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41. 发明授权

US07474672B2 Frame alteration logic for network processors 失效
标题翻译：网络处理器的帧更改逻辑
公开(公告)号：US07474672B2
公开(公告)日：2009-01-06
申请号：US10364069
申请日：2003-02-11
申请人： Peter I. A. Barri , Claude Basso , Jean L. Calvignac , Brahmanand K. Gorti , Joseph F. Logan , Natarajan Vaidhyanathan , Johan G. A. Verkinderen
发明人： Peter I. A. Barri , Claude Basso , Jean L. Calvignac , Brahmanand K. Gorti , Joseph F. Logan , Natarajan Vaidhyanathan , Johan G. A. Verkinderen
IPC分类号： H04J3/22
CPC分类号： H04L49/25 , H04L49/3009 , H04L49/40
摘要： Packet switching node in a communication system includes apparatus for receiving incoming information packets or frames which contain header portions with formatting control blocks. Information in the frame's header contains frame alteration commands for modifying the information in the frame. The modifications include adding new information, deleting information, and overlaying information. Decoders and control devices in an alteration engine interpret the commands and apply the modifications to the frame data. Common and standard data patterns are stored for insertion or overlaying to conserve data packet space.
摘要翻译：通信系统中的分组交换节点包括用于接收具有格式化控制块的包含报头部分的输入信息分组或帧的装置。帧头中的信息包含用于修改帧中的信息的帧改变命令。修改包括添加新信息，删除信息和叠加信息。变更引擎中的解码器和控制装置解释命令并对帧数据应用修改。存储通用和标准数据模式用于插入或覆盖以节省数据分组空间。

42. 发明申请

US20080273539A1 SYSTEM FOR PERFORMING A PACKET HEADER LOOKUP 审中-公开
标题翻译：用于执行包装头的系统
公开(公告)号：US20080273539A1
公开(公告)日：2008-11-06
申请号：US12165623
申请日：2008-06-30
申请人： Claude BASSO , Jean Louis Calvignac , Chih-jen Chang , Philippe Damon , Ronald Edward Fuhs , Natarajan Vaidhyanathan , Fabrice Jean Verplanken , Colin Beaton Verrilli , Scott Michael Willenborg
发明人： Claude BASSO , Jean Louis Calvignac , Chih-jen Chang , Philippe Damon , Ronald Edward Fuhs , Natarajan Vaidhyanathan , Fabrice Jean Verplanken , Colin Beaton Verrilli , Scott Michael Willenborg
IPC分类号： H04L12/28
CPC分类号： H04L49/3009 , H04L45/742 , H04L49/25
摘要： A system for performing a lookup for a packet in a computer network are disclosed. The packet includes a header. The system includes a parser, a lookup engine coupled with the parser, and a processor coupled with the lookup engine. The parser parses the packet for the header prior to receipt of the packet being completed. The lookup engine performs a lookup for the header and returns a resultant. In one aspect, the lookup includes performing a local lookup of a cache that includes resultants of previous lookups. The processor processes the resultant.
摘要翻译：公开了一种用于在计算机网络中执行查找分组的系统。分组包括报头。该系统包括解析器，与解析器耦合的查找引擎，以及与查找引擎耦合的处理器。解析器在接收到完成的数据包之前解析报头的数据包。查找引擎对标题执行查找并返回结果。在一个方面，查找包括执行包括先前查找的结果的高速缓存的本地查找。处理器处理结果。

43. 发明申请

US20080016243A1 Database Management System and Method of Using it to Transmit Packets 有权
标题翻译：数据库管理系统及其使用传输数据包的方法
公开(公告)号：US20080016243A1
公开(公告)日：2008-01-17
申请号：US11776487
申请日：2007-07-11
申请人： Claude Basso , Natarajan Vaidhyanathan , Colin Verrilli
发明人： Claude Basso , Natarajan Vaidhyanathan , Colin Verrilli
IPC分类号： G06F15/173
CPC分类号： H04L45/54 , H04L12/56
摘要： A forwarding table, in a network device such as a router, used to forward packets in a communications network includes indicia whose state determine whether information contained in the forwarding table or information contained in the header portion of a packet is to be used to forward the packet to the next hop (i.e. next point in the route).
摘要翻译：用于在通信网络中转发分组的诸如路由器的网络设备中的转发表包括其状态确定包含在转发表中的信息或包含在分组的报头部分中的信息将被用于转发分组到下一跳（即路由中的下一个点）。

