Page 2 - Com Corporation
3Com Corporation 350 Campus Drive Marlborough, MA 01752-3064 Copyright © 2005, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written p...
Page 3 - ONTENTS; Fabric 32 Submodules 14
C ONTENTS A BOUT T HIS G UIDE Conventions 7Related Documentation 8 S WITCH 7750 C OMPONENTS Switch Chassis 9Switch Backplane 9Fabric Module 10 Submodule Slot 11Fixed Ports 12Module LEDs 14Power LEDs 14Fan LED 14Reset Button 14 Fabric 32 Submodules 14 4-Port 1000BASE-X-GBIC Submodule 144-Port 10/100/...
Page 5 - Troubleshooting the Configuration 65
Removing the AC Power Module 61Installing the AC Power Module 61 Replacing a Power Supply 62Replacing I/O Modules 63Replacing the Fan Assembly 63 T ROUBLESHOOTING Troubleshooting the Configuration 65 No information is displayed on the terminal 65The display characters are illegible 65 Troubleshootin...
Page 7 - This guide describes the 3Com; Conventions; Screen displays
A BOUT T HIS G UIDE This guide describes the 3Com ® Switch 7750 and how to install hardware, configure and boot software, and maintain software and hardware. This guide also provides troubleshooting and support information for your switch. This guide is intended for qualified Service personnel who a...
Page 8 - Switch 7750 Command Reference Guide; italics; bold
8 A BOUT T HIS G UIDE Related Documentation The following 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. ■ Swit...
Page 9 - Switch Chassis; Table 3; Hardware Features of the Switch 7750 Models
1 S WITCH 7750 C OMPONENTS The chapter describes the following Switch 7750 components: ■ Switch Chassis ■ Switch Backplane ■ Fabric Module ■ Fabric 32 Submodules ■ I/O Modules ■ Power Module ■ Power Distribution ■ External PoE Power System ■ Fan Assembly ■ Switch 7750 Specifications Switch Chassis T...
Page 10 - Fabric Module; There are two Fabric modules for the Switch 7750:; Figure 1; Figure 2 illustrates the front panel of the Fabric 64.; Figure 2
10 C HAPTER 1: S WITCH 7750 C OMPONENTS Fabric Module There are two Fabric modules for the Switch 7750: ■ Fabric 64 (3C16857 or 3C16857R) ■ Fabric 32 (3C16872) ■ PoE Fabric 96 (3C16886) The Fabric 64 and Fabric 32 are not interchangeable. You can install the Fabric 32 only in a 4-slot chassis. You c...
Page 11 - Figure 3 illustrates the front panel of the Fabric 32.; Figure 3; Table 4 lists Fabric specifications.; Submodule Slot; Table 4
Fabric Module 11 5 Fan LEDs 6 Power module LEDs 7 I/O module LEDs Figure 3 illustrates the front panel of the Fabric 32. Figure 3 Fabric 32 1 Submodule slot 2 Console port 3 Ethernet port 4 Ethernet port LEDs 5 Fan LEDs 6 Power LEDs 7 I/O module LEDs 8 Reset button Table 4 lists Fabric specification...
Page 12 - Fixed Ports; The Switch 7750 Fabric modules provide the following fixed ports:; LC
12 C HAPTER 1: S WITCH 7750 C OMPONENTS ■ 4-port 1000BASE-X-GBIC submodule ■ 4-port 10/100/1000BASE-T submodule For more information on these submodules, see “Fabric 32 Submodules”on page 14. Fixed Ports The Switch 7750 Fabric modules provide the following fixed ports: ■ Compact Flash (CF) Port ■ 10...
Page 13 - Console Port; Table 7 lists console port specifications.; Ethernet Port; Table 8 lists Ethernet port specifications.
Fabric Module 13 Console Port The console port is connected to the configuration terminal using an RJ-45 connector. You can use the console port for system debugging, configuration, maintenance, management, and loading application files. The console port can also be connected to a modem for function...
Page 14 - Module LEDs; Fan LEDs show the status of the fan frame, as described in Table 12.; Reset Button; The reset button resets the entire system.; Fabric 32 Submodules; Submodule
14 C HAPTER 1: S WITCH 7750 C OMPONENTS Module LEDs The module LEDs show the status of the I/O modules, as described in Table 10. Power LEDs PWR1, PWR2, and PWR3 LEDs show the status of the power modules, as described in Table 11. Fan LED Fan LEDs show the status of the fan frame, as described in Ta...
