The negotiation allows a Cisco-powered device, which requires different power levels than its current allocation, to operate. The device can only supply power to or remove power from the PoE port.Ĭisco intelligent power management: The powered device and the device negotiate through power-negotiation CDP messages for an agreed-upon power-consumption level. The device does not reply to the power-consumption The device uses the following protocols and standards to support PoE:Ĭisco Discovery Protocol (CDP) with power consumption: The powered device notifies the device of the amount of power it is consuming. The deviceĭoes not receive redundant power when it is only connected to the PoE port. The following sections provide information about Power over Ethernet (PoE), the supported protocols, and standards and powerĪ PoE-capable switch port automatically supplies power to one of these connected devices if the switch senses that there isĪ Cisco prestandard powered device (such as a Cisco IP phone)Ī powered device can receive redundant power when it is connected to a PoE switch port and to an AC power source. Power inline port priority (on all the configured interfaces) Interfaces can have the power inline port priority command configured, but for the PoE Power Management feature to work, the power inline auto-shutdown command must be configured in global configuration mode.ĭisable the following commands before performing ISSU: To upgrade the supervisor FPGA, use the upgrade hw-programmable cpld filename bootflash: R0 command in EXEC mode. Please upgrade to FPGA from year 2019 and above. This FPGA version does not support power inline auto shutdown feature. The power inline auto-shutdown command, the following message is displayed: If the FPGA version is earlier than 19082605, and the user tries to configure Use the show platform command to verify the supervisor FPGA version. The minimum supervisor field-programmable gate array (FPGA) version that is required for the feature to work is 19082605. The following prerequisites apply to the PoE Power Management feature:
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