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81. 发明申请

US20060248375A1 Packet processing switch and methods of operation thereof 审中-公开
标题翻译：分组处理开关及其操作方法
公开(公告)号：US20060248375A1
公开(公告)日：2006-11-02
申请号：US11394886
申请日：2006-03-31
申请人： Bertan Tezcan , William Beane , Scott Darnell , A. David MacAdam
发明人： Bertan Tezcan , William Beane , Scott Darnell , A. David MacAdam
IPC分类号： G06F11/00
CPC分类号： H04L49/30 , H04L45/52 , H04L47/70 , H04L49/10 , H04L49/109 , H04L49/1546 , H04L49/251 , H04L49/254 , H04L49/3018 , H04L49/3027 , H04L49/3063 , H04L49/35
摘要： A packet processing integrated circuit chip includes a plurality of input ports configured to receive packets from respective external sources and a plurality of output ports configured to transmit packets to respective external recipients. The chip further includes a packet processor configured to process the received packets to generate new packets with new payloads according to selected ones of a plurality of packet processing scenarios based on destination addresses in the received packets. The plurality of packet processing scenarios may include individual packet processing scenarios and group packet processing scenarios that invoke parallel processing of a packet by selected ones of the individual packet processing scenarios. The chip may further include a packet switching fabric configured to route selected packets from the input ports to selected ones of the output ports without payload modification.
摘要翻译：分组处理集成电路芯片包括被配置为从相应的外部源接收分组的多个输入端口和被配置为向相应的外部接收者发送分组的多个输出端口。该芯片还包括分组处理器，其被配置为根据接收到的分组中的目的地地址，根据多个分组处理场景中的选定的分组处理方案来处理接收到的分组以产生具有新有效载荷的新分组。多个分组处理场景可以包括单独的分组处理场景和组分组处理场景，其通过所选择的各个分组处理场景调用分组的并行处理。芯片还可以包括分组交换结构，其被配置为将选择的分组从输入端口路由到选择的输出端口，而无需净荷修改。

82. 发明授权

US07106736B2 Gigabit switch supporting multiple stacking configurations 失效
公开(公告)号：US07106736B2
公开(公告)日：2006-09-12
申请号：US09877040
申请日：2001-06-11
申请人： Mohan Kalkunte
发明人： Mohan Kalkunte
IPC分类号： H04L12/56
CPC分类号： H04L47/2458 , H04L12/462 , H04L45/00 , H04L45/16 , H04L45/245 , H04L45/52 , H04L45/742 , H04L47/10 , H04L47/266 , H04L47/29 , H04L47/32 , H04L49/102 , H04L49/109 , H04L49/15 , H04L49/3009 , H04L49/3018 , H04L49/3036 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/506 , H04L49/508 , H04L49/602 , H04L69/22 , Y02D50/30
摘要： A method of handling data packets in a series of network switches is disclosed. An incoming data packet is received at a data port of a first lower capacity switch of the series of network switches and a stack tag is resolved from a header of the incoming data packet. The incoming data packet is forwarded to a first higher capacity switch, on a first stacked connection operating at a first data rate, based on the stack tag. A destination address of said incoming data packet is resolved by the first higher capacity switch and the header of the incoming packet is modified. The incoming data packet is forwarded to a second higher capacity switch, on a second stacked connection operating at a second data rate, based on the resolved destination address, where the header of the incoming data packet is modified and the incoming data packet is forwarded to a second lower capacity switch on a third stacked connection operating at the first data rate. Lastly, an egress port of the second lower capacity switch is determined based on the stack tag and the incoming data packet is forwarded to the egress port. A network switch configured perform the above method of handling data packets is also disclosed.

