1-5Table 1-6 Set the PoE management mode and PoE priority of a portOperation Command DescriptionEnter system view system-view —Set the PoE managementmode for the switchpoe power-management{ auto | manual }Requiredauto by default.Enter Ethernet port view interface interface-typeinterface-number —Se the PoE priority of a port poe priority { critical | high |low }Requiredlow by default.Setting the PoE Mode on a PortPoE mode of a port falls into two types, signal mode and spare mode.z Signal mode: DC power is carried over the data pairs (1,2,3,6) of category-3/5 twisted pairs.z Spare mode: DC power is carried over the spare pairs (4,5,7,8) of category-3/5 twisted pairs.Currently, S5100-SI/EI series Ethernet switches do not support the spare mode.After the PoE feature is enabled on the port, perform the following configuration to set the PoE mode ona port.Table 1-7 Set the PoE mode on a portOperation Command DescriptionEnter system view system-view —Enter Ethernet port view interface interface-typeinterface-number —Set the PoE mode on the portto signal poe mode signal Optionalsignal by default.Configuring the PD Compatibility Detection FunctionAfter the PD compatibility detection function is enabled, the switch can detect the PDs that do notconform to the 802.3af standard and supply power to them.After the PoE feature is enabled, perform the following configuration to enable the PD compatibilitydetection function.Table 1-8 Configure the PD compatibility detection functionOperation Command DescriptionEnter system view system-view —Enable the PD compatibilitydetection function poe legacy enable RequiredDisabled by default.