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31. 发明授权

US07227867B1 Multi-protocol label switching in a network device 有权
标题翻译：网络设备中的多协议标签交换
公开(公告)号：US07227867B1
公开(公告)日：2007-06-05
申请号：US10192859
申请日：2002-07-11
申请人： Dennis C. Ferguson , Der-Hwa Gan
发明人： Dennis C. Ferguson , Der-Hwa Gan
IPC分类号： H04L12/28
CPC分类号： H04L45/50 , H04L45/10 , H04L45/60 , H04L49/3009 , H04L69/22
摘要： A network device for processing data packets includes input logic, a register, route lookup logic and output processing logic. The input logic receives a data packet having at least one multi-protocol label switching (MPLS) tag, stores the packet and forwards a portion of the packet including the MPLS tag. The route lookup logic receives the portion of the packet, generates next hop information based on the MPLS tag and determines whether at least one MPLS tag is to be removed from the packet before the packet is to be output by the network device. The route lookup logic also modifies a start offset value in the register for each MPLS tag that is to be removed and forwards the start offset. The output processing logic receives the start offset and begins processing the data packet for output at a location identified by the start offset.
摘要翻译：用于处理数据分组的网络设备包括输入逻辑，寄存器，路由查找逻辑和输出处理逻辑。输入逻辑接收具有至少一个多协议标签交换（MPLS）标签的数据分组，存储分组并转发包括MPLS标签的分组的一部分。路由查找逻辑接收分组的部分，基于MPLS标签生成下一跳信息，并且确定在网络设备要输出分组之前是否要从分组中移除至少一个MPLS标签。路由查找逻辑还修改要删除的每个MPLS标签的寄存器中的起始偏移值，并转发起始偏移量。输出处理逻辑接收起始偏移并开始处理数据包以便在由起始偏移识别的位置输出。

32. 发明授权

US07209448B2 In-line packet processing 有权
标题翻译：在线包处理
公开(公告)号：US07209448B2
公开(公告)日：2007-04-24
申请号：US10081048
申请日：2002-02-20
申请人： Rasoul Mirzazadeh Oskouy , Dennis C. Ferguson , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Pradeep S. Sindhu , Sreeram Veeragandham , Jeff Zimmer , Michael Hui
发明人： Rasoul Mirzazadeh Oskouy , Dennis C. Ferguson , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Pradeep S. Sindhu , Sreeram Veeragandham , Jeff Zimmer , Michael Hui
IPC分类号： H04J3/26 , H04L12/56
CPC分类号： H04L45/74 , G06F11/08 , H04L1/0041 , H04L12/56 , H04L12/5601 , H04L29/06 , H04L45/00 , H04L45/20 , H04L45/60 , H04L47/6225 , H04L49/103 , H04L49/108 , H04L49/203 , H04L49/25 , H04L49/254 , H04L49/30 , H04L49/3009 , H04L49/3063 , H04L49/3081 , H04L49/555 , H04L49/602 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L69/16 , H04L69/161 , H04L69/22 , H04L69/324 , H04L2012/5652 , H04L2012/5679 , H04Q11/0478
摘要： A method and apparatus for in-line processing a data packet while routing the packet through a router in a system transmitting data packets between a source and a destination over a network including the router. The method includes receiving the data packet and pre-processing layer header data for the data packet as the data packet is received and prior to transferring any portion of the data packet to packet memory. The data packet is thereafter stored in the packet memory. A routing through the router is determined including a next hop index describing the next connection in the network. The data packet is retrieved from the packet memory and a new layer header for the data packet is constructed from the next hop index while the data packet is being retrieved from memory. The new layer header is coupled to the data packet prior to transfer from the router.
摘要翻译：一种用于在通过包括路由器的网络在源和目的地之间传输数据分组的系统中的路由器路由数据包的同时处理数据分组的方法和装置。该方法包括在接收到数据分组并且将数据分组的任何部分传送到分组存储器之前接收数据分组和数据分组的预处理层报头数据。数据分组此后被存储在分组存储器中。确定通过路由器的路由，其包括描述网络中的下一个连接的下一跳索引。从分组存储器检索数据分组，并且在从存储器检索数据分组的同时，从下一跳索引构建数据分组的新层头。在从路由器传送之前，将新层标头耦合到数据包。

