module 3 7 Table 3 3 lists the functions and settings for switches 3 through 10 Table 3 3 Dip Switch S1 Settings for Switches 3 to 10 CHAO CHA1 Channel Selection Switch Setting On On 1 factory default Off On 2 On Off 3 Off Off Isolated Port Switching Module Port Operates independent of any backplane channel Module Switching M odule Module operates independent of any backplane chan
44. hnical Support Index Ondine Technical Support sssssee e n B 1 Email Technical Support naron t aoa eee eens B 2 World Wide Web Site nuunuu eee eens B 2 Support from Your Network Supplier 0 0 ccc eee ee ees B 2 Support from 3Com eee as B 3 Returning Products for Repair ee eee ees B 4 Accessing the 3COM MIB sssssse e n B4 SCOM Technical Publications cscs a S VR QURE REA ER DURER APR ae B 5 ONline Ethernet 10BASE FB Module Installation and Operation Guide vii viii ONline Ethernet LOBASE FB Module Installation and Operation Guide Figures Figure 1 1 Figure 2 1 Figure 2 2 Figure 2 3 Figure 24 Figure 2 5 Figure 2 6 Figure 2 7 Figure 2 8 Figure 2 9 Figure 2 10 Figure 2 11 Figure 2 12 Figure 3 1 Figure 3 2 Figure 3 3 Figure 34 1OBASE FB Module Connections 00 eee ees 1700 Meter Fiber Link With Mechanical Splice 2000 Meter Fiber Link Through Two Patch Panels Star Wiring Configuration 0 0 00 es Serial Configuration Using 1OBASE FB Modules AllFiber Network 0 0 cece nes Network With 3 Concentrators 00 cess Network Configured With 8 Concentrators Sample Configuration Distance Calculation Thin Ethernet Segment Connected to an ONline TOBA SEB Module oc uso Ce Be ew RE wi Sees ties Redundant Fiber Backbone Configuration Total Backbone Fault Tolera
45. indicators blink Each redundancy status LED located beneath the Activity LEDs Q Is off If you disable redundancy Q Ison If you enable redundancy and both ports are operational Q Blinks If a switchover occurs due to a link failure Implementing Total Backbone Fault Tolerance You can add a backup ONline System Concentrator to provide total backbone tolerance and link redundancy for your backbone network As shown in Figure 2 11 if the primary concentrator or any primary links fail the backup concentrator takes over In this configuration Q One port on the 10BASE FB Module connects to the primary concentrator Q The other port connects to the backup concentrator You must also have a direct connection between the two concentrators Designing and Expanding the Network 2 29 Primary Fiber Enk Redundancy Enabled 4 ojejejejojejej jeje pje Backup Fiber Link olallololololololololololo oala Redundancy Enabled ererererepqrrprerjerrepije 5 e Ei 2 Q 29 000085 D Otoaa 000 Redundancy Disabled Figure 2 11 Total Backbone Fault Tolerant Configuration Example Fiber Network with 3 Concentrators and a Fourth Concentrator in Full Red
46. ing Switchover has taken place or there has been a link failure Installing and Operating the Module 3 21 Verifying LED and Network Assignments Once you install the module verify its operation through the front panel of the ONline Controller Module The Controller M odule is equipped with an LED check button on the front panel Use the LED check buttonto Q Verify LED operation Q Verify network channel assignment When you press this button the Controller M odule initiates a test to all modules in the concentrator All LEDs should respond by lighting continuously for approximately five seconds Any LED that does not light is defective After the 5 seconds elapse the diagnostic continues with a network channel check of all modules Each Status LED should respond by blinking the number of times to correspond with the network to which the module is assigned The network check sequence repeats 5 times Table 3 6 explains the network check codes Table 3 6 Network Check Codes LED State Network Configuration 1 Blink Module or port is configured for network 1 2 Blinks Module or port is configured for network 2 3 Blinks Module orport is configured for network 3 Off Module or port is isolated operates independent of any netw ork Troubleshooting This chapter describes fault conditions and troubleshooting procedures for the ONline Ethernet 10BASE FB Modules This chapter contains the following
47. ing either your 3Com reseller or 3Com Technical Support Be prepared to supply a representative with the following information a a a Description of the problem Steps you have taken to try and correct the problem Type and software version of the ONline network management module being used Version of software installed on your 1OBASE FB M odule Status of the front panel LEDs Configuration of your concentrator you may find it helpful to refer to the Slot Usage Chart in Appendix B of the ONline System Concentrator Installation and Operation Guide for a record of this information Refer to Appendix B for instructions on contacting Technical Support for your product Troubleshooting 4 7 Specifications This appendix lists specifications for the Port Switching 1OBASE FB Module and the 10BASE FB Module Specification differences between the Port Switching 10BASE FB M odule and the 10BASE FB M odule are indicated Specifications for the modules include a 0D D D D D DO D General Specifications Optical Specifications Power Specifications Environmental Specifications M echanical Specifications M iscellaneous Specifications 3Com 10BASE FB Network Products 10BASE FB Cables and Connectors Specifications Specifications A 1 General Specifications Table A 1 lists general specifications for the 1OBASE FB Module Table A 1 General Specifications 10BASE FB Module Model Numbers 5
