Netgear FS 750 User's Manual
Contents
1. NETGEAR U ser s Guide nove my 726 nove my 750 Trademarks NETGEAR is a registered trademark of NETGEAR Inc in the United States and other countries All other trademarks and registered trademarks are the property of their respective owners Statement of Conditions In the interest of improving internal design operational function and or reliability NETGEAR reserves the right to make changes to the products described in this document without notice NETGEAR does not assume any liability that may occur due to the use or application of the product s or circuit layout s described herein Certificate of the Manufacturer I mporter It is hereby certified that the NETGEAR M odel FS726 Modular Fast Ethernet Switch and M odel FS750 Modular Fast Ethernet Switch have been suppressed in accordance with the conditions set out in the BM PT AmtsblVfg 243 1991 and Vfg 46 1992 The operation of some equipment for example test transmitters in accordance with the regulations may however be subject to certain restrictions Please refer to the notes in the operating instructions Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations Voluntary Control Council for Interference VCCI Statement This equipment is in the first category information equipment to be used in commercial a2. Determines whether the link to the attached device requires a normal connection such as when connecting the port to a PC or an uplink connection such as when connecting the port to a router switch or hub After detecting this information the switch automatically configures the RJ 45 port to enable communications with the attached device without requiring user intervention In this way the Auto U plink technology compensates for setting uplink connections while eliminating concern about whether to use crossover or straight through cables when attaching devices Note Using Auto Uplink to create multiple active paths between any two network devices can cause undesirable loops in the network resulting in an endless broadcast traffic that disables your network Loops occur when there are alternate routes between two network devices In Figure 2 3 for example a loop is created by connecting two RJ 45 ports on an FS726 Switch to a router containing a 4 port switch Figure 2 4 shows another scenario where a router with a 4 port switch connects to a hub and to a FS726 Switch the hub and switch in turn connect back to the same router creating multiple active paths between all three devices physical description 2 5 Model FS726 Switch FR314 Router NETGEAR Figure 2 3 Creating Redundant Paths between Network Devices Example 1 EN524 Hub Model FS726 Switch NETGEAR FR314 Router Figure 2 4
3. 10 Mbps SUSE Server Model FS750 Switch Model FS726 Switch CYC DI Figure 3 1 Example of Desktop Switching applications 3 1 Segment Switching and Bridging from 10 Mbps to 100 Mbps The FS726 and FS750 Switches can be used to segment a network into multiple con nected pieces to increase overall bandwidth and throughput Both switch models can segment networks that are built with the NETGEAR DS508 and EN516 hubs and can act as bridges connecting traditional 10BASE T Ethernet networks to 100BASE TX Fast Ethernet networks Model FS726 Switch Model DS508 Hub Model EN516 Hub Model FR314 Router _ Bog n I Figure 3 2 Example of Segment Switching and Bridging Media Compatibility and Conversion The FS726 and FS750 Switches are ideal for a mixed media environment Both switch es feature two front panel module bays that can be easily installed with one or two fiber Gigabit Ethernet modules one or two copper Gigabit Ethernet modules or one gigabit module of each type providing optimal flexibility for high speed connection to a server or your network backbone applications 3 2 Model FS726 Model FS509 Model FS518 NETGEAR Figure 3 3 Example of Media Compatibility and Conversion applications 3 3 CHAPTER 4 INSTALLATION This chapter describes the installation procedures for the
4. Segment Switching and Bridging from 10 Mbps to 100 Mbps M edia Compatibility and Conversion CHAPTER 4 Installation Preparing the Site Installing the Switch Installing the Switch on a Flat Surface Installing the Switch in a Rack Connecting Devices to the Switch Using Gigabit Ethernet M odules Checking the Installation Applying AC Power WWW w NNNNNNN erreren JNUNUDSDWEFE UNNE 1 1 NINFEE AsSpapssSASASASASA ARS TESI STI a TRIO DO DTQUBLWIWJWIWNNLE Contents Vv CHAPTER 5 Troubleshooting Information Additional Troubleshooting Suggestions Network Adapter Cards Configuration Switch Integrity Auto Negotiation APPENDIX A Technical Specifications Network Protocol and Standards Compatibility Data Rate Interface Performance Specifications Bandwidth Electrical Specifications Power Consumption Physical Specifications Environmental Specifications Electromagnetic E missions Electromagnetic Susceptibility Safety Agency Approvals APPENDIX B Connector Pin Assignments RJ 45 Plug and RJ 45 Connector Duplex SC Plug and Duplex SC Connector contents vi U LUI LI VI VI VI 1 1 1 1 1 1 WW w w whe rPrrrrrrrrrrry r PPBWWWWNNP PEP www Whee APPENDIX C Cabling Guidelines Fast Ethernet Cable Guidelines Category 5 Cable Category 5 Cable Specifications Twisted Pair Cables Patch Panels and Cables Using 1000BASE T Gigabit Ethernet over Category 5 Cable Overview Cabling Length Return Loss Near End Crosstalk