33. 发明授权

US07082134B1 Redirect checking in a network device 有权
标题翻译：重定向检查网络设备
公开(公告)号：US07082134B1
公开(公告)日：2006-07-25
申请号：US10050106
申请日：2002-01-18
申请人： Raymond Marcelino Manese Lim , Dennis C. Ferguson , Jeffrey Glenn Libby
发明人： Raymond Marcelino Manese Lim , Dennis C. Ferguson , Jeffrey Glenn Libby
IPC分类号： H04L12/28
CPC分类号： H04L45/02 , H04L45/745 , H04L49/3009 , H04L49/3072
摘要： A network device for performing redirect checking includes an input device and processing logic. The input device receives a data packet on a first one of a number of interfaces. The data packet includes source and destination addresses. The processing logic assigns an incoming interface to the data packet and generates forwarding information identifying a next hop for the data packet. The processing logic also identifies an outgoing interface based on the next hop and determines whether the incoming interface index is equal to the outgoing interface index. The processing logic also determines whether the data packet originated from a station that is part of the same subnet as the next hop. When both of these conditions are met, the processing logic generates a redirect message.
摘要翻译：用于执行重定向检查的网络设备包括输入设备和处理逻辑。输入设备在多个接口中的第一个接收数据包。数据包包括源地址和目的地址。处理逻辑将输入接口分配给数据包，并产生识别数据包的下一跳的转发信息。处理逻辑还基于下一跳标识出接口，并确定进入接口索引是否等于出接口索引。处理逻辑还确定数据分组是源自与下一跳相同的子网的一部分的站。当满足这两个条件时，处理逻辑生成重定向消息。

34. 发明授权

US07016367B1 Systems and methods for allocating bandwidth for processing of packets 失效
标题翻译：用于分配带宽以处理数据包的系统和方法
公开(公告)号：US07016367B1
公开(公告)日：2006-03-21
申请号：US09751454
申请日：2001-01-02
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： H04L12/54
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。

35. 发明授权

US06493347B2 Memory organization in a switching device 失效
标题翻译：交换设备中的内存组织
公开(公告)号：US06493347B2
公开(公告)日：2002-12-10
申请号：US08901061
申请日：1997-07-24
申请人： Pradeep S. Sindhu , Dennis C. Ferguson , Bjorn O. Liencres , Nalini Agarwal , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Rasoul Mirzazadeh Oskouy , Sreeram Veeragandham
发明人： Pradeep S. Sindhu , Dennis C. Ferguson , Bjorn O. Liencres , Nalini Agarwal , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Rasoul Mirzazadeh Oskouy , Sreeram Veeragandham
IPC分类号： H04L1256
CPC分类号： G06F15/167 , H04L12/5601 , H04L29/06 , H04L45/00 , H04L45/72 , H04L45/7457 , H04L47/6225 , H04L49/103 , H04L49/108 , H04L49/1538 , H04L49/203 , H04L49/25 , H04L49/252 , H04L49/3072 , H04L49/3081 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9042 , H04L49/9047 , H04L49/9057 , H04L69/22 , H04L2012/5652 , H04L2012/5679 , H04L2012/5681 , H04Q11/0478
摘要： A router for switching data packets from a source to a destination in a network in which the router includes a distributed memory. The distributed memory includes two or more memory banks. Each memory bank is used for storing uniform portions of a data packet received from a source and linking information for each data packet to allow for the extraction of the uniform portions of a data packet from distributed locations in memory in proper order after a routing determination has been made by the router.
摘要翻译：用于在路由器包括分布式存储器的网络中切换来自源到目的地的数据分组的路由器。分布式存储器包括两个或多个存储体。每个存储体用于存储从源接收的数据分组的均匀部分和用于每个数据分组的链接信息，以允许在路由确定之后以适当的顺序从存储器中的分布位置提取数据分组的统一部分是由路由器做的

36. 发明授权

US08611216B2 Maintaining packet order using hash-based linked-list queues 有权
标题翻译：使用基于哈希的链表列表维护数据包顺序
公开(公告)号：US08611216B2
公开(公告)日：2013-12-17
申请号：US13250765
申请日：2011-09-30
申请人： Dennis C. Ferguson , Philippe Lacroute , Chi-Chung Chen , Gerald Cheung , Tatao Chuang , Pankaj Patel , Viswesh Ananthakrishnan
发明人： Dennis C. Ferguson , Philippe Lacroute , Chi-Chung Chen , Gerald Cheung , Tatao Chuang , Pankaj Patel , Viswesh Ananthakrishnan
IPC分类号： H04J1/16 , H04L12/66 , H04L12/28
CPC分类号： H04L49/90 , H04L47/50 , H04L47/6225 , H04L49/3036 , H04L49/351 , H04L49/901 , H04L49/9094
摘要： Ordering logic ensures that data items being processed by a number of parallel processing units are unloaded from the processing units in the original per-flow order that the data items were loaded into the parallel processing units. The ordering logic includes a pointer memory, a tail vector, and a head vector. Through these three elements, the ordering logic keeps track of a number of “virtual queues” corresponding to the data flows. A round robin arbiter unloads data items from the processing units only when a data item is at the head of its virtual queue.
摘要翻译：订购逻辑确保由多个并行处理单元处理的数据项以原始每流顺序从处理单元卸载，数据项被加载到并行处理单元中。排序逻辑包括指针存储器，尾部矢量和头部矢量。通过这三个元素，排序逻辑跟踪与数据流相对应的多个“虚拟队列”。循环仲裁器只有在数据项位于其虚拟队列的头部时才从处理单元中卸载数据项。