48. is the sum of both the incoming and outgoing module port signals Different products how ever have different equivalent distances Table 2 2 lists the equivalent fiber distance of 3Com ONline LAN products Table 222 Equivalent Fiber Distances of LAN Products Equivalent Fiber FAN Product Distance meters ONline Ethernet 10BASE FB M odules 190 5104M FB1 5102M FBP 5104M FBP Incoming signal to fiber port 140 Outgoing signal from fiber port 50 ONline Ethernet 10BASE FL Module 5104M L1 560 Incoming signal to fiber port 330 Outgoing signal from fiber port 230 ONline Ethernet 10BASE T M odule 5108M TP 585 Incoming signal to TP port 420 Outgoing signal from TP port 165 ONline Ethernet 50 Pin Module 585 5112M TPL 5112M TPPL Incoming signal to TP port 420 Outgoing signal from TP port 165 ONline Ethernet 24 Port Module 5124M TPCL 585 Incoming signal to TP port 420 Outgoing signal from TP port 165 Designing and Expanding the Network 2 5 Table 222 Equivalent Fiber Distances of LAN Products Continued Equivalent Fiber PAN product Distance meters ONline Ethernet Repeater Module 5102M AUIF 800 Incoming signal to AUI port 600 Outgoing signal from AUI port 200 ONline Ethernet BNC M odule 5106M BNC 900 Incoming signal to BNC port 450 Outgoing signal from BNC port 450 ONline Ethernet Transceiver M odule 5103M AUIM 0 3Com 10BASE FB Sta
49. l Thus point to point link distances are limited to a maximum of 4 2 km This section describes how to define total network size based on the limits of IEEE 802 3 collision detection This section describes the following scenarios Q Fiber Backbone Fiber to the Desk Q Fiber Backbone Unshielded Twisted Pair to the Desk Q Fiber Backbone Coaxial Connection Fiber Backbone Fiber to the Desk When designing an all fiber network Figure 2 5 keep the following rules in mind 1 Limit the longest path from one fiber optic transceiver to another to 4 2 km 2 6 miles 2 Each 10BASE FB Module in a serial path between two transceivers reduces the maximum cable distance between the transceivers by 190 meters 623 feet The equivalence is Q 140 meters for signals that externally enter a 10BASE FB M odule port Q 50 meters for signals that internally enter a TOBASE FB M odule from the concentrator backplane For simplicity use 190 meters per 10BASE FB Module in the path when calculating fiber equivalent distances Designing and Expanding the Network 2 17 3 AUlcables of up to 50 meters are not included in Rule number 1 thus the total network diameter betw een fiber Ethernet nodes can be 4110 meters 4200 m 190 m 50 m 50 m 24110 m through a single concentrator x
50. m Fiber Ethernet network diameter to less than 4200 meters through a device on the network shrinks the network diameter by approximately 200 meters of fiber cable This reduction is known as equivalent distance Table 2 2 lists the equivalent fiber distances for 3Com ONline LAN products Designing and Expanding the Network 2 3 Table 2 1 Basic Network Rules Continued Rule Definition 5 Assume that one meter of coaxial or twisted pair cable is equal to one meter of fiber cable Recommendations Notes This is a conservative equivalence One meter of fiber is actually equal to 1 1 meters of coaxial For simplicity assume one meter 6 Verify that the 10BASE B link distances do not exceed the limits imposed by the optical power budget In general on 62 5 cable use up to 4000 meters point to point using the 10BASE FB Modules If you have poor quality cable or numberous patch panels you may have to sacrifice some distance Some older Ethernet fiber optic products are less powerful than ONline 10BASE FB M odule optics When connecting to these products remember that they determine the maximum point to point distance 7 When in doubt use a bridge If you are not certain you have exceeded acceptable network distances use a bridge to extend the network 2 4 ONline Ethernet 10BASE FB Module Installation and Operation Guide Equivalent Fiber Distances Equivalent fiber distance
51. mode use the following management command SET MODULE slot NETWORK ethernet_1 ethernet 2 ethernet 3 isolated Note The dip switch settings on the module refer to the backplane connection as the channel connection The channel setting and the network setting are the same Modules or ports set to the same network communicate with each other Installing and Operating the Module 3 15 Enabling Port Redundancy You can enable port redundancy in one of the following ways Q If you have network management you can enable or disable main port redundancy between any two ports on the 1OBASE FB M odule Q If you do not have management you can use the dip switches on the module to configure redundancy between ports 1 and 2 on the module or ports 3 and 4 For example when you enable redundancy 1 Port 1 becomes the primary link and port 2 is the redundant link 2 If the primary link port 1 fails the redundant link port 2 is engaged automatically thus preventing a network failure 3 When you disable redundancy each port works independently Note Enabling port redundancy for two ports automatically enables the ports even if the ports were previously disabled The redundancy status LEDs located between the sets of port LEDs and the port connectors on the 1OBASE FB Module are Q Off When you disable redundancy default setting Q On When you enable redundancy To set redundancy betwee
