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3Com 3C16895 Installation Manual

3c16895 7-slot chassis 3c16894 4-slot chassis and associated modules
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http://www.3com.com/
Part No. 10014824
Published June 2005
Switch 7750

Installation Guide

3C16895 7-slot Chassis
3C16894 4-slot Chassis
and associated modules

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Summary of Contents for 3Com 3C16895

  • Page 1: Installation Guide

    Part No. 10014824 Published June 2005 Switch 7750 Installation Guide 3C16895 7-slot Chassis 3C16894 4-slot Chassis and associated modules...
  • Page 2 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose.

  • Page 3: Table Of Contents

    24-port 100BASE-FX MMF FE Module 20-Port 10/100/1000BASE-T Module 20-Port 1000BASE-X-SFP Module 8-port 1000BASE-X GBIC Module 8-port 10/100/1000BASE-T GE Module 1-Port 10GBASE-R-XENPAK Module Power Module Power Distribution External PoE Power System Fan Assembly Switch 7750 Specifications 7750 NSTALLING WITCH Preparing to Install General Safety Recommendations...
  • Page 4 Installing Cabling Bench-Mounted Switch Rack-Mounted Switch Cable Binding Post-installation Checklist ONFIGURING THE WITCH Configuring the Switch 7750 and a Local Terminal Setting Terminal Parameters Booting the Switch 7750 Powering up and Booting AINTAINING OFTWARE Upgrading Software Upgrading the Software Image...
  • Page 5 Removing the AC Power Module Installing the AC Power Module Replacing a Power Supply Replacing I/O Modules Replacing the Fan Assembly ROUBLESHOOTING Troubleshooting the Configuration No information is displayed on the terminal The display characters are illegible Troubleshooting Power Troubleshooting the Fan Troubleshooting the Modules 7750 C WITCH...

  • Page 7: About This Guide

    (LAN) operations and familiarity with communication protocols that are used to interconnect LANs. Always download the Release Notes for your product from the 3Com World Wide Web site and check for the latest updates to software and product documentation: http://www.3com.com...

  • Page 8: Related Documentation

    Switch 7750: ■ ■ ■ 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/ Description Italics are used to: Emphasize a point.

  • Page 9: Switch 7750 Components

    ■ ■ ■ Switch Chassis The Switch 7750 is available with a 4-Slot or 7-Slot chassis. Table 3 lists the hardware features of each model. Table 3 Hardware Features of the Switch 7750 Models Switch Backplane The Switch 7750 backplane is part of the integrated chassis and delivers high-speed data transfer between the Fabric and I/O modules.

  • Page 10: Fabric Module

    4-slot chassis. You can install the Fabric 64 only in the 7-slot chassis. You can install the PoE Fabric 96 in both chassis. The Fabric module is the core of Switch 7750 system. It has the following functions: ■...

  • Page 11: Submodule Slot

    32 MB 16 MB 366.7 mm x 340 mm (14.5 x 13.5 in) One console port that supports local and remote dial-up configuration management of the switch. One 10BASE-T/100BASE-TX port for upgrade and network management One Compact Flash port for storing log...

  • Page 12: Fixed Ports

    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 ■ 1000BASE-X-SFP (PoE Fabric 96 only) ■ Console Port ■...
  • Page 13 Off — The line is not connected. Green — The line is connected. Fabric Module Description RJ-45 10 Mbps, half/full duplex 100 Mbps, half/full duplex MDI/MDIX auto sensing Category-5 twisted pair for transmission within 100 m (328 ft) Switch software upgrade and network management...

