Power over Ethernet

Cisco Systems has released a number of products for its intelligent switches that support the IEEE 802.3af Power over Ethernet (PoE) standard.

Cisco Systems has relased a number of products that support the IEEE 802.3af Power over Ethernet (PoE) standard.

PoE allows the delivery of DC power over the same Copper wire as Ethernet and enables customers to integrate a host of new powered network-attached devices to their existing LAN infrastructure.

With PoE, users do not need to provide wall power for each PoE enabled device. This eliminates the cost for additional electrical cabling that would otherwise be necessary for connected devices such as, IP telephones, wireless LAN access points, video surveillance cameras, building management systems, and remote video kiosks. Moreover, PoE allows businesses to isolate critical devices on a single power system, enabling the entire system to be supported by UPS backup.

The new product line up features 802.3af compliant 10/100/1000 and 10/100 PoE line cards for the Cisco Catalyst 6500 and 4500 Series of intelligent switches, new PoE options for the Catalyst 3750 and a new standalone PoE switch family, the Catalyst 3560.

All Cisco Catalyst 802.3af PoE products support the optional IEEE power classification feature that allows switches to recognise powered end devices that identify the amount of power required. Cisco further extends its support for Power Classification with integrated Intelligent Power Management capabilities that enable more scalable management of power delivery beyond the standard.

These capabilities provide granular control and optimisation of power allocation for each PoE port, allowing for precise device power requirement identification and enabling port-based power reservation, allocation, oversubscription management and prioritization of power delivery in the event of switch power shortage.

For investment protection, all 802.3af compliant PoE products also support Cisco’s pre-standard PoE implementation and are therefore backwards compatible with Cisco’s installed base of powered end-devices including IP telephones and wireless access points.

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