52. n ports use the following management command SET PORT slot port MODE REDUNDANT slot port To turn off redundancy between ports use the MODE NON REDUNDANT option Redundancy configurations are shown in Chapter 2 Designing and Expanding the Network 3 16 ONline Ethernet 10BASE FB M odule Installation and Operation Guide When you set redundancy between two ports on the same 1OBASE FB Module and the primary port and the redundant port experience a link failure simultaneously and you disable redundancy Q The primary port is disabled Q The redundant port is enabled Enabling Low Light Warning You can enable or disable low light warning for all ports on the module When you enable low light warning the Status LED of the port which detects the low light condition blinks 6 times A low light condition is defined as power received between 26 0 dBm and 30 0 dBm peak power You may have a legal configuration in which low light is acceptable to span a long distance In this case you may want to disable the low light warning so the Status LED does not blink for this connection To enable or disable low light warning for a port use the following management command SET PORT slot port LOW LIGHT WARNING enable slot all disable Enabling Optical Power High power optics are standard in all 3Com ONline fiber optic products The higher power allows you to directly connect buildings as far as 4 0 kilometers apart with
53. nel 3 8 ONline Ethernet 10BASE FB Module Installation and Operation Guide Setting Dip Switch S2 Dip switch S2 on the 10BASE FB Modules have 10 switches These switches allow you to Q Enable or disable any of the four ports Q Enable high or normal optical power for each port Q Enable or disable low light detection for the module Table 3 4 lists the functions and settings for dip switch S2 Switch 10 is not used Table 3 4 Dip Switch S2 Settings Factory Switch Setting Switch Label Function Default Off On 1 PlHIPWR Port1 Highor disable disable enable Normal power normal 2 P2 HIPWR Port2Highor disable disable enable Normal power normal 3 P3 HIPWR Port3Highor disable disable enable Normal power normal 4 P4 HIPWR Port4 Highor disable disable enable Normal power normal 5 P1 EN Enable disable enable disable enable Port 1 6 P2 EN Enable disable enable disable enable Port 2 7 P3 EN Enable disable enable disable enable Port 3 8 P4 EN Enable disable enable disable enable Port 4 Installing and Operating the Module 3 9 Table 3 4 Dip Switch S2 Settings Continued Factory Switch Setting Switch Label Function Default Off On 9 LOL EN Enable disable enable disable enable module Low Light Detection 10 Not Used Installing the Module You do not need to power down the ONline System Concentrator to install
54. ng the QO 3Com 5101T B Transceiver O 3Com 5102T FBFT Fault Tolerant Transceiver 1 4 ONline Ethernet LOBASE FB Module Installation and Operation Guide Figure 1 1 illustrates a configuration using fiber transceivers and the 10BASE FB M odules to connect concentrators and devices 3rd Floor Concentrator DgsuuiEEd Oj Our bkumE O eje e elajerel elec Fiber Transceiver B E M allen lelala ica Slc alola Unshielded Twisted Pair AES 1st Floor Concentrator as z Fiber aleisIblalaio elala sels aaa Figure 1 1 10BASE FB Module Connections Introduction 1 5 Compatibility With Other Ethernet Fiber Products The 10BASE FB M odules are compatible with the 3Com products outlined in Table 1 1 Table 1 1 10BASE FB Module Compatibility 3Com Product Part Number 10BASE FB Star Coupler 9308S FB 10BASE FB Transceiver 5101T FB Fault Tolerant LOBASE FB Transceiver 5102T FBFT From the backplane interface you can also connect the 10BASE FB M odules to other Ethernet modules on the same network ONline Ethernet LOBASE FL M odule Model Number Caution The 10BASE FB Modules are not compatible with the 5104M L1 The 4 port10BASE FL Module faceplate is similar to the 1OBASE FB M odules but the two modules cannot comm
55. nt Configuration Fiber Network With 3 Concentrators iss 10BASE FB Module Dip Switch Locations Installing the LOBASE FB Module essere 1OBASE FB Module Connection 0 cee eee ees 10BASE FB Port Switching M odule Faceplate and ONline System Concentrator 0 00 ccc eee eee ONline Ethernet 10BASE FB M odule Installation and Operation Guide ix x ONline Ethernet 10BASE FB Module Installation and Operation Guide Tables Table 1 1 Table 2 1 Table 2 2 Table 2 3 Table 2 4 Table 2 5 Table 2 6 Table 2 7 Table 2 8 Table 3 1 Table 3 2 Table 3 3 Table 3 4 Table 3 5 Table 3 6 Table 4 1 Table 4 2 10BASE FB Module Compatibility isses 1 6 Basic Network Rules 0 cee nn 2 2 Equivalent Fiber Distances of LAN Products 2 5 ONline 10BASE FB Module Optical Power Budget NormalPower lesse ns 2 8 ONline 10BASE FB M odule Optical Power Budget High POW Chis ka Ban pa RUEDA be a ana 2 9 10BASE FB Optical Power Budget 0 0000 2 9 Connector and Splice Insertion Loss 00000 2 11 Typical Fiber Loss Characteristics 00e eee 2 11 Fiber Equivalent Distances Between Transceivers 2 21 Quick Installation Procedures 0 cece eae 34 Dip Switch S1 Settings for Switches land2 3 7 Dip Switch S1 Settings for Switches 3 to 10 3 8 Dip Switch S2
