100base-fx ports – Cisco 2900 SERIES XL User Manual

Page 90

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Appendix B Connectors and Cable Specifications

Connector Specifications

B-2

Catalyst 2900 Series XL Hardware Installation Guide

78-6461-03

Figure B-1

10/100 Port Pinouts

When connecting the 10/100 ports to compatible workstations, servers, routers,
and Cisco IP Phones, you must use a straight-through cable wired for 10BASE-T
and 100BASE-TX. (

Figure B-4

shows the straight-through cable schematics.)

When connecting to other switches or repeaters, you must use a crossover cable.
(

Figure B-5

shows the crossover cable schematics.)

Note

Use a straight-through cable to connect two ports when one of the ports is
designated with an X. Use a crossover cable to connect two ports when both
connectors and cables are designated with an X or when both ports do not have
an X.

100BASE-FX Ports

100BASE-FX ports use duplex SC connectors, as shown in

Figure B-2

. These

ports use 10/125- or 62.5/125-micron multimode fiber-optic cabling.

54968

2 3

1

4 5 6 7 8

Pin

Label

1

2

3

4

5

6

7

8

RD+

RD-

TD+

NC

NC

TD-

NC

NC

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