Page 15 - Figure 4; Figure 5; LED
Fabric 32 Submodules 15 Figure 4 4-Port 1000BASE-X-GBIC Submodule Ethernet GBIC port 2 Ethernet GBIC port LED Table 13 describes the 4-port 1000BASE-X-GBIC submodule LEDs. Table 14 lists the specifications for each of the 4-port 1000BASE-X-GBIC submodule. 4-Port 10/100/1000BASE-T Submodule The 4-Por...
Page 16 - Consider the following when selecting I/O modules:
16 C HAPTER 1: S WITCH 7750 C OMPONENTS Table 15 describes the 4-port 10/100/1000BASE-T submodule LEDs. Table 16 lists specifications of the 4-port 10/100/1000BASE-T submodule. See “Electrical Port Connector” on page 68 for an illustration of the RJ-45 connector and MDI/MDI-X pinout details. I/O Mod...
Page 17 - PoE Module
I/O Modules 17 48-port 10/100BASE-T FE PoE Module The 48-port 10/100BASE-T FE PoE module provides 48 10/100 Mbps auto-sensing Ethernet ports that provide a remote power supply to powered devices Figure 12illustrates the 48-port 10/100BASE-T FE PoE module. Figure 6 48-port 10/100BASE-T FE PoE Module ...
Page 18 - Module
18 C HAPTER 1: S WITCH 7750 C OMPONENTS 48-port 10/100/1000BASE-T PoE Module The 48-port 10/100/1000BASE-T PoE module provides 48 10/100/1000 Mbps auto-sensing Ethernet ports that provide a remote power supply to powered devices. Figure 12illustrates the 48-port 10/100/1000BASE-T PoE module. Figure ...
Page 19 - Auto-sensing FE Module; Specification
I/O Modules 19 Table 24 describes the specifications of the 48-port 10/100/1000BASE-T PoE module. 48-port 10/100BASE-T Auto-sensing FE Module The 48-port 10/100BASE-T Auto-sensing FE module provides 48 external 100Mbps Ethernet electrical ports. Figure 10 illustrates the 48-port 10/100BASE-T Auto-se...
Page 22 - MMF FE Module; Each 100 Mbps optical port has a green LED, as shown in Figure 15.
22 C HAPTER 1: S WITCH 7750 C OMPONENTS 24-port 100BASE-FX MMF FE Module The 24-port 100BASE-FX MMF FE module provides 24 100 Mbps multi-mode Ethernet optical port service channels. Figure 14 illustrates the 24-port 100BASE-FX MMF FE module. Figure 14 24-Port 100BASE-FX MMF FE Module Each 100 Mbps o...
Page 26 - Every GBIC port has a LED, as shown in Figure 21.
26 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 20 8-Port 1000BASE-X GBIC Module Every GBIC port has a LED, as shown in Figure 21. Figure 21 Front Panel of the 8-Port 1000BASE-X GBIC Module 1 GBIC port 2 GBIC port LED Table 31 describes the 8-Port 1000BASE-X GBIC module LEDs. The cables for each of t...
Page 29 - Power Module
Power Module 29 Figure 25 Front Panel of the 1-Port 10GBASE-R-XENPAK Module 1 XENPAK port 2 XENPAK port LEDs Table 36 describes the 1-port 10GBASE-R-XENPAK module LEDs. Table 37 lists specifications of the 1-port 10GBASE-R-XENPAK module. Power Module Only one AC power module is required for the 4-sl...
Page 30 - Power Distribution; Figure 26 illustrates the Switch 7750 PoE power system.; Switch 7750 PoE Power Supply; The Switch 7750 supports PoE external input power up to 2400 W.; Specifications for Switch 7750 Power Modules; Input
30 C HAPTER 1: S WITCH 7750 C OMPONENTS Table 38 describes the specifications of the Switch 7750 power module. Power Distribution The Switch 7750 power distribution box is installed on the chassis floor in the back of the chassis. It filters, connects, disconnects and distributes electrical current ...
Page 31 - Fan Assembly; Figure 27 illustrates the fan assembly for the 7-slot chassis.; Fan Assembly; Input voltage
Fan Assembly 31 Table 39 describes the capabilities of the Switch 7750 PoE power module. The Switch 7750 provides power through Ethernet ports on the PoE-supported I/O modules, supporting the maximum distance of 100 m (328 ft.). When the Switch 7750 provides power remotely, each Ethernet port can pr...
Page 32 - Item
32 C HAPTER 1: S WITCH 7750 C OMPONENTS Switch 7750 Specifications Table 40 provides detailed information about features of the Switch 7750. Table 40 Specifications for the Switch 7750 System Item 4-Slot Chassis 7-Slot Chassis Dimensions (W x H x D) 436 x 352.8 x 480 mm (17 x 14 x 19 in) 436 x 486.2...