56. nt area radio interference may be caused to radio and TV receivers and so on Read the instructions for correct handling Fiber Cable Classification Notice Use this equipment only with fiber cable classified by Underwriters Laboratories as to fire and smoke characteristics in accordance with Section 770 2 b and Section 725 2 b of the National Electrical Code UK General Approval Statement The ONcore Switching Hub ONline System Concentrator and ONsemble StackSystem Hub are manufactured to the International Safety Standard EN 60950 and are approved in the UK under the General Approval Number NS G 12345 100003 for indirect connection to the public telecommunication network Disclaimer The information in this document is subject to change without notice and should not be construed as a commitment by 3Com Corporation 3Com Corporation assumes no responsibility for any errors that may appear in this document Copyright Statement 91996 by 3Com Corporation Printed in U S A All rights reserved The information contained herein is the exclusive and confidential property of 3Com Corporation No part of this manual may be disclosed or reproduced in whole or in part without permission from 3Com Corporation Trademarks and Patents Because of the nature of this material numerous hardware and software products are mentioned by name In most if not all cases these product names are claimed as trademarks by the companies that m
57. ork QO You can easily expand the size of your network Figure 2 3 shows an example of a Star wired configuration Unshielded Twisted Pair Building 2 Unshielded Twisted Pair Il Unshielded Twisted Pair Fiber Backbon m m T T o ol i tj o D T T ol T a UE Unshielded Twisted Pair Figure 2 3 Star Wiring Configuration Designing and Expanding the Network 2 15 Serial Configuration Use a serial configuration shown in Figure 2 4 for smaller diameter networks that are not expected to grow Serial configurations reduce the overall network diameter by 190 meters for each concentrator in any path aie oiojo alaie eleielolo Oy ot ololololo ole ololololololololoele Figure 2 4 Serial Configuration Using 10BASE FB Modules 2 16 ONline Ethernet 10BASE FB M odule Installation and Operation Guide 1LOBASE FB Module Configurations The theoretical maximum diameter of an all fiber Ethernet network is limited to 4 2 km as defined by the 51 2 usec slottime that is specified for the round trip delay budget set by the IEEE 802 3 CSMA CD protoco
58. out the additional expense of signal boosting equipment However it is necessary to set a port to the normal power setting when it is connected to a 3Com 10BASE FB fiber optic product Each port on the Port Switching TOBASE FB module can be set to high or normal power through the dip switches or through management commands To set a port to high or normal power use the following management command SET PORT slot port HIGH_POWER enable slot all disable Installing and Operating the Module 3 17 The 10BASE FB M odule Switching M odule can be set to high or normal power through the dip switches see Table 3 4 Saving Module Configuration To save the module and port settings to management module memory use the following command SAVE MODULE PORT Showing Module Configuration You can display status information about the LOBASE B Modules using the following commands Q SHOW MODULE SHOW M ODULE VERBOSE Q Q SHOW PORT Q SHOW PORT VERBOSE For example the following command displays detailed information about port 1 on the Port Switching 10BASE FB Module in slot 8 of the concentrator ONline show port 8 1 verbose ENTER Port Display for Module 5104M FBP Port ode Status etwork General Information 08 01 ENABLED OKAY ETHERNET 2 Network Dip Setting ETHERNET 2 Mode Dip Setting ENABLED Low Light Warning ENABLED Low Light Warning Dip Setting
59. ploy the use of patch panels to manage expansion and topological changes A typical patch panel consists of a set of female to female bulkhead barrel connectors used to connect male fiber connectors on both sides The optical power loss through a patch panel therefore includes two connectors and a bulkhead If a fiber optic cable breaks the break is usually fixed by splicing the broken ends together Use one of the following types of splicing methods Q Fusion A fusion splice usually offers lower power loss but the fusion equipment is often bulky and costly Q Mechanical A mechanical splice can be conveniently used in the field when a fusion splice is not available If a repair is made make sure that the fiber cable still meets the power loss guidelines 2 10 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Table 2 6 shows the range of loss and the typical loss as a result of splices Table 2 6 Connector and Splice Insertion Loss Connector Type Range of Loss Per Pair dB irc SMA Patch Panel 1 0 to 3 0 2 0 ST or FC Patch Panel 0 1 to 0 75 0 5 Typical Loss Splice Type Range of Loss dB dB Fusion 0 01 to 0 1 0 05 M echanical 0 2 to 1 0 0 5 Optical Fiber Loss Even though fiber optic cable can carry light signals over a long distance optical power loss is a significant factor Check your cable manufacturer s rating of the loss characteristic of your fiber cable to determine the act
