公开(公告)号：US09336101B1

公开(公告)日：2016-05-10

申请号：US14079921

申请日：2013-11-14

申请人： Google Inc.

发明人： Taliver Brooks Heath ,  Shawn M. Ledbetter ,  Bob Felderman

IPC分类号： G06F11/00 ,  G06F11/20

CPC分类号： G06F11/2015 ,  G06F11/3024 ,  G06F11/3062 ,  G06F11/3409 ,  G06F2201/85 ,  H04L12/10

摘要： A network switch includes a power connection configured to receive power from a primary power source and at least two ports. At least a first one of the ports is configured to connect to a first network interface of a first computing device through a communication medium configured to conduct operating power for the network switch. The first network interface is configured to draw electrical power from a power supply of the first computing device and provide, through the network cable, at least a portion of the drawn electrical power as the operating power. A switching circuit is configured to route network data between the ports and a power management circuit coupled at least to the first port. The power management circuit is configured to draw at least a portion of the operating power from the first port, and power the switching circuit using the drawn power responsive to a detected failure of the primary power source.