44. 发明授权

US07260096B2 Method and router for forwarding internet data packets 有权
标题翻译：用于转发互联网数据包的方法和路由器
公开(公告)号：US07260096B2
公开(公告)日：2007-08-21
申请号：US10191657
申请日：2002-07-09
申请人： Claude Basso , Max Robert Povse , Natarajan Vaidhyanathan , Colin Beaton Verrilli
发明人： Claude Basso , Max Robert Povse , Natarajan Vaidhyanathan , Colin Beaton Verrilli
IPC分类号： H04L12/28
CPC分类号： H04L45/60 , H04L45/00 , H04L45/54
摘要： The Internet data defining destinations accessible by a router are partitioned into a portion containing the address search information and a portion containing forwarding option data. The address search information is stored in fast memory in a tree search format and the set of possible next destinations are stored as forwarding option data in slower memory at addresses derived algorithmically from the tree search address information. Internet data packets are received and data therein is compared to determine the best match address in the fast memory to the set of possible best next destinations. The multiple accesses necessary to determine the best match address are confined to high speed memory. An algorithm receives option data from an Internet packet and option threshold data from the best match address of the high speed memory and determines which address of the slower memory has the desired forwarding data using one access.
摘要翻译：定义由路由器可访问的目的地的因特网数据被划分为包含地址搜索信息的部分和包含转发选项数据的部分。地址搜索信息以树形搜索格式存储在快速存储器中，并且将可能的下一个目的地集合作为转发选项数据存储在来自树搜索地址信息的算法导出的地址的较慢存储器中。接收互联网数据分组并对其中的数据进行比较，以将快速存储器中的最佳匹配地址确定为可能的最佳下一个目的地的集合。确定最佳匹配地址所需的多路访问仅限于高速存储器。算法从互联网数据包接收选项数据，并从高速存储器的最佳匹配地址接收选项阈值数据，并使用一个访问确定较慢内存的哪个地址具有所需的转发数据。

45. 发明申请

US20060221953A1 Method and apparatus for blind checksum and correction for network transmissions 审中-公开
标题翻译：用于网络传输的盲校验和校正的方法和装置
公开(公告)号：US20060221953A1
公开(公告)日：2006-10-05
申请号：US11097055
申请日：2005-04-01
申请人： Claude Basso , Jean Calvignac , Chih-Jen Chang , Philippe Damon , Ronald Fuhs , Natarajan Vaidhyanathan , Fabrice Verplanken , Colin Verrilli , Scott Willenborg
发明人： Claude Basso , Jean Calvignac , Chih-Jen Chang , Philippe Damon , Ronald Fuhs , Natarajan Vaidhyanathan , Fabrice Verplanken , Colin Verrilli , Scott Willenborg
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L69/16 , H04L1/0041 , H04L1/0061 , H04L1/0072 , H04L69/161
摘要： Method and apparatus for providing a checksum in a network transmission. In one aspect of the invention, a checksum for a packet to be transmitted on a network is determined by retrieving packet information from a storage device, the packet information to be included in the packet to be transmitted. A blind checksum value is determined based on the retrieved packet information, and the blind checksum value is adjusted to a protocol checksum based on descriptor information describing the structure of the packet. The protocol checksum is inserted in the packet before the packet is transmitted.
摘要翻译：用于在网络传输中提供校验和的方法和装置。在本发明的一个方面，通过从存储设备检索分组信息来确定要在网络上发送的分组的校验和，所述分组信息将包括在要发送的分组中。基于检索的分组信息确定盲校验和值，并且基于描述分组的结构的描述符信息将盲校验和值调整为协议校验和。在分组发送之前，协议校验和被插入到分组中。

46. 发明授权

US06973503B2 Preventing at least in part control processors from being overloaded 失效
标题翻译：防止至少部分控制处理器过载
公开(公告)号：US06973503B2
公开(公告)日：2005-12-06
申请号：US10155675
申请日：2002-05-23
申请人： Claude Basso , Max Robert Povse , Natarajan Vaidhyanathan , Colin Beaton Verrilli
发明人： Claude Basso , Max Robert Povse , Natarajan Vaidhyanathan , Colin Beaton Verrilli
IPC分类号： H04L12/24 , G06F13/00
CPC分类号： H04L41/0896
摘要： A method, system and computer program product for preventing at least in part overloading of a control processor. A network device may comprise at least one network processor and at least one control processor. The control processor may be configured to process slow path packets that are redirected from a network processor to the control processor. The control processor may configure control blocks to determine if the bandwidth for the control processor will be exceeded by the network processor transferring another slow path packet to the control processor. If the control block determines that transmitting the slow path packet would exceed the processing capacity of the control processor, then the control block may generate a result indicating for the network processor to discard the received packet. By discarding packets that exceed the processing capacity of the control processor, overloading of the control processor may at least in part be prevented.
摘要翻译：一种用于至少部分地防止控制处理器过载的方法，系统和计算机程序产品。网络设备可以包括至少一个网络处理器和至少一个控制处理器。控制处理器可以被配置为处理从网络处理器重定向到控制处理器的慢路径分组。控制处理器可以配置控制块，以确定网络处理器是否将控制处理器的带宽传输到控制处理器的另一慢路径分组。如果控制块确定发送慢路径分组将超过控制处理器的处理能力，则控制块可以生成指示网络处理器丢弃所接收分组的结果。通过丢弃超过控制处理器的处理能力的分组，可以至少部分地防止控制处理器的过载。