60. provide High power optics You may need to reconfigure one or more of these switches depending on your configuration requirements The dip switch settings for the 1OBASE FB M odules are ignored if an ONline management module is installed in the concentrator For this reason use the management commands rather than the dip switches to configure the 10BASE FB Modules If you have an installed management module install the LOBASE FB M odule first and then refer to the Configuring the Module section in this chapter for more information This section describes Q Setting Dip Switch S1 Q Setting Dip Switch S2 Installing and Operating the Module 3 5 1OBASE FB Port Switching Module 1 Redun 3 amp 4 Redun 1 amp 2 P si Sepi Channel Select mm 12345 19 Port 1 Port 3 Portt2 Port4 JOBASE FB Module Switching Module 1 Ghannel Select for Module High Port Low Light Power Enable x eal Test ort ON g OFF A 1 2 P Port Channel CHAO CHAi 1 On 2 Off On Isolated Off Backplane DIN Connector Figure 3 1 10BASE FB Module Dip Switch Locations Note The Port Switching 10BASE FB Module is also available as a two port module M odel Number 5102M FBP for installations that do not require four fiber ports When using the switches for the two port module all switches operate identical to the switches on the four port module with the exception of port 3 and port 4 switc
61. r 1 2 FCC notice ii FDDI Management Module 3 13 Features Hot Swap Capability 1 3 Slot Independence 1 3 Standard Compliance 1 3 Fiber Cables A 7 Connector and Splice Loss 2 7 2 11 Connectors A 8 Installing 3 11 Link Budget 2 7 Loss Characteristics 2 11 Fiber Connector Types 1 3 Fiber Equivalent Distances Between Transceiver 2 21 Fiber Link Distances 2 6 Fiber Module Configurations 2 17 Fiber Optic Cable Bend Radius 3 12 Front Panel LEDs 3 19 Monitoring 3 19 2 Index G Grounding Techniques 3 2 H Hot Swap Capability 1 3 IEEE 802 3 CSMA CD Protocol 2 17 Installing the Module 3 1 3 10 Connecting Fiber Cables 3 11 Grounding Techniques 3 2 Precautions 3 2 L LEDs Activity 3 21 Interpreting 3 21 Port Status 3 21 Redundancy 3 21 Verifying Operation 3 22 Link Budget 2 7 Low Light Dip Switch Setting 3 10 Management Command Syntax 3 17 Warning 2 14 Low Light Condition 3 17 M Management Commands SAVE MODULE PORT 3 18 SET PORT HIGH POWER 3 17 SET PORT LOW_LIGHT WARNING 3 17 SET PORT MODE 3 14 SET PORT MODE REDUNDANT 3 16 SET PORT NETWORK 3 15 SHOW MODULE 3 18 SHOW PORT 3 18 MIB B 4 Module Configuration Saving 3 18 Showing 3 18 Network Configuration Rules 2 2 Network Selection Dip Switch Setting 3 8 network supplier support B2 No Light Condition 3 14 O ONdemand Network Control System 1 3 Management Support 1 3 ONline Controller Module 3 2
62. r Coupler 9308S FB 180 10BASE FB Star Coupler 9314S 180 IEEE Repeater 800 Determining Maximum Fiber Link Distances This section describes how to calculate the maximum allowable link distances between two fiber ports To do this you must know the following information Q 10BASE FB optical power budget D D D Fiber cable diameter for example 50 micron 62 5 micron Fiber cable light loss km for example 3 dB loss km Number of patch panel connections and link splices 2 6 ONline Ethernet 10BASE FB Module Installation and Operation Guide The following tables assist you in obtaining this information Q Table 2 3 Lists the optical power budget for the 10BASE FB M odule Q Table 2 6 List typical losses for connector and splice insertion loss Q Table 2 7 Lists typical losses for various fiber cables Calculating Maximum Link Distance To calculate the maximum link distance allow ed l Determine the optical power budget for the 10BASE FB port Table 2 3 2 Subtract the optical power loss due to patch panels and splices Table 2 6 from the optical power budget for the 10BASE FB port 3 Subtract the dB loss km rating of the fiber cable Table 2 7 from the remainder of step 2 If the result is greater than 0 the link distance is valid 4 If the device connecting to the 10BASE FB Module does not have the same optical budget as the TOBASE FB Module you must also calculate the maximum link dist
