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31. 发明授权

US08335213B2 Methods and apparatus related to low latency within a data center 有权
标题翻译：与数据中心内的低延迟相关的方法和设备
公开(公告)号：US08335213B2
公开(公告)日：2012-12-18
申请号：US12495358
申请日：2009-06-30
申请人： Pradeep Sindhu , Gunes Aybay , Jean-Marc Frailong , Anjan Venkatramani , Quaizar Vohra
发明人： Pradeep Sindhu , Gunes Aybay , Jean-Marc Frailong , Anjan Venkatramani , Quaizar Vohra
IPC分类号： H04Q11/00
CPC分类号： H04L49/602 , H04L49/1515 , H04L49/351 , H04L49/357
摘要： In one embodiment, an apparatus includes a switch core that has a multi-stage switch fabric. The multi-stage switch fabric has a set of ingress ports and a set of egress ports. The switch core can be configured to be coupled to a set of edge devices via the set of ingress ports and the set of egress ports. The switch core can be configured to receive a packet from an ingress port from the set of ingress ports. The switch core can be configured to send a set of cells associated with the packet from the ingress port to an egress port from the set of egress ports without a store-and-forward delay associated with a zero-load latency for the switch core.
摘要翻译：在一个实施例中，一种装置包括具有多级交换结构的交换机核心。多级交换结构具有一组入口端口和一组出口端口。交换机核心可以被配置为经由一组入口端口和出口端口组来耦合到一组边缘设备。交换机核心可以配置为从入口端口的一组入口端口接收数据包。交换机核心可以被配置为将来自入口端口的与分组相关联的一组小区从出口端口发送到出口端口，而没有与交换机核心的零负载延迟相关联的存储转发延迟。

32. 发明授权

US08321753B2 Optimization of packet buffer memory utilization 有权
标题翻译：分组缓冲存储器利用率的优化
公开(公告)号：US08321753B2
公开(公告)日：2012-11-27
申请号：US12759313
申请日：2010-04-13
申请人： Pradeep Sindhu , Srihari Vegesna
发明人： Pradeep Sindhu , Srihari Vegesna
IPC分类号： H03M13/00
CPC分类号： G06F11/006 , G06F11/1008 , H03M13/09 , H03M13/096 , H03M13/1515 , H03M13/19 , H04L1/0052
摘要： A method performed by an I/O unit connected to another I/O unit in a network device. The method includes receiving a packet; segmenting the packet into a group of data blocks; storing the group of data blocks in a data memory; generating data protection information for a data block of the group of data blocks; creating a control block for the data block; storing, in a control memory, a group of data items for the control block, the group of data items including information associated with a location, of the data block, within the data memory and the data protection information for the data block; performing a data integrity check on the data block, using the data protection information, to determine whether the data block contains a data error; and outputting the data block when the data integrity check indicates that the data block does not contain a data error.
摘要翻译：由与网络设备中的另一I / O单元连接的I / O单元执行的方法。该方法包括接收分组; 将分组分割成一组数据块; 将数据块组存储在数据存储器中; 生成数据块组的数据块的数据保护信息; 创建数据块的控制块; 在控制存储器中存储用于控制块的一组数据项，数据组的数据项组，包括与数据块的位置相关联的信息，数据存储器内的数据块和数据块的数据保护信息; 使用数据保护信息对数据块执行数据完整性检查，以确定数据块是否包含数据错误; 并且当数据完整性检查指示数据块不包含数据错误时，输出数据块。

