Equipment That You Supply; Before You Begin - Cisco Catalyst 3750-E Getting Started Manual

• If you have no preference for which switch becomes the stack master, power on all the switches in
the stack within a 20-second timeframe. These switches participate in the stack master election.
Switches powered on after the 20-second timeframe do not participate in the election.
• Power off a switch before you add it to or remove it from an existing switch stack.
For more information on stack master elections, see the "Managing Switch Stacks" chapter in the
switch software configuration guide.
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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.

Equipment That You Supply

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 You Begin

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.
–
Access to ports is sufficient for unrestricted cabling.
–
• 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.
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