公开(公告)号：US20180136714A1

公开(公告)日：2018-05-17

申请号：US15872375

申请日：2018-01-16

Applicant: Cisco Technology, Inc.

Inventor： Krishna Kumar VAVILALA ,  Ahmed FARAZ ,  Saravanan M. K ,  Sachin MODI

IPC: G06F1/32 ,  G06F1/26 ,  H04L12/10

Abstract: Embodiments described herein include a Power over Ethernet (PoE) enabled device that uses 2-event classification when allocating power to coupled powered devices (PDs). If the 2-event classification is successful, power sourcing equipment (PSE) on the PoE device allocates a maximum power allotment to the PD. Once powered on, the PD may determine it does not require the maximum power allotment and negotiate a reduction in the power allotted to the PD.

公开(公告)号：US20170031421A1

公开(公告)日：2017-02-02

申请号：US14810865

申请日：2015-07-28

Applicant: Cisco Technology, Inc.

Inventor： Daniel Lee CHAPLIN ,  Stephen Patrick KOLECKI ,  Krishna Kumar VAVILALA ,  Chris DESINIOTIS

IPC: G06F1/32

CPC classification number: G06F1/3209 ,  H04L12/12 ,  H04W52/0229 ,  Y02D70/00

Abstract: Embodiments generally provide techniques for waking up a plurality of network devices from a power saving mode via layer 1 (L1) signaling. Embodiments include entering a power saving mode at a first network device, wherein logic for processing layer 2 and higher data is inactive during the power saving mode and receiving, while the first network device is in the power saving mode, a L1 bit stream from a second network device connected to the first network device. Additionally, embodiments include, upon determining that a predefined code is present within the received L1 bit stream, exiting the power saving mode at the first network device and transmitting a second L1 bit stream containing the predefined code to a third network device.

Abstract translation: 实施例通常提供用于经由层1（L1）信令从功率节省模式唤醒多个网络设备的技术。 实施例包括在第一网络设备处进入省电模式，其中处理层2和更高数据的逻辑在省电模式期间不活动，并且在第一网络设备处于省电模式的同时接收来自 第二网络设备连接到第一网络设备。 另外，实施例包括在确定在接收的L1比特流中存在预定义代码时，在第一网络设备处退出功率节省模式，并将包含预定义代码的第二L1比特流发送到第三网络设备。

公开(公告)号：US20160062432A1

公开(公告)日：2016-03-03

申请号：US14474356

申请日：2014-09-02

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ahmed FARAZ ,  Krishna Kumar VAVILALA ,  Kabiraj SETHI

IPC: G06F1/26 ,  H04L12/10

CPC classification number: G06F1/266 ,  H04L12/10 ,  H04L12/40045 ,  H04L12/413

Abstract: Embodiments described herein improve availability of a power plane in a network device by using a PoE manager that is separate from an operating system in the network device. For example, when the operating system (or a PoE application executing in the operating system) becomes unavailable, either because of failure or system upgrade, the PoE manager continues managing a power plane in the network device such that connected PDs continue to receive DC power. Stated differently, by using a PoE manager that is separate from the operating system, there is no fate sharing between the PoE manager and the operating system. If the operating system is unavailable, the PoE manager continues to provide the same power allotment to the PDs. As such, updates and failures which previously made the power plane unavailable no longer affect the power supplied to the PDs.

Abstract translation: 本文描述的实施例通过使用与网络设备中的操作系统分离的PoE管理器来提高网络设备中的电力平面的可用性。 例如，当操作系统（或操作系统中执行的PoE应用程序）变得不可用时，由于故障或系统升级，PoE管理器继续管理网络设备中的电源平面，以使连接的PD继续接收直流电源 。 换句话说，通过使用与操作系统不同的PoE管理器，PoE管理器和操作系统之间没有命运共享。 如果操作系统不可用，PoE管理器将继续向PD提供相同的功率分配。 因此，以前使电源平面不可用的更新和故障不再影响提供给PD的电源。

公开(公告)号：US20210325950A1

公开(公告)日：2021-10-21

申请号：US17302641

申请日：2021-05-07

Applicant: Cisco Technology, Inc.

Inventor： Ahmed FARAZ ,  Krishna Kumar VAVILALA ,  Kabiraj SETHI

IPC: G06F1/26 ,  H04L12/10 ,  H04L12/40 ,  H04L12/413

Abstract: Embodiments described herein improve availability of a power plane in a network device by using a PoE manager that is separate from an operating system in the network device. For example, when the operating system (or a PoE application executing in the operating system) becomes unavailable, either because of failure or system upgrade, the PoE manager continues managing a power plane in the network device such that connected PDs continue to receive DC power. Stated differently, by using a PoE manager that is separate from the operating system, there is no fate sharing between the PoE manager and the operating system. If the operating system is unavailable, the PoE manager continues to provide the same power allotment to the PDs. As such, updates and failures which previously made the power plane unavailable no longer affect the power supplied to the PDs.

公开(公告)号：US20180181178A1

公开(公告)日：2018-06-28

申请号：US15891908

申请日：2018-02-08

Applicant: Cisco Technology, Inc.

Inventor： Ahmed FARAZ ,  Krishna Kumar VAVILALA ,  Kabiraj SETHI

IPC: G06F1/26 ,  H04L12/413 ,  H04L12/10 ,  H04L12/40

CPC classification number: G06F1/266 ,  H04L12/10 ,  H04L12/40045 ,  H04L12/413

Abstract: Embodiments described herein improve availability of a power plane in a network device by using a PoE manager that is separate from an operating system in the network device. For example, when the operating system (or a PoE application executing in the operating system) becomes unavailable, either because of failure or system upgrade, the PoE manager continues managing a power plane in the network device such that connected PDs continue to receive DC power. Stated differently, by using a PoE manager that is separate from the operating system, there is no fate sharing between the PoE manager and the operating system. If the operating system is unavailable, the PoE manager continues to provide the same power allotment to the PDs. As such, updates and failures which previously made the power plane unavailable no longer affect the power supplied to the PDs.

公开(公告)号：US20170068307A1

公开(公告)日：2017-03-09

申请号：US14845165

申请日：2015-09-03

Applicant: Cisco Technology, Inc.

Inventor： Krishna Kumar VAVILALA ,  Ahmed FARAZ ,  Saravanan M.K ,  Sachin MODI

IPC: G06F1/32 ,  H04L12/10

CPC classification number: G06F1/3296 ,  G06F1/266 ,  H04L12/10

Abstract: Embodiments described herein include a Power over Ethernet (PoE) enabled device that uses 2-event classification when allocating power to coupled powered devices (PDs). If the 2-event classification is successful, power sourcing equipment (PSE) on the PoE device allocates a maximum power allotment to the PD. Once powered on, the PD may determine it does not require the maximum power allotment and negotiate a reduction in the power allotted to the PD.

Abstract translation: 本文描述的实施例包括使能以太网供电（PoE）的设备，当向耦合的有源设备（PD）分配功率时，使用2事件分类。 如果2事件分类成功，则PoE设备上的电源设备（PSE）将向PD分配最大功率分配。 一旦通电，PD可以确定其不需要最大功率分配，并协商分配给PD的功率的降低。