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Catalyst 3750 Switch Hardware Installation Guide
78-15136-03
Chapter 3 Switch Installation
Connecting to the 10/100 and 10/100/1000 Ports
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, 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.
The Auto-MDIX feature is enabled by default on switches running Cisco IOS
Release 12.2(18)SE or later. For releases between Cisco IOS
Release 12.1(14)EA1 and 12.2(18)SE, 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
.
Follow these steps to connect to 10BASE-T, 100BASE-TX or 1000BASE-T
devices:
Caution
PoE faults are caused when noncompliant cabling or powered devices are
connected to a PoE port. Only standard-compliant cabling can be used to connect
Cisco pre-standard IP Phones and wireless access points or
IEEE 802.3af-compliant devices to PoE ports. A cable or device that causes a
PoE fault must be removed from the network.
Step 1
When connecting to workstations, servers, routers, and Cisco IP Phones, connect
a straight-through cable to an RJ-45 connector on the front panel. (See
.) When connecting to switches or repeaters, use a crossover cable.
(See the
“Cable and Adapter Specifications” section on page B-5
for cable-pinout
descriptions.)
Note
When connecting to 1000BASE-T-compatible devices, be sure to use a
twisted four-pair, Category 5 cable.
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Страница 140: ...Chapter 3 Switch Installation Where to Go Next 3 62 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...
Страница 160: ...Appendix A Technical Specifications A 10 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...
Страница 222: ...Appendix D Translated Safety Warnings Laser Radiation D 38 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...
Страница 230: ...Index IN 8 Catalyst 3750 Switch Hardware Installation Guide 78 15136 03 ...