Operation Manual – PoE-PoE ProfileH3C S3100 Series Ethernet Switches Chapter 1 PoE Configuration1-5z manual: When the switch is close to its full load in supplying power, it will notmake change to its original power supply status based on its priority when a newPD is added. For example: Port A has the priority critical. When the switch PoE isclose to its full load and a new PD is now added to port A, the switch just gives aprompt that a new PD is added and will not supply power to this new PD.After the PoE feature is enabled on the port, perform the following configuration to setthe PoE management mode and PoE priority of a port.Table 1-5 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 aportpoe priority { critical |high | low }Requiredlow by default.1.2.5 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-3/5twisted pairs.z Spare mode: DC power is carried over the spare pairs (4,5,7,8) of category-3/5twisted pairs.Currently, S3100 series Ethernet switches do not support the spare mode.After the PoE feature is enabled on the port, perform the following configuration to setthe PoE mode on a port.Table 1-6 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 theport to signal poe mode signal Optionalsignal by default.
