3Com 7754 Installation Manual page 10

10 C 1: S 7750 C
HAPTER WITCH
Fixed Ports
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 12.
The Switch 7750 Fabric modules provide the following fixed ports:
Compact Flash (CF) Port
■
1000BASE-X-SFP (PoE Fabric 96 only)
■
Console Port
■
Ethernet Port
■
Compact Flash (CF) Port
The Fabric module provides a CF port to accommodate a standard CF card, where
you can save logging information, host version information, alarming and other
diagnostic information. You can also use the CF port to upgrade software online.
1000BASE-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 4 Cables for 1000BASE-T-SFP Modules
Central
SFP Module Wavelength
1000BASE-SX-SFP 850 nm
1000BASE-LX-SFP 1310 nm
1000BASE-LH-SFP
1000BASE-ZX-LR-SFP 1550 nm
1000BASE-ZX-VR-SFP
1000BASE-T-FD-SFP
Table 8 describes the LEDs of the SFP ports.
Table 5 SFP Port LEDs
LED
LINK/ACT
Connector Matching Cable
LC 50/125 µm
multimode
optical fiber
cable
62/125 µm
multimode
optical fiber
cable
9/125 µm single
mode optical
fiber cable
RJ-45
Description
Off — The line is not connected.
Green — The line is connected.
Green flashing — Data is being transmitted or received.
Maximum
transmission
distance
550 m (1804 ft.)
275 m (902 ft.)
10 km (6 mi.)
30 km (19 mi.)
40 km (25 mi.)
70 km (43 mi.)
100 m (328 ft.)