Cisco WS-C3560E-48PD-SF Command Reference - Page 345

Chapter 2 Catalyst 3560 Switch Cisco IOS Commands power inline consumption power inline consumption Use the power inline consumption global or interface configuration command on the switch stack or on a standalone switch to override the amount of power specified by the IEEE classification for the device by specifying the wattage used by each powered device. Use the no form of this command to return to the default power setting. power inline consumption default wattage no power inline consumption default Syntax Description wattage Specify the power that the switch budgets for the port. The range is 4000 to 15400 milliwatts. Defaults The default power on each Power over Ethernet (PoE) port is 15400 milliwatts. Command Modes Global configuration Interface configuration Command History Release 12.2(25)SEC Modification This command was introduced. Usage Guidelines When Cisco powered devices are connected to PoE ports, the switch uses Cisco Discovery Protocol (CDP) to determine the actual power consumption of the devices, and the switch adjusts the power budget accordingly. This does not apply to IEEE third-party powered devices. For these devices, when the switch grants a power request, the switch adjusts the power budget according to the powered-device IEEE classification. If the powered device is a Class 0 (class status unknown) or a Class 3, the switch budgets 15400 milliwatts for the device, regardless of the actual amount of power needed. If the powered device reports a higher class than its actual consumption or does not support power classification (defaults to Class 0), the switch can power fewer devices because it uses the IEEE class information to track the global power budget. By using the power inline consumption wattage configuration command, you can override the default power requirement specified by the IEEE classification. The difference between what is mandated by the IEEE classification and what is actually needed by the device is reclaimed into the global power budget for use by additional devices. You can then extend the switch power budget and use it more effectively. For example, if the switch budgets 15400 milliwatts on each PoE port, you can connect only 24 Class 0 powered devices. If your Class 0 device power requirement is actually 5000 milliwatts, you can set the consumption wattage to 5000 milliwatts and connect up to 48 devices. The total PoE output power available on a 24-port or 48-port switch is 370,000 milliwatts. Caution You should carefully plan your switch power budget and make certain not to oversubscribe the power supply. 78-16405-05 Catalyst 3560 Switch Command Reference 2-313