Cisco Systems 3750-X Switch User Manual


 
2-5
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-01
Chapter 2 Switch Installation
Data Stack Cabling Configurations
Switch Data Stacking Guidelines
For general concepts and management procedures for switch stacks, see the switch software
configuration guide on Cisco.com. When adding a Catalyst
3750-X switch to a Catalyst 3750 switch
stack, review the Catalyst 3750-X Switch Stack Compatibility Guide on Cisco.com for information about
mixed stack configurations.
Before connecting the switches in a stack, keep in mind these stacking guidelines:
Size of the switch and any optional power-supply module. The 1100-W power-supply module is
longer than the other modules. Stacking switches with the same power-supply modules together
makes it easier to cable the switches. For switch dimensions, see
Appendix A, “Technical
Specifications.”
Length of cable. Depending on the configurations that you have, you might need different-sized
cables. If you do not specify the length of the StackWise cable, the 0.5-meter cable is supplied. If
you need the 1-meter cable or the 3-meter cable, you can order it from your Cisco supplier. For cable
part numbers, see the
“StackWise Ports” section on page 1-16. The “Data Stack Cabling
Configurations” section on page 2-5 provides examples of recommended configurations.
For rack-mounted switch stacks connected to the XPS-2200, review this recommended sequence of
events:
If you are using the XPS-2200, install the XPS first at the bottom of the stack. If needed, allow
one RU space between the XPS and the first switch above to provide room for cabling.
Connect the 12-pin XPS cables to the XPS-2200.
Rack-mount the switches. If you have the optional 1100-W power-supply module, first mount
the switch before installing the power-supply module.
Connect the XPS cable to the first switch above the XPS-2200. Connect the stack cables to the
first switch above the XPS.
Connect the XPS cable to the second switch above the XPS-2200. Connect the stack cables to
the next switch above the XPS.
Repeat until all switches are connected.
For rack-mounted switch stacks that are members of a StackPower stack as well as a data stack, see
the
“Planning a StackPower Stack (Catalyst 3750-X Switches)” section on page 2-8.
Data Stack Cabling Configurations
Figure 2-1 is an example of a recommended configuration that uses the supplied 0.5-meter StackWise
cable. In this example, the switches are stacked in a vertical rack or on a table. This configuration
provides redundant connections.