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© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 1 of 17
White Paper
Cisco StackPower: Efficient Use of Power
Introduction
The Cisco StackPower
™
technology is an innovative feature that aggregates all of the available power in a stack of
switches and manages it as one common power pool for the entire stack. It is one of the main features introduced
in the Cisco
®
Catalyst
®
3750-X Series Switches (Figure 1).
Figure 1. Cisco StackPower
This white paper explains how Cisco StackPower manages power more efficiently, allowing customers to achieve
more granular control of their power use and to realize savings that reduce the total cost of ownership (TCO) of
their Cisco Catalyst switches.
This Whitepaper covers the following topics:
●
Benefits of Cisco StackPower
●
Technology Overview
●
Use Case for Cisco StackPower
●
Intelligent Power Management
●
Cisco StackPower Topology
●
Modes of Operation
●
Intelligent Load Shedding
●
Best Practices
Benefits of Cisco StackPower
The benefits of the Cisco StackPower technology are immediately tangible, and so are the savings.
Consider a stack of switches with each switch requiring a slightly higher power budget for some extra Power over
Ethernet (PoE) devices randomly scattered in the stack. Purchasing extra second power supply for each switch
that needs some additional power would be inefficient and expensive. With the Cisco StackPower solution, a
common pool of power is made available and additional power can be automatically redirected to the appropriate
switch based on the available power budget in the common power pool.
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Inhaltsverzeichnis

Seite 1 - Benefits of Cisco StackPower

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 1 of 17 White Paper Cisco StackPower: Effi

Seite 2 - Technology Overview

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 10 of 17 A maximum of 8400W is possible in

Seite 3 - StackPower operation

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 11 of 17 Figure 8. Power Share Mode In

Seite 4 - Zero-Footprint RPS

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 12 of 17 Power Share “Strict” Mode The pow

Seite 5 - Figure 4. Ring Topology

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 13 of 17 configured, but it would not offl

Seite 6

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 14 of 17 Immediate load shed occurs when a

Seite 7

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 15 of 17 The table shows the default prior

Seite 8 - “show stack-power”

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 16 of 17 Power supply slots are named left

Seite 9 - Intelligent Power Management

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 17 of 17 The recommendation is to perform

Seite 10 - Modes of Operation

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 2 of 17 Cisco StackPower technology immedi

Seite 11

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 3 of 17 Note that all power available in t

Seite 12 - Redundant Mode

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 4 of 17 Cisco Catalyst 3750-X and 3560-X S

Seite 13 - Intelligent Load Shedding

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 5 of 17 Figure 4. Ring Topology Figure

Seite 14 - Priority Scheme

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 6 of 17 An XPS cable has a color band on t

Seite 15 - Best Practices

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 7 of 17 Use Case for the Cisco StackPower

Seite 16

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 8 of 17 Although the power stack in the ex

Seite 17 - For More Information

© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information. Page 9 of 17 “show env power all” SW PID Seri

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