1-4z By default, the PoE function on a port is enabled by the default configuration file when the device isdelivered.z If you delete the default configuration file without specifying another one, the PoE function on a portwill be disabled after you restart the device.Setting the Maximum Output Power on a PortThe maximum power that can be supplied by each Ethernet electrical port of a PoE-enabledS5100-SI/EI switch to its PD is 15,400 mW. In practice, you can set the maximum power on a portdepending on the actual power of the PD, in the range of 1,000 to 15,400 mW and in the granularity of1 mW.Table 1-5 Set the maximum output power on a portOperation Command DescriptionEnter system view system-view —Enter Ethernet port view interface interface-typeinterface-number —Set the maximum output poweron the port poe max-power max-power Required15,400 mW by default.Setting PoE Management Mode and PoE Priority of a PortWhen a switch is close to its full load in supplying power, you can adjust the power supply of the switchthrough the cooperation of the PoE management mode and the port PoE priority settings. S5100-SI/EIseries switches support two PoE management modes, auto and manual. The auto mode is adopted bydefault.z auto: When the switch is close to its full load in supplying power, it will first supply power to the PDsthat are connected to the ports with critical priority, and then supply power to the PDs that areconnected to the ports with high priority. For example: Port A has the priority of critical. When theswitch PoE is close to its full load and a new PD is now added to port A, the switch will power downthe PD connected to the port with the lowest priority and turn to supply power to this new PD. Ifmore than one port has the same lowest priority, the switch will power down the PD connected tothe port with larger port number.z manual: When the switch is close to its full load in supplying power, it will not make change to itsoriginal power supply status based on its priority when a new PD is added. For example: Port A hasthe priority critical. When the switch PoE is close to its full load and a new PD is now added to portA, the switch just gives a prompt 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 set the PoEmanagement mode and PoE priority of a port.
