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1. 发明授权

US08306040B2 Network packet steering via configurable association of processing resources and network interfaces 有权
标题翻译：网络数据包转向通过处理资源和网络接口的可配置关联
公开(公告)号：US08306040B2
公开(公告)日：2012-11-06
申请号：US12477124
申请日：2009-06-02
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/26
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and systems are provided for steering network packets. According to one embodiment a method is provided for steering incoming network packets. Each network packet processing resource of a network routing/switching device is dynamically assigned to one or more network interfaces of the network routing/switching device. Each of the network packet processing resources includes one or more processing elements and a memory. Incoming network packets received by the network interfaces are steered to an appropriate network packet processing resource based on the dynamic assignment.
摘要翻译：提供了用于转向网络数据包的方法和系统。根据一个实施例，提供了一种用于控制传入网络分组的方法。网络路由/交换设备的每个网络分组处理资源被动态分配给网络路由/交换设备的一个或多个网络接口。每个网络分组处理资源包括一个或多个处理元件和存储器。基于动态分配，由网络接口接收的传入网络分组被引导到适当的网络分组处理资源。

2. 发明申请

US20120069850A1 NETWORK PACKET STEERING VIA CONFIGURABLE ASSOCIATION OF PACKET PROCESSING RESOURCES AND NETWORK INTERFACES 有权
标题翻译：分组处理资源和网络接口的可配置协议的网络分组转向
公开(公告)号：US20120069850A1
公开(公告)日：2012-03-22
申请号：US13305804
申请日：2011-11-29
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/56
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and systems are provided for steering network packets. According to one embodiment, a dynamically configurable steering table is stored within a memory of each network interface of a networking routing/switching device. The steering table represents a mapping that logically assigns each of the network interfaces to one of multiple packet processing resources of the network routing/switching device. The steering table has contained therein information indicative of a unique identifier/address of the assigned packet processing resource. Responsive to receiving a packet on a network interface, the network interface performs Layer 1 or Layer 2 steering of the received packet to the assigned packet processing resource by retrieving the information indicative of the unique identifier/address of the assigned packet processing resource from the steering table based on a channel identifier associated with the received packet and the received packet is processed by the assigned packet processing resource.
摘要翻译：提供了用于转向网络数据包的方法和系统。根据一个实施例，可动态配置的转向表被存储在网络路由/交换设备的每个网络接口的存储器内。转向表表示将每个网络接口逻辑地分配给网络路由/交换设备的多个分组处理资源之一的映射。转向表中包含指示所分配的分组处理资源的唯一标识符/地址的信息。响应于在网络接口上接收分组，网络接口通过从转向器中检索指示所分配的分组处理资源的唯一标识符/地址的信息来执行所接收分组的层1或层2转向所分配的分组处理资源基于与接收到的分组相关联的信道标识符和接收到的分组的表由分配的分组处理资源处理。

3. 发明申请

US20070147368A1 NETWORK PACKET STEERING VIA CONFIGURABLE ASSOCIATION OF PROCESSING RESOURCES AND NETMODS OR LINE INTERFACE PORTS 有权
标题翻译：网络分组转向通过可配置的处理资源和网络或线路接口协会
公开(公告)号：US20070147368A1
公开(公告)日：2007-06-28
申请号：US11684614
申请日：2007-03-10
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/56
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and systems are provided for steering network packets. According to one embodiment, a mapping associates a processing resource with a network interface module (netmod) and/or a number of line interface ports included within the netmod. In one embodiment, the mapping is configurable within the processing resource and pushed to the netmod. The netmod uses the mapping to steer network packets to the processing resource when the packets conform to the mapping. The mapping may be additionally used to identify a specific process that is to be performed against the packets once the processing resource receives the steered packets from the netmod.
摘要翻译：提供了用于转向网络数据包的方法和系统。根据一个实施例，映射将处理资源与网络接口模块（netmod）和/或包括在netmod内的多个线路接口端口相关联。在一个实施例中，映射可在处理资源内配置并被推送到netmod。当数据包符合映射时，netmod使用映射来将网络数据包引导到处理资源。一旦处理资源接收到来自netmod的转向分组，该映射可以另外用于标识将针对分组执行的特定进程。