33. 发明申请

US20120275307A1 METHODS AND APPARATUS FOR FLOW-CONTROLLABLE MULTI-STAGED QUEUES 有权
标题翻译：流量可控多阶段队列的方法和装置
公开(公告)号：US20120275307A1
公开(公告)日：2012-11-01
申请号：US13544604
申请日：2012-07-09
申请人： Avanindra Godbole , Pradeep Sindhu , Jean-Marc Frailong
发明人： Avanindra Godbole , Pradeep Sindhu , Jean-Marc Frailong
IPC分类号： H04L12/24
CPC分类号： H04L47/30 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/263 , H04L47/266 , H04L47/50 , H04L47/60 , H04L49/505 , H04L49/90
摘要： In one embodiment, a method includes sending a first flow control signal to a first stage of transmit queues when a receive queue is in a congestion state. The method also includes sending a second flow control signal to a second stage of transmit queues different from the first stage of transmit queues when the receive queue is in the congestion state.
摘要翻译：在一个实施例中，一种方法包括当接收队列处于拥塞状态时，向发射队列的第一级发送第一流控制信号。该方法还包括当接收队列处于拥塞状态时，将第二流控制信号发送到与发送队列的第一级不同的发送队列的第二级。

34. 发明授权

US08238246B2 Filtering and route lookup in a switching device 有权
标题翻译：在交换设备中过滤和路由查找
公开(公告)号：US08238246B2
公开(公告)日：2012-08-07
申请号：US13163477
申请日：2011-06-17
申请人： Dennis C. Ferguson , Rajiv Patel , Gerald Cheung , Pradeep Sindhu
发明人： Dennis C. Ferguson , Rajiv Patel , Gerald Cheung , Pradeep Sindhu
IPC分类号： H04L12/26
CPC分类号： H04L45/745 , H04L45/00 , H04L45/60 , H04L45/7457 , H04L47/10 , H04L47/11 , H04L47/125 , H04L47/20 , H04L49/205 , H04L49/3009 , H04L49/3036 , H04L49/3072 , H04L63/0227 , H04L63/1458 , H04L69/22
摘要： Methods and devices for processing packets are provided. The processing device may Include an input interface for receiving data units containing header information of respective packets; a first module configurable to perform packet filtering based on the received data units; a second module configurable to perform traffic analysis based on the received data units; a third module configurable to perform load balancing based on the received data units; and a fourth module configurable to perform route lookups based on the received data units.
摘要翻译：提供了处理数据包的方法和设备。处理装置可以包括用于接收包含相应分组的报头信息的数据单元的输入接口; 第一模块，可配置为基于所接收的数据单元执行分组过滤; 第二模块，可配置为基于所接收的数据单元执行流量分析; 第三模块，可配置为基于所接收的数据单元执行负载平衡; 以及第四模块，其可配置为基于所接收的数据单元执行路线查找。

35. 发明授权

US08154996B2 Methods and apparatus for flow control associated with multi-staged queues 有权
标题翻译：与多级队列相关联的流控制的方法和装置
公开(公告)号：US08154996B2
公开(公告)日：2012-04-10
申请号：US12242224
申请日：2008-09-30
申请人： Avanindra Godbole , Pradeep Sindhu , Jean-Marc Frailong
发明人： Avanindra Godbole , Pradeep Sindhu , Jean-Marc Frailong
IPC分类号： H04L12/24
CPC分类号： H04L47/30 , H04L47/10 , H04L47/11 , H04L47/26 , H04L47/263 , H04L47/266 , H04L47/50 , H04L47/60 , H04L49/505 , H04L49/90
摘要： In one embodiment, a method, comprising receiving at a receive side of a physical link a request to suspend transmission of data from a queue within a transmit side of a first stage of queues and to suspend transmission via a path including the physical link, a portion of the first stage of queues, and a portion of a second stage of queues. The method includes sending, in response to the request, a flow control signal to a flow control module configured to schedule transmission of the data from the queue within the transmit side of the first stage of queues. The flow control signal is associated with a first control loop including the path and differing from a second control loop that excludes the first stage of queues.
摘要翻译：在一个实施例中，一种方法，包括在物理链路的接收侧接收暂停从队列的第一级的发送侧内的队列传输数据的请求，并且经由包括所述物理链路的路径暂停发送，队列的第一阶段的部分和队列的第二阶段的一部分。该方法包括响应于该请求向流控制模块发送流控制信号，该流控制模块被配置为调度在队列的第一级的发送侧内的队列的数据传输。流控制信号与包括路径的第一控制回路相关联，并且与排除第一级队列的第二控制循环不同。

