Cisco Catalyst 3750 Hardware Installation Manual page 130

Connecting to the 10/100 and 10/100/1000 Ports
Voltages that present a shock hazard may exist on Power over Ethernet (PoE)
Warning
circuits if interconnections are made using uninsulated exposed metal
contacts, conductors, or terminals. Avoid using such interconnection methods,
unless the exposed metal parts are located within a restricted access location
and users and service people who are authorized within the restricted access
location are made aware of the hazard. A restricted access area can be
accessed only through the use of a special tool, lock and key or other means of
security.
You can configure the 10/100 ports on the Catalyst 3750-24PS and 3750-48PS
switches either to automatically provide PoE when a Cisco IP Phone, Cisco
Aironet Access Point, or end device compliant with IEEE 802.3af is connected or
never to provide PoE, even if an IP phone or an access point is connected. The
default setting is Auto. To prevent ESD damage, follow your normal board and
component handling procedures.
Use the guidelines in
switch 10/100 and 10/100/1000 ports to other devices. See the
Specifications" section on page B-5
Table 3-2
Device
Switch to switch
Switch to hub
Switch to computer
or server
Switch to router
Switch to IP phone
1. 100BASE-TX and 1000BASE-T traffic requires twisted four-pair, Category 5 cable.
Catalyst 3750 Switch Hardware Installation Guide
3-52
Table 3-2
Recommended Ethernet Cables
Crossover Cable
Yes
Yes
No
No
No
10BASE-T traffic can use Category 3 or Category 4 cable.
to select the correct cable for connecting the
for cable-pinout descriptions.
1
Straight-Through Cable
No
No
Yes
Yes
Yes
Chapter 3 Switch Installation
"Cable and Adapter
1
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