3Com 3C16895 1

1SWITCH 7750 COMPONENTS

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 The Switch 7750 is available with a 4-Slot or 7-Slot chassis. Tab le 3 lists the

hardware features of each model.

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. 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 the system

Tabl e 3 Hardware Features of the Switch 7750 Models

4-Slot Chassis 7-Slot Chassis

Fabric slots 1 1

I/O module slots 3 6

Fan slot 1 1

AC Power module slots 2 3

Contents

Main 3Com Corporation 350 Campus Drive Marlborough, MA 01752-3064 C ABOUT THIS GUIDE SWITCH 7750 COMPONENTS INSTALLING THE SWITCH 7750 CONFIGURING THE SWITCH 7750 M AINTAINING S M AINTAINING H T SWITCH 7750 CABLES OBTAINING SUPPORT FOR YOUR SWITCH Page ABOUT THIS GUIDE Conventions Related Documentation 1 Switch Chassis Switch Backplane Fabric Module Figure 3 illustrates the front panel of the Fabric 32. Figure 3 Fabric 32 12345678 Tabl e 4 lists Fabric specifications. Tabl e 4 Fabric Specifications Page Page Fabric 32 Submodules Page I/O Modules Page Page Page Page Figure 12 48-port 10/100/1000BASE-T Module Figure 13 illustrates the front panel and LEDs of the 48-port 10/100/1000BASE-T module. 12 Figure 13 Front Panel of the 48-port 10/100/1000BASE-T Module Tabl e 24 describes the specifications of the 48-port 10/100/1000BASE-T module. Tabl e 23 describes the 48-port 10/100/1000BASE-T module LEDs. Page Page Page Page Every GBIC port has a LED, as shown in Figure 21. Tabl e 31 describes the 8-Port 1000BASE-X GBIC module LEDs. Tabl e 33 describes the specifications of the 8-port 1000BASE-X GBIC module. The cables for each of the supported 8GBIC modules are described inTabl e 32. Page Page Power Module Power Distribution External PoE Power System Fan Assembly Switch 7750 Specifications Tabl e 40 provides detailed information about features of the Switch 7750. Tabl e 40 Specifications for the Switch 7750 System 2 Preparing to Install General Site Requirements Installation Checklist Installing the Chassis Installing the Cabling Rack Installing a Module Installing a Submodule Connecting the Ground Wire Connecting and Configuring Power Page Installing the Fan Assembly Installing Cables Page Installing Cabling Post-installation Checklist Page 3 Configuring the Switch 7750 and a Local Terminal Setting Terminal Parameters Page Page Booting the Switch 7750 Page Page 4 Upgrading Software Page Page Page Page Page Page Page Lost Passwords Using the BOOT Menu After you power on the Switch 7750, the BootROM program runs automatically. Page 5 Replacing a Power Module Replacing a Power Supply Replacing I/O Modules Replacing the Fan Assembly Page 6 Troubleshooting the Configuration Troubleshooting Power Troubleshooting the Fan Troubleshooting the Modules A Console Cable AUX Cable Figure 40 The AUX Cable Tabl e 48 lists the AUX cable pin-outs. Electrical Port Connector Tabl e 49 lists RJ-45 MDI port pin-outs. Figure 41 illustrates the RJ-45 connector. Figure 41 The RJ-45 Connector Tabl e 48 AUX Cable Pin-outs Optical Fiber Cable Connectors Figure 42 illustrates the SC optical fiber cable connector. Figure 42 SC Optical Fiber Connector Tabl e 50 RJ-45 MDI-X Port Pinouts Table 49 RJ-45 MDI Port Pin-outs (continued) Page B S Register Your Product to Gain Service Benefits Purchase Value-Added Services Troubleshoot Online Contact Us Telephone Technical Support and Repair Europe, Middle East, and Africa Telephone Technical Support and Repair