3Com Switch 7754 Installation Manual Download

Page: 30 / 80

HAPTER

1: S

WITCH

7750 C

OMPONENTS

8-port 1000BASE-X GBIC

Module

The 8-port 1000BASE-X GBIC module provides 8 external GBIC module ports. A
GBIC module is used for each data receiving/transmitting channel. The following
modules are available:

■

3CGBIC91

■

3CGBIC92

■

3CGBIC97

Figure 26 illustrates the 8-port 1000BASE-X GBIC module.

Figure 26

8-Port 1000BASE-X GBIC Module

Every GBIC port has a LED, as shown in Figure 27.

Figure 27

Front Panel of the 8-Port 1000BASE-X GBIC Module

GBIC port

GBIC port LED

SFP-GE-LH70-SM1590
-CW

1590nm

9/125 µm single mode
optical fiber cable

70km (43 mi)

SFP-GE-LH70-SM1610
-CW

1610nm

9/125 µm single mode
optical fiber cable

70km (43 mi)

SFP-GE-T

RJ45

100m (328 ft)

Table 38

SFP Cables for the

12-port 1000BASE-X SFP and 4-port

10/100/1000BASE-T Module

SFP module

Central
wavelength Connector Matching cable

Maximum
transmission
distance

3C16858

Summary of Contents for Switch 7754

Page 1: ...m com 3Com Family Switch 7750 Installation Guide 3C16896 8 slot AC Chassis 3C16897 8 slot DC Chassis 3C16895 7 slot Chassis 3C16894 4 slot Chassis and associated modules Part No 10016428 AB Published December 2007 ...

Page 2: ...d commercial license for the Software Technical data is provided with limited rights only as provided in DFAR 252 227 7015 Nov 1995 or FAR 52 227 14 June 1987 whichever 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 regist...

Page 3: ... SWITCH 7750 Preparing to Install 37 General Site Requirements 38 Installation Checklist 39 Installing the Chassis 40 Installing the Cabling Rack 40 Installing a Module 41 Installing a Submodule 41 Connecting the Ground Wire 42 Connecting and Configuring Power 42 Installing the Fan Assembly 45 Installing Cables 45 Installing Cabling 47 Post installation Checklist 48 CONFIGURING THE SWITCH 7750 Con...

Page 4: ...RE Replacing a Power Module 69 Replacing a Power Supply 70 Replacing I O Modules 71 Replacing the Fan Assembly 71 OBTAINING SUPPORT FOR YOUR SWITCH Register Your Product to Gain Service Benefits 73 Purchase Value Added Services 73 Troubleshoot Online 73 Access Software Downloads 73 Contact Us 74 Telephone Technical Support and Repair 74 SWITCH 7750 CABLES Console Cable 77 AUX Cable 77 Electrical P...

Page 5: ...ng manuals offer additional information necessary for managing your Switch 7750 Switch 7750 Command Reference Guide Provides detailed descriptions of command line interface CLI commands that you require to manage your Switch 7750 Switch 7750 Configuration Guide Describes how to configure your Switch 7750 using the supported protocols and CLI commands Switch 7750 Release Notes Contains the latest i...

Page 6: ...6 ABOUT THIS GUIDE ...

Page 7: ...ckplane 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 management of the power supply for th...

Page 8: ...owing functions 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 Ethe...

Page 9: ...ions 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 10: ...BASE X SFP Ports The PoE Fabric 96 provides four 1000 Mbps full duplex SFP ports Table 4 describes the SFP cables for these ports Table 8 describes the LEDs of the SFP ports Table 4 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 multimode...

Page 11: ...specifications See Electrical Port Connector on page 78 for an illustration of the RJ 45 connector and MDI MDI X pinout details Table 8 describes the LEDs of the Ethernet port Table 6 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 12: ...ta is being transmitted or received Green flashing Data is being transmitted or received Table 8 Ethernet Port LEDs continued LED Description Table 9 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...

Page 13: ...net port 2 Ethernet port LEDs Table 12 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 or received Table 13 4 Port 1000BASE X GBIC Submodule Specifications Optional GBIC Module Central Wavelength Connector Type Interface Fiber Specifications Max Transmission Distance 1000BASE ...