Page 33 - Preparing to Install; General Safety
2 I NSTALLING T HE S WITCH 7750 The following sections describe how to prepare and install the components of the Switch 7750: ■ Preparing to Install ■ General Site Requirements ■ Installation Checklist ■ Installing the Chassis ■ Installing the Cabling Rack ■ Installing a Module ■ Installing a Submod...
Page 34 - Electrical Safety; Do not move the switch alone. Work with another person.; Laser Safety; Never look at the transmit LED/laser through a magnifying device; Temperature and Humidity
34 C HAPTER 2: I NSTALLING T HE S WITCH 7750 ■ During the installation, wear an antistatic wrist strap and antistatic gloves. See “Static Electricity” on page 35 for additional information on preventing static. WARNING: Follow local safety regulations when performing any operation with the Switch 77...
Page 35 - Static Electricity; Installation Checklist; Temperature and Humidity Requirements; Temperature
Installation Checklist 35 Static Electricity To prevent damage caused by the static electricity, ensure that: ■ The equipment is grounded ■ The equipment room is dust-proof ■ Adequate temperature and humidity conditions are maintained. ■ The operator wears an antistatic wrist strap while handling th...
Page 36 - Installing the Chassis; Installing in a Standard
36 C HAPTER 2: I NSTALLING T HE S WITCH 7750 ■ Tools ■ Phillips screwdriver ■ Flat-head screwdriver ■ Antistatic wrist strap ■ Cables ■ Console cable ■ AUX cable ■ Power cord and chassis ground wire ■ Interface cables for the selected interface modules ■ Equipment ■ The switch ■ Ethernet 100BASE-T H...
Page 37 - Installing a Module; Wear an antistatic wrist strap.
Installing a Module 37 Installing a Module To install a module: 1 Wear an antistatic wrist strap. 2 Remove the blanking plate from the chassis slot and save it for future use. 3 Hold the ejector levers of the module with both hands and push them outward. 4 Align the module with the guides in the cha...
Page 38 - Connecting AC Power; Power Cord Connection; For surge protection, the power should be channelled through an
38 C HAPTER 2: I NSTALLING T HE S WITCH 7750 Connecting the Ground Wire To connect the ground wire: 1 Wear an antistatic wrist strap. 2 Remove the screw from the grounding hole in the switch chassis. 3 Set the ground wire connector around the grounding screw. 4 Fasten the grounding screw in the hole...
Page 39 - Connecting and Configuring Power; Connecting the PoE; Follow these steps to connect the power cord from the PoE rack:; Back of the PoE Rack; For detailed instructions on how to install the PoE rack, see the
Connecting and Configuring Power 39 Connecting the PoE Power Cord Follow these steps to connect the power cord from the PoE rack: 1 Loosen the mounting screw of the PoE terminal block on the rear panel of the switch. 2 Insert the -48V OT terminal of the DC power cord to the NEG (-) terminal of the s...
Page 40 - To avoid injury, do not touch any naked wire, terminal, or any other; Installing Cables; Connecting the Console
40 C HAPTER 2: I NSTALLING T HE S WITCH 7750 Installing the Fan Assembly To install the fan: 1 Wear an antistatic wrist strap. 2 Remove the fan frame from the pack. 3 Hold the ejector levers on the fan frame with both hands and push them outward. 4 Align the fan with the guides in the chassis and sl...
Page 41 - Connecting Module; Use the following steps to connect the port:; Connecting Optical Fiber Cables; The following modules require fiber optic cables:; SC fiber connector; To attach the SC fiber connector:
Installing Cables 41 Connecting Module Cables This section describes how to connect electrical and optical cables. Connecting Electrical Port Cables The 48-port 10/100BASE-T module and 8-port 10/100/1000BASE-T module require a RJ-45 connector and category-5 twisted pair cable. See “Electrical Port C...
Page 42 - When connecting an SC fiber connector, the switch TX must be; MT-RJ fiber connector
42 C HAPTER 2: I NSTALLING T HE S WITCH 7750 CAUTION: When connecting an SC fiber connector, the switch TX must be connected to the RX of the device on the network, and the switch RX must be connected to the TX of the device on the network. MT-RJ fiber connector The 24-port 100BASE-FX MMF FE module ...
Page 43 - Post-installation Checklist; Confirm that you have turned off the power before checking your; Cable Bundle Diameter
Post-installation Checklist 43 Follow the parameters defined in Table 42 for binding cables with ties. Post-installation Checklist After you install your switch, use the checklist in Table 43 to verify that your switch operates correctly. WARNING: Confirm that you have turned off the power before ch...
