3Com 7750 Series Installation Manual Download Page 5

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Removing the AC Power Module 61
Installing the AC Power Module 61

Replacing a Power Supply     62
Replacing I/O Modules     63
Replacing the Fan Assembly     63

ROUBLESHOOTING

Troubleshooting the Configuration 65

No information is displayed on the terminal 65
The display characters are illegible 65

Troubleshooting Power     65
Troubleshooting the Fan     66
Troubleshooting the Modules     66

WITCH

7750 C

ABLES

Console Cable     67
AUX Cable     67
Electrical Port Connector     68
Optical Fiber Cable Connectors     69

BTAINING

UPPORT

FOR

YOUR

WITCH

Register Your Product to Gain Service Benefits     71
Purchase Value-Added Services     71
Troubleshoot Online     71
Access Software Downloads     71
Contact Us     72
Telephone Technical Support and Repair     72

Summary of Contents for 7750 Series

Page 1: ...http www 3com com Switch 7750 Installation Guide 3C16895 7 slot Chassis 3C16894 4 slot Chassis and associated modules Part No 10014824 Published June 2005 ...

Page 2: ...ver is applicable You agree not to remove or deface any portion of any legend provided on any licensed program or documentation contained in or delivered to you in conjunction with this User Guide Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com and the 3Com logo are registered trademarks of 3Com Corp...

Page 3: ...00BASE T FE PoE Module 17 48 port 10 100 1000BASE T PoE Module 18 48 port 10 100BASE T Auto sensing FE Module 19 48 port 10 100 1000BASE T Module 20 24 port 100BASE FX MMF FE Module 22 20 Port 10 100 1000BASE T Module 23 20 Port 1000BASE X SFP Module 24 8 port 1000BASE X GBIC Module 25 8 port 10 100 1000BASE T GE Module 27 1 Port 10GBASE R XENPAK Module 28 Power Module 29 Power Distribution 30 Ext...

Page 4: ...es 40 Connecting the Console Cable 40 Connecting the AUX Cable 40 Connecting Module Cables 41 Installing Cabling 42 Bench Mounted Switch 42 Rack Mounted Switch 42 Cable Binding 42 Post installation Checklist 43 CONFIGURING THE SWITCH 7750 Configuring the Switch 7750 and a Local Terminal 45 Setting Terminal Parameters 45 Booting the Switch 7750 48 Powering up and Booting 49 MAINTAINING SOFTWARE Upg...

Page 5: ...display characters are illegible 65 Troubleshooting Power 65 Troubleshooting the Fan 66 Troubleshooting the Modules 66 SWITCH 7750 CABLES Console Cable 67 AUX Cable 67 Electrical Port Connector 68 Optical Fiber Cable Connectors 69 OBTAINING SUPPORT FOR YOUR SWITCH Register Your Product to Gain Service Benefits 71 Purchase Value Added Services 71 Troubleshoot Online 71 Access Software Downloads 71 ...

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Page 7: ... lists icon conventions that are used throughout this guide Table 2 lists text conventions that are used throughout this guide Table 1 Notice Icons Icon Notice Type Description Information note Information that describes important features or instructions Caution Information that alerts you to potential loss of data or potential damage to an application system or device Warning Information that al...

Page 8: ...information in this guide differs from information in the release notes use the information in the Release Notes These documents are available in Adobe Acrobat Reader Portable Document Format PDF on the CD ROM that accompanies your router or on the 3Com World Wide Web site http www 3com com Words in italics Italics are used to Emphasize a point Denote a new term at the place where it is defined in...

Page 9: ...Backplane The Switch 7750 backplane is part of the integrated chassis and delivers high speed data transfer between the Fabric and I O modules The backplane bandwidth capacity is 96 Gbps The backplane supports the following functions Interconnection of signals between modules Provides communication channels Hot swapping for modules Automatic recognition of slots Distribution of power and managemen...

Page 10: ...nctions Connects the I O modules through the backplane and forwards Layer 2 and Layer 3 data Manages and calculates routing Performs the switch s software upgrade and system reset functions Monitors system power and the fan frame Figure 1 illustrates the front panel of the PoE Fabric 96 Figure 1 PoE Fabric 96 1 Compact Flash port 2 1000BASE X SFP ports 3 Console port 4 Ethernet port 5 Ethernet por...

