Cisco 2651XM-V, Руководство по установке оборудования

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B-9
Catalyst 3750 Switch Hardware Installation Guide
78-15136-02
Appendix B Connector and Cable Specifications
Cable and Adapter Specifications
Crossover Cable and Adapter Pinouts
This section describes how to identify a crossover cable and also describes the
adapter pinouts.
Identifying a Crossover Cable
To identify a crossover cable, compare the two modular ends of the cable. 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
Figure B-11 .)
Figure B-11 Identifying a Crossover Cable
Note
On switches running Cisco IOS Release 12.1(14)EA1 or later, you can use the
mdix auto command in the CLI to enable the automatic crossover feature. When
the automatic crossover 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 10/100/1000 port on the switch, regardless the
type of device on the other end of the connection.
The automatic crossover feature is disabled by default. For configuration
information for this feature, refer to the switch software configuration guide or the
switch command reference
.
Pin 1
H10632
Pin 8
Pin 1 on one connector and
pin 8 on the other connector
should be the same color.