Powering Off The Switch; Planning The Stack; Planning Considerations; Powering Considerations - Cisco 3750G-12S - Catalyst Switch - Stackable Hardware Installation Manual

Planning the Stack

When POST completes successfully, the System LED remains green. The RPS LED remains green for
some time and then returns to its operating status. The other LEDs turn off and return to their operating
status. When POST fails, the System LED turns amber.
Note POST failures are usually fatal. Call Cisco Systems if your switch does not pass POST.

Powering Off the Switch

After a successful POST, disconnect the power cord from the switch. Install the switch in a rack, on a
wall, on a table, or on a shelf as described in the
Planning the Stack
If you plan to stack your switches, read these sections:
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•
•
•

Planning Considerations

Before connecting the Catalyst 3750 switches in a stack, observe these planning considerations:
•
•
•
•

Powering Considerations

Consider the following guidelines before you power on the switches in a stack:
•
Catalyst 3750 Switch Hardware Installation Guide
2-8
Planning Considerations, page 2-8
Powering Considerations, page 2-8
Cabling Considerations, page 2-9
Recommended Cabling Configurations, page 2-10
Size of the switch. For switch dimensions, see
switches are deeper than the other switches. Stacking switches of the same size together makes it
easier to cable the switches.
Length of cable. Depending on the configurations that you have, you might need cables of different
sizes. If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If you
require the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier. For cable
numbers, see the "StackWise Ports" section on page
Configurations" section on page 2-10
Access to the rear ports for unrestricted cabling.
Make sure that you have access to the rear of the rack if you plan to stack the switches. If you do
not have access to the rear panel, make sure that you cable the switches before you rack-mount them.
For concepts and procedures to manage switch stacks, see the switch software configuration guide.
The sequence in which you initially power on the switches might affect the switch that becomes the
stack master.
"Installing the Switch" section on page
Appendix A, "Technical Specifications."
1-24. The "Recommended Cabling
provides examples of recommended configurations.
Chapter 2 Switch Installation
2-11.
Some
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