Page 11: ...tions Item PoE Fabric 96 3C16886 Fabric 64 3C16857 or 3C16857R Fabric 32 3C16872 Bandwidth 96 Gbps 64 Gbps 32 Gbps CPU MPC8245 MPC8260 200 Mhz BootROM 512 KB 1 MB SDRAM 256 M 256 MB Flash 32 MB 16 MB Submodule slot 1 Dimensions L x W 366 7 mm x 340 mm 14 5 x 13 5 in External ports One console port that supports local and remote dial up configuration management of the switch One 10BASE T 100BASE TX...

Page 12: ...e 1000BASE X SFP Ports The PoE Fabric 96 provides four 1000 Mbps full duplex SFP ports Table 5 describes the SFP cables for these ports Table 9 describes the LEDs of the SFP ports Table 5 Cables for 1000BASE T SFP Modules SFP Module Central Wavelength Connector Matching Cable Maximum transmission distance 1000BASE SX SFP 850 nm LC 50 125 µm multimode optical fiber cable 550 m 1804 ft 62 125 µm mul...

Page 13: ...specifications See Electrical Port Connector on page 68 for an illustration of the RJ 45 connector and MDI MDI X pinout details Table 9 describes the LEDs of the Ethernet port Table 7 Console Port Specifications Specification Description Port connector RJ 45 Port standard Asynchronous EIA TIA 232 Baud rate 9600 bps by default Transmission distance 15 m 45 ft Services Connects with character termin...

Page 14: ... Green No data is being transmitted Green flashing Data is being transmitted Table 9 Ethernet Port LEDs continued LED Description Table 10 I O Module LEDs LED Status description RUN Green or off The module failed or has not been inserted Green flashing The module is working normally ALM Off The module is working normally or has not been inserted Green or green flashing The module failed or is not ...

Page 15: ... Ethernet port 2 Ethernet port LEDs Table 13 4 Port 1000BASE X GBIC Submodule LEDs LED Description LINK ACT Green The link is operating normally Off The link is not operating Green flashing Data is being transmitted Table 14 4 Port 1000BASE X GBIC Submodule Specifications Optional GBIC Module Central Wavelength Connector Type Interface Fiber Specifications Max Transmission Distance 1000BASE SX MM ...

Page 16: ...BIC Module 3C16858 8 port 10 100 1000BASE T GE Module 3C16859 1 Port 10GBASE R XENPAK Module 3C16875 Consider the following when selecting I O modules You can configure several I O modules of the same type Any combination of I O modules can be inserted but only PoE I O modules provide the features of power over Ethernet You must select I O module port cables that are compatible with each installed...

Page 17: ...ED Table 23 describes the 48 port 10 100BASE T FE PoE Module LEDs Table 24 describes the specifications for the 48 port 10 100BASE T FE PoE module Table 17 module LED LED Description LINK ACT Green The port is connected Off The port is not connected Green flashing Data is being transmitted Table 18 Specifications for the 48 port 10 100BASE T FE PoE Module Specification Description CPU MPC8241 Boot...

Page 18: ...e 9 Front Panel of the 48 port 10 100 1000BASE T PoE Module 1 Ethernet port 2 Ethernet port LED Table 23 describes the 48 port 10 100 1000BASE T PoE module LEDs Maximum power each port provides 15 4 W Compliance IEEE802 3 IEEE802 3u IEEE802 3x IEEE802 3ad IEEE802 1p IEEE802 1D IEEE802 1Q IEEE802 1X IEEE802 1s IEEE802 1w IEEE802 3af Table 18 Specifications for the 48 port 10 100BASE T FE PoE Module...

Page 19: ...d LEDs of the 48 port 10 100BASE T Auto sensing FE module Table 20 Specifications for the 48 port 10 100 1000BASE T PoE Module Specification Description CPU MPC8241 BootROM 512 KB SDRAM 128 M Dimensions L X W 366 7 x 340 mm 14 4 x 13 4 in Maximum power consumption 70 W Connector RJ 45 Number of ports 48 Port transmission speed 10 100 1000 Mbps half full duplex MDI MDIX auto sensing Cables and maxi...