4. 发明授权

US07203192B2 Network packet steering 有权
标题翻译：网络包转向
公开(公告)号：US07203192B2
公开(公告)日：2007-04-10
申请号：US10163261
申请日：2002-06-04
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/54 , H04J3/16 , H04J3/22
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and Systems are provided for steering network packets and bridging media channels to a single processing resource. A mapping associates a processing resource with a network interface module (Netmod) or a number of line interface ports included within the Netmod. In one embodiment, the mapping is configurable within the processing resource and pushed to the Netmod. The Netmod uses the mapping to steer network packets to the processing resource when the packets conform to the mapping. Moreover, the mapping can be used to identify a specific process that is to be performed against the packets once the processing resource receives the steered packets from the Netmod.
摘要翻译：提供方法和系统用于将网络分组和桥接媒体信道转向单个处理资源。映射将处理资源与网络接口模块（Netmod）或Netmod中包含的多个线路接口端口相关联。在一个实施例中，映射可在处理资源内配置并被推送到Netmod。当数据包符合映射时，Netmod会使用映射来将网络数据包引导到处理资源。此外，一旦处理资源从Netmod接收到转向的分组，该映射可用于识别针对分组执行的特定进程。

5. 发明授权

US08638802B2 Network packet steering via configurable association of packet processing resources and network interfaces 有权
标题翻译：网络分组转向通过分组处理资源和网络接口的可配置关联
公开(公告)号：US08638802B2
公开(公告)日：2014-01-28
申请号：US13305804
申请日：2011-11-29
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/26
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and systems are provided for steering network packets. According to one embodiment, a dynamically configurable steering table is stored within a memory of each network interface of a networking routing/switching device. The steering table represents a mapping that logically assigns each of the network interfaces to one of multiple packet processing resources of the network routing/switching device. The steering table has contained therein information indicative of a unique identifier/address of the assigned packet processing resource. Responsive to receiving a packet on a network interface, the network interface performs Layer 1 or Layer 2 steering of the received packet to the assigned packet processing resource by retrieving the information indicative of the unique identifier/address of the assigned packet processing resource from the steering table based on a channel identifier associated with the received packet and the received packet is processed by the assigned packet processing resource.
摘要翻译：提供了用于转向网络数据包的方法和系统。根据一个实施例，可动态配置的转向表被存储在网络路由/交换设备的每个网络接口的存储器内。转向表表示将每个网络接口逻辑地分配给网络路由/交换设备的多个分组处理资源之一的映射。转向表中包含指示所分配的分组处理资源的唯一标识符/地址的信息。响应于在网络接口上接收分组，网络接口通过从转向器中检索指示所分配的分组处理资源的唯一标识符/地址的信息来执行所接收分组的层1或层2转向所分配的分组处理资源基于与接收到的分组相关联的信道标识符和接收到的分组的表由分配的分组处理资源处理。

6. 发明授权

US08068503B2 Network packet steering via configurable association of processing resources and netmods or line interface ports 有权
标题翻译：通过处理资源和netmods或线路接口端口的可配置关联来进行网络分组转向
公开(公告)号：US08068503B2
公开(公告)日：2011-11-29
申请号：US11684614
申请日：2007-03-10
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/28
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and systems are provided for steering network packets. According to one embodiment, a mapping associates a processing resource with a network interface module (netmod) and/or a number of line interface ports included within the netmod. In one embodiment, the mapping is configurable within the processing resource and pushed to the netmod. The netmod uses the mapping to steer network packets to the processing resource when the packets conform to the mapping. The mapping may be additionally used to identify a specific process that is to be performed against the packets once the processing resource receives the steered packets from the netmod.
摘要翻译：提供了用于转向网络数据包的方法和系统。根据一个实施例，映射将处理资源与网络接口模块（netmod）和/或包括在netmod内的多个线路接口端口相关联。在一个实施例中，映射可在处理资源内配置并被推送到netmod。当数据包符合映射时，netmod使用映射来将网络数据包引导到处理资源。一旦处理资源接收到来自netmod的转向分组，该映射可以另外用于标识将针对分组执行的特定进程。