83. 发明授权

US07050430B2 Gigabit switch with fast filtering processor 有权
公开(公告)号：US07050430B2
公开(公告)日：2006-05-23
申请号：US09877011
申请日：2001-06-11
申请人： Mohan Kalkunte , Shekhar Ambe , Srinivas Sampath
发明人： Mohan Kalkunte , Shekhar Ambe , Srinivas Sampath
IPC分类号： H04L12/28
CPC分类号： H04L47/2458 , H04L12/462 , H04L45/00 , H04L45/16 , H04L45/245 , H04L45/52 , H04L45/742 , H04L47/10 , H04L47/266 , H04L47/29 , H04L47/32 , H04L49/102 , H04L49/109 , H04L49/15 , H04L49/3009 , H04L49/3018 , H04L49/3036 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/506 , H04L49/508 , H04L49/602 , H04L69/22 , Y02D50/30
摘要： A network switch for network communications includes at least one data port interface supporting a plurality of data ports transmitting and receiving data. A CPU interface is configured to communicate with a CPU, and an internal memory communicates with the at least one data port interface. A memory management unit is provided for communicating data from at least one data port interface and the memory. A communication channel is provided, for communicating data and messaging information between the at least one data port interface, the memory, and the memory management unit. The configuration of the network switch also includes a fast filtering process, with the fast filtering processor filtering packets coming into the at least one data port interface. Selective filter action is taken based upon a filtering result.

84. 发明申请

US20060092940A1 Softrouter protocol disaggregation 有权
公开(公告)号：US20060092940A1
公开(公告)日：2006-05-04
申请号：US11147472
申请日：2005-06-08
申请人： Furquan Ansari , Martin Havemann , Tirunell Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Woo
发明人： Furquan Ansari , Martin Havemann , Tirunell Lakshman , Thyagarajan Nandagopal , Ramachandran Ramjee , Thomas Woo
IPC分类号： H04L12/56
CPC分类号： H04L45/64 , H04L45/00 , H04L45/52 , H04L45/60
摘要： A SoftRouter architecture deconstructs routers by separating the control entities of a router from its forwarding components, enabling dynamic binding between them. In the SoftRouter architecture, control plane functions are aggregated and implemented on a few smart servers which control forwarding elements that are multiple network hops away. A dynamic binding protocol performs network-wide control plane failovers. Network stability is improved by aggregating and remotely hosting routing protocols, such as OSPF and BGP. This results in faster convergence, lower protocol messages processed, and fewer route changes following a failure. The SoftRouter architecture includes a few smart control entities that manage a large number of forwarding elements to provide greater support for network-wide control. In the SoftRouter architecture, routing protocols operate remotely at a control element and control one or more forwarding elements by downloading the forwarding tables, etc. into the forwarding elements. Intra-domain routing and inter-domain routing are also included.

85. 发明授权

US07020139B2 Trunking and mirroring across stacked gigabit switches 有权
公开(公告)号：US07020139B2
公开(公告)日：2006-03-28
申请号：US09877069
申请日：2001-06-11
申请人： Mohan Kalkunte , Srinivas Sampath , Shekhar Ambe
发明人： Mohan Kalkunte , Srinivas Sampath , Shekhar Ambe
IPC分类号： H04L12/56
CPC分类号： H04L47/2458 , H04L12/462 , H04L45/00 , H04L45/16 , H04L45/245 , H04L45/52 , H04L45/742 , H04L47/10 , H04L47/266 , H04L47/29 , H04L47/32 , H04L49/102 , H04L49/109 , H04L49/15 , H04L49/3009 , H04L49/3018 , H04L49/3036 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/506 , H04L49/508 , H04L49/602 , H04L69/22 , Y02D50/30
摘要： A method of handling data packets in a network switch is disclosed. The method includes placing incoming packets into an input queue and applying the input data packets to an address resolution logic engine. A lookup is performed to determine whether certain packet fields are stored in a lookup table; and the result of the lookup is also examined to determine if it provides a trunk group ID for a particular data packet of the input data packets. When the lookup provides a trunk group ID, the trunk group ID is used to determine an egress port and the particular data packet is forwarded to the egress port. Alternatively, the packet is discarded, forwarded, or modified based upon the result of the lookup, where the lookup does not provide a trunk group ID. A network switch using the method is also disclosed and methods directed to mirroring of data packets are also disclosed.