5. Creating Redundant Paths between Network Devices Example 2 physical description 2 6 Reset Button A reset button is located on the front panels of the FS726 and FS750 Switches The button allows you to reinitialize the switches after you either insert or remove a module from a module bay To activate the Reset button insert a small wire such as a paper clip into the hole and gently push As the switch reinitializes all of the LEDs will extinguish then light up for approximately one second during the self test and then return to their normal state The switch will then operate as normal with the new bay configuration physical description 2 7 CHAPTER 3 APPLICATIONS The FS726 and FS750 Switches are designed to provide flexibility in configuring your network connections Both switches can be used as stand alone devices or used with 10 M bps hubs 100 M bps hubs or 10 100 M bps switches This chapter shows how the FS726 and FS750 Switches can be used in various network environments Topics include Desktop switching Segment switching and bridging from 10 Mbps to 100 Mbps Media compatibility and conversion Desktop Switching The FS726 and FS750 Switches can be used as desktop switches to build a small network that enables users to have 1000 M bps access to a file server A full duplex adapter card installed in the server can provide 2000 M bps full duplex connection 1000 Mbps 100 Mbps
6. 4 Module Bays 2 5 Auto Uplink 2 5 Data Rate A 1 Interface A 1 Electrical Specifications A 3 Physical Specifications A 2 Environmental Specifications A 3 Electromagnetic Emissions A 4 Electromagnetic Susceptibility A 4 R Safety Agency Approvals A 4 Performance Specifications A 2 Troubleshooting Troubleshooting Chart 5 1 Additional Troubleshooting Suggestions 5 3 Preparing the Site 4 2 Return Loss C 6 RJ 45 Plug and RJ 45 Connector B 1 S Network Adapter Cards 5 3 Configuration 5 3 Segment Switching and Bridging Switch Integrity 5 3 from 10M bps to 100 M bps 3 2 Auto Negotiation 5 3 Twisted Pair Cables C 3 index 1 2 NETGEAR NETGEAR Inc 4500 Great America Parkway Santa Clara CA 95054 USA Phone 1 888 NETGEAR www NETGEAR com M FS700NA 0 July 2001
7. 45 connector B 2 10 100 1000 Mbps RJ 45 Plug and RJ 45 Connector Pin Assignments Channel Description connector pin assignments B 2 Duplex SC Plug and Duplex SC Connector The duplex SC connector connects stations hubs and switches that support the 1000BASE SX fiber interface E ach fiber link needs a clearly defined external crossover In other words the transmit port of one interface must be wired to the receive port of the opposite interface and vice versa Fiber cables must be connected in this manner to transmit and receive data The duplex SC connector and duplex SC plug are illustrated in Figure B 2 8895FA Figure B 2 Duplex SC Connector and Duplex SC Plug Connection Warning Fiber optic equipment can emit laser or infrared light that might Ax injure your eyes Never look into an optical fiber or connector port Always assume that fiber optic cables are connected to a light source connector pin assignments B 3 APPENDIX C CABLING GUIDELINES This appendix provides specifications for cables used with the FS726 and FS750 Switches Fast Ethernet Cable Guidelines Fast Ethernet uses UTP cable as specified in the IEEE 802 3u standard for 100BASE TX The specification requires Category 5 UTP cable consisting of either two pair or four pair twisted insulated copper conductors bound in a single plastic sheath Category 5 cable is certified up to 100 MHz bandwidth 1
8. Full duplex mode to double throughput of point to point connections by enabling individual ports to transmit and receive data concurrently e IEEE 802 3x compliant flow control to prevent dropped packets due to network back ups and bottlenecks introduction 1 3 e Compliance with the IE E E802 3i Ethernet IEEE 802 3u Fast Ethernet standards I1EEE802 3ab Gigabit Ethernet and IEEE 802 3z Gigabit Ethernet LED indicators to show link speed activity collision and duplex for switch status and troubleshooting Rack Mount Kit for installing the switch in a standard 19 inch equipment rack introduction 1 4 Package Contents Figure 1 1 shows the package contents of the FS726 and FS750 switches Model FS726 or Model FS750 Switch Model FS726 shown Rubber footpads des e Rack mount Installation Guide Warranty Owner Registration Card Support Information Card Figure 1 1 Package Contents Verify that your package contains the following e FS726 or FS750 Switch Rubber footpads for tabletop installation Power cord Rack mount kit for installing the switch in a 19 inch rack NETGEAR FS726 and FS750 Modular Fast Ethernet Switch User s Guide Support Information Card Warranty amp Owner Registration Card If any item is missing or damaged contact your place of purchase immediately introduction 1 5 CHAPTER 2 PHYSICAL DESCRIPTION This chapter describes the hardware fe
9. NEXT Patch Cables Conclusion Fiber Optic Cables Fiber Cable Specifications Gigabit Cable Guidelines INDEX FIGURES PIRO RAT to a AA RISI RANE 0 o WNWUYNDIAQUUIUIWWNEFHEW Re contents vii Figure 1 1 Figure 2 1 Figure 2 2 Figure 2 3 Figure 2 4 Figure 3 1 Figure 3 2 Figure 3 3 Figure 4 1 Figure 4 2 Figure B 1 Figure B 2 Figure C 1 Figure C 2 Figure C 3 TABLES figures Package Contents Front and Back Panels of the FS726 Switch Front and Back Panels of the FS750 Switch Creating Redundant Paths between Network Devices Example 1 Creating Redundant Paths between Network Devices Example 2 E xample of Desktop Switching E xample of Segment Switching and Bridging Example of M edia Compatibility and Conversion Attaching M ounting Brackets Connecting Devices to the Switch RJ 45 Plug and RJ 45 Connector with Built in LEDs Duplex SC Cconnector and Duplex SC Plug Straight Through Twisted Pair Cable Crossover Twisted P air Cable Category 5 UTP Cable with Male RJ 45 Plug at Each End viii 1 5 2 2 2 3 2 6 2 6 3 1 3 2 3 3 4 3 4 4 B 1 B 3 C 4 C 4 C 5 Table Table Table Table Table Table Table Table Table 2 1 4 1 5 1 B 1 B 2 C 1 C 2 C 3 Key Features Front Panel LEDs Site Requirements Troubleshooting Information 10 100 M bps RJ 45 Plug and RJ 45 Connecto
