Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
For more information about XENPAK modules, see your XENPAK module documentation.
Note The 10-Gigabit Ethernet XENPAK modules are referred to as 10-Gigabit Ethernet module ports in the software documentation.
Console Port
The console port uses an 8-pin RJ-45 connector, which is described in Table B-4and Table B-5. The supplied RJ-45-to-DB-9 adapter cable is used to connect the console port of the switch to a console PC. You need to provide a RJ-45-to-DB-25 female DTE adapter if you want to connect the switch console port to a terminal. You can order a kit (part number ACS-DSBUASYN=) containing that adapter from Cisco. For console port and adapter pinout information, see Table B-4and Table B-5.
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-9
•Crossover Cable and Adapter Pinouts, page B-9
SFP Module Cable Specifications
Table B-3lists 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 | | | | | | |
| | | | | | | | | | | |
| | | Wavelength | | Core Size/Cladding | Modal Bandwidth | | | | | |
| SFP Module | | (nanometers) | Fiber Type | Size (micron) | (MHz/km)1 | Cable Distance | |
| 100BASE-BX | | 1310 TX | SMF | G.6522 | — | 32,810 feet (10 km) |
| (GLC-FE-100BX-D | 1550 RX | | | | | | | | |
| GLC-FE-100BX-U) | | | | | | | | | |
| | | | | | | | |
| 100BASE-FX | | 1310 | MMF | 50/125 | 500 | 6,562 feet (2 km) |
| (GLC-GE-100FX) | | | 62.5/125 | 500 | 6,562 feet (2 km) |
| | | | | | | | |
| 100BASE-FX | | 1310 | MMF | 50/125 | 500 | 6,562 feet (2 km) |
| (GLC-FE-100FX) | | | 62.5/125 | 500 | 6,562 feet (2 km) |
| | | | | | | | |
| 100BASE-LX | | 1310 | SMF | G.6522 | — | 32,810 feet (10 km) |
| (100BASE-LX10) | | | | | | | | | |
| | | | | | | | | | | |
| | | | | Catalyst 3750 Switch Hardware Installation Guide | | | | |
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| OL-6336-07 | | | | | | | | B-5 | |
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