3Com 3C16895 Installation Manual

Also see for 7750 Series: Datasheet Installation guide Quick reference guide Product guide Command reference guide

Contents

12 CHAPTER 1: S WITCH 7750 COMPONENTS■ 4-port 1000BASE-X-GBIC submodule■ 4-port 10/100/1000BASE-T submoduleFor more information on these submodules, see “Fabric 32 Submodules”onpage 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■ Ethernet PortCompact Flash (CF) PortThe Fabric module provides a CF port to accommodate a standard CF card, whereyou can save logging information, host version information, alarming and otherdiagnostic information. You can also use the CF port to upgrade software online.1000BASE-X-SFP PortsThe PoE Fabric 96 provides four 1000 Mbps full-duplex SFP ports. Table 5 describesthe SFP cables for these ports.Table 9 describes the LEDs of the SFP ports.Table 5 Cables for 1000BASE-T-SFP ModulesSFP ModuleCentralWavelength Connector Matching CableMaximumtransmissiondistance1000BASE-SX-SFP 850 nm LC 50/125 μmmultimodeoptical fibercable550 m (1804 ft.)62/125 μmmultimodeoptical fibercable275 m (902 ft.)1000BASE-LX-SFP 1310 nm 9/125 μm singlemode opticalfiber cable10 km (6 mi.)1000BASE-LH-SFP 30 km (19 mi.)1000BASE-ZX-LR-SFP 1550 nm 40 km (25 mi.)1000BASE-ZX-VR-SFP 70 km (43 mi.)1000BASE-T-FD-SFP RJ-45 100 m (328 ft.)Table 6 SFP Port LEDsLED DescriptionLINK/ACT Off — The line is not connected.Green — The line is connected.Green flashing — Data is being transmitted.