Cisco Catalyst 3750-E Series Manuale introduttivo - Pagina 14

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Rack-Mounting

This section covers basic 19-inch rack-mounting and switch port connections. As an example, all the

illustrations show the Catalyst 3750E-48 PoE switch. You can install and connect other

Catalyst 3750-E switches as shown in these illustrations. For additional installation and cabling

information, see the hardware installation guide on Cisco.com.

You need a Phillips screwdriver to rack-mount the switch. For connecting the StackWise cables, you

need a ratcheting torque screwdriver capable of 5 lbf-in. (80 ozf-in.).

Before installing the switch, verify that these guidelines are met:

• Clearance to front and rear panels is such that

Front-panel indicators can be easily read.

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Access to ports is sufficient for unrestricted cabling.

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• Make sure that there is access to the rear of the rack if you are planning to stack the switches or

connect the RPS 2300. If you do not have access to the rear panel, make that sure you cable the

switches before you rack-mount them.

• If you have the optional 1150-W power supply module, first rack-mount the switch before

installing the power supply module.

• AC power cord can reach from the AC power outlet to the connector on the switch rear panel.

• Cabling is away from sources of electrical noise, such as radios, power lines, and fluorescent

lighting fixtures. Make sure the cabling is safely away from other devices that might damage the

cables.

• Airflow around the switch and through the vents is unrestricted.

• Temperature around the unit does not exceed 113°F (45°C). If the switch is installed in a closed

or multirack assembly, the temperature around it might be greater than normal room temperature.

• For copper connections on Ethernet ports, cable lengths from the switch to connected devices can

be up to 328 feet (100 meters).

• For cable lengths for X2 transceiver modules and SFP-module connections, see the hardware

installation guide on Cisco.com and the documentation that shipped with the module.