10. the Model FS750 Switch Figure 2 2 Front and Back Panels of the FS750 Switch 10 100 Mbps RJ 45 Ports As Figures 2 1 and 2 2 show the FS726 Switch has 24 RJ 45 ports while the FS750 Switch has 48 RJ 45 ports These are auto sensing 10 100 M bps ports when you insert a cable into an RJ 45 port the switch automatically detects the maximum speed 10 or 100 M bps and duplex mode half or full duplex of the attached device and displays this information using the front panel 100 Mbps and F DX LEDs for that port LEDs are described in the next section The 10 100 M bps ports support only unshield ed twisted pair UTP cable terminated with an 8 pin RJ 45 plug physical description 2 3 LED Mode Button and LED Descriptions LEDs on the front panels of the FS726 and FS750 Switches provide a quick and accurate display of port operation Users can clearly identify the status of each port for link and by toggling the LED M ode button through the associated categories speed activity collision and duplex mode Table 2 1 summarizes the LEDs on the FS726 and FS750 Switches A detailed description of the LE Ds follows the table Table 2 1 Front Panel LEDs Activity Description Power Power is supplied to the switch Power is disconnected Link Port has a valid link connection A valid link has not been established on the port Mode in Max Spd 10 100 Mbps Port Port has made a 100 Mbps connection Port has made a 10 M
11. 00BASE TX operation uses one pair of wires for transmission and the other pair for receiving and for collision detection When installing Category 5 UTP cabling use the following guidelines to ensure that your cables perform to the following specifications Certification M ake sure that your Category 5 UTP cable has completed the Underwriters Laboratories UL or Electronic Testing Laboratories ETL certification process Termination method To minimize crosstalk noise maintain the twist ratio of the cable up to the point of termination untwist at any RJ 45 plug or patch panel should not exceed 0 5 inch 1 5 cm cabling guidelines C 1 Category 5 Cable Category 5 distributed cable that meets ANSI EIA TIA 568 A building wiring standards can be a maximum of 328 feet ft or 100 meters m in length divided as follows 20 ft 6 m between the hub and the patch panel if used e 295 ft 90 m from the wiring closet to the wall outlet e 10 ft 3 m from the wall outlet to the desktop device The patch panel and other connecting hardware must meet the requirements for 100 M bps operation Category 5 Only 0 5 inch 1 5 cm of untwist in the wire pair is allowed at any termination point cabling guidelines C 2 Category 5 Cable Specifications Table C 1 lists the electrical requirements of Category 5 UTP cable Table C 1 Electrical Requirements of Category 5 Cable Specifications Category 5 Cable Requirem
12. 16 ports 2 BM per port Store and forward Less than 80 microseconds for 64 byte frames in store and forward mode for 10 M bps to 100 M bps transmission 8 000 media access control MAC addresses per system 48 bit MAC address FS726 FS750 45 dB 52dB FS726 FS750 18 99 Btu hr 12 06 Btu hr FS726 FS750 5 Gbps 8 Gbps A 2 Electrical Specifications FS726 FS750 Power Consumption 40W maximum 60W maximum Physical Specifications FS726 FS750 Dimensions W 440 mm 17 3 W 440 mm 17 3 D 205 mm 8 1 D 205 mm 8 1 H 43 mm 1 6 H 86 mm 3 4 Weight 3 2 Kg 7 0 Ibs 4 3 Kg 9 5 Ibs Environmental Specifications Operating temperature 0 to 40 C Storage temperature 32 to 104 C Operating humidity 90 maximum relative humidity noncondensing Storage humidity 95 maximum relative humidity noncondensing Operating altitude 10 000 ft 3 000 m maximum Storage altitude 10 000 ft 3 000 m maximum technical specifications A 3 Electromagnetic Emissions M eets requirements of CE mark commercial FCC Part 15 Subpart B Class A EN 55024 CISPR 22 Class A VCCI Class 1A C tick Electromagnetic Susceptibility CE mark commercial Electrostatic discharge ESD IEC 801 2 Level 2 3 Radiated electromagnetic field 1EC 801 3 Level 2 Electrical fast transient ourst IEC 801 4 Level 2 Electrical surge IEC 801 5 Level 1 2 Safety Agency Approvals CE mark commercial UL cUL listed UL 1950
13. CSA certified CSA 22 2 950 TUV licensed EN 60 950 technical specifications A 4 APPENDIX B CONNECTOR PIN ASSIGNMENTS This appendix provides information about the RJ 45 plug and the RJ 45 connector used for the NETGEAR FS726 and FS750 Switches RJ 45 Plug and RJ 45 Connector In a Fast Ethernet network it is important that all 100BASE T certified Category 5 cabling use RJ 45 plugs The RJ 45 plug accepts 4 pair UTP or shielded twisted pair STP 100 ohm cable and connects into the RJ 45 connector The RJ 45 connector is used to connect stations hubs and switches through UTP cable it supports 10 M bps 100 Mbps or 1000 M bps data transmission Figure B 1 shows the RJ 45 plug and RJ 45 connector 12345678 Ke 711EA 1 to 8 pin numbers Figure B 1 RJ 45 Plug and RJ 45 Connector with Built in LE Ds connector pin assignments B 1 Table B 1 lists the pin assignments for the 10 100 M bps RJ 45 plug and the RJ 45 connector Table B 1 10 100 Mbps RJ 45 Plug and RJ 45 Connector Pin Assignments Normal Assignment Uplink Assignment Input Receive Data Output Transmit Data Input Receive Data Output Transmit Data Output Transmit Data Input Receive Data Output Transmit Data Input Receive Data Internal termination not used for data transmission Table B 2 lists the pin assignments for the 10 100 1000 Mbps RJ 45 plug and the RJ