Page 20: ... Mbps auto sensing Ethernet electrical ports Figure 12 illustrates the 48 port 10 100 1000BASE T module Table 21 48 Port 10 100BASE T Auto sensing FE module LED LED Description LINK ACT Green The port is connected Off The port is not connected Green flashing Data is being transmitted Table 22 Specifications for the 48 Port 10 100BASE T Auto sensing FE Module Specification Description CPU MPC850 Bo...

Page 21: ...connected Off The port is not connected Green flashing Data is being transmitted Table 24 Specifications for the 48 port 10 100 1000BASE T Module Specification Description CPU MPC8241 BootROM 512 KB SDRAM 128 M Dimensions L X W 366 7 x 340 mm 14 4 x 13 4 in Maximum power consumption 70 W Connector RJ 45 Number of ports 48 Port transmission speed 10 100 1000 Mbps half full duplex MDI MDI X auto sen...

Page 22: ...us of the 24 port 100BASE FX MMF FE module LEDs The 24 port 100BASE FX MMF FE module requires a 62 5 125 µm multi mode optical fiber cable with an MT RJ connector and a central wavelength of 1300 nm Table 26 describes the specifications of the 24 port 100BASE FX MMF FE module Table 25 24 Port 100BASE FX MMF FE Module LEDs LED Description LINK ACT Green The port is connected Off The port is not con...

Page 23: ...ernet port LED Table 27 describes the 20 port 10 100 1000BASE T module LEDs Connector type MT RJ Number of ports 24 Port transmission speed 100 Mbps full duplex Cables and maximum transmission distance 62 5 125 µm multi mode optical fiber up to 2 km 1 3 mi Compliance IEEE 802 3 IEEE 802 3i IEEE 802 3u IEEE 802 3x Table 26 Specifications for the 24 Port 100BASE FX MMF FE Module continued Specificat...

Page 24: ...BASE X SFP module Figure 19 Front Panel of the 20 Port 1000BASE X SFP Module Table 28 Specifications for the 20 Port 10 100 1000BASE T Module Specification Description CPU MPC8241LZU200 BootROM 512 KB SDRAM 64 MB Dimensions L x W 366 7 x 340 mm 14 5 x 13 4 in Power consumption 45 W Connector RJ 45 Number of ports 20 Transmission rate 10 Mbps half full duplex 100 Mbps half full duplex 1000 Mbps ful...

Page 25: ... not operating On The port is operating Green flashing The port is transmitting data Table 30 Specifications for the 20 Port 1000BASE X SFP Module Specification Description CPU MPC8241LZU200 BootROM 512 KB SDRAM 64 MB Dimensions L x W 366 7 x 340 mm 14 5 x 13 4 in Power consumption 35 W Connector SFP socket Number of ports 20 Transmission rate 1000 Mbps full duplex Cable and maximum transmission d...

Page 26: ...ed inTable 32 Table 33 describes the specifications of the 8 port 1000BASE X GBIC module Table 31 8 Port 1000BASE X GBIC Module LEDs LED Description LINK Off The link is not connected Green The link is connected ACT Off No data is being transmitted Green flashing Data is being transmitted or received Table 32 GBIC Module Port Cables GBIC Module Type Central Wave Length 3CGBIC91 850 nm 3CGBIC92 155...

Page 27: ...E T GE module has 2 LEDs as shown in Figure 23 Figure 23 Front Panel of the 8 Port 10 100 1000BASE T GE Module 1 Ethernet port 2 Ethernet port LEDs BootROM 512 KB SDRAM 64 MB Dimensions L x W 366 7 x 340 mm 14 5 x 13 4 in Maximum power consumption 50 W Number of ports 8 Optional GBIC module types 3CGBIC 91 3CGBIC 92 3CGBIC 97 Port transmission speed 1000 Mbps full duplex Compliance IEEE 802 3z IEE...

Page 28: ...E T GE Module LEDs LED Description LINK Off The link is not connected Green The link is connected ACT Off No data is being transmitted Green flashing Data is being transmitted or received Table 35 Specifications for the 8 Port 10 100 1000BASE T GE Module Specification Description CPU MPC850 BootROM 512 Kb SDRAM 64 MB Dimensions L x W 366 7 x 340 mm 14 5 x 13 4 in Maximum power consumption 50 W Con...

