How to Enable PoE on Cisco Switch | Standards
Summary Power over Ethernet (PoE) allows a single Ethernet cable to carry both power and data to devices such as IP phones, wireless access
This PoE configuration is applicable to ordinary switches
Home / This PoE configuration is applicable to ordinary switches
It allows a PoE-capable switch to provide 60 W (2 x 30 W) of power over standard Ethernet cabling infrastructure (Class D or better) by using both pairs of an RJ-45 cable-signal pair (wires 1,2,3,6) and spare pair (wires 4,5,7,8), and managing the power using Cisco. PoE: Power over Ethernet (PoE) is a technology that allows Ethernet cables to carry electrical power, along with data, to powered devices. While most Cisco Catalyst switches deliver PoE out-of-the-box, proper configuration and planning are crucial to prevent oversubscription, voltage drops, or random device resets. This 2025 guide explains how to enable, verify, and optimize PoE on Cisco switches, including standards, power budgeting. To locate the PoE information for your specific AOS-CX switch, see the Table of Contents at the front of this guide, or the Quick reference table. HPE Aruba Networking switches are designed to be used primarily in wiring closets. This technology allows devices such as IP phones, wireless access points, and security cameras to receive both network connectivity and power supply.