Page 45 - Connecting the Switch 7750 to a PC; HyperTerminal
3 C ONFIGURING THE S WITCH 7750 The following sections of this chapter describe how to configure and boot the Switch 7750: ■ Configuring the Switch 7750 and a Local Terminal ■ Setting Terminal Parameters ■ Booting the Switch 7750 Configuring the Switch 7750 and a Local Terminal Configure the local t...
Page 46 - Connection Description Dialog Box; Enter the name of the new connection in the; Properties Dialog Box; After selecting serial ports, click
46 C HAPTER 3: C ONFIGURING THE S WITCH 7750 Figure 32 Connection Description Dialog Box 2 Enter the name of the new connection in the Name field and click OK . The dialog box, shown in Figure 33 displays. Select the serial port to be used from the Connect using dropdown menu. Figure 33 Properties D...
Page 47 - OK; HyperTerminal Window; Properties
Setting Terminal Parameters 47 Figure 34 COM1 Properties Dialog 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 Emu...
Page 48 - Settings Tab; Before powering on the Switch 7750, verify that:
48 C HAPTER 3: C ONFIGURING THE S WITCH 7750 Figure 36 Settings Tab Booting the Switch 7750 Before 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 prope...
Page 50 - Enter
50 C HAPTER 3: C ONFIGURING THE S WITCH 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 - Upgrading Software; Upgrading the Software; ftp; Now user privilege is 3 level, and just commands which level is
4 M AINTAINING S OFTWARE This chapter covers the following topics: ■ Upgrading Software ■ Lost Passwords ■ Using the BOOT Menu Upgrading Software The following sections describe how to upgrade software on your Switch 7750: ■ Upgrading the Software Image ■ Upgrading Software with FTP ■ Upgrading Soft...
Page 52 - anonymous
52 C HAPTER 4: M AINTAINING S OFTWARE Trying ... Press CTRL+K to abort Connected. 220 3Com 3CDaemon FTP Server Version 2.0 User(none): anonymous 331 User name ok, need password Password: xxxxxxx 230 User logged in [ftp] bin 200 Type set to I. [ftp] get sw7750003.app 200 PORT command successful. 150 ...
Page 53 - To access the BOOT Menu, press; : Display all files in flash; Downloading an Application to Flash Memory
Upgrading Software 53 FAB96 self testing.......................................... SDRAM Data lines Selftest.................................OK! SDRAM Address lines Selftest..............................OK! SDRAM fast selftest.......................................OK! Please check LEDs.................
Page 54 - Selecting the Application File for the Boot
54 C HAPTER 4: M AINTAINING S OFTWARE Selecting the Application File for the Boot If the Switch 7750 primary image fails because of a CRC error or a file format error, you can configure the system to find the backup image you select to boot from. To select the image file that you want the system to ...
Page 55 - No Backup Image
Upgrading Software 55 The file you selected is SW7750-V300R-.app, are you sure? Yes or No(Y/N) y On reboot,SW7750-V300R-.app will become the default application file to boot! 7 Type Y to run the primary image: Do you want to run snec400.app now? Yes or No(Y/N)? Y No Backup Image If you do not enter ...
Page 56 - display boot
56 C HAPTER 4: M AINTAINING S OFTWARE Assert at file: 'vfs_flsh.c', Line: 4549 There are 3 files in this package SRPU app file error! backup boot file is corrupted! Select a file to boot from! the num is 1 the num is 2 File SW7750-V300RE-8016.app is selected for autoBoot: backup file is SW7750-V300R...
Page 58 - Send File dialog box; Xmodem; Xmodem File Send Dialog Box
58 C HAPTER 4: M AINTAINING S OFTWARE Figure 37 Send File dialog box 11 Change the protocol name for the download to Xmodem . 12 Click Send . The dialog box shown in Figure 38 displays. Figure 38 Xmodem File Send Dialog Box 13 After the download is complete, the system interface is shown, as follows...
Page 59 - A TFTP Server program is shipped on the CDROM with the Switch 7750.; ping; To upgrade using TFTP:; boot boot-loader primary filename; The following example illustrates this procedure:; Transfer file in binary mode.; reboot; Lost Passwords
Lost Passwords 59 A TFTP Server program is shipped on the CDROM with the Switch 7750. Before you upgrade: ■ Verify that there is a connection between the TFTP server and the Switch 7750 (use the ping command.) ■ Verify that the TFTP server is set up according to the manufacturer's instructions and t...
Page 60 - If you press; While using the switch, please keep in mind the modified BOOTROM
60 C HAPTER 4: M AINTAINING S OFTWARE CPU type : MPC8245 CPU Clock Speed : 400Mhz BUS Clock Speed : 66Mhz BOOT_FLASH type : M29W040B Flash Size : 32MB Memory Size : 256MB FAB96 self testing.......................................... SDRAM Data lines Selftest.................................OK! SDRAM ...