Page 29: ...0 systems Table 36 1 Port 10GBASE R XENPAK Module LEDs LED Description LINK On The port is operating Off The port is not operating ACT Off No data is being transmitted Green flashing Data is being transmitted Table 37 Specifications for the 1 Port 10GBASE R XENPAK Module Specification Description CPU MPC8245 BootROM 512 KB SDRAM 64 MB Dimensions L x W 366 7 x 340 mm 14 5 x 13 4 in Power consumptio...

Page 30: ... display alarm information for the power module that is not working The power distribution box for the 7 slot chassis has two inputs and two ON OFF switches One input can support the normal operation of three AC power modules at the same time When both AC power inputs are connected and switched on the power distribution box offers N 1 AC power redundancy External PoE Power System The Switch 7750 s...

Page 31: ...bly consists of two to four individual fans and is located on the right side of the chassis 4 slot chassis 3C16871 7 slot chassis 3C16856 The fans are directly connected to the backplane through connectors Fan operation fault signals are collected and transmitted to the system alarm board through the backplane Figure 27 illustrates the fan assembly for the 7 slot chassis Figure 27 Fan Assembly Tab...

Page 32: ...ons 48 port 10 100BASE T FE PoE Module 48 port 10 100 1000BASE T PoE Module 48 port 10 100BASE T Auto sensing FE Module 48 port 10 100 1000BASE T Module 24 port 100BASE FX MMF FE Module 20 Port 10 100 1000BASE T Module 20 Port 1000BASE X SFP Module 8 port 1000BASE X GE Module 8 port 10 100 1000BASE T GE Module 1 port 10GBASE R XENPAK Module Fabric performance 32 Gbps 64 Gbps Maximum aggregate syst...

Page 33: ...paring your site and switch for installation General Safety Recommendations Before installing your switch note the following safety recommendations Switch off the power supply before connecting the cables Keep the switch away from heat sources To ensure normal heat dissipation do not stack switches Do not keep the switch in a damp place and prevent liquid from getting into the switch Ensure that t...

Page 34: ...er move suddenly or twist your body Always disconnect all external cables including power cord before lifting or moving the chassis Do not hold the power handles when carrying the switch Do not put fingers into the vent of the chassis when carrying the switch Since the power handles and vent have not been designed to bear the weight of the entire chassis using them to carry the switch may damage t...

Page 35: ...ephone cable or other external line Ensure that the PGND wire of the chassis is well grounded Ensure that the neutral point of the socket of AC power supply is well grounded Install a lightning arrester at the input end of the power supply Installation Space The Switch 7750 is a complex piece of equipment so it is necessary to make arrangements for the installation position power supply and cablin...

Page 36: ...install the Switch 7750 in the cabinet 1 Carry the switch to the front of the cabinet At least two people are required to move the switch 2 Put the switch on the tray or the guides and push it into the cabinet 3 Fix the switch in the cabinet with the combination screw and floating nuts that are shipped with the switch Installing on a Workbench To install the switch on a workbench take the followin...

Page 37: ...ric 32 you need the following tools Phillips head screwdriver 2 Small pliers Do the following 1 Wear an antistatic wrist strap 2 Unfasten the screws on the Fabric 32 printed circuit board at locations M11 and M18 3 Unfasten and remove the submodule blanking plate from the Fabric 32 4 Fasten the screw with guide pin on the Fabric 32 printed circuit board at location M2 1 5 Fasten the four hexagonal...

Page 38: ...ound should be less than 1 ohm Connecting and Configuring Power The Switch 7750 requires power connection from the AC power source and from the PoE power rack Connecting AC Power Cords To connect AC power cords 1 Power off all the related parts of the switch before connecting the AC power cord 2 Plug the power cords into the sockets in the switch and attach the retention clips to the power cord pl...

Page 39: ...PoE external power input NEG 2 PoE external power input NEG 3 COM port external power monitor 3 Insert the GND OT terminal of the DC power cord to the RTN terminal of the switch and fasten the mounting screw insert the other end to the NEG terminal of the site power Figure 30 Front Panel of the PoE Rack 1 AC input socket 2 DC output terminal NEG 3 DC output terminal RTN 4 RS232 serial port 4 Inser...

