29-2A PD is a device accepting power from the PSE. There are standard PDs and nonstandard PDs. Astandard PD refers to the one that complies with IEEE 802.3af. The PD that is being powered by thePSE can be connected to other power supply units for redundancy backup.Protocol SpecificationThe protocol specification related to PoE is IEEE 802.3af.PoE Configuration Task ListComplete these tasks to configure PoE:Task RemarksConfiguring the PoE Interface RequiredConfiguring PoE Power Management OptionalConfiguring the PoE Monitoring Function OptionalUpgrading PSE Processing Software Online OptionalConfiguring a PD Disconnection Detection Mode OptionalEnabling the PSE to Detect Nonstandard PDs Optionalz When the PoE power or PSE fails, you cannot configure PoE.z Turning off of the PoE power during the startup of the device might result in the failure to restorethe PoE configuration.Configuring the PoE InterfaceYou can configure a PoE interface in either of the following two ways:z Adopting the command line.z Configuring a PoE configuration file and applying the file to the specified PoE interface(s).Usually, you can adopt the command line to configure a single PoE interface, and adopt a PoEconfiguration file to configure multiple PoE interfaces at the same time.You can adopt either mode to configure, modify, or delete a PoE configuration parameter under thesame PoE interface.The PSE supplies power for a PoE interface in the following two modes:z Signal cables modes: For a device with only signal cables, power is supplied over signal cables.