Page 61 - Removing the AC Power
5 M AINTAINING H ARDWARE This chapter covers the following topics: ■ Replacing a Power Module ■ Replacing a Power Supply ■ Replacing I/O Modules ■ Replacing the Fan Assembly The procedures in this chapter should be performed by trained service personnel only. Replacing a Power Module To replace a po...
Page 62 - Do not power on the switch until you reconnect all the components.
62 C HAPTER 5: M AINTAINING H ARDWARE 6 Connect the power cords to separate AC power sources on separate power grids or to a UPS/backup power system. WARNING: Do not power on the switch until you reconnect all the components. Replacing a Power Supply To replace a power supply, you need: ■ An antista...
Page 63 - Replacing I/O Modules; To avoid injury, do not touch any naked wire, terminal, or any part of
Replacing I/O Modules 63 Replacing I/O Modules To replace an I/O module, you need: ■ An antistatic wrist strap ■ A Screwdriver To remove a module: 1 Remove all the cables from the module to be removed. 2 Loosen the captive screws. 3 Hold the ejector levers on the module with both hands, and press th...
Page 64 - If the fan fails, replace it with a new one without delay before
64 C HAPTER 5: M AINTAINING H ARDWARE 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 - ROUBLESHOOTING; No information is
6 T ROUBLESHOOTING This chapter covers the following topics: ■ Troubleshooting the Configuration ■ Troubleshooting Power ■ Troubleshooting the Fan ■ Troubleshooting the Modules The simplest way to diagnose a fault is to check the system status LEDs on the Fabric modules. In addition, with the Device...
Page 66 - Every heat dissipation fan is working normally.
66 C HAPTER 6: T ROUBLESHOOTING Table 44 describes power LEDs on the Fabric. (continued) Troubleshooting the Fan If the fan OK LED is off, check that: ■ The fan has been installed in the correct position for normal communication with the backplane. ■ Every heat dissipation fan is working normally. ■...
Page 67 - Console Cable; Signal
A S WITCH 7750 C ABLES This appendix covers the following types of cables and connectors: ■ Console Cable ■ AUX Cable ■ Electrical Port Connector ■ Optical Fiber Cable Connectors Console Cable Figure 39 illustrates the console cable and connectors. Figure 39 The Console cable Table 47 lists console ...
Page 68 - Figure 41 illustrates the RJ-45 connector.
68 A PPENDIX A: S WITCH 7750 C ABLES Figure 40 The AUX Cable Table 48 lists the AUX cable pin-outs. Electrical Port Connector Figure 41 illustrates the RJ-45 connector. Figure 41 The RJ-45 Connector Table 49 lists RJ-45 MDI port pin-outs. Table 48 AUX Cable Pin-outs RJ-45 Signal Direction DB-25 DB-9...
Page 69 - Optical Fiber Cable Connectors; Table 50 lists
Optical Fiber Cable Connectors 69 Tx = Send data Rx = Receive data BI = I-directional data. Table 50 lists RJ-45 MDI-X Port Pin-outs. Optical Fiber Cable Connectors Figure 42 illustrates the SC optical fiber cable connector. Figure 42 SC Optical Fiber Connector 3 Rx+ Receive data BIDB+ Send data to ...
Page 70 - Figure 43. illustrates the MT-RJ fiber optic cable connector.; The MT-RJ Fiber Connector; Figure 44 illustrates the LC connector.; LC Connector
70 A PPENDIX A: S WITCH 7750 C ABLES 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 - Troubleshoot Online; Com Knowledgebase
B O BTAINING S UPPORT FOR YOUR S WITCH Register Your Product to Gain Service Benefits To take advantage of warranty and other service benefits, you must first register your product at http://eSupport.3com.com/ . 3Com eSupport services are based on accounts that you create or have authorization to ac...
Page 72 - Software Upgrades; Contact Us; Country
72 A PPENDIX B: O BTAINING S UPPORT FOR YOUR S WITCH Software Upgrades are the software releases that follow the software version included with your original product. In order to access upgrades and related documentation you must first purchase a service contract from 3Com or your reseller. Contact ...
Page 73 - Telephone Technical Support and Repair
Telephone Technical Support and Repair 73 Europe, Middle East, and Africa Telephone Technical Support and Repair From anywhere in these regions, call: +44 (0)1442 435529 From the following countries, you may use the numbers shown: Austria Belgium Denmark Finland France Germany Hungary Ireland Israel...
