Connecting To The 10/100/1000 Ports - Cisco Catalyst 3550 Hardware Installation Manual

Connecting to the 10/100/1000 Ports

Connecting to the 10/100/1000 Ports

Step 1
Catalyst 3550 Multilayer Switch Hardware Installation Guide
2-18
The switch 10/100/1000 Ethernet ports configure themselves to operate at the
speed of attached devices. If the attached ports do not support autonegotiation,
you can explicitly set the speed and duplex parameters.
Connecting devices that do not autonegotiate or that have their speed and duplex
parameters manually set can reduce performance or result in no linkage. To
maximize performance, choose one of these methods for configuring the Ethernet
ports:
Let the ports autonegotiate both speed and duplex.
•
• Set the port speed and duplex parameters on both ends of the connection.
Follow these steps to connect to 10BASE-T, 100BASE-TX or 1000BASE-T
devices:
When connecting to workstations, servers, routers, and Cisco IP Phones, connect
a straight-through Category 5 cable to an RJ-45 connector on the front panel. (See
Figure 2-10.) When connecting to switches or repeaters, use a crossover Category
5 cable. Pinouts for the cables are described in the
Straight-Through Cable Pinouts" section on page
Chapter 2 Installing and Starting the Switch
"Crossover and
B-4.
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