Sfp Module Ports; Console Port; Identifying A Crossover Cable - Cisco WS-C2950T-48-SI Hardware Installation Manual

Appendix B Connectors and Cables

SFP Module Ports

The Catalyst 2950 LRE switch uses SFP modules for fiber-optic and copper uplink ports. See the
Catalyst 2950 LRE switch release notes for a list of supported SFP modules. See
Figure
Figure B-7
Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into
beams or view directly with optical instruments. Statement 1051
Figure B-8

Console Port

The console port uses an 8-pin RJ-45 connector. You can connect a switch to a PC through the console
port and the supplied RJ-45-to-DB-9 adapter cable. If you want to connect a switch to a terminal, you
need to provide an RJ-45-to-DB-25 female DTE adapter. You can order a kit (part number
ACS-DSBUASYN=) with that adapter from Cisco. For console-port and adapter-pinout information, see
Table B-3

Identifying a Crossover Cable

You can identify a crossover cable by comparing the two modular cable ends. Hold the cable ends
side-by-side, with the tab at the back. The wire connected to the pin on the outside of the left plug should
be the same color as the wire connected to the pin on the outside of the right plug. (See
OL-6156-01
B-8.
Fiber-Optic SFP Module LC Connector
1000BASE-T SFP Module RJ-45 Connector
Pin Label
1 TP0+
2 TP0-
3 TP1+
4 TP2+
5 TP2-
6 TP1-
7 TP3+
8 TP3-
and Table B-4.
1 2 3 4 5 6 7 8
Catalyst 2950 Switch Hardware Installation Guide
Connector Specifications
Figure B-7 and
Figure B-9.)
B-5