63. re this configuration is legal Designing and Expanding the Network 2 23 Fiber Backbone Coaxial Connection When connecting Thick or Thin Ethernet segments to an ONline network use an QO ONline Ethernet Bridge M odule Q ONline Ethernet Repeater Module Q External bridge or repeater If you use a repeater or the ONline Ethernet Repeater Module remember that these products have an equivalent fiber distance of 800 meters Example Connecting a Thin Ethernet 10BASE2 Segment Figure 2 9 shows an example of a Thin Ethernet segment connected to an ONline System Concentrator using an IEEE Repeater Fiber Backbone Fiber Coaxial ele Transceiver Transceiver IEEE A Repeater 150 m Thin Ethernet d TTT Te mam C d n i lo lo o 7 d 2000 m 50m SS SS SS SESE Se5p Transceiver Cable UTP Transceiver Model Number 5101T TP a B CECT ET aa o o a o g g 100 m_ Figure 2 9 Thin Ethernet Segment Connected to an ONline 10BASE B Module 2 24 ONline Ethernet 10BASE FB M odule Installation and Operation Guide To determine if the configuration meets Ethernet distance limitations for Transceivers A and B 1 Use 4200 m asthe maximum network diameter for a pure fiber network
64. red i Tia Used Power Power Power dB ONlineto micron dBm dBm Budget ONlineto 10BASE F dB ONline B 50 125 14 25 8 0to 13 5 None gt 2 0 NA 0 20 2 25 30 0 62 5 125 10 0 8 0 to 17 75 gt 0 25 gt 6 25 NA 2 25 30 0 0 275 85 125 7 0 8 0 to 20 75 gt 3 25 gt 9 25 NA 0 29 2 25 30 0 100 140 4 5 t 8 0 to 23 25 gt 5 75 gt 11 75 NA 0 29 2 25 30 0 Table 2 5 10BASE FB Optical Power Budget Cable Size Used es Receive Optical micron ower Power Power dBm dBm Budget dB 50 125 NA 0 20 20 0 1 0 14 0 to 29 0 8 0 62 5 125 NA 0 275 15 1 1 0 14 0 to 29 0 12 9 85 125 NA 0 29 13 1 1 0 14 0 to 29 0 14 9 100 140 NA 0 29 11 6 1 0 14 0 to 29 0 16 4 Designing and Expanding the Network 2 9 Attenuation It is possible for receivers to receive too much light when Q Using 85 125 and 100 140 micron fiber cables Q Ports are close together on a link Receivers can also receive too much light on 62 5 micron fiber and High power on the 10BASE FB M odules when Q Connecting to an TOBASE FB product 6 25 dB loss required Q Connecting to another 10BASE FB M odule 25 dB loss required In these two situations switch the IOBASE FB M odule to Normal power In all of the cases listed above some attenuation is required to prevent this problem This attenuation is covered by Q A moderate link length Q The fiber optic connectors Splicing Many fiber optic installations em
65. s Rules for Configuring a Network This section outlines the network rules and recommendations for building an Ethernet network For more hardware specific information on the 10BASE FB refer to Appendix A Table 2 1 Basic Network Rules Rule Definition Recommendations Notes 1 Use 10BASE FB as the Use 62 5 micron cable to backbone medium conform with the IEEE 10BASE F and ANSI FDDI standards Use ST type connectors 2 Wire the backbone ina Lay extra fiber cables The extra star topology to isolate cost is small and you will need faults them as your network grows 2 2 ONline Ethernet 10BASE FB Module Installation and Operation Guide Table 2 1 Basic Network Rules Continued Rule Definition Recommendations Notes 2 Wire the backbone ina The star topology conforms to con t star topology to isolate FDDI wiring Run at least two faults fiber strands to each backbone connection 3 Do not exceed the The 4200 meters is the maximum Fiber Ethernet maximum distance between network diameter of any two transceivers on the 4200 meters of fiber network cable The 4200 meters does not include the transceiver cable that connects a device with an external transceiver Transceiver cable can extend up to 50 meters Thus total netw ork diameter can be as much as 4300 meters 4200 m 4 2 50 m between any two modes 4 Certain LAN products Each microsecond delay on the network shrink the maximu
66. t Numbers Port Switching Connector Type 10BASE FB Fiber 10BASE FB Fiber Module Module STtype 5104M FBP ST 5104M FB1 ST 5102M FBP ST SM A type 5104M FBP SMA 5104M FB1 SMA 5102M FBP SMA FC type 5104M FBP FC 5104M FB1 FC 5102M FBP FC Connecting Fiber Cables If you use a concentrator in your network setup connect cables first at the active concentrator location Refer to the ONline System Concentrator Installation and Operation Guide for more information about the concentrator connections and configuration rules A 8 ONline Ethernet 1OBASE FB Module Installation and Operation Guide Technical Support 3Com provides easy access to technical support information through a variety of services This appendix describes the following services a On line Technical Support Support from Your Network Supplier Support from 3Com Returning Products for Repair Accessing the 3Com MIB D D D D UD 3Com Technical Publications On line Technical Support 3Com offers worldwide product support through the following on ine systems Q Email Technical Service Q World Wide Web Site Technical Support B 1 Email Technical Support You can contact the Integrated Systems Division formerly Chipcom on the Internet for technical support using the e mail address techsupp chipcom com World Wide Web Site You can access the latest networking information on the 3Com World Wide Web site by entering our U
