Hewlett-packard Development Company, L.P.

Hewlett Packard Enterprise Development LP

Tsun-Yao Chang

Rachel Callison

David G Rohrer

Examples described herein relate to improved powering down of PoE interfaces in a network device. In response to detecting a fault that interrupts a flow of power from the PSUs to one or more of the PoE interfaces, the examples determine a total operational power value based on an operational power value of each operational PSU of the PSUs and determine a total available power value based on the total operational power value and a reserved power value. For each of the PoE interfaces, the examples determine whether a threshold power value for the PoE interface exceeds the total available power value and power down the PoE interface in response to determining that the threshold power value for the PoE interface exceeds the total available power value.

Power down of power over Ethernet interfaces

Examples described herein provide improved power down of PoE interfaces. Examples described herein may set a power fault value for each of a plurality of PSUs, and set a power threshold value for each of a plurality of PoE interfaces. Examples described herein may detect a fault that interrupts a flow of power from a subset of the PSUs to at least one of the PoE interfaces, and based on detecting the fault, for each PSU in the subset of the PSUs, add the power fault value for the PSU to a total power fault value. Examples described herein may, for each of the PoE interfaces, determine whether the total power fault value satisfies the power threshold value for the PoE interface, and based on a determination that the total power fault value satisfies the power threshold value for the PoE interface, power down the PoE interface.

Power down of power over ethernet interfaces

A controller of a data switch determines a power budget based upon respective capacities of power supplies coupled thereto. Operating power is allocated to requesting network devices in accordance with the power budget. The power budget can be re-determined periodically, in response to changes in operating temperature, or in accord with other factors and the power allocation adjusted accordingly. Operating power provision to network devices can be managed so as to maintain a greatest allowable level of system operation while protecting power supplies against thermally-related or overload damage.

Data switch with power budgeting

Modules, modular devices, and modular systems are provided. Some examples include a backplane oriented in a first plane, a first module including a major surface oriented parallel to the first plane and a first minor surface oriented perpendicular to the first plane, wherein the major surface of the first module includes a connector thereon that releasably mates with a corresponding connector located on a first side of the backplane. Some examples include a second module including a major surface oriented perpendicular to the first plane and a first minor surface oriented parallel to the first plane, wherein the first minor surface of the second module includes a connector thereon that releasably mates with a corresponding connector located on a second side of the backplane. Circuitry within the first module can provide interconnections for the second module. The first and second modules can be fabric and interface modules, respectively.

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Roseville, CA, United States of America

Tsun-Yao Chang