Chapter 7: Power Over Ethernet Commands - Extreme Networks ExtremeWare XOS Command Reference Manual

7 Power Over Ethernet Commands
Power over Ethernet (PoE) is an effective method of supplying 48 VDC power to certain types of
powered devices (PDs) through Category 5 or Category 3 twisted pair Ethernet cables. PDs include
wireless access points, IP telephones, laptop computers, web cameras, and other devices. With PoE, a
single Ethernet cable supplies power and the data connection, reducing costs associated with separate
power cabling and supply. PoE for ExtremeWare XOS includes a method of detection to assure that
power is delivered to devices that meet the IEEE 802.3af specification for PoE, as well as to many legacy
devices.
Summary of PoE Software Features
The G48P PoE module for the BlackDiamond 8800 family of switches (formerly known as Aspen)
supports the following PoE software features:
Configuration and control of the power distribution for PoE at the system, slot, and port levels
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Real-time discovery and classification of 802.3af-compliant PDs and many legacy (non-standard)
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devices
Monitor and control of PoE fault conditions
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Support for configuring and monitoring PoE status at the system, slot, and port levels
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LED control for indicating the port's PoE inline power state
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Management of an over-subscribed power budget
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Beginning with ExtremeWare XOS version 11.3, support for hitless failover in a chassis with two
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MSMs
For more conceptual information about configuring and managing PoE, see the ExtremeWare XOS
Concepts Guide.
ExtremeWare XOS 11.3 Command Reference
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