Netgear XSM4324FS CLI Manual Software Version 12.x - Page 1091

M4300 Intelligent Edge Series Fully Managed Stackable Switches About PoE Power over Ethernet (PoE) describes a technology to pass electrical power safely along with data on existing Ethernet cabling. The power supply equipment (PSE) is the device or switch that delivers electrical power, and the PD or powered device is the end device that powers up through the power delivered along the Ethernet cable. The switch supports PoE and PoE+ as follows: • PoE (802.3af 2003). This is the original standard, also known as the low-power standard, which mandates delivery of up to 15.4 watts by the PSE. Because of power dissipation, only 12.95 watts are assured to be available at the powered device (PD). The PD needs to be designed so that it can accept power over Ethernet cabling. Category 3 cables can be used to deliver power to the PD. However, with the advent of 802.11n, the newer wireless APs required more power. To account for this, a newer standard was developed in 2009, known as 802.3at. • PoE+ (802.3at-2009). This is a newer standard than PoE. This is also known as the high-power standard, which mandates delivery of up to 34.2 watts by the PSE. Because of power dissipation, PoE+ provides only a maximum of 25.5 watts at the powered device. Some PSEs can provide up to 51 watts. Before this standard became available in 2009, the industry started using different implementations to allow for more power. All these needed to be brought under the purview of the newer 802.3at standard. Note: PoE and PoE+ are supported only on physical, copper interfaces. The default port mode is PoE+. PoE Commands poe Use this command to enable the Power over Ethernet (PoE) functionality on a global basis or per interface. Default Format Mode enabled poe Global Config Interface Config Power over Ethernet Commands 1091 CLI Command Reference Manual