14. Fast Ethernet Switches are flexible powerful and easy to use network solutions Both switches have two front panel module bays that can be used with gigabit uplinks to create a high performance backbone connection Each module bay accepts either a copper Gigabit Ethernet module 1000BASE T introduction 1 1 NETGEAR Model AG711T or a fiber Gigabit Ethernet module 1000BASE SX NETGEAR Model AG711F Modules are not included with the switches With the advantage of this modularity you can Connect switches to each other with high speed links e Link up to high speed servers e Connect fiber and copper networks The NETGEAR FS726 Switch provides 24 shielded RJ 45 network ports while the NETGEAR FS750 Switch provides 48 shielded RJ 45 network ports All RJ 45 ports on the FS726 and FS750 Switches automatically negotiate to the highest speed making the switches ideal for environments that have a mix of Ethernet and Fast Ethernet devices In addition all 10 100 M bps ports operate in half or full duplex mode increasing the maximum bandwidth of each connection up to 20 Mbps or 200 M bps respectively Both switch models support automatic address learning and IEEE 802 3x compliant flow control to ensure optimal packet reliability The FS726 and FS750 Switches can be free standing or rack mounted in a wiring closet or equipment room Features The following sections describe the characteristics of NETGEAR s FS726 and FS750 Switch
15. NETGEAR FS726 and FS750 Switches Topics include Preparing the site Installing the switch Connecting devices to the switch Checking the installation Applying AC power installation 4 1 Preparing the Site Before you install your switch be sure your operating environment meets the operating environment requirements inTable 4 1 Table 4 1 Site Requirements Characteristics Requirements M ounting Desktop installations Provide a flat table or shelf surface Rack mount installations Use a 19 inch 48 3 centimeter EIA standard equipment rack that is grounded and physically secure You also need the rack mount kit supplied with your switch Access Locate the switch in a position that lets you access the front panel RJ 45 ports view the front panel LEDs and access the rear panel stacking port s and power connector Power source Provide a power source within 6 feet 1 8 meters of the installation location Power specifications for the switches are shown in Appendix A Be sure the AC outlet is not controlled by a wall switch which can accidentally turn off power to the outlet and the switch Environmental Install the switch in a dry area with ambient temperature between 0 and Temperature 40 C 32 and 104 F Keep the switch away from heat sources such as direct sunlight warm air exhausts hot air vents and heaters Operating humidity The installation location should have a maximum relative
16. ategory 5e which defines a higher level of link performance than is available with Category 5 cable If installing new cable we recommend using Category 5e cable since it costs about the same as Category 5 cable If using the existing cable be sure to have the cable plant tested by a professional who can verify that it meets or exceeds either ANSI EIA TIA 568 A 1995 or ISO IEC 11801 1995 Category 5 specifications Length The maximum distance limitation between two pieces of equipment is 100 m as per the original Ethernet specification The end to end link is called the channel TSB 67 defines the Basic Link which is the portion of the link that is part of the building infrastructure This excludes patch and equipment cords The maximum basic link length is 295 feet 90 m Return Loss Return loss measures the amount of reflected signal energy resulting from impedance changes in the cabling link The nature of 1000BASE T renders this measurement very important if too much energy is reflected back on to the receiver the device does not perform optimally Unlike 10BASE T and 100BASE TX which use only two of the four pairs of wires within the Category 5 1000BASE T uses all four pairs of the twisted pair M ake sure all wires are tested this is important cabling guidelines C 6 Factors that affect the return loss are The number of transition points as there is a connection via an RJ 45 to another connector a pa
17. atures of the FS726 and FS750 Switches Topics include e Front and back panels e 10 100 Mbps RJ 45 ports LED Mode button and LEDs Module bays for copper or fiber Gigabit Ethernet modules Auto Uplink Reset button Front and Back Panels Figure 2 1 shows the key components on the front and back panels of the FS726 Switch Figure 2 2 shows the key components on the front and back panels of the FS750 Switch The front panel of each switch contains a reset button an LED Mode push button for alternating LED readout categories Link LE Ds Mode LE Ds RJ 45 jacks and two module bays for installing Gigabit Ethernet modules Both the FS726 Switch and the FS750 Switch support Auto Uplink technology eliminating the need for a Normal U plink push button The back panel of each switch has fans for cooling and a standard AC power receptacle for accommodating the supplied power cord physical description 2 1 Front Panel of the Model FS726 Switch 10 100 Mbps ports Module Bays Link LEDs Mode LEDs Power R z S T T A o serora meroma LED LED Mode Reset Button Button Rear Panel of the Model FS726 Switch Power Fan Receptacle Figure 2 1 Front and Back Panels of the FS726 Switch physical description 2 2 Front Panel of the Model FS750 Switch 10 100 Mbps ports Module Bays Link LEDs Mode LEDs Power LED LED Mode Reset Button Button Rear Panel of
18. bps connection Module Bay Port Port has a valid 1000 M bps 1 Gbps link connection A valid link has not been established on the port Mode in Activity Collision Blinking Data transmission is occurring on the port Blinking Data collision is occurring on the port The rate at which this LED blinks corresponds to the number of collisions When a collision occurs the connected device pauses and transmits again after waiting a specified time Mode in FDX Green Port is operating in full duplex mode Yellow Port is operating in half duplex mode physical description 2 4 Module Bays Two module bays on both switches allow you to upgrade as you go whether you need gigabit uplink or additional port capacity Each module bay will accept either a copper Gigabit Ethernet module 1000BASE T NETGEAR Model AG711T or a fiber Gigabit Ethernet module 1000BASE SX NETGEAR Model AG711F for high speed connec tion to a server to connect fiber and copper networks or to extend your network back bone with high speed links Auto U plink To simplify the procedure for attaching devices all RJ 45 ports on the FS726 and FS750 Switches support Auto Uplink This technology allows you to attach devices to the RJ 45 ports using either straight through or crossover cables When you insert a cable into the switch s RJ 45 port the switch automatically e Senses whether the cable is a straight through or crossover cable and