  • Page 14: Module Leds

    1: S 7750 C HAPTER WITCH OMPONENTS Table 9 Ethernet Port LEDs (continued) ACTIVE Module LEDs The module LEDs show the status of the I/O modules, as described in Table 10. Table 10 I/O Module LEDs Power LEDs PWR1, PWR2, and PWR3 LEDs show the status of the power modules, as described in Table 11.
  • Page 15 Figure 4 4-Port 1000BASE-X-GBIC Submodule 3C16874 Ethernet GBIC port 2 Ethernet GBIC port LED Table 13 describes the 4-port 1000BASE-X-GBIC submodule LEDs. Table 13 LINK/ACT Table 14 lists the specifications for each of the 4-port 1000BASE-X-GBIC submodule. Table 14 Optional GBIC Module 1000BASE-SX-MM (3CGBIC91)

  • Page 16: I/O Modules

    See “Electrical Port Connector” on page 68 for an illustration of the RJ-45 connector and MDI/MDI-X pinout details. I/O Modules The Switch 7750 provides multiple slots for I/O modules below the Fabric slots. The following I/O modules are supported: ■...

  • Page 17: 48-Port 10/100Base-T Fe Poe Module

    48-port 10/100BASE-T FE The 48-port 10/100BASE-T FE PoE module provides 48 10/100 Mbps auto-sensing PoE Module 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 Figure 13 illustrates the front panel and LEDs of the 48-port 10/100BASE-T FE PoE module.

  • Page 18: 48-Port 10/100/1000Base-T Poe Module

    1: S 7750 C HAPTER WITCH OMPONENTS Table 18 Specifications for the 48-port 10/100BASE-T FE PoE Module (continued) Specification Maximum power each port provides Compliance 48-port The 48-port 10/100/1000BASE-T PoE module provides 48 10/100/1000 Mbps 10/100/1000BASE-T PoE auto-sensing Ethernet ports that provide a remote power supply to powered Module devices.

  • Page 19: 48-Port 10/100Base-T Auto-Sensing Fe Module

    Table 24 describes the specifications of the 48-port 10/100/1000BASE-T PoE module. Table 20 Specifications for the 48-port 10/100/1000BASE-T PoE Module Specification BootROM SDRAM Dimensions (L X W) Maximum power consumption Connector Number of ports Port transmission speed Cables and maximum transmission distance Compliance 48-port 10/100BASE-T...

  • Page 20: 48-Port 10/100/1000Base-T Module

    1: S 7750 C HAPTER WITCH OMPONENTS Figure 11 Front Panel of the 1 Ethernet port 2 Ethernet port LED Each 100 Mbps Ethernet port has a green LED, indicating LINK/ACTIVE status. Table 21 describes the 48-port 10/100BASE-T Auto-sensing FE module LED. Table 21 LINK/ACT Table 22 describes the specifications of the 48-port 10/100BASE-T Auto-sensing FE...
  • Page 21 48-port 10/100/1000BASE-T Module Figure 12 Figure 13 illustrates the front panel and LEDs of the 48-port 10/100/1000BASE-T module. 48-port 10/100/1000BASE-T Figure 13 Front Panel of the 3C16888 1 Ethernet port 2 Ethernet port LED Table 23 describes the 48-port 10/100/1000BASE-T module LEDs. Table 23 48-port 10/100/1000BASE-T Module LED Description LINK/ACT...

  • Page 22: 24-Port 100Base-Fx Mmf Fe Module

    1: S 7750 C HAPTER WITCH OMPONENTS 24-port 100BASE-FX The 24-port 100BASE-FX MMF FE module provides 24 100 Mbps multi-mode MMF FE Module 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 optical port has a green LED, as shown in Figure 15.

  • Page 23: 20-Port 10/100/1000Base-T Module

    Table 26 Specifications for the 24-Port 100BASE-FX MMF FE Module (continued) Specification Connector type Number of ports Port transmission speed Cables and maximum transmission distance Compliance 20-Port The 20-Port 10/100/1000BASE-T module provides 20 10/100/1000BASE-T 10/100/1000BASE-T auto-sensing Ethernet ports. Module Figure 16 illustrates the 20-Port 10/100/1000BASE-T Module. Figure 16 20-Port 10/100/1000BASE-T Module Figure 17 illustrates the front panel of the 20-port 10/100/1000BASE-T module.