7. 发明申请

US20090238181A1 NETWORK PACKET STEERING VIA CONFIGURABLE ASSOCIATION OF PROCESSING RESOURCES AND NETWORK INTERFACES 有权
标题翻译：通过可配置的处理资源和网络接口协会的网络包转向
公开(公告)号：US20090238181A1
公开(公告)日：2009-09-24
申请号：US12477124
申请日：2009-06-02
申请人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
发明人： Sachin Desai , Tim Millet , Zahid Hussain , Paul Kim , Louise Yeung , Ken Yeung
IPC分类号： H04L12/56
CPC分类号： H04L47/22 , H04L12/4625 , H04L47/10 , H04L47/2441 , H04L47/2491 , H04L49/254 , H04L49/30 , H04L49/65
摘要： Methods and systems are provided for steering network packets. According to one embodiment a method is provided for steering incoming network packets. Each network packet processing resource of a network routing/switching device is dynamically assigned to one or more network interfaces of the network routing/switching device. Each of the network packet processing resources includes one or more processing elements and a memory. Incoming network packets received by the network interfaces are steered to an appropriate network packet processing resource based on the dynamic assignment.
摘要翻译：提供了用于转向网络数据包的方法和系统。根据一个实施例，提供了一种用于控制传入网络分组的方法。网络路由/交换设备的每个网络分组处理资源被动态分配给网络路由/交换设备的一个或多个网络接口。每个网络分组处理资源包括一个或多个处理元件和存储器。基于动态分配，由网络接口接收的传入网络分组被引导到适当的网络分组处理资源。

8. 发明授权

US6128666A Distributed VLAN mechanism for packet field replacement in a multi-layered switched network element using a control field/signal for indicating modification of a packet with a database search engine 失效
标题翻译：使用控制字段/信号指示数据库搜索引擎修改数据包的多层交换网元中的分组字段替换的分布式VLAN机制
公开(公告)号：US6128666A
公开(公告)日：2000-10-03
申请号：US885000
申请日：1997-06-30
申请人： Shimon Muller , Louise Yeung , Ariel Hendel
发明人： Shimon Muller , Louise Yeung , Ariel Hendel
IPC分类号： H04L12/46 , H04L12/56 , H04L29/06 , H04J3/24 , G06F13/00 , H04J15/00
CPC分类号： H04L12/46 , H04L12/4645 , H04L12/467 , H04L49/103 , H04L69/22 , H04L49/3009 , H04L49/3036 , H04L49/354 , H04L49/602
摘要： A system and method for updating packet headers using hardware that maintains the high performance of the network element. In one embodiment, the system includes an input port process (IPP) that buffers the input packet received and forwards header information to the search engine. The search engine searches a database maintained on the switch element to determine the type of the packet. In one embodiment, the type may indicate whether the packet can be routed in hardware. In another embodiment, the type may indicate whether the packet supports VLANs. The search engine sends the packet type information to the IPP along with the destination address (DA) to be updated if the packet is to be routed, or a VLAN tag if the packet has been identified to be forwarded to a particular VLAN. The IPP, during transmission of the packet to a packet memory selectively replaces the corresponding fields, e.g., DA field or VLAN tag field; the modified packet is stored in the packet memory. Associated with the packet memory are control fields containing control field information conveyed to the packet memory by the IPP. An output port process (OPP) reads the modified input packet and the control field information and selectively performs additional modifications to the modified input packet and issue control signals to the output interface (i.e., MAC). The MAC, based upon the control signals, replaces the source address field with the address of the MAC and generates a CRC that is appended to the end of the packet.
摘要翻译：一种用于使用维持网络元件的高性能的硬件来更新分组报头的系统和方法。在一个实施例中，该系统包括缓冲所接收的输入分组的输入端口处理（IPP），并将头部信息转发到搜索引擎。搜索引擎搜索在switch元素上维护的数据库以确定数据包的类型。在一个实施例中，该类型可以指示分组是否可以在硬件中路由。在另一个实施例中，该类型可以指示分组是否支持VLAN。搜索引擎将分组类型信息与要进行路由的分组要更新的目标地址（DA）一起发送到IPP，如果分组已被标识为转发到特定VLAN，则将其发送到VLAN标签。在将分组传输到分组存储器期间，IPP选择性地替换相应的字段，例如DA字段或VLAN标签字段; 修改的分组被存储在分组存储器中。与分组存储器相关联的是包含由IPP传送到分组存储器的控制字段信息的控制字段。输出端口处理（OPP）读取修改的输入分组和控制字段信息，并且选择性地对修改的输入分组执行附加修改，并向输出接口（即MAC）发出控制信号。 MAC基于控制信号，将源地址字段替换为MAC的地址，并生成附加到数据包末尾的CRC。