Page 40: ...nd has both a DB 9 hole connector and a DB 25 hole connector for connection to a 9 hole or 25 hole serial port at the configuration terminal See Console Cable on page 67 for cable illustration and pinout details To connect a terminal or PC to the Switch 7750 using the console cable 1 Plug the DB 9 or DB 25 female plug of the console cable to the serial port of the PC or the terminal where the swit...

Page 41: ...GBIC submodule When connecting optical fiber cables use the fiber connectors that are appropriate for the optical port type of the peer equipment that is connected to the local network port module See Optical Fiber Cable Connectors on page 69 for illustrations of the fiber optic cable connectors Single mode optical fiber cable is used for external connections of the single mode optical port Multi ...

Page 42: ...em on the floor of the chassis Power cords run out of the rear left of the chassis and on a cable rack or under a raised floor Cable Binding Keep the following precautions in mind as you bind cables Do not allow cables to twist or bend as you bind them The cable body cannot be bent at an angle that is more than twice its diameter The cable running out of a connector cannot be bent more than five t...

Page 43: ...u have turned off the power before checking your installation Improper connections can injure people or damage components of the switch Table 42 Cable Binding Parameters Cable Bundle Diameter Space Between Bundles 10 mm 0 5in 80 150 mm 3 5 6 in 10 30 mm 5 1 2 in 150 200 mm 6 8 in 30 mm 1 2 in 200 300 mm 8 12 in Table 43 Installation Checklist Item Normal Abnormal Remarks Antistatic wrist strap Con...

Page 44: ...44 CHAPTER 2 INSTALLING THE SWITCH 7750 ...

Page 45: ...nnected to the switch console port using a console cable Figure 31 Connecting the Switch 7750 to a PC 1 Plug the DB 9 or DB 25 female plug of the console cable into the serial port of the PC or the terminal where the switch will be configured 2 Connect the RJ 45 connector of the console cable to the console port of the switch Setting Terminal Parameters To set terminal parameters and open a HyperT...

Page 46: ...e dialog box shown in Figure 33 displays Select the serial port to be used from the Connect using dropdown menu Figure 33 Properties Dialog Box 3 After selecting serial ports click OK The port shown in Figure 34 displays and you can set serial port parameters Set the following parameters Baud rate 9600 Databit 8 Parity check none Stopbit 1 Flow control none ...

Page 47: ...log Box 4 Click OK The HyperTerminal dialogue box displays as shown in Figure 35 Figure 35 HyperTerminal Window 5 Select Properties 6 In the Properties dialog box select the Settings tab shown in Figure 36 7 Select VT100 in the Emulation dropdown menu 8 Click OK ...

Page 48: ...fore powering on the Switch 7750 verify that Power cords have been properly connected The voltage of power supply can meet the requirements on the switch The console cable has been connected properly The PC or terminal for configuration has been started The terminal parameters have been set ...

Page 49: ...nes Selftest OK 60X_SDRAM fast selftest OK Please check LEDs LEDs selftest finished Switch chip selftest OK CPLD selftest OK The switch Mac address is 00E0 FC00 7505 Press Ctrl B to enter Boot Menu 5 To enter Boot Mode see Chapter 6 press Ctrl B during the 5 seconds that Press Ctrl B to enter Boot Menu 5 is displayed To perform decompression immediately press ESC while this message is displayed If...

Page 50: ...CONFIGURING THE SWITCH 7750 The display of these messages indicates the completion of the switch auto booting Press Enter and the terminal screen displays 3Com You can now begin the configuration for the Switch 7750 ...

Page 51: ...ng Software with FTP on page 51 Upgrading Software Using The BOOT Menu page 52 Upgrading Software Using Xmodem page 56 Upgrading Software Using TFTP page 58 Upgrading Software with FTP Use the following procedure to upgrade software with FTP 1 Log in to the system with super user privileges 2 From the SW7750 command line transfer the file from the FTP server to the system using the ftp command 3 S...