19. e Figures 2 3 and 2 4 Break the loop by ensuring that there is only one path from any networked device to any other networked device Additional Troubleshooting Suggestions If the suggestions in Table 5 1 do not resolve your problem refer to the troubleshooting suggestions in this section Network Adapter Cards M ake sure the network adapter cards installed in the PCs are in working condition and the software driver has been installed Configuration If problems occur after altering the network configuration restore the original connections and determine the problem by implementing the new changes one step at a time M ake sure that cable distances repeater limits and other physical aspects of the installation do not exceed the E thernet limitations Switch Integrity If required verify the integrity of the switch by resetting the switch To reset the switch remove AC power from the switch and then reapply AC power If the problem continues contact NETGEAR technical support In North America call 1 888 NETGEAR If you are outside of North America please refer to the support information card included with your product Auto Negotiation The 10 100 M bps ports negotiate the correct duplex mode and speed if the device at the other end of the link supports auto negotiation If the device does not support auto negotiation the switch only determines the speed correctly and the duplex mode defaults to half duplex
20. ent off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that which the receiver is connected e Consult the dealer or an experienced radio TV technician for help EN 55024 Declaration of Conformity This is to certify that the NETGEAR Model FS726 Modular Fast Ethernet Switch and M odel FS750 Modular Fast Ethernet Switch are shielded against the generation of radio interference in accordance with the application of Council Directive 89 336 EEC Article 4a Conformity is declared by the application of EN 55024 Class A CISPR 22 N Warning This is a Class A product In a domestic environment this product may cause radio interference in which case the user may be required to take appropriate measures Canadian Department of Communications Radio Interference Regulations These digital apparatuses NETGEAR Mode FS726 Modular Fast Ethernet Switch and M odel FS750 Modular Fast Ethernet Switch do not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the Radio Interference Regulations of the Canadian Department of Communications R glement sur le brouillage radio lectrique du minist re des Communications Ces appareils num riques NETGEAR Model FS726 Modular Fast Ethern
21. ents umber of pairs Four mpedance 100 Q 15 utual capacitance at 1 KHz lt 5 6 nF per 100m aximum attenuation dB per 100 m at 20 C at 4 MHz 8 2 at 31 MHz 11 7 at 100 MHz 22 0 NEXT loss dB minimum at 16 MHz 44 at 31 MHz 39 at 100 MHz 32 Twisted Pair Cables For two devices to communicate the transmitter of each device must be connected to the receiver of the other device The crossover function is usually implemented internally as part of the circuitry in the device Computers and workstation adapter cards are usually media dependent interface ports called MDI or uplink ports M ost repeaters and switch ports are configured as media dependent interfaces with built in crossover ports called MDI X or normal ports Auto Uplink automatically senses which connection MDI or MDI X is needed and makes the right connection cabling guidelines Figure C 1 illustrates straight through twisted pair cable 736EA Key A Uplink or MDI port as on a PC B Normal or M DI X port as on a hub or switch 1 2 3 6 Pin numbers Figure C 1 Straight Through Twisted Pair Cable Figure C 2 illustrates crossover twisted pair cable T3TEA Key B Normal or MDI X port as on a hub or switch 1 2 3 6 Pin numbers Figure C 2 Crossover Twisted P air Cable cabling guidelines C 4 Patch Panels and Cables If you are using patch panels make sure that they meet the 100BASE TX requireme
22. es Key Features Table 1 1 summarizes the key features of the FS726 and FS750 Switches Table 1 1 Key Features Feature FS726 Switch FS750 Switch Number of 10 100 M bps RJ 45 ports per switch 48 Number of module bays per switch 2 introduction 1 2 Additional Features The FS726 and FS750 Switches share the following features Uplink adaptability for either copper gigabit or fiber gigabit modules Auto Uplink to automatically configure the RJ 45 ports for use with either straight through or crossover cables to make the right connection Non blocking wire speed filtering and forwarding of the traffic on all ports Scalability to meet your growing network needs enabling performance to keep pace with port density High speed bandwidth over uplink connections Easy Plug and P lay installation with no software to configure for quick and easy connection to new or existing 10 and 100 Mbps users and services e Store and forward intelligent processing to remove erroneous packets from the network Automatic address learning function to build the packet forwarding information table The table contains up to 8 000 media access control MAC addresses that is the switch can support networks with as many as 8 000 devices e Link speed auto sensing 10 or 100 Mbps and duplex mode auto sensing half or full duplex to optimize connectivity and allow companies to migrate to Fast Ethernet one port at a time