36. 发明授权

US08040901B1 Packet queueing within ring networks 有权
标题翻译：环网内的数据包排队
公开(公告)号：US08040901B1
公开(公告)日：2011-10-18
申请号：US12360609
申请日：2009-01-27
申请人： Kireeti Kompella , Pradeep Sindhu , Jean-Marc Frailong , David J. Ofelt
发明人： Kireeti Kompella , Pradeep Sindhu , Jean-Marc Frailong , David J. Ofelt
IPC分类号： H04L12/28
CPC分类号： H04L12/5693 , H04L12/437 , H04L47/10 , H04L47/50
摘要： In general, techniques are described for packet queuing within ring networks. In accordance with the techniques, a network device of a ring network comprises a memory having a different queue for each order-dependent pair of the network devices. Each pair represents a different order-dependent combination of the network devices that includes an ingress network device that provides an ingress to the ring network and an egress network device that provides an egress from the ring network. The network device further comprises an interface for receiving a packet from a neighboring one of the plurality of network devices and a control unit that, in response to receiving the packet, stores the packet to one of the queues based on which network devices is the ingress and which network device is the egress for the packet. The control unit forwards the stored packet via the ring network according to a scheduling algorithm.
摘要翻译：一般来说，技术描述为环形网络内的数据包排队。根据这些技术，环形网络的网络设备包括具有针对网络设备的每个顺序依赖对的不同队列的存储器。每对代表网络设备的不同顺序组合，其包括向环网提供入口的入口网络设备和从环网提供出口的出口网络设备。所述网络设备还包括用于从所述多个网络设备中的相邻的一个网络设备接收分组的接口和响应于接收到所述分组而将所述分组存储到所述队列中的一个基于哪个网络设备是所述入口的控制单元哪个网络设备是分组的出口。控制单元根据调度算法经由环网转发存储的分组。

37. 发明授权

US08036117B1 Dequeuing and congestion control systems and methods 有权
标题翻译：出站和拥塞控制系统和方法
公开(公告)号：US08036117B1
公开(公告)日：2011-10-11
申请号：US12475210
申请日：2009-05-29
申请人： Pradeep Sindhu , Debashis Basu , Jayabharat Boddu , Avanindra Godbole
发明人： Pradeep Sindhu , Debashis Basu , Jayabharat Boddu , Avanindra Godbole
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L47/10 , H04L47/12 , H04L47/283 , H04L47/32 , H04L47/50 , H04L47/521 , H04L47/6215 , H04L49/90 , H04L49/901 , H04L49/9084
摘要： A system provides congestion control in a network device. The system includes multiple queues, a dequeue engine, a drop engine, and an arbiter. The queues temporarily store data. The dequeue engine selects a first one of the queues and dequeues data from the first queue. The drop engine selects a second one of the queues to examine and selectively drop data from the second queue. The arbiter controls selection of the queues by the dequeue engine and the drop engine.
摘要翻译：系统在网络设备中提供拥塞控制。该系统包括多个队列，出队引擎，丢弃引擎和仲裁器。队列临时存储数据。出队引擎选择第一个队列，并从第一个队列中取出队列数据。丢包引擎选择第二个队列来检查和选择性地从第二个队列中删除数据。仲裁器控制出队引擎和丢包引擎对队列的选择。