Page 52: ...d file will be booted next time SW7750 reboot This will reboot Switch Continue Y N y For more detailed descriptions of the setup and procedures for upgrading software see the remaining sections in this chapter Upgrading Software Using The BOOT Menu To perform this procedure you must have a network connection to the management port on the Switch 7750 Fabric module After powering on the Switch 7750 ...

Page 53: ...eep in mind the modified BOOTROM password Boot Menu 1 Download application file to flash 2 Select application file to boot 3 Display all files in flash 4 Delete file from flash 5 Modify bootrom password 0 Reboot Enter your choice 0 5 Downloading an Application to Flash Memory To download an application to flash memory 1 Select option 1 on the Boot Menu The following menu displays 1 Set TFTP protoc...

Page 54: ... txt 5 228308 s t 6 1975 sw7750 cfg 7 631736 Btm400 btm 8 462848 SW7750 V300R app 9 228376 S3com400 app 10 199696 8241btm app 11 2427 vrpcfg txt 12 203460 lpcom400 app 13 228308 snec400 app The current application file is SW7750 V300R app The backup application file is SW7750 V300RE 8016 app Free Space 7536640 bytes 3 Enter the file number of the primary image Please input the primary image file n...

Page 55: ...Image Fails If the backup image fails and another backup image configuration does not exist the Switch 7750 will try to find any valid image on the flash This image is not the primary or backup image All Images Fail If all images fail the Switch 7750 will return to the boot menu primary image snec400 app backup image SW7750 V300R app There is one passed image in addition File Number File Size byte...

Page 56: ...displayed The secondary boot image name cannot be displayed when there is an image error Upgrading Software Using Xmodem The Xmodem protocol transmits files through serial ports and supports both 128 byte and 1K byte packets Xmodem also supports two types of check normal checksum and CRC When there is a packet error retransmission is supported normally 10 times The Xmodem protocol completes transm...

Page 57: ...te download speed For example enter 5 to select a download speed of 115200bps 5 Press Enter The terminal displays the following information Download baudrate is 115200 bps Please change the terminal s baudrate to 115200 bps and select XMODEM protocol Press enter key when ready 6 Change the baud rate set at the configuration terminal so that the baud rate is consistent with the selected download ba...

Page 58: ...on 2 then select the newly downloaded file Upgrading Software Using TFTP TFTP Trivial File Transfer Protocol is a simple file transfer protocol that is used without complex interaction between clients and servers The client initiates a TFTP transmission To download files the client sends a read request packet to the TFTP server receives the packet from the server and sends the acknowledgement to t...

Page 59: ... from using the following command boot boot loader primary filename 4 Reboot the system The following example illustrates this procedure SW7750 tftp 10 10 110 1 get sw7750003 app Transfer file in binary mode Now begin to download file from remote tftp server please wait TFTP 5690749 bytes received in 376 second s File downloaded successfully SW7750 boot boot loader primary sw7750003 app The specif...

Page 60: ...l B immediately the system displays the Boot Menu If you do not press Ctrl B the system initiates the program decompression process At this time if you want to access the BOOT Menu you must reboot the switch Press Ctrl B The system displays Initialize flash file system Please wait Password Enter the BootROM password After entering the correct password no password is set for the switch by default t...

Page 61: ... the AC power socket 3 Loosen the retaining screw that secures the power supply on the lower right front of the power supply 4 Remove the power supplies approximately 2 inches 5 cm from the chassis to disconnect the power supply AC connectors from the AC power module 5 Loosen and remove the 4 screws at the corners of the power module 6 Remove the power module from the chassis Installing the AC Pow...

Page 62: ...hand and hold the handle with another hand Align the supply with the guides in the chassis and slide the supply gently into the slot CAUTION As you are inserting the power supply if the pin terminal springs up the pin cannot be seated into the hole and the system will sound an alarm If the power supply has not been inserted properly you should slide it out and insert it again to avoid breaking or ...

Page 63: ...n the chassis 3 Press the ejector levers inward and seat the pin on the handle bar into the positioning hole in the chassis 4 Fasten the captive screws to fix the module Replacing the Fan Assembly You can hot swap fan assemblies in the Switch 7750 To replace a fan assembly you need An antistatic wrist strap A Screwdriver WARNING To avoid injury do not touch any naked wire terminal or any part of t...

