What is PoE?

PoE overview

Power over Ethernet (PoE) is an access layer technology that combines data signals and electrical power into a single Ethernet cable connection to enable remote powered device operation.

Why PoE?

Designing a network that’s ready to support the explosion of IoT devices and the latest wireless technologies is a challenge. Future proofing a network requires special consideration that addresses network capacity planning for both speed-based performance and to power network devices. Power over Ethernet (PoE) is an access layer technology which combines both data signals and electrical power into a single Ethernet cable connection to enable remote powered device operation.

By eliminating the need for separate data and power cables, PoE provides the advantages of simplicity and cost savings, while adding new intelligent device control capabilities. Driven by the need to connect emerging power hungry IoT devices, PoE technology has progressed with the introduction of the IEEE 802.3bt standard. This new standard allows switches and powered devices to operate above 30 Watts of PoE per port and support up to 60 and even 90 Watts of PoE per port.

Advantages of PoE

PoE runs over twisted pair cabling, which is prevalent worldwide and can also be quickly installed, often without a skilled electrician. Twisted pair cabling can be installed in difficult to reach locations where pulling electrical power is not feasible.

This technology also includes capabilities to lower power consumption during idle periods. And with the data signal capabilities, status can be monitored and information shared between a switch and powered device in order to manage the amount of power delivered to the remote device.

Benefits of PoE

PoE brings the following benefits to the access layer:

  • Simplicity—Eliminating the need for separate data and power cables, PoE can be installed quickly and simply.
  • Cost savings—PoE eliminates the need to pull electrical to inaccessible locations.
  • Intelligent device control—PoE allows you to manage the amount of power delivered to remove devices.
  • Future-proofing—PoE addresses network capacity planning for both speed-based performance and to power network devices. It supports the explosion of IoT devices and the latest wireless technologies.
  • Industry standards—PoE technology has progressed with the introduction of the IEEE 802.3bt standard. This new standard allows switches and powered devices to operate above 30 Watts of PoE per port and support up to 60 and even 90 Watts of PoE per port.

Support for high-power PoE standards

Aruba consistently delivers standards-compliant, rather than proprietary solutions, to the marketplace. This focus on standards enables customers to be confident in the design and deployment of a high power PoE solution from Aruba.

To meet the needs of large enterprises to SMB, Aruba CX switches support a range of PoE power and PoE power budgets. Aruba switches with IEEE 802.3bt (Class 6) provide up to 60 Watts to all standards-compatible powered devices, which means your infrastructure investment will provide value into the future as new devices and applications come to market. As further proof of our commitment to industry standards, Aruba switches are among the first products to be listed on the Ethernet Alliance (EA) Certified PoE Product Registry which helps ensure reliable, network interoperability.

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