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PoE operation
Using the commands described in this chapter, you can:
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Enable or disable PoE operation on individual ports.
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Monitor PoE status and performance.
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Configure a non-default power threshold for SNMP Simple Network Management Protocol. A protocol used for collecting and organizing information about managed devices on IP networks and for modifying that information to change device behavior. and Event Log reporting of PoE consumption on either all PoE ports on the switch or on all PoE ports.
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Specify the port priority you want to use for provisioning PoE power in the event that the PoE resources become oversubscribed.
A PSE Power Sourcing Equipment. A device that provides power on the Ethernet cable detects the power needed by a connected PD Powered Device. Any network device that is powered by PoE technology. before supplying that power via a phase referred to as "searching". If the PSE cannot supply the required amount of power, it does not supply any power. For PoE using a Type 1 device, a PSE will not supply any power to a PD unless the PSE has at least 17 watts available. For example, if a PSE has a maximum available power of 382 watts and is already supplying 378 watts, and is then connected to a PD requiring 10 watts, the PSE will not supply power to the PD.
For PoE+ using Type 2 devices, the PSE must have at least 33 watts available.