37. 发明授权

US08503304B2 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：US08503304B2
公开(公告)日：2013-08-06
申请号：US13539164
申请日：2012-06-29
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各个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。

38. 发明授权

US08477784B2 Memory organization in a switching device 有权
公开(公告)号：US08477784B2
公开(公告)日：2013-07-02
申请号：US12986745
申请日：2011-01-07
申请人： Pradeep S. Sindhu , Dennis C. Ferguson , Bjorn O. Liencres , Nalini Agarwal , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Rasoul Mirzazadeh Oskouy , Sreeram Veeragandham
发明人： Pradeep S. Sindhu , Dennis C. Ferguson , Bjorn O. Liencres , Nalini Agarwal , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Rasoul Mirzazadeh Oskouy , Sreeram Veeragandham
IPC分类号： H04L12/56
CPC分类号： G06F15/167 , H04L12/5601 , H04L29/06 , H04L45/00 , H04L45/72 , H04L45/7457 , H04L47/6225 , H04L49/103 , H04L49/108 , H04L49/1538 , H04L49/203 , H04L49/25 , H04L49/252 , H04L49/3072 , H04L49/3081 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9042 , H04L49/9047 , H04L49/9057 , H04L69/22 , H04L2012/5652 , H04L2012/5679 , H04L2012/5681 , H04Q11/0478
摘要： A router for switching data packets from a source to a destination in a network in which the router includes a distributed memory. The distributed memory includes two or more memory banks. Each memory bank is used for storing uniform portions of a data packet received from a source and linking information for each data packet to allow for the extraction of the uniform portions of a data packet from distributed locations in memory in proper order after a routing determination has been made by the router.

39. 发明申请

US20120219001A1 SEPARATION OF DATA AND CONTROL IN A SWITCHING DEVICE 失效
标题翻译：切换设备中数据和控制的分离
公开(公告)号：US20120219001A1
公开(公告)日：2012-08-30
申请号：US13465566
申请日：2012-05-07
申请人： Pradeep S. SINDHU , Kireeti Kompella , Dennis C. Ferguson , Bjorn O. Liencres , Nalini Agarwal , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Rasoul Mirzazadeh Oskouy , Sreeram Veeragandham
发明人： Pradeep S. SINDHU , Kireeti Kompella , Dennis C. Ferguson , Bjorn O. Liencres , Nalini Agarwal , Hann-Hwan Ju , Raymond Marcelino Manese Lim , Rasoul Mirzazadeh Oskouy , Sreeram Veeragandham
IPC分类号： H04L12/56
CPC分类号： G06F15/167 , H04L12/5601 , H04L29/06 , H04L45/00 , H04L45/72 , H04L45/7457 , H04L47/6225 , H04L49/103 , H04L49/108 , H04L49/1538 , H04L49/203 , H04L49/25 , H04L49/252 , H04L49/3072 , H04L49/3081 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9042 , H04L49/9047 , H04L49/9057 , H04L69/22 , H04L2012/5652 , H04L2012/5679 , H04L2012/5681 , H04Q11/0478
摘要： A method and apparatus for switching a data packet between a source and destination in a network. The data packet includes a header portion and a data portion. The header portion includes routing information for the data packet. The method includes defining a data path in the router comprising a path through the router along which the data portion of the data packet travels and defining a control path comprising a path through the router along which routing information from the header portion travels. The method includes separating the data path and control path in the router such that the routing information can be separated from the data portion allowing for the separate processing of each in the router. The data portion can be stored in a global memory while routing decisions are made on the routing information in the control path.
摘要翻译：一种用于在网络中的源和目的地之间切换数据分组的方法和装置。数据分组包括报头部分和数据部分。报头部分包括用于数据分组的路由信息。该方法包括在路由器中定义数据路径，其包括通过路由器的路径，数据分组的数据部分沿着路径行进，并且定义包括通过路由器的路径的控制路径，路由器沿着路径信息从该路径行进。该方法包括分离路由器中的数据路径和控制路径，使得路由信息可以与数据部分分离，允许路由器中的每一个的单独处理。数据部分可以存储在全局存储器中，同时对控制路径中的路由信息作出路由决定。

40. 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。

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