47. 发明授权

US06658481B1 Router uses a single hierarchy independent routing table that includes a flag to look-up a series of next hop routers for routing packets 有权
标题翻译：路由器使用单独的层次结构独立路由表，其中包含一个标志来查找一系列下一跳路由器用于路由数据包
公开(公告)号：US06658481B1
公开(公告)日：2003-12-02
申请号：US09544312
申请日：2000-04-06
申请人： Claude Basso , Anthony Matteo Gallo , Natarajan Vaidhyanathan
发明人： Claude Basso , Anthony Matteo Gallo , Natarajan Vaidhyanathan
IPC分类号： G06F15173
CPC分类号： H04L45/52 , H04L45/00 , H04L45/20 , H04L45/54
摘要： In a network processor-based device, there is provided a single routing table for network routers and an efficient routing algorithm implemented by the routing device. The routing table includes packet forwarding information including a subnet address associated with a destination address location, an ISO layer three (3) network protocol address, e.g., IP address, of a router interface that can route packets to the subnet address, and an identifier indicating whether that router is an exit BGP router that may or may not be directly attached to the packet forwarding router. A table look-up mechanism is provided to determine next hop information and determine associated BGP status of the next hop. At such time it is determined that a router is not a BGP router (i.e., is directly attached to the forwarding router), the packet will be transmitted to that router.
摘要翻译：在基于网络处理器的设备中，提供了用于网络路由器的单个路由表和由路由设备实现的有效路由算法。路由表包括分组转发信息，包括与目的地地址相关联的子网地址，可以将分组路由到子网地址的路由器接口的ISO层三（3）网络协议地址，例如IP地址，以及标识符指示该路由器是否可以或可能不直接附加到分组转发路由器的退出BGP路由器。提供表查找机制以确定下一跳信息并确定下一跳的相关BGP状态。在此时确定路由器不是BGP路由器（即，直接连接到转发路由器），该分组将被发送到该路由器。

48. 发明授权

US09225644B2 Using special-case hardware units for facilitating access control lists on a networking element 有权
标题翻译：使用特殊情况的硬件单元来促进网络元件上的访问控制列表
公开(公告)号：US09225644B2
公开(公告)日：2015-12-29
申请号：US13616201
申请日：2012-09-14
申请人： Claude Basso , Natarajan Vaidhyanathan , Colin B. Verrilli
发明人： Claude Basso , Natarajan Vaidhyanathan , Colin B. Verrilli
IPC分类号： G06F15/173 , H04L12/743 , G06F15/167 , G06F17/30 , H04L29/06 , H04L12/28 , G06F13/00
CPC分类号： H04L45/7457 , G06F15/167 , G06F17/30982 , H04L63/101
摘要： Access control lists (ACLs) include one or more rules that each define a condition and one or more actions to be performed if the condition is satisfied. In one embodiment, the conditions are stored on a ternary content-addressable memory (TCAM), which receives a portion of network traffic, such as a frame header, and compares different portions of the header to entries in the TCAM. If the frame header satisfies the condition, the TCAM reports the match to other elements in the ACL. For certain conditions, the TCAM may divide the condition into a plurality of sub-conditions which are each stored in a row of the TCAM. To efficiently use the limited space in TCAM, the networking element may include one or more comparator units which check for special-case conditions. The comparator units may be used in lieu of the TCAM to determine whether the condition is satisfied.
摘要翻译：访问控制列表（ACL）包括一个或多个规则，每个规则定义条件和满足条件时要执行的一个或多个操作。在一个实施例中，条件存储在三元可内容寻址存储器（TCAM）上，该内容可寻址存储器（TCAM）接收网络业务的一部分，例如帧头，并且将头部的不同部分与TCAM中的条目进行比较。如果帧头满足条件，则TCAM报告与ACL中其他元素的匹配。对于某些条件，TCAM可以将条件划分为多个子条件，这些子条件各自存储在一行TCAM中。为了有效地使用TCAM中的有限空间，网络元件可以包括一个或多个比较器单元，其检查特殊情况。可以使用比较器单元代替TCAM来确定条件是否满足。