67. t on an anonymous FTP server Updates to these M IBs are released as new 3Com products are introduced To access Internet versions 1 FTPto ftp chipcom com 151 104 9 65 2 Enterthe login name anonymous B 4 ONline Ethernet 1OBASE FB Module Installation Guide 3 Enter your full Internet e mail address as the password for example 3doe8 company com 4 Change to the mib or schema directory using the cd pub mibs or cd pub mibs schemas command 5 To view the 3Com MIB OID or schema entries enter the dir command Q To pause the display press CTRL S Q To continue the display press CTRLQ 6 Copy the M IB OID or schema files to your current directory using the appropriate command for example get chipcom mib 7 To exit the FTP session invoke the quit command 3Com Technical Publications If you have comments or questions on 3Com Integrated Systems Division Technical Publications documents please contact the Technical Publications group by FAX 508 229 1551 Technical Support B 5 Numerics 10BASE B Compliance 1 4 Standard 1 4 10BASE FB Fiber Transceiver 1 2 10BASE FB Links Determine M aximum Distance 2 6 10BASE FB Module Assign a Network 3 15 Configuring 3 13 Descriptions 1 2 Enable and Disable Ports 3 14 Fault Tolerant Configuration 2 26 Features 1 2 Fiber Backbone Coaxial Connection 2 24 Fiber Backbone Fiberto the Desk 2 17 Fiber Backbone UTP to the Desk
68. ters this configuration is not legal When designing a redundant network be sure to consider the backup route distance Designing and Expanding the Network 2 31 Installing and Operating the Module This chapter describes the installation procedures for the Q ONline Ethernet Port Switching 10BASE FB Module Q ONline Ethernet 1OBASE FB Module For your convenience a quick reference installation chart is included This chapter includes the following sections Q Precautionary Procedures Unpacking Procedures Quick Installation D D LCD Setting the Dip Switches Installing the Module Configuring the Module Showing Module Configuration Monitoring the Front Panel D D D D O Verifying the LEDs and Network Assignments Installing and Operating the Module 3 1 Note Read the precautionary procedures before unpacking the module Precautionary Procedures Electrostatic discharge ESD can damage static sensitive devices on circuit boards Follow these precautions when you handle the 10BASE FB Modules Q Do not remove the board from its anti static shielding bag until you are ready to inspect it Q Handle the board by the faceplate Q Use proper grounding techniques when you install a LOBASE FB Module These techniques include Using a foot strap and grounded mat or wearing a grounded static discharge wrist strap Touching the grounded rack or other source of ground just before you handle a 10B
69. tion Guide Explains how to install operate and manage the 3Com ONline 6 Slot System Concentrator ONline Ethernet M anagement M odule Installation and Operation Guide Describes how to install the ONline Ethernet Management M odule in the ONline System Concentrator and explains the LEDs on the module faceplate This guide also provides instructions for connecting a terminal to the module and describes the management commands necessary to perform management tasks on the concentrator and on remote devices ONline Management Commands Guide Provides an alphabetized reference resource describing all ONline management commands For a complete list of 3Com documents contact your 3Com representative Reference Documents The following documents supply related background information Case J Fedor M Scoffstall M and J Davin The Simple Network Management Protocol RFC 1157 University of Tennessee at Knoxville Performance Systems International and the MIT Laboratory for Computer Science M ay 1990 Rose M and K McCloghrie Structure and Identification of Management Information for TCP IP based Internets RFC 1155 Performance Systems International and Hughes LAN Systems M ay 1990 ONline Ethernet 10BA SE FB M odule Installation and Operation Guide xvii Introduction This chapter introduces you to the Q 3Com ONline Ethernet Port Switching 10BASE FB Modules 5102M FBP and 5104M FBP Q 3Com ONline Ethern
70. tuted In the command above brackets identifiers substitute rem name with the name of the remote machine Capitalized text in plain brackets Keyboard entry by the user Type your password and press ENTER Italics Text emphasis document titles Ensure that you press the Apply button after you add the new search parameters ONline Ethernet 10BASE FB M odule Installation and Operation Guide xv Convention Indicates Example Note A Note The Note Use STP lobe information is cables for your system important Caution A Caution A Caution Do not put condition may your installation damage diskettes on a software or magnetic surface hardware This may damage the diskettes Warning A Warning A Warning Wear eye condition may protection when threaten performing these personal safety maintenance procedures Related Documents This section provides information on supporting documentation including 3Com Documents QO 3Com Documents Q Reference Documents The following documents provide additional information on 3Com products 17 Slot ONline System Concentrator Installation and Operation Guide Explains how to install operate and manage the 3Com ONline 17 Slot System Concentrator Models 5017C LS and 5017C with load sharing xvi ONline Ethernet 10BASE FB Module Installation and Operation Guide 6 Slot ONline System Concentrator Installation and Opera