86. 发明授权

US06980515B1 Multi-service network switch with quality of access 失效
标题翻译：具有访问质量的多业务网络交换机
公开(公告)号：US06980515B1
公开(公告)日：2005-12-27
申请号：US09511795
申请日：2000-02-23
申请人： Richard Schunk , Desmond Young
发明人： Richard Schunk , Desmond Young
IPC分类号： H04L12/26 , H04L12/56 , H04L29/14
CPC分类号： H04L47/822 , H04L45/00 , H04L45/52 , H04L45/586 , H04L47/2441 , H04L47/70 , H04L47/746 , H04L47/808 , H04L47/821 , H04L49/102 , H04L69/40
摘要： A multi-service network switch allowing tiered access to system resources. Call policy records maintained by the switch designate quality of access (QoA) levels to different types of incoming calls. When a connection is requested, the call's call policy record is retrieved and the call's QoA level is identified. A requested resource is then allocated to the call based on the identified QoA level and current resource usage.
摘要翻译：多业务网络交换机允许分层访问系统资源。由交换机维护的呼叫策略记录将访问质量（QoA）指定给不同类型的来电。当请求连接时，检索呼叫的呼叫策略记录，并且识别呼叫的QoA级别。然后根据所识别的QoA级别和当前资源使用量，将所请求的资源分配给该呼叫。

87. 发明授权

US06973026B1 Resilient chassis-based network switching 有权
标题翻译：灵活的基于机箱的网络交换
公开(公告)号：US06973026B1
公开(公告)日：2005-12-06
申请号：US09608773
申请日：2000-06-30
申请人： Ryszard W. Dyrga , Andrzej K. Matejko
发明人： Ryszard W. Dyrga , Andrzej K. Matejko
IPC分类号： H04L12/56 , H04L12/26
CPC分类号： H04L45/60 , H04L45/00 , H04L45/52 , H04L45/583 , H04L49/552
摘要： A resilient chassis-based network switch includes redundant control units connected to a network interface through an additional logical interface. The network interface includes multiple data communication ports to transmit data to and receive data from a variety of devices connected to the switch through one or more networks. When coupled to the network interface through the logical interface, each control unit may be viewed as an independent logical switch equipped to transmit and receive data through any of communication ports regardless of the operating state of the other control unit(s).
摘要翻译：基于弹性的基于机箱的网络交换机包括通过附加逻辑接口连接到网络接口的冗余控制单元。网络接口包括多个数据通信端口，用于通过一个或多个网络向连接到交换机的各种设备传送数据并从其接收数据。当通过逻辑接口耦合到网络接口时，每个控制单元可以被视为配备成通过任何通信端口发送和接收数据的独立逻辑开关，而不管其他控制单元的操作状态如何。

88. 发明申请

US20050180429A1 Multi-service network switch with independent protocol stack architecture 有权
标题翻译：具有独立协议栈架构的多业务网络交换机
公开(公告)号：US20050180429A1
公开(公告)日：2005-08-18
申请号：US11039028
申请日：2005-01-20
申请人： Charlie Ghahremani , Mano Murthy
发明人： Charlie Ghahremani , Mano Murthy
IPC分类号： H04L12/24 , H04L12/46 , H04L12/56 , H04L29/06 , H04L29/14 , H04Q3/66 , H04L12/28
CPC分类号： H04L49/102 , H04L41/0654 , H04L41/0659 , H04L41/0677 , H04L41/0896 , H04L41/5045 , H04L45/10 , H04L45/122 , H04L45/22 , H04L45/28 , H04L45/30 , H04L45/302 , H04L45/308 , H04L45/52 , H04L45/583 , H04L45/586 , H04L45/60 , H04L47/11 , H04L47/122 , H04L47/15 , H04L47/16 , H04L47/20 , H04L47/24 , H04L47/32 , H04L47/70 , H04L47/728 , H04L47/745 , H04L47/746 , H04L47/805 , H04L47/822 , H04L47/825 , H04L49/201 , H04L49/205 , H04L49/25 , H04L49/3009 , H04L49/3018 , H04L49/351 , H04L49/354 , H04L49/503 , H04L49/55 , H04L49/602 , H04L49/70 , H04L69/18 , H04L69/40 , H04Q3/66 , H04Q2213/13352 , H04Q2213/13353
摘要： A multi-service network switch capable of providing multiple network services from a single platform. The switch incorporates a distributed packet forwarding architecture where each of the various cards is capable of making independent forwarding decisions. The switch further allows for dynamic resource management for dynamically assigning modem and ISDN resources to an incoming call. The switch may also include fault management features to guard against single points of failure within the switch. The switch further allows the partitioning of the switch into multiple virtual routers where each virtual router has its own wet of resources and a routing table. Each virtual router is further partitioned into virtual private networks for further controlling access to the network. The switch's supports policy based routing where specific routing paths are selected based a domain name, a telephone number, and the like. The switch also provides tiered access of the Internet by defining quality of access levels to each incoming connection request. The switch may further support an IP routing protocol and architecture in which the layer two protocols are independent of the physical interface they run on. Furthermore, the switch includes a generic forwarding interface software for hiding the details of transmitting and receiving packets over different interface types.
摘要翻译：一种能够从单一平台提供多种网络服务的多业务网络交换机。交换机集成了分布式分组转发架构，其中每个各种卡能够进行独立的转发决策。该交换机进一步允许动态资源管理，以动态地将调制解调器和ISDN资源分配给来电。交换机还可以包括故障管理特征以防止交换机内的单点故障。交换机还允许将交换机划分成多个虚拟路由器，其中每个虚拟路由器具有自己的资源和路由表。每个虚拟路由器被进一步划分成虚拟专用网络，以进一步控制对网络的访问。交换机支持基于策略的路由，其中基于域名，电话号码等选择特定路由路径。交换机还通过定义每个传入连接请求的访问级别的质量来提供互联网的分层访问。交换机可以进一步支持IP路由协议和架构，其中第二层协议独立于其运行的物理接口。此外，该交换机包括用于隐藏通过不同接口类型发送和接收分组的细节的通用转发接口软件。