  • Page 24: 20-Port 1000Base-X-Sfp Module

    1: S 7750 C HAPTER WITCH OMPONENTS Table 28 lists specifications of the 20-port 10/100/1000BASE-T module. Table 28 Specifications for the Specification BootROM SDRAM Dimensions (L x W) Power consumption Connector Number of ports Transmission rate Cable and maximum transmission distance Compliance 20-Port 1000BASE-X-SFP The 20-port 1000BASE-X-SFP module provides 20 1000 BASE-X full duplex ports...

  • Page 25: 8-Port 1000Base-X Gbic Module

    1 Ethernet port 2 Ethernet port LED Table 29 describes the 20-port 1000BASE-X-SFP module LEDs. Table 29 20-Port 1000BASE-X LINK/ACT Table 30 lists specifications of the 20-port 1000BASE-X-SFP module. Table 30 Specifications for the Specification BootROM SDRAM Dimensions (L x W) Power consumption Connector Number of ports...
  • Page 26 1: S 7750 C HAPTER WITCH 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 Table 31 8-Port 1000BASE-X GBIC Module LEDs LINK...

  • Page 27: 8-Port 10/100/1000Base-T Ge Module

    Table 33 Specifications for the 8-Port 1000BASE-X GBIC Module (continued) Specification BootROM SDRAM Dimensions (L x W) Maximum power consumption Number of ports Optional GBIC module types Port transmission speed Compliance 8-port The 8-port 10/100/1000BASE-T GE module provides 8 external 10/100/1000 10/100/1000BASE-T GE Mbps auto-sensing Ethernet electrical ports.

  • Page 28: 1-Port 10Gbase-R-Xenpak Module

    1: S 7750 C HAPTER WITCH OMPONENTS Table 34 describes the LEDs on the 8-port 10/100/1000BASE-T GE module. Table 34 8-Port 10/100/1000BASE-T GE Module LEDs LINK Specifications of the 8-port 10/100/1000BASE-T GE module are described in Table 35. Table 35 Specifications for the Specification BootROM SDRAM...

  • Page 29: Power Module

    N+1 redundancy. The 7-slot chassis provides three power module slots to implement N+1 redundancy. However, two power modules are sufficient to power one of these fully loaded Switch 7750 systems. 3C16875 Description On — The port is operating Off —...

  • Page 30: Power Distribution

    Input Maximum output 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 to the switch. The power distribution box for the 4-slot chassis has two inputs and each input has a separate ON/OFF switch.

  • Page 31: Fan Assembly

    Table 39 describes the capabilities of the Switch 7750 PoE power module. Table 39 PoE Power Modules Input voltage 100 to 140 V 200 to 240 V The Switch 7750 provides power through Ethernet ports on the PoE-supported I/O modules, supporting the maximum distance of 100 m (328 ft.).

  • Page 32: Switch 7750 Specifications

    1: S 7750 C HAPTER WITCH OMPONENTS Switch 7750 Table 40 provides detailed information about features of the Switch 7750. Specifications Table 40 Specifications for the Switch 7750 System Item Dimensions (W x H x D) Weight (with all components)

  • Page 33: Installing The Switch 7750

    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 the neutral point of the power is grounded properly, to avoid personal injury.

  • Page 34: Electrical Safety

    WARNING: Follow local safety regulations when performing any operation with the Switch 7750. Follow the related safety information and special safety instructions provided by 3Com. 3Com bears no responsibility for accidents that occur due to violations of safe operation requirements.

  • Page 35: Installation Space

    For better heat dissipation and equipment maintenance, 3Com recommends that you keep the front and back of the switch more than 1 meter (3 feet) away from the walls or other devices. The sides of the switch should be at least 0.8 meters (2.5 ft) away from the walls.

  • Page 36: Installing The Chassis

    When you are ready to install the Switch 7750 in the cabinet: 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.

