Appendix; Connectors And Cables; Connector Specifications; 10/100 Ports - Cisco WS-C2950T-48-SI Hardware Installation Manual

Connectors and Cables

This appendix describes the connectors, cables, and adapters that you use to connect the switch to other
devices.

Connector Specifications

These sections describe the connectors used with the Catalyst 2950 switches and contains this
information:
•
•
•
•
•
•
•

10/100 Ports

The 10/100 Ethernet ports use standard RJ-45 connectors and Ethernet pinouts with internal crossovers,
as shown by an X in the port name. These ports have the transmit (TD) and receive (RD) signals
internally crossed so that a twisted-pair straight-through cable and adapter can be attached to the port.
Figure B-1
When connecting 10/100 ports to other devices, such as servers, workstations, and routers, you can use
a two or four twisted-pair, straight-through cable wired for 10BASE-T and 100BASE-TX.
shows the two twisted-pair, straight-through cable schematics.
straight-through cable schematics.
When connecting the ports to other devices, such as switches or repeaters, you can use a two or four
twisted-pair, crossover cable.
Figure B-13
You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T devices. You must use Category
5 cabling when connecting to 100BASE-TX devices.
OL-6156-01
10/100 Ports, page B-1
10/100/1000 Ports, page B-2
100BASE-FX and 1000BASE-SX Ports, page B-4
LRE Port, page B-3
GigaStack GBIC Module Ports, page B-4
SFP Module Ports, page B-5
Console Port, page B-5
shows the pinout.
Figure B-11
shows the four twisted-pair, crossover cable schematics.
A P P E N D I X
Figure B-12
shows the two twisted-pair, crossover cable schematics.
Catalyst 2950 Switch Hardware Installation Guide
B
Figure B-10
shows the four twisted-pair,
B-1