23. et Switch et M odel FS750 M odular Fast Ethernet Switch respectent les limites de bruits radio lectriques visant les appareils num riques de classe A prescrites dans le R glement sur le brouillage radio lectrique du minist re des Communications du Canada Customer Support For assistance with installing and configuring your NETGEAR system or with questions or problems following installation Check the NETGEAR Web page at http www NETGEAR com Call Technical Support in North America at 1 888 NETGEAR Our technicians are standing by to assist you 24 hours a day 7 days a week If you are outside North America please refer to the phone numbers listed on the Support Information Card that shipped with your switch e E mail Technical Support at support NETGEAR com Defective or damaged merchandise can be returned to your point of purchase representative Internet World Wide Web NETGEAR maintains a World Wide Web home page that you can access at the uniform resource locator URL http www NETGEAR com A direct connection to the Internet and a Web browser such as Internet Explorer or Netscape are required CONTENTS CHAPTER 1 Introduction Description Features Key Features Additional F eatures Package Contents CHAPTER 2 Physical Description Front and Back Panels 10 100 Mbps RJ 45 Ports LED Mode Button and LED Descriptions M odule Bays Auto Uplink Reset Button CHAPTER 3 Applications Desktop Switching
24. hing 3 1 Segment Switching and Bridging from M bps to 100 Mbps 3 2 Applying AC Power 4 6 Auto Uplink 2 5 C Cabling guidelines Fast Ethernet Cable Guidelines C 1 Category 5 Cable C 2 Category 5 Cable Specifications C 3 Twisted Pair Cables C 3 Patch Panels and Cables C 5 Using 1000BASE T Gigabit Ethernet over Category 5 Cable C 5 Cabling C 6 Length C 6 Return Loss C 6 Near End CrossTalk NEXT C 7 Patch Cables C 7 Conclusion C 7 Checking the Installation 4 6 Connecting Devices to the Switch 4 4 Connector pin assignments RJ 45 P lug and RJ 45 Connector B 1 Customer Support iv D Data Rate A 1 Desktop Switching 3 1 F Fast Ethernet Cable Guidelines C 1 Features 1 2 Front and Back Panels 2 1 Fiber Optic Cables C 8 Fiber Cable Specifications C 8 G Gigabit Cable Guidelines C 8 Installation Preparing the Site 4 2 Installing the Switch 4 3 Installing the Switch on a Flat Surface 4 3 Installing the Switch in a Rack 4 3 Connecting Devices to the Switch 4 4 Checking the Installation 4 6 Applying AC Power 4 6 Interface A 1 LED Descriptions 2 4 Near End Cross Talk NEXT C 7 Network Protocol and Standards Compatibility A 1 index I 1 P T Package Contents 1 5 Technical Specifications Patch Panels and Cables C 5 Network Protocol and Physical Description Standards Compatibility A 1 Front and Back Panels 2 1 10 100 Mbps RJ 45 Ports 2 3 LED Descriptions 2
25. humidity of 90 non condensing Ventilation Do not restrict airflow by covering or obstructing air inlets on the sides of the switch Keep at least 2 inches 5 08 centimeters free on all sides for cooling Be sure there is adequate airflow in the room or wiring closet where you intend to install the switch Operating conditions Keep the switch at least 6 ft 1 83 m away from nearest source of electro magnetic noise such as a photocopy machine After confirming that your site meets the requirements in Table 4 1 you are ready to install the switch installation 4 2 Installing the Switch You can install the NETGEAR FS726 and FS750 Switches on a flat surface or in a standard 19 inch rack Installing the Switch on a Flat Surface 1 Theswitch ships with four self adhesive rubber footpads Affix one rubber footpad on each of the four concave spaces on the bottom of the switch The rubber footpads cushion the switch against shock vibrations Figure 4 1 Attaching Mounting Brackets la Installing the Switch in a Rack To install the FS726 or FS750 Switch in a rack use the following procedure and refer to Figure 4 1 To perform this procedure you need the 19 inch rack mount kit supplied with your switch 1 Attach the supplied mounting brackets to the side of the switch 2 Insert the screws provided in the rack mount kit through each bracket and into the bracket mounting holes in the switch 3 Tighten
26. ink LED is off for a port that has a connection There is a problem with this connection Solution Make sure the cable is attached securely at both ends Make sure the cable is not damaged Check that the device being connected to is powered on and operating correctly If the connection is to a workstation make sure the workstation s network interface is installed and configured correctly File transfer is slow or performance degradation is a problem Half or full duplex setting on the switch and the connected device are not the same Make sure the attached device is set to auto negotiate A segment or device is not recognized as part of the network One or more devices are not properly connected or cabling does not meet Ethernet guidelines Verify that the cabling is correct Be sure all connectors are securely positioned in the required ports Equipment may have been accidentally disconnected ACT LED is blinking yellow excessively Collisions are occurring on the connected segment Duplex modes are mismatched Some collisions are normal when the connection is operating in half duplex mode Recheck the settings of the device attached to the RJ 45 port Make sure the attached device is set to auto negotiate ACT LED is flashing continuously on all connected ports and the network is disabled troubleshooting 5 2 A network loop redundant path has been created se
