公开(公告)号：US06172980B2

公开(公告)日：2001-01-09

申请号：US08927913

申请日：1997-09-11

申请人： John A. Flanders ,  Ryan T. Ross ,  William D. Townsend ,  Thomas A. Lamaire ,  Thomas V. Radogna ,  Brian W. Bailey ,  Marc D. Sousa

发明人： John A. Flanders ,  Ryan T. Ross ,  William D. Townsend ,  Thomas A. Lamaire ,  Thomas V. Radogna ,  Brian W. Bailey ,  Marc D. Sousa

IPC分类号： H04L1256

CPC分类号： H04L45/00 ,  H04L12/4625 ,  H04L29/06 ,  H04L45/52 ,  H04L69/22

摘要： A network bridge/router for identifying a data unit to be routed by a network bridge/router, for identifying a protocol associated with the received data unit to be routed, and for carrying out appropriate data unit transfer operations, all in hardware. A Receive Header Processor (RHP) analyzes the destination address of the received data unit, in hardware, for determining if routing or bridging is required. If routing is required, the RHP uses portions of the received data unit header as a compare value against predefined values stored in data structures which provide a protocol ID identifying the protocol of the received data unit and serving as an index to the appropriate microcode handling routine, executed by the RHP, for the data unit. The handling routine causes the RHP to forward data unit identifying information appropriate to the identified protocol and obtained from the received data unit to further hardware-based data unit processing elements. These further data unit processing elements are adaptable to the received data unit cast state (e.g. unicast, multicast, broadcast), bridging and/or routing requirements, and received data unit protocol.

摘要翻译： 一种用于识别由网桥/路由器路由的数据单元的网桥/路由器，用于识别与待路由的所接收的数据单元相关联的协议，以及用于执行适当的数据单元传送操作。 接收头处理器（RHP）以硬件方式分析接收到的数据单元的目的地地址，以确定是否需要路由或桥接。 如果需要路由，则RHP使用接收的数据单元头部的部分作为与存储在数据结构中的预定义值的比较值，该数据结构提供标识接收到的数据单元的协议的协议ID，并且用作适当的微代码处理例程的索引 由RHP执行，用于数据单元。 处理例程使得RHP将从所接收的数据单元获得的与识别的协议相适应的数据单元识别信息转发到另外的基于硬件的数据单元处理单元。 这些另外的数据单元处理元件适应于所接收的数据单元投射状态（例如单播，多播，广播），桥接和/或路由需求以及接收的数据单元协议。

公开(公告)号：US07340325B2

公开(公告)日：2008-03-04

申请号：US11196790

申请日：2005-08-03

申请人： Marc D. Sousa ,  Michael Sean McCormack

发明人： Marc D. Sousa ,  Michael Sean McCormack

IPC分类号： H02J13/00

CPC分类号： H04W52/281 ,  H04W52/343 ,  H04W52/346

摘要： A power controller for power sourcing equipment in a distributed power network provides power down policies and priority in the event of a power supply failure. The power down priority and policy permits implementation of a rapid decrease in the power demand of the distributed power network to avoid overload of a backup power supply. The priority may be derived based on the relative position of port information in a linked list. Devices associated with a high priority can remain powered in response to a main power supply failure, while lower priority devices can be rapidly powered down to reduce the overall load demand on the backup power supply. The ability to configure ports on the basis of priority and available policies provides a flexible and simple implementation of a response in the event of a main power supply failure.

摘要翻译： 分布式电力网络中的电源设备的电源控制器在电源故障的情况下提供掉电策略和优先级。 断电优先级和策略允许实现分布式电力网的电力需求的快速下降，以避免备用电源的过载。 可以基于链接列表中的端口信息的相对位置导出优先级。 与高优先级相关联的设备可以响应于主电源故障而保持供电，而较低优先级的设备可以快速断电以减少备用电源的总体负载需求。 基于优先级和可用策略配置端口的能力提供了在主电源故障的情况下灵活简单地实现响应。