89. 发明申请

US20040095922A1 Method and apparatus for interconnecting networks 审中-公开
标题翻译：互联网络的方法和装置
公开(公告)号：US20040095922A1
公开(公告)日：2004-05-20
申请号：US10690094
申请日：2003-10-21
发明人： Yasushi Sasagawa
IPC分类号： H04L012/28
CPC分类号： H04L45/00 , H04L12/4604 , H04L45/52
摘要： A first IP network and a second IP network are provided with a first router device and a second router device which support MPLS. A transport network is provided with one or more core devices supporting GMPLS. A first edge device and a second edge device which support both MPLS and GMPLS are provided at a boundary between the first and second IP networks and the transport network. A GMPLS path is set between the first and second edge devices. An MPLS path is set between the first and second router devices. The MPLS path tunnels the GMPLS path.
摘要翻译：第一IP网络和第二IP网络设置有第一路由器设备和支持MPLS的第二路由器设备。传输网络提供一个或多个支持GMPLS的核心设备。在第一和第二IP网络和传输网络之间的边界处提供支持MPLS和GMPLS的第一边缘设备和第二边缘设备。在第一和第二边缘设备之间设置GMPLS路径。在第一和第二路由器设备之间设置MPLS路径。 MPLS路由隧道GMPLS路径。

90. 发明申请

US20020099849A1 Dense virtual router packet switching 有权
标题翻译：密集的虚拟路由器分组交换
公开(公告)号：US20020099849A1
公开(公告)日：2002-07-25
申请号：US10000191
申请日：2001-10-19
申请人： Crescent Networks, Inc.
发明人： Stephen M. Alfieri , Chase T. Tingley
IPC分类号： G06F015/173
CPC分类号： H04L45/586 , H04L45/00 , H04L45/52
摘要： A dense virtual router packet switching system includes a memory divided into context areas for a set of virtual private routed networks (VPRNs). Each context area includes a routing table and routing protocol state information for a corresponding VPRN. Each of a set of different routing tasks operates with a separate routing table and separate routing protocol state information to realize a corresponding virtual router. Context selection logic selectively couples the routing tasks to the different context areas of the memory to realize a set of virtual routers for all the VPRNs. The system supports a large number of routes by exploiting the segmentation of the VPRNs. Rather than having a single large routing table and associated routing process, which can load hardware resources in proportion to the square of the number of routes in the routing table, routes are distributed among a number of VPRNs having generally smaller tables and correspondingly less processing demand.
摘要翻译：密集的虚拟路由器分组交换系统包括划分成一组虚拟专用路由网络（VPRN）的上下文区域的存储器。每个上下文区域包括用于相应VPRN的路由表和路由协议状态信息。一组不同的路由任务中的每一个通过单独的路由表和单独的路由协议状态信息来操作，以实现对应的虚拟路由器。上下文选择逻辑选择性地将路由任务耦合到存储器的不同上下文区域，以便为所有VPRN实现一组虚拟路由器。系统通过利用VPRN的分段来支持大量的路由。不需要具有与路由表中的路由数量的平方成比例的硬件资源的单个大型路由表和相关联的路由过程，而是将路由分布在具有通常较小的表的多个VPRN中，并且相应地减少处理需求。

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