Page 14: ...168916 12 port 1000BASE X SFP and 4 port 10 100 1000BASE T Module 3C186917 8 port 1000BASE X GBIC Module 3C16858 8 port 10 100 1000BASE T GE Module 3C16859 100Base FX SFP mode 3C16865915 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 E...

Page 15: ... module Figure 7 Front Panel of the 48 port 10 100BASE T FE PoE Module 1 Ethernet port 2 Ethernet port LED Table 22 describes the 48 port 10 100BASE T FE PoE Module LEDs Table 23 describes the specifications for the 48 port 10 100BASE T FE PoE module Table 16 module LED LED Description LINK ACT Green The port is connected Off The port is not connected Green flashing Data is being transmitted or re...

Page 16: ... LEDs of the 48 port 10 100 1000BASE T PoE module Figure 9 Front Panel of the 48 port 10 100 1000BASE T PoE Module 1 Ethernet port 2 Ethernet port LED Port transmission speed 10 100 Mbps half full duplex MDI MDI X auto sensing Cables and maximum transmission distance 100 m 328 ft Maximum power each port provides 15 4 W Compliance IEEE802 3 IEEE802 3u IEEE802 3x IEEE802 3ad IEEE802 1p IEEE802 1D IE...

Page 17: ...T Green The port is connected Off The port is not connected Green flashing Data is being transmitted or received Table 19 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...

Page 18: ...details Table 20 48 Port 10 100BASE TX FE module LED LED Description LINK ACT Green The port is connected Off The port is not connected Green flashing Data is being transmitted or received Table 21 Specifications for the 48 Port 10 100BASE TX FE 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 75 W Conne...

Page 19: ...describes the specifications of the 48 port 10 100 1000BASE T module Table 22 48 port 10 100 1000BASE T Module LED LED Description LINK ACT Green The port is connected Off The port is not connected Green flashing Data is being transmitted or received Table 23 Specifications for the 48 port 10 100 1000BASE T Module Specification Description CPU MPC8241 BootROM 512 KB SDRAM 128 M Dimensions L X W 36...

Page 20: ... 48 port 100BASE X SFP module LEDs Table 25 describes the specifications of the 48 port 100BASE X SFP module Compliance 1EEE 802 3ab 1EEE 802 3 1EEE 802 3u 1EEE 802 3x 1EEE 802 1p 1EEE 802 1D 1EEE 802 1Q 1EEE 802 1X 1EEE 802 1s 1EEE 802 1w Table 23 Specifications for the 48 port 10 100 1000BASE T Module continued Specification Description Table 24 48 port 100BASE X SFP Module LED LED Description L...

Page 21: ...BASE FX SM VR SFP Port transmission speed 100 Mbps full duplex Compliance 1EEE 802 3 1EEE 802 3u 1EEE 802 3x 1EEE 802 3ad 1EEE 802 1p 1EEE 802 1D 1EEE 802 1Q 1EEE 802 1X 1EEE 802 1s 1EEE 802 1w Table 26 Cables for the 48 port 100BASE X SFP Module SFP module Central wave length Connector Matching cable Maximum transmission distance 100BASE FX MM SFP 1310nm LC multimode optical fiber cable 2 km 1 2 ...

Page 22: ...h an MT RJ connector and a central wavelength of 1300 nm Table 28 describes the specifications of the 24 port 100BASE FX MMF FE module Table 27 24 Port 100BASE FX MMF FE Module LEDs LED Description LINK ACT Green The port is connected Off The port is not connected Green flashing Data is being transmitted or received Table 28 Specifications for the 24 Port 100BASE FX MMF FE Module Specification Des...

Page 23: ...0BASE T Module 1 Ethernet port 2 Ethernet port LED Table 29 describes the 20 port 10 100 1000BASE T module LEDs 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 28 Specifications for the 24 Port 100BASE FX MMF FE Module continued Specification Description Table 29 20 Port 10 100 1000BASE ...

Page 24: ...BASE X SFP module Figure 21 Front Panel of the 20 Port 1000BASE X SFP Module Table 30 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: ...000BASE X SFP Module LEDs LED Description LINK ACT Off The port is not operating On The port is operating Green flashing The port is transmitting or received data Table 32 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 por...