  • Page 37: Installing A Module

    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 chassis and slide it gently into the slot.

  • Page 38: Connecting The Ground Wire

    7750 To connect the ground wire: If you install the switch in a cabinet, 3Com recommends that the ground wire of the switch be connected to the grounding bar of the cabinet. WARNING: The resistance between switch chassis and the ground should be less than 1 ohm.

  • Page 39: Connecting The Poe Power Cord

    2 Insert the -48V OT terminal of the DC power cord to the NEG (-) terminal of the switch and fasten the mounting screw; insert the other end to the NEG (-) terminal of the external PoE power supply. See Figure 29 for a detailed view.

  • Page 40: Installing The Fan Assembly

    2 Connect the RJ-45 connector of the console cable to the console port of the switch. Connecting the AUX An AUX cable is used to connect the Switch 7750 to a modem in a remote dial-up Cable configuration. The AUX cable is an 8-core shielded cable. One end of the cable is an RS-232 RJ-45 connector, which is used to plug into the switch at the console port.

  • Page 41: Connecting Module Cables

    1 Plug one end of the straight-through cable into the Ethernet RJ-45 port of the switch. 2 Plug the other end of the straight-through cable into the RJ-45 port of the hub or LAN Switch. Ports on 48-port 10/100BASE-T and 8-port 10/100/1000BASE-T modules support MDI/MDI-X auto-sensing.

  • Page 42: Installing Cabling

    WITCH 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 requires an MT-RJ optical fiber connector.

  • Page 43: Post-Installation Checklist

    10-30 mm (.5 – 1.2 in) 30 mm (1.2 in) Post-installation After you install your switch, use the checklist in Table 43 to verify that your switch Checklist operates correctly. WARNING: Confirm that you have turned off the power before checking your installation.
  • Page 44 2: I 7750 HAPTER NSTALLING WITCH...

  • Page 45: Configuring The Switch 7750

    Configuring the Configure the local terminal and Switch 7750, using Figure 31 as a reference. The Switch 7750 and a terminal (a PC in this example) is connected to the switch console port using a Local Terminal 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.
  • Page 46 3: C HAPTER ONFIGURING THE WITCH 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.
  • Page 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 Emulation dropdown menu.

  • Page 48: Booting The Switch 7750

    7750 WITCH 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: Powering Up And Booting

    Powering up and Turn on the power for the Switch 7750 and run the BootROM program. The Booting terminal displays the following information: Starting... RAM Line...OK System is booting... Copyright(C) 2001-2005 by 3Com Corporation, Inc. Creation date: Mar 25 2003, 09:33:05...
  • Page 50 3: C 7750 HAPTER ONFIGURING THE WITCH 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: Maintaining Software

    The following sections describe how to upgrade software on your Switch 7750: ■ ■ ■ ■ ■ Always save the configuration file before upgrading applications. Upgrading the Software To upgrade the software image of a Switch 7750, use one of the following Image procedures: ■ ■ ■ ■ Upgrading Software...

  • Page 52: Upgrading Software Using The Boot Menu

    4: M HAPTER AINTAINING 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: 230 User logged in [ftp]bin 200 Type set to I. [ftp]get sw7750003.app 200 PORT command successful.
  • Page 53 2 Enter the BootROM password. After entering the correct password (no password is set for the switch by default), the system will access the BOOT Menu: CAUTION: While using the switch, keep in mind the modified BOOTROM password.
  • Page 54 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.
  • Page 55 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...

  • Page 56: Upgrading Software Using Xmodem

    4: M HAPTER AINTAINING 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-V300RE-8016.app There are 3 files in this package...
  • Page 57 packet. If the check fails, negative characters are sent and the sending program sends the packet again. 1 Enter in the BOOT Menu and press Enter. The system accesses the download application file menu: 1. Set TFTP protocol parameter 2. Set FTP protocol parameter 3.