27. inks but you also can opt to expand your network gradually and affordably as needed Installing a Gigabit Ethernet module a Unscrew and remove the module cover plate b Insert the module into the slot pressing firmly to seat the module c Tighten the module screws d Press the reset button if the power has remained on throughout the installation of the gigabit modules installation 4 5 Checking the Installation Before you apply power Inspect the equipment thoroughly Verify that all cables are installed correctly Check cable routing to make sure cables are not damaged or create a safety hazard Be sure all equipment is mounted properly and securely Applying AC Power The switches do not have an ON OFF switch the only method of applying or removing AC power is by connecting or disconnecting the power cord Before you connect the power cord select an AC outlet that is not controlled by a wall switch which can turn off power to the switch After you select an appropriate outlet use the following procedure to apply AC power 8 Connect the female end of the supplied AC power adapter cable to the power outlet on the back of the switch 9 Connect the 3 pronged end of the AC power adapter cable to a grounded 3 pronged AC outlet When you apply power The green Power LED on the switch s front panel goes on e The green Link LED on each connected RJ 45 port goes on If the green Power LED does not go o
28. installation 5 3 APPENDIX A TECHNICAL SPECIFICATIONS This appendix provides technical specifications for the NETGEAR FS726 or FS750 Switches Network Protocol and Standards Compatibility ISO IEC 802 31 10BASE T IEEE 802 3u 100BASE TX IEEE 802 3ab 1000BASE T IEEE 802 3z 1000BASE SX IEEE 802 3x Flow Control Data Rate 10 Mbps differential M anchester encoded IEEE 802 3 100 Mbps with 4B 5B encoding and MLT 3 physical interface for 100BASE TX 1000 Mbps with 8B 10B encoding PAM 5 physical interface for 1000BASE T Interface RJ 45 connector for LOBASE T 100BASE TX Fast Ethernet and 1000BASE T Gigabit Ethernet 1000 Mbps Duplex SC fiber connector for 62 5 125 or 50 125 multimode fiber LOOOBASE SX technical specifications A 1 Performance Specifications Frame filter rate Frame forward rate 10 100 buffer memory Gigabit buffer memory Forwarding modes Network latency Address database size Addressing Acoustic noise ANSI S10 12 Heat Dissipation Bandwidth technical specifications 14 800 frames second maximum on 10 M bps port 64B packets 148 000 frames second maximum on 100 M bps port 64B packets 1 480 000 frames second maximum on 1000 M bps port 64B packets 14 800 frames second maximum on 10 M bps port 64B packets 148 000 frames second maximum on 100 M bps port 64B packets 1 480 000 frames second maximum on 1000 M bps port 64B packets 8 MB for
29. n check that the power cable is plugged in correctly and that the power source is good If this does not resolve the problem refer to Chapter 5 Troubleshooting When power is applied the switch conducts a power on self test POST to verify operation After the switch passes the P OST it is functional and ready to pass data installation 4 6 installation 4 7 CHAPTER 5 TROUBLE SHOOTING This chapter provides guidance in troubleshooting the NETGEAR FS726 and FS750 Switches Information includes Troubleshooting information table Additional troubleshooting suggestions Troubleshooting Chart Table 5 1 lists symptoms causes and solutions of possible problems Table 5 1 Troubleshooting Chart Symptom Solution Power LED is off No power is received Check the power cord connections for the switch at the switch and the connected device M ake sure all cables used are correct and comply with Ethernet specifications Link LED is off Port connection is not working Check the crimp on the connectors or intermittnet and make sure that the plug is properly inserted and locked into the port at both the switch and the connecting device M ake sure all cables used are correct and comply with Ethernet specifications See Appendix C Check for a defective adapter card cable or port by testing them in an alternate environment where all products are functioning troubleshooting 5 1 Symptom L
30. nd or industrial areas and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office Machines that are aimed at preventing radio interference in com mercial and or industrial areas Consequently when this equipment is used in a residential area or in an adjacent area thereto radio interfer ence may be caused to equipment such as radios and TV receivers Federal Communications Commission FCC Compliance Notice Radio Frequency Notice This device complies with part 15 of the FCC Rules Operation is subject to the following two conditions This device may not cause harmful interference e This device must accept any interference received including interference that may cause undesired operation Note 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 in a residential installation This equipment generates uses and can radiate radio fre quency energy and if not installed and used in accordance with the instructions may cause harmful interfer ence to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipm
31. nsure it meets or exceeds ANSI EIA TIA 568 A 1995 or ISO IEC 11801 1995 Category 5 specifications Install Category 5e cable where possible including patch panel cables Minimize transition points jacket removal and untwist lengths Bundling of cables must be properly installed to meet the requirements in ANSI EIA TIA 568A 3 cabling guidelines C 7 Fiber Optic Cables In North America use EIA 569 A horizontal 62 5 125 um multimode optical fiber cable ANSI EIA TIA 492AAAA Internationally use 1SO IEC 11801 62 5 125 um multimode optical fiber cable IEC 793 2 type Alb with 1 0db km attenuation and 500 MHz km bandwidth Refer to Table C 2 for the minimum requirements of fiber optic cable Fiber Cable Specifications Table C 2 lists the electrical requirements of fiber cable Table C 2 Electrical Requirements of Fiber Optic Cable Specification Fiber Optic Cable Number of strands Two Cable type 62 5 125 um multimode fiber optic cable umerical aperture 0 275 Total link budget 11 db odal band 500 MHz km Zero dispersion wavelength 1295 to 1365 nm Dispersion slope lt 0 093 ps nm 2 km Gigabit Cable Guidelines Table C 3 lists the distance limitations for Gigabit fiber connections Table C 3 Gigabit Cable Guidelines Multimode Fiber 62 5 125 Micron 50 125 M icron Operating Range 2 to 260 meters 2 to 550 meters cabling guidelines C 8 A Applications Desktop Switc
