Cisco Systems OL-16447-01 Manual De Usuario

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. 

shows the two twisted-pair straight-through cable schematics. 

 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. 

 shows the two twisted-pair crossover cable schematics. 

 shows the four twisted-pair crossover cable schematics.

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, 10/100/1000, or 1000BASE-T SFP module port on the switch, regardless of the type of 
device on the other end of the connection.

You can use Category 3, 4, or 5 cabling when connecting to 10BASE-T-compatible devices. You must 
use Category 5 (or higher) cabling when connecting to 100BASE-TX-compatible devices.

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.

Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into 
beams or view directly with optical instruments. Statement 1051

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