Cisco WS-C2950-24, Руководство по установке оборудования

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Chapter 2 Installation
Connecting to 10/100 and 10/100/1000 Ports
2-30
Catalyst 2950 Desktop Switch Hardware Installation Guide
78-11157-02
Connecting to 10/100 and 10/100/1000 Ports
The 10/100 and 10/100/1000 ports configure themselves to operate at the speed
and duplex settings of attached devices. If the attached devices do not support
autonegotiation, you can explicitly set the speed and duplex parameters.
The 10/100 ports operate at 10 or 100 Mbps in half- or full-duplex mode.
The 10/100/1000 ports on Catalyst 2950T-24 switches operate at 10 or 100 Mbps
in half- or full-duplex mode and at 1000 Mbps in full-duplex mode.
Connecting devices that do not autonegotiate or devices with manually set speed
and duplex parameters can reduce performance or result in link failures between
the devices. To maximize performance, choose one of these methods for
configuring the ports:
•
Let the ports autonegotiate both speed and duplex.
• Set the speed and duplex parameters on both ends of the connection.
Follow these steps to connect the switch to 10BASE-T, 100BASE-TX, or
1000BASE-T devices:
Caution To prevent electrostatic-discharge (ESD) damage, follow your normal board
and component handling procedures.
Step 1 When connecting to servers, workstations, and routers, insert a twisted-pair
straight-through cable in a front-panel RJ-45 connector, as shown in
Figure 2-25 ,
Figure 2-26 , and Figure 2-27 . When connecting to switches or repeaters, insert a
twisted-pair crossover cable. (See the “Cable and Adapter Specifications” section
on page B-6 for cable-pinout descriptions.)
Note When connecting to 1000BASE-T-compatible devices, be sure to use a four
twisted-pair, Category 5 cable.