32. nts NETGEAR recommends Category 5 UTP cable for all patch cables and work area cables to ensure that your UTP patch cable rating meets or exceeds the distribution cable rating To wire patch panels you need two Category 5 UTP cables with an RJ 45 plug at each end as shown in Figure C 3 7 87654321 C Figure C 3 Category 5 UTP Cable with Male RJ 45 Plug at Each End Note Flat silver satin telephone cable may have the same RJ 45 plug However using telephone cable results in excessive collisions causing the attached port to be partitioned or disconnected from the network Using 1000BASE T Gigabit Ethernet over Category 5 Cable Overview When using the new 1000BASE T standard the limitations of cable installations and the steps necessary to ensure optimum performance must be considered The most important components in your cabling system are patch panel connections twists of the pairs at connector transition points the jacket around the twisted pair cable bundling of multiple pairs on horizontal runs and punch down blocks All of these factors affect the performance of 1000BASE T technology if not correctly implemented The follow ing sections are designed to act as a guide to correct cabling for 1000BASE T cabling guidelines C 5 Cabling The 1000BASE T product is designed to operate over Category 5 cabling To further enhance the operation the cabling standards have been amended The latest standard is C
33. r Pin Assignments 100 1000 M bps RJ 45 Plug and RJ 45 Connector Pin Assignments Electrical Requirements of Category 5 Cable Electrical Requirements of Fiber Optic Cable Gigabit Cable Guidelines 1 2 2 4 4 2 5 1 B 2 B 2 C 3 C 8 C 8 tables ix CHAPTER 1 INTRODUCTION This installation guide describes the NETGEAR FS726 and FS750 Modular Fast E thernet Switches NETGEAR sFS726 and FS750 are expandable high performance IE EE compliant network switches designed for users who require a large number of ports and want the high speed capability of 10 100 switching to eliminate bottlenecks boost performance and increase productivity Both switches are designed with front module bays that will accommodate either copper gigabit modules or fiber gigabit modules for high speed connection to a server or your network backbone Built in modularity gives you the flex ibility to buy according to your immediate needs then add to your system later You can purchase the optimal combination of copper and fiber gigabit modules for your network both the same or one of each as either will function in each module bay To simplify installation both switch models are shipped ready for use with no configuration required Everything necessary for setup comes in the box This chapter provides the following information Description Features Package contents Description NETGEAR s FS726 and FS750 Modular
34. tch panel or device at each transition point Removing the jacket that surrounds the four pairs of twisted cable It is highly recommended that when RJ 45 connections are made this is minimized to 1 1 4 inch 32 mm Untwisting any pair of the twisted pair cabling It is important that any untwisting be minimized to 3 8 inch 10 mm for RJ 45 connections Cabling or bundling of multiple Category 5 cables This is regulated by ANSI EIA TIA 568A 3 If not correctly implemented this can adversely affect all cabling parameters Near End Cross Talk NEXT This is a measure of the signal coupling from one wire to another within a cable assembly or among cables within a bundle NEXT measures the amount of crosstalk disturbance energy that is detected at the near end of the link the end where the transmitter is locat ed NEXT measures the amount of energy that is returned to the sender end The factors that affect NEXT and crosstalk are exactly the same as outlined in the Return Loss sec tion The crosstalk performance is directly related to the quality of the cable installation Patch Cables When installing your equipment replace old patch panel cables that do not meet Category 5e specifications As pointed out in the NEXT section this near end piece of cable is critical for successful operation Conclusion For optimum performance of your 1000BASE T product it is important to fully qualify your cable installation and e
35. the screws with a 1 Phillips screwdriver to secure each bracket 4 Align the mounting holes in the brackets with the holes in the rack and insert two pan head screws with nylon washers through each bracket and into the rack 5 Tighten the screws with a 2 Phillips screwdriver to secure the switch in the rack 6 Proceed to Connecting Devices to the Switch installation 4 3 Connecting Devices to the Switch The following procedure describes how to connect devices to the switch s RJ 45 ports W hen attaching devices to an FS726 or an FS750 the switch s support for Auto Uplink technology allows you to attach devices using either straight through or crossover cables for more information about Auto Link technology refer to Auto Uplink on page 12 7 Connect each device to an RJ 45 network port on the switch s front panel see Figure 4 2 Use Category 5 Cat5 unshielded twisted pair UTP cable terminated with an RJ 45 connector to make these connections Front Panel of the Model FS726 or Model FS750 Switch Model FS726 shown Figure 4 2 Connecting Devices to the Switch Note Ethernet specifications limit the cable length between the switch and the attached device to 100 m 328 ft installation 4 4 Using Gigabit Ethernet Modules The modularity of the FS726 and 750 Switches provides you with a highly adaptable network You not only can configure your network for copper and or fiber gigabit upl
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