Page 64: ...64 CHAPTER 5 MAINTAINING HARDWARE WARNING If the fan fails replace it with a new one without delay before operating the Switch 7750 Failure to do so will cause the switch to overheat ...

Page 65: ... information displayed on the terminal after the Switch 7750 is powered on check that The power system is working normally The Fabric is working normally The console cable has been connected to the console port in the Fabric If this procedure does not reveal the problem verify that the console cable is properly connected and that the configuration terminal is set correctly The display characters a...

Page 66: ... the ALM LED remains on After normal booting it is off When resetting the module if the ALM LED remains off the module may not be connected to the power source Verify that the module has been properly installed in the correct position Table 44 Power LEDs on the Fabric LED Status Description OK On The power is working normally Off The power has failed or has not been installed FAIL On The power has...

Page 67: ...onnectors Figure 39 The Console cable Table 47 lists console cable pin outs AUX Cable Figure 40 illustrates the AUX cable Table 47 Console Cable Pin outs RJ 45 Signal Direction DB 25 DB 9 1 RTS 4 7 2 DTR 20 4 3 TXD 2 3 4 CD 8 1 5 GND 7 5 6 RXD 3 2 7 DSR 6 6 8 CTS 5 8 Enlarged A side Enlarged A side DB25 Female DB25 Female 8P8C Plug 8P8C Plug Enlarged B side Enlarged B side DB9 Female DB9 Female En...

Page 68: ...Direction DB 25 DB 9 1 RTS 4 7 2 DTR 20 4 3 TXD 2 3 4 CD 8 1 5 GND 7 5 6 RXD 3 2 7 DSR 6 6 8 CTS 5 8 Enlarged B side Enlarged B side Enlarged A side Enlarged A side Enlarged C side Enlarged C side DB25 Male DB25 Male Label Label DB9Male DB9Male 8P8C Plug 8P8C Plug Table 49 RJ 45 MDI Port Pin outs Pinout 10BASE T 100BASE TX 1000BASE T Signal Function Signal Function 1 Tx Send data BIDA Send data to...

Page 69: ...7 Reserved BIDD Send data to direction D 8 Reserved BIDD Receive data from direction D Table 50 RJ 45 MDI X Port Pinouts Pinout 10BASE T 100 BASE TX 1000BASE T Signal Function Signal Function 1 Rx Receive data BIDB Send data to direction B 2 Rx Receive data BIDB Receive data from direction B 3 Tx Send data BIDA Send data to direction A 4 Reserved BIDD Receive data from direction D 5 Reserved BIDD ...

Page 70: ...70 APPENDIX A SWITCH 7750 CABLES Figure 43 illustrates the MT RJ fiber optic cable connector Figure 43 The MT RJ Fiber Connector Figure 44 illustrates the LC connector Figure 44 LC Connector ...

Page 71: ... 3Com Extended Warranty and Professional Services is available at http www 3com com Contact your authorized 3Com reseller or 3Com for additional product and support information Troubleshoot Online You will find support tools posted on the 3Com web site at http www 3com com 3Com Knowledgebase helps you troubleshoot 3Com products This query based interactive tool is located at http knowledgebase 3co...

Page 72: ...uct directly to 3Com for repair you must first obtain a return authorization number RMA Products sent to 3Com without authorization numbers clearly marked on the outside of the package will be returned to the sender unopened at the sender s expense If your product is registered and under warranty you can obtain an RMA number online at http eSupport 3com com First time users will need to apply for ...

Page 73: ...ao Ecuador Dominican Republic 1 800 988 2112 0 810 444 3COM 1 800 998 2112 1 800 998 2112 1 800 998 2112 52 5 201 0010 1 800 998 2112 1 800 998 2112 0800 13 3COM 1 800 998 2112 AT T 800 998 2112 AT T 800 998 2112 AT T 800 998 2112 1 800 998 2112 AT T 800 998 2112 AT T 800 998 2112 Guatemala Haiti Honduras Jamaica Martinique Mexico Nicaragua Panama Paraguay Peru Puerto Rico Salvador Trinidad and To...

Page 74: ...74 APPENDIX B OBTAINING SUPPORT FOR YOUR SWITCH ...

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