Home
Support
Product Support
Switches
Cisco C9350 Series Smart Switches
Configuration Guides

PoE Configuration Guide

View all Saved Content

PDF

Is this helpful?

Helpful Unhelpful

Feedback

Thank you for your feedback. Your response has been recorded.

Ask about this document

Cisco Configuration Guide, Release 4.2

Table of contents

Expand all sections

About this document

Read Me First

PoE

Feature History for PoE
PoE support on switch models
Guidelines for PoE
PoE
PoE management modes
PoE, powered device, and switch
Power monitoring and power policing
Monitor power status
Example: Display PoE status

Perpetual PoE and Fast PoE

Support of Perpetual PoE and Fast PoE on a switch
Perpetual PoE
Fast PoE
How fast PoE works
Guidelines to configure perpetual PoE and fast PoE
Configure perpetual PoE and fast PoE
Example: Configure perpetual PoE

Persistent PoE with 2-event enabled and Fast PoE

Feature History for Persistent PoE with 2-event enabled and Fast PoE
Support of persistent PoE with 2-event enabled and fast PoE on switch
Persistent PoE with 2-event enabled and fast PoE
How persistent PoE with 2-event enabled and fast PoE works
Guidelines to configure persistent PoE with 2-event enabled and fast PoE
Configure persistent PoE with 2-event enabled and fast PoE
Example: Configure 2-Event classification

About this document

Updated: September 15, 2025

Overview

This is the Power over Ethernet configuration guide for the Cisco 9K Smart Switches.

PoE

Provides details about PoE, supported switch modules, management modes, how PoE works on a switch, and the commands to monitor it.

Perpetual PoE and Fast PoE

Provides details about perpetual PoE and fast PoE, supported switch modules, guidelines, and how to configure perpetual PoE and fast PoE.

Persistent PoE with 2-event enabled and Fast PoE

Provides details about persistent PoE with 2-event enabled and fast PoE, supported switch modules, guidelines, and how to configure persistent PoE with 2-event enabled and fast PoE.

Need help?

Open a support case

(Requires a Cisco Service Contract)

Bias-free language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.