Appendix B Connector and Cable Specifications
Connector Specifications
B-2
Catalyst 3560 Switch Hardware Installation Guide
78-16057-01
When connecting 10/100 ports to compatible 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. Figure B-4 shows the two
twisted-pair straight-through cable schematics. Figure B-6 shows the four
twisted-pair 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-5 shows the two
twisted-pair crossover cable schematics. Figure B-7 shows the four twisted-pair
crossover cable schematics.
Note You can use the mdix auto interface configuration command in the CLI to enable
the automatic medium-dependent interface crossover (Auto-MDIX) feature.
When the Auto-MDIX feature is enabled, the switch detects the required cable
type for copper Ethernet connections and configures the interfaces accordingly.
Therefore, you can use either a crossover or a straight-through cable for
connections to a copper 10/100 or 1000BASE-T SFP module port on the switch,
regardless of the type of device on the other end of the connection.
The Auto-MDIX feature is disabled by default. For configuration information for
this feature, refer to the switch software configuration guide or the switch
command reference.
You can use Category 3, 4, or 5 cabling when connecting to
10BASE-T-compatible devices. You must use Category 5 cabling when
connecting to 100BASE-TX-compatible devices.
Note Use a straight-through cable to connect two ports only when one port is
designated with an X. Use a crossover cable to connect two ports when both ports
are designated with an X or when both ports do not have an X.
This applies only to switches on which Auto-MDIX is disabled.
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