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    • 6. 发明授权
    • Intraserver tag-switched distributed packet processing for network access servers
    • 针对网络接入服务器的Intraserver标签交换分布式分组处理
    • US07616646B1
    • 2009-11-10
    • US09735718
    • 2000-12-12
    • Stephen MaSuresh SangiahJagannadh TangiralaR. Ashby Armistead
    • Stephen MaSuresh SangiahJagannadh TangiralaR. Ashby Armistead
    • H04L12/28
    • H04L12/2896H04L45/02H04L45/54H04L45/66
    • An access server architecture, and methods for use of the architecture to increase the scalability of and balance processor load for a network access server device, are disclosed. In this architecture, packet forwarding and packet processing are distributed amongst cards serving low-speed access lines (i.e., line cards). Thus, as the number of line cards expands, forwarding resources are expanded in at least rough proportion. The NAS route switch controller and the high-speed ports used to access the network are largely relieved of packet processing tasks for traffic passing through the server. The egress port uses a distribution engine that performs the routing lookup for packets received at the high-speed interface, tags the packets with an adjacency table pointer, and sends them to the appropriate forwarding engine for packet processing. The route switch controller, largely uninvolved in the processing of packets, updates routing information needed by each distribution or forwarding engine.
    • 公开了访问服务器架构