9. 发明授权

US5920566A Routing in a multi-layer distributed network element 失效
标题翻译：在多层分布式网元中进行路由选择
公开(公告)号：US5920566A
公开(公告)日：1999-07-06
申请号：US885114
申请日：1997-06-30
申请人： Ariel Hendel , Shimon Muller , William T. Zaumen , Louise Yeung
发明人： Ariel Hendel , Shimon Muller , William T. Zaumen , Louise Yeung
IPC分类号： H04L12/18 , H04L12/46 , H04L12/56 , H04J3/02
CPC分类号： H04L12/18 , H04L12/4645 , H04L45/00 , H04L45/60 , H04L49/602
摘要： A multi-layer distributed network element for relaying packets according to known routing protocols. A distributed architecture of multiple subsystems delivers routing at wire-speed performance across subnetworks. Each subsystem includes a forwarding memory and an associated memory and is configured to identify unicast and multicast packets for routing purposes, modify the packets in hardware, including replace VLAN information, and forward the packets to the next hop. The routing decisions are made in the inbound subsystem, and packets are forwarded, if necessary given the network topology, through a separate outbound subsystem.
摘要翻译：一种用于根据已知路由协议中继分组的多层分布式网元。多个子系统的分布式架构通过子网提供线速性能的路由。每个子系统包括转发存储器和相关联的存储器，并且被配置为识别用于路由目的的单播和多播分组，在硬件中修改分组，包括替换VLAN信息，并将分组转发到下一跳。在入站子系统中进行路由决策，如果需要，通过单独的出站子系统转发数据包。

10. 发明授权

US5909686A Hardware-assisted central processing unit access to a forwarding database 失效
标题翻译：硬件辅助中央处理单元访问转发数据库
公开(公告)号：US5909686A
公开(公告)日：1999-06-01
申请号：US885047
申请日：1997-06-30
申请人： Shimon Muller , Ariel Hendel , Louise Yeung , Leo Hejza , Shree Murthy
发明人： Shimon Muller , Ariel Hendel , Louise Yeung , Leo Hejza , Shree Murthy
IPC分类号： G06F17/30 , H04L12/56
CPC分类号： H04L49/3009 , G06F17/30557 , H04L49/254 , Y10S707/99931 , Y10S707/99945 , Y10S707/99948
摘要： A method and apparatus for providing hardware-assisted CPU access to a forwarding database is described. According to one aspect of the present invention, a switch fabric provides access to a forwarding database on behalf of a processor. The switch fabric includes a memory access interface configured to arbitrate access to a forwarding database memory. The switch fabric also includes a search engine coupled to the memory access interface and to multiple input ports. The search engine is configured to schedule and perform accesses to the forwarding database memory and to transfer forwarding decisions retrieved therefrom to the input ports. The switch fabric further includes command execution logic that is configured to interface with the processor for performing forwarding database accesses requested by the processor. According to another aspect of the invention one or more commands are provided to implement the following functions: (1) learning a supplied address; (2) reading associated data corresponding to a supplied search key; (3) aging forwarding database entries; (4) invalidating entries; (5) accessing mask data, such as mask data that may be stored in a mask per bit (MPB) content addressable memory (CAM), corresponding to a particular search key; (6) replacing forwarding database entries; and (7) accessing entries in the forwarding database.
摘要翻译：描述了一种用于向转发数据库提供硬件辅助CPU访问的方法和装置。根据本发明的一个方面，交换结构代表处理器提供对转发数据库的访问。交换结构包括被配置为仲裁对转发数据库存储器的访问的存储器访问接口。交换结构还包括耦合到存储器访问接口和多个输入端口的搜索引擎。搜索引擎被配置为调度和执行对转发数据库存储器的访问，并将从其检索的转发决定传送到输入端口。交换结构还包括命令执行逻辑，其被配置为与处理器接口以执行由处理器请求的转发数据库访问。根据本发明的另一方面，提供一个或多个命令以实现以下功能：（1）学习所提供的地址; （2）读取与提供的搜索关键字对应的关联数据; （3）老化转发数据库条目; （4）使条目无效; （5）访问对应于特定搜索关键字的掩码数据，例如可能存储在每位掩码（MPB）内容可寻址存储器（CAM））中的掩码数据; （6）替换转发数据库条目; 和（7）访问转发数据库中的条目。

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