Page 26: ...cifications for the 12 port 10 100 1000BASE T and 4 port 1000BASE X SFP Module Specification Description CPU MPC8245 BootROM 512 KB SDRAM 256 MB Dimensions L x W 366 7 x 340 mm 14 5 x 13 4 in Power consumption 45 W Connector SFP socket Number of ports 12 10 100 1000BASE T Ethernet ports 4 1000BASE X SFP Ethernet ports Transmission rate 1000 Mbps full duplex optical port 10 Mbps half full duplex el...

Page 27: ... fiber cable 10 km 6 mi SFP GE LH40 SM1310 40 km about 25 mi SFP GE LH40 SM1550 1550nm LC 9 125 µm single mode optical fiber cable 40 km about 25 mi SFP GE LH70 SM1550 70 km 43 mi SFP GE LH100 SM155 0 100km 62 mi SFP GE LH70 SM1470 CW 1470nm LC 9 125 µm single mode optical fiber cable 70km 43 mi SFP GE LH70 SM1490 CW 1490nm LC 9 125 µm single mode optical fiber cable 70km 43 mi SFP GE LH70 SM1510 ...

Page 28: ...0BASE T module LEDs Table 37 lists specifications of the 12 port 1000BASE X SFP and 4 port 10 100 1000BASE T module Table 36 12 port 1000BASE X SFP and 4 port 10 100 1000BASE T Module LEDs LED Description LINK ACT Off The port is not operating On The port is operating Green flashing The port is transmitting and receiving data Table 37 Specifications for the 12 port 1000BASE X SFP and 4 port 10 100...

Page 29: ... optical fiber cable 275 m 902 ft SFP GE LX SM1310 A 1310nm LC 9 125 µm single mode optical fiber cable 10 km 6 mi SFP GE LH40 SM1310 40 km about 25 mi SFP GE LH40 SM1550 1550nm LC 9 125 µm single mode optical fiber cable 40 km about 25 mi SFP GE LH70 SM1550 70 km 43 mi SFP GE LH100 SM155 0 100km 62 mi SFP GE LH70 SM1470 CW 1470nm LC 9 125 µm single mode optical fiber cable 70km 43 mi SFP GE LH70 ...

Page 30: ...ort 1000BASE X GBIC Module Every GBIC port has a LED as shown in Figure 27 Figure 27 Front Panel of the 8 Port 1000BASE X GBIC Module 1 GBIC port 2 GBIC port LED SFP GE LH70 SM1590 CW 1590nm LC 9 125 µm single mode optical fiber cable 70km 43 mi SFP GE LH70 SM1610 CW 1610nm LC 9 125 µm single mode optical fiber cable 70km 43 mi SFP GE T RJ45 100m 328 ft Table 38 SFP Cables for the 12 port 1000BASE...

Page 31: ...dule LEDs LED Description LINK Off The link is not connected Green The link is connected ACT Off No data is being transmitted or received Green flashing Data is being transmitted or received Table 40 GBIC Module Port Cables GBIC Module Type Central Wave Length 3CGBIC91 850 nm 3CGBIC92 1550 nm 3CGBIC97 1550 nm Table 41 Specifications for the 8 Port 1000BASE X GBIC Module Specification Description C...

Page 32: ...s of the 8 port 10 100 1000BASE T GE module are described in Table 43 Table 42 8 Port 10 100 1000BASE 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 or received Green flashing Data is being transmitted or received Table 43 Specifications for the 8 Port 10 100 1000BASE T GE Module Specification Description CPU MPC...

Page 33: ... power module LEDs on the Fabric display alarm information for the power module that is not working The power distribution box for the 7 slot and 8 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 ...

Page 34: ... W of power to the connected PD Fan Assembly The fan assembly 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 8 slot chassis 3C16855 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 ...

Page 35: ...tions 4 port 1000BASE X GBIC 4 port 10 100 1000BASE T I O module options 48 port 10 100BASE T FE PoE Module 48 port 10 100 1000BASE T PoE Module 48 port 10 100BASE TX FE Module 48 port 10 100 1000BASE T Module 48 port 100BASE X SFP Module 20 Port 10 100 1000BASE T Module 20 Port 1000BASE X SFP Module 12 port 10 100 1000BASE T and 4 port 1000BASE X SFP Module 12 port 1000BASE X SFP and 4 port 10 10...