38. 发明申请

US20110235642A1 PRESERVING THE ORDER OF PACKETS THROUGH A DEVICE 审中-公开
标题翻译：通过设备保存包装的订单
公开(公告)号：US20110235642A1
公开(公告)日：2011-09-29
申请号：US13153799
申请日：2011-06-06
申请人： Stefan DYCKERHOFF , Pankaj Patel , Pradeep Sindhu , Ashok Krishnamurthi , Hann-Hwan Ju , Ramalingam K. Anand , Dennis C. Ferguson , Chang-Hong Wu
发明人： Stefan DYCKERHOFF , Pankaj Patel , Pradeep Sindhu , Ashok Krishnamurthi , Hann-Hwan Ju , Ramalingam K. Anand , Dennis C. Ferguson , Chang-Hong Wu
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/60 , H04L47/125 , H04L49/103 , H04L49/45 , H04L49/552
摘要： A network device includes one or more sprayers, multiple packet processors, and one or more desprayers. The sprayers receive packets on at least one incoming packet stream and distribute the packets according to a load balancing scheme that balances the number of bytes of packet data that is given to each of the packet processors. The packet processors receive the packets from the sprayers and process the packets to determine routing information for the packets. The desprayers receive the processed packets from the packet processors and transmit the packets on at least one outgoing packet stream based on the routing information.
摘要翻译：网络设备包括一个或多个喷雾器，多个分组处理器和一个或多个解卷器。喷雾器在至少一个输入分组流上接收分组，并根据负载平衡方案分发分组，该负载平衡方案平衡给予每个分组处理器的分组数据的字节数。分组处理器接收来自喷雾器的分组，并处理分组以确定分组的路由信息。解散器从分组处理器接收处理的分组，并基于路由信息在至少一个输出分组流上传送分组。

39. 发明授权

US08009561B1 Systems and methods for permitting queues to oversubscribe 有权
标题翻译：允许队列超额认购的系统和方法
公开(公告)号：US08009561B1
公开(公告)日：2011-08-30
申请号：US12565852
申请日：2009-09-24
申请人： Pradeep Sindhu , Debashis Basu , Jayabharat Boddu , Avanindra Godbole
发明人： Pradeep Sindhu , Debashis Basu , Jayabharat Boddu , Avanindra Godbole
IPC分类号： G01R31/08
CPC分类号： H04L47/525 , H04L47/50 , H04L47/522
摘要： A system permits queues to use more than an allocated amount of bandwidth. The system allocates an amount of bandwidth to each of the queues and determines whether any of the queues is using less than the allocated amount of bandwidth. If so, the system reallocates the allocated bandwidth from one of the queues to at least one other one of the queues based on the amount of bandwidth used by each of the queues.
摘要翻译：系统允许队列使用多于分配的带宽量。系统为每个队列分配一定量的带宽，并确定任何一个队列是否使用小于分配的带宽量。如果是这样，则系统根据每个队列使用的带宽量，将所分配的带宽从一个队列重新分配到至少一个队列中。

40. 发明申请

US20100220590A1 SYSTEMS AND METHODS FOR DROPPING DATA USING A DROP PROFILE 有权
标题翻译：使用DROP配置文件删除数据的系统和方法
公开(公告)号：US20100220590A1
公开(公告)日：2010-09-02
申请号：US12780607
申请日：2010-05-14
申请人： Pradeep Sindhu , Debashis Basu , Jayabharat Boddu , Avanindra Godbole
发明人： Pradeep Sindhu , Debashis Basu , Jayabharat Boddu , Avanindra Godbole
IPC分类号： H04L12/24
CPC分类号： H04L47/32 , H04L47/10 , H04L47/23 , H04L47/30 , H04L47/326 , H04L49/90 , H04L49/9078
摘要： A system selectively drops data from queues. The system includes a drop table that stores drop probabilities. The system selects one of the queues to examine and generates an index into the drop table to identify one of the drop probabilities for the examined queue. The system then determines whether to drop data from the examined queue based on the identified drop probability.
摘要翻译：系统有选择地从队列中删除数据。该系统包括存储丢弃概率的丢弃表。系统选择一个队列来检查并生成一个索引到丢包表中，以识别已检查队列的一个丢弃概率。系统然后基于所识别的丢弃概率来确定是否从检查的队列中丢弃数据。

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