  • Page 58: Upgrading Software Using Tftp

    TFTP server, sends the data packet to the server, and receives the acknowledgement from the server. The Switch 7750 provides the functions of the TFTP client. to return to the Boot Menu. then select the newly downloaded file.

  • Page 59: Lost Passwords

    To upgrade using TFTP: 1 Verify that you are logged in with super-user privileges. 2 From the Switch 7750 command line (in user view), TFTP the image file from the TFTP server to the Switch 7750 using the following command: tftp <TFTP Server IP Address>...
  • Page 60 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), the system will access the BOOT Menu: Boot Menu Enter your choice(0-5): CAUTION: While using the switch, please keep in mind the modified BOOTROM password.

  • Page 61: Maintaining Hardware

    Replacing a Power To replace a power module, you need: Module ■ ■ WARNING: Insure that the switch is powered off before removing or installing a power module. Removing the AC Power To remove the power module, do the following: Module 1 Power off the Switch 7750.

  • Page 62: Replacing A Power Supply

    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 To replace a power supply, you need: Supply ■...

  • Page 63: Replacing I/O Modules

    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 You can hot-swap fan assemblies in the Switch 7750. Assembly To replace a fan assembly, you need: ■...
  • Page 64 5: M HAPTER AINTAINING 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: Troubleshooting

    If the configuration system has failed, there is no screen display at the configuration terminal or the displayed characters are illegible. No information is If there is no information displayed on the terminal after the Switch 7750 is displayed on the powered on, check that: terminal ■...

  • Page 66: Troubleshooting The Fan

    6: T HAPTER ROUBLESHOOTING Table 44 describes power LEDs on the Fabric. (continued) Table 44 Power LEDs on the Fabric FAIL Troubleshooting the If the fan OK LED is off, check that: ■ ■ ■ ■ Table 45 describes fan LEDs on the Fabric. Table 45 Fan LEDs on the Fabric FAIL Troubleshooting the...

  • Page 67: Switch 7750 Cables

    This appendix covers the following types of cables and connectors: ■ ■ ■ ■ Console Cable Figure 39 illustrates the console cable and connectors. Figure 39 The Console cable Enlarged A side Enlarged A side Table 47 lists console cable pin-outs. Table 47 Console Cable Pin-outs AUX Cable Figure 40 illustrates the AUX cable.
  • Page 68 A: S 7750 C PPENDIX WITCH ABLES Figure 40 The AUX Cable Enlarged A side Enlarged A side Table 48 lists the AUX cable pin-outs. Table 48 AUX Cable Pin-outs RJ-45 Electrical Port Figure 41 illustrates the RJ-45 connector. Connector Figure 41 The RJ-45 Connector PIN #1 Table 49 lists RJ-45 MDI port pin-outs.
  • Page 69 Table 49 RJ-45 MDI Port Pin-outs (continued) Pinout 10BASE-T/100BASE-TX Tx = Send data Rx = Receive data BI = I-directional data. Table 50 lists Table 50 RJ-45 MDI-X Port Pinouts Pinout 10BASE-T/100 BASE-TX Optical Fiber Cable Figure 42 illustrates the SC optical fiber cable connector. Connectors Figure 42 SC Optical Fiber Connector 1000BASE-T...
  • Page 70 A: S 7750 C PPENDIX WITCH 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: Obtaining Upport For Your

    Downloads software initially purchased with the product. In order to access these Software Updates you must first register your product on the 3Com web site at http://eSupport.3com.com/ First time users will need to apply for a user name and password. A link to...

  • Page 72: Contact Us

    ■ ■ To send a product 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.
  • Page 73 Ireland 01407 3387 Israel 1800 945 3794 Italy 199 161346 You can also obtain support in this region using the following URL: http://emea.3com.com/support/email.html Latin America Telephone Technical Support and Repair Antigua 1 800 988 2112 Argentina 0 810 444 3COM...
  • Page 74 B: O PPENDIX BTAINING UPPORT FOR YOUR WITCH...

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