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© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 17 of 17
The recommendation is to perform the calculation of required power in the power stack and add the amount of
reserved power (size of the largest power supply in the power stack) and compare the requirement with the
available power in the power stack.
6. Off-lining power supplies are supported but it is not automatic.
Cisco IOS has the necessary commands to manage the power supplies and administrator intervention is
required due to the multiple use cases that can be derived. Cisco IOS has multiple warning messages to
prevent unbalancing the power stack.
Recommendation is to analyze the deployment to make sure that turning off a power supply would not break any
of the rules or recommendations stated earlier such as filling in all power supply slot A before installing a power
supply in slot B; turning off a power supply would have a similar effect of removing the power supply from.
For More Information
Refer to following documents:
Catalyst 3750-X Software Configuration Guide
Catalyst 3750-X Hardware Installation Guide
Printed in USA C11-578931-02 01/12