B-5
Catalyst 3750 Switch Hardware Installation Guide
OL-6336-10
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Cable and Adapter Specifications
These sections describe the cables and adapters used with Catalyst 3750 switches:
• SFP Module Cable Specifications, page B-5
• Two Twisted-Pair Cable Pinouts, page B-6
• Four Twisted-Pair Cable Pinouts for 10/100 Ports, page B-7
• Identifying a Crossover Cable, page B-8
• Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports, page B-8
• Crossover Cable and Adapter Pinouts, page B-9
SFP Module Cable Specifications
Table B-3 lists the cable specifications for the fiber-optic SFP module connections. Each port must
match the wave-length specifications on the other end of the cable, and for reliable communications, the
cable must not exceed the required cable length. Copper 1000BASE-T SFP transceivers use standard
four twisted-pair, Category 5 or greater cable at lengths up to 328 feet (100 meters).
Table B-3 Fiber-Optic SFP Module Port Cabling Specifications
SFP Module
Wavelength
(nanometers) Fiber Type
Core Size/Cladding
Size (micron)
Modal Bandwidth
(MHz/km)
1
Cable Distance
100BASE-BX
(GLC-FE-100BX-D
GLC-FE-100BX-U)
1310 TX
1550 RX
SMF G.652
2
— 32,810 feet (10 km)
100BASE-FX
(GLC-GE-100FX)
1310 MMF 50/125
62.5/125
500
500
6,562 feet (2 km)
6,562 feet (2 km)
100BASE-FX
(GLC-FE-100FX)
1310 MMF 50/125
62.5/125
500
500
6,562 feet (2 km)
6,562 feet (2 km)
100BASE-LX
(100BASE-LX10)
1310 SMF G.652
2
— 32,810 feet (10 km)
1000BASE-BX10-D
(GLC-BX-D)
1490 TX
1310 RX
SMF G.652
2
— 32,810 feet (10 km)
1000BASE-BX10-U
(GLC-BX-U)
1310 TX
1490 RX
SMF G.652
2
— 32,810 feet (10 km)
1000BASE-SX
(GLC-SX-MM)
850 MMF 62.5/125
62.5/125
50/125
50/125
160
200
400
500
722 feet (220 m)
902 feet (275 m)
1640 feet (500 m)
1804 feet (550 m)
1000BASE-LX/LH
(GLC-LH-SM)
1310 MMF
3
SMF
62.5/125
50/125
50/125
G.652
2
500
400
500
—
1804 feet (550 m)
1804 feet (550 m)
1804 feet (550 m)
32,810 feet (10 km)
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