71. ual loss Table 2 7 shows typical power losses in fiber optic cables Table 2 7 Typical Fiber Loss Characteristics Fiber Type Loss dB km BERE 50 125 micron 820 nM 3to5 3 75 62 5 125 micron 820 nM 3to5 3 75 85 125 micron 820 nM 3 to 6 4 0 100 140 micron 820 nM 3to6 5 0 Designing and Expanding the Network 2 11 Maximum Link Distance Calculation The follow ing examples use the information provided in the previous pages to calculate the maximum allowable fiber optic link distance between two ports Example 1700 Meter Fiber Link With Mechanical Splice In the following example two ONline concentrators are connected using 10BASE FB Module ports Figure 2 1 shows an example of a 1700 meter fiber link with a mechanical splice using 62 5 125 fiber cable 1700 meters ia 0 fe o ie is 5 9 o s o 5 is 5 9 o Mechanical olol o ololo ol olog Splice Dnoonooon 0 poocoocoo g Dooooooge Ocooono ao 0 unaconna l nnaacoDnnD ONE 1 7 km Fiber Cable 8 5 dB worst case loss using 5 0 dB km loss fiber cable 1 Mechanical Splice 1 0 dB loss worst case Path Loss 9 5 dB Figure 2 1 1700 Meter Fiber Link With Mechanical Splice To calculate the maximum link distance l Use Table 2 3 to d
72. undancy Configuration In Figure 2 12 three concentrators are active where Concentrator B is a redundant concentrator for Concentrator A 2 30 ONline Ethernet 10BASE FB M odule Installation and Operation Guide Main Backup Concentrator A Concentrator B B Sreelejejerejerejojepje ose 500 m dao ello ojojo 2 orolo orem 7 fe o s o s o o le o o o o o 2 Km al ala f 800 m Primary Link r MAS Back Up Link Z Normal Link Concentrator D o o Jo o o o o o a olololalolalalolalajal Ilie Transceivers Transceivers o o Figure 2 12 Fiber Network With 3 Concentrators In Figure 2 12 the fiber equivalent distance between transceivers attached to Concentrators C and D is 3 190 m 1000 m 1000 m 500 m 1000 m 24070 m Because this is less than 4200 meters the configuration is legal In Figure 2 12 if the main link from Concentrator A to Concentrator C faults the signal path enabled through redundancy includes Concentrator B By adding Concentrator B the fiber equivalent distance has become too great and the network cannot work because the path between Concentrators C and D is C B A D 4 190 1000 m 2000 m 500 m 500 m 1000 m 25760 m Because the sum is greater than 4200 me
73. unicate 1 6 ONline Ethernet LOBASE FB Module Installation and Operation Guide Designing and Expanding the Network This chapter contains configuration information to help you design your network It describes how to configure networks using the ONline System Concentrator and the ONline 10BASE FB Modules It also provides examples of network cabling structures and Ethernet network cabling solutions This chapter contains the following sections Q Understanding the General Rules Q Determining Maximum Fiber Link Distances Q Choosing a Network Backbone Cabling Structure QO 10BASETB Module Configurations Q Fault Tolerant Configurations Note To ensure proper operation of your network install all equipment using only approved cables Refer to Appendix A for information on cable requirements Designing and Expanding the Network 2 1 Understanding the General Rules This section describes general rules for configuring an Ethernet network using fiber as the backbone medium It also provides rules to ensure that your network configuration conforms to distance limitations imposed by Ethernet and networking equipment Use these guidelines for building your network Refer to the sections that follow for specific rules for Q Determining maximum 10BASE FB fiber link distances Q Connecting various horizontal media types 1OBASE FB twisted pair to a 10BASE FB backbone Q Examples of recommended fault tolerant configuration
74. you integrate the 10BASE FB M odules into your Ethernet network Chapter 3 Installing and Operating the Module Provides illustrated procedures for installing the LOBASE FB M odules into the ONline System Concentrator and configuring them for operation This chapter also provides a front panel view of the 10BASE FB M odules showing ports LEDs and dip switches Chapter 4 Troubleshooting Provides help in isolating and correcting problems that could arise during the installation process and during normal operation Appendix A Specifications Describes product dimensions power requirements and other specifications for the modules Appendix B Technical Support Lists the various methods for contacting the 3Com technical support organization and for accessing other product support services Index Contains an alphabetical list of important terms and features referenced throughout this guide xiv ONline Ethernet 1OBASE FB Module Installation and Operation Guide Document Conventions The following document conventions are used in this manuall Convention Courier text Indicates User input Example In the Agent Information Form enter Mrs in the New Contact field System output After pressing the Apply button the system displays the message Transmitting data Bold command Path names Before you begin read the string readme txt file located in usr snm agents Text in angled User substi

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