Page 36: ...Hz DC 48 V to 60 V PoE input voltage 46 V to 55 V 55 0 A Max power consumption all components installed 350 W 650 W 800 W Environment temperature and humidity 0 to 40 0 C 32 to 104 0 F and 10 to 90 Table 46 Specifications for the Switch 7750 System continued Item 4 Slot Chassis 7 Slot Chassis 8 Slot Chassis ...

Page 37: ...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 38: ...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 39: ...phone 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 cabling...

Page 40: ...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 41: ...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 42: ...hould be less than 1 ohm Connecting and Configuring Power The Switch 7750 requires power connection from the AC or DC 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 43: ...d fasten the mounting screws 7 Connect the other end of the DC power cord to the connection terminal for power input to the switch Figure 33 Connecting the DC Power Cord 1 48 V input 2 Return 3 Grounding screw 4 Fastening screw Configuring AC Power Sources The dual AC input power module uses an internal switch that automatically selects the primary power source However to select the primary power ...

Page 44: ...1 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 35 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 Ins...

Page 45: ...s 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 77 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 switch is...

Page 46: ...000BASE X 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 79 for illustrations of the fiber optic cable connectors Single mode optical fiber cable is used for external connections of the single mode optical p...

Page 47: ... 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 times its ...

Page 48: ...t you have turned off the power before checking your installation Improper connections can injure people or damage components of the switch Table 48 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 49 Installation Checklist Item Normal Abnormal Remarks Antistatic wrist strap...

Page 49: ...nnected to the switch console port using a console cable Figure 36 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 50: ...e dialog box shown in Figure 38 displays Select the serial port to be used from the Connect using dropdown menu Figure 38 Properties Dialog Box 3 After selecting serial ports click OK The port shown in Figure 39 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 51: ...log Box 4 Click OK The HyperTerminal dialogue box displays as shown in Figure 40 Figure 40 HyperTerminal Window 5 Select Properties 6 In the Properties dialog box select the Settings tab shown in Figure 41 7 Select VT100 in the Emulation dropdown menu 8 Click OK ...

Page 52: ...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 53: ...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 54: ...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 55: ...re image of a Switch 7750 use one of the following procedures Upgrading Software with FTP on page 55 Upgrading Software Using The BOOT Menu page 56 Upgrading Software Using Xmodem page 60 Upgrading Software Using TFTP page 62 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...

Page 56: ...er primary sw7750003 app The specified 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 modu...

Page 57: ...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 58: ... 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 59: ...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 60: ...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 61: ...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 62: ...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 63: ...w7750003 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 specified file will be booted next time SW7750 reboot This command will reboot the system Continue Y N y Upgrading Software in the Secondary Fabric of the 8 slot Chassis Af...

Page 64: ...r Boot Menu The contents displayed on the terminal can vary with different versions of Boot ROM If you press Ctrl 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 Passwo...

Page 65: ...Using the BOOT Menu 65 CAUTION While using the switch please keep in mind the modified BOOTROM password ...

Page 66: ...66 CHAPTER 4 MAINTAINING SOFTWARE ...

Page 67: ... 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 68: ... 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 50 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 69: ... 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 70: ...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 71: ...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 72: ...72 CHAPTER 6 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 73: ... 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 74: ...ct 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 a...

Page 75: ...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 76: ...76 CHAPTER B OBTAINING SUPPORT FOR YOUR SWITCH ...

Page 77: ...onnectors Figure 44 The Console cable Table 53 lists console cable pin outs AUX Cable Figure 45 illustrates the AUX cable Table 53 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 78: ...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 55 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 79: ...7 Reserved BIDD Send data to direction D 8 Reserved BIDD Receive data from direction D Table 56 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 80: ...80 APPENDIX A SWITCH 7750 CABLES Figure 48 illustrates the MT RJ fiber optic cable connector Figure 48 The MT RJ Fiber Connector Figure 49 illustrates the LC connector Figure 49 LC Connector ...

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