49. 发明授权

US09215125B2 Techniques for connecting an external network coprocessor to a network processor packet parser 有权
标题翻译：将外部网络协处理器连接到网络处理器数据包解析器的技术
公开(公告)号：US09215125B2
公开(公告)日：2015-12-15
申请号：US13884664
申请日：2011-12-19
申请人： Claude Basso , Jean L. Calvignac , Chih-Jen Chang , Damon Philippe , Natarajan Vaidhyanathan , Colin B. Verrilli , Fabrice Jean Verplanken
发明人： Claude Basso , Jean L. Calvignac , Chih-Jen Chang , Damon Philippe , Natarajan Vaidhyanathan , Colin B. Verrilli , Fabrice Jean Verplanken
IPC分类号： H04L29/06 , G06F9/38 , G06F15/163 , G06F9/54
CPC分类号： H04L29/0653 , G06F9/3877 , G06F9/544 , G06F13/385 , G06F15/163 , H04L69/22
摘要： A network processor includes first communication protocol ports that each support ‘M’ minimum size packet data path traffic on ‘N’ lanes at ‘S’ Gigabits per second (Gbps) and traffic with different communication protocol units on ‘n’ additional lanes at ‘s’ Gbps. The first communication protocol ports support access to an external coprocessor using parsing logic located in each of the first communication protocol ports. The parsing logic, during a parsing period, is configured to send a request to the external coprocessor at reception of a ‘M’ size packet and to receive a response from the external coprocessor. The parsing logic sends a request maximum ‘m’ size byte word to the external coprocessor on one of the additional lanes and receives a response maximum ‘m’ size byte word from the external coprocessor on the one of the additional lanes while complying with the equation N×S/M=
摘要翻译：网络处理器包括第一通信协议端口，每个端口以“S”千兆位/秒（Gbps）在“N”通道上支持“M”个最小尺寸分组数据路径业务，并且在“n”个附加车道上以不同的通信协议单元的流量“ s Gbps 第一通信协议端口支持使用位于每个第一通信协议端口中的解析逻辑来访问外部协处理器。解析逻辑在解析周期期间被配置为在接收到“M”大小的分组时向外部协处理器发送请求并且从外部协处理器接收响应。解析逻辑在附加通道之一上向外部协处理器发送请求最大“m”字节字，并在附加通道之一上从外部协处理器接收响应最大“m”字节字，同时遵循等式 N×S / M =

50. 发明授权

US08726134B2 Checksum verification accelerator 有权
标题翻译：校验和验证加速器
公开(公告)号：US08726134B2
公开(公告)日：2014-05-13
申请号：US13466940
申请日：2012-05-08
申请人： Francois Abel , Claude Basso , Jean L. Calvignac , Natarajan Vaidhyanathan , Fabrice Jean Verplanken
发明人： Francois Abel , Claude Basso , Jean L. Calvignac , Natarajan Vaidhyanathan , Fabrice Jean Verplanken
IPC分类号： H03M13/00
CPC分类号： H04L1/0079 , H04L1/0061 , H04L1/0072
摘要： Disclosed is a method for validating a data packet by a network processor supporting a first-network protocol and a second network protocol and utilizing shared hardware. The network processor receives a data packet; identifies a network packet protocol for the data packet; and processes the data packet according to the network packet protocol comprising: updating a first register with a first partial packet length specific to the first network protocol; updating a second register with a second partial packet length specific to the second network protocol; and updating a third register with a first checksum computed from fields independent of the network protocol. The method produces a second checksum utilizing a function that combines values from the first register, the second register, and the third register. The method validates the data packet by comparing the data packet checksum to the second checksum.
摘要翻译：公开了一种通过支持第一网络协议和第二网络协议的网络处理器来验证数据分组并利用共享硬件的方法。网络处理器接收数据包; 识别数据包的网络包协议; 并根据网络分组协议对数据分组进行处理，包括：以第一网络协议特有的第一部分分组长度更新第一寄存器; 用第二网络协议特有的第二部分分组长度更新第二寄存器; 以及用独立于网络协议的字段计算的具有第一校验和的更新第三寄存器。该方法利用组合来自第一寄存器，第二寄存器和第三寄存器的值的函数产生第二校验和。该方法通过将数据包校验和与第二校验和进行比较来验证数据包。

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