Chapter 2 Switch Installation
Planning the Stack
Planning Considerations
Before connecting the Catalyst 3750 switches in a stack, observe these planning considerations:
•Size of the switch. For switch dimensions, see Appendix A, “Technical Specifications.” Some 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
•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
•For concepts and procedures to manage switch stacks, see the switch software configuration guide.
Powering Considerations
Consider the following guidelines before you power on the switches in a stack:
•The sequence in which you initially power on the switches might affect the switch that becomes the stack master.
•If you want a particular switch to become the stack master, power on that switch first. This switch becomes the stack master and remains the stack master until a master
•If you have no preference as to which switch becomes the stack master, power on all the switches in the stack within a
•Power off a switch before you add it to or remove it from an existing switch stack.
Note For conditions that can cause a stack master
Cabling Considerations
The illustrations in this section display cabling configuration examples that show the stack bandwidth and possible stack partitioning.
Figure 2-1 shows an example of a stack of Catalyst 3750 switches that provides full bandwidth and redundant StackWise cable connections.
Catalyst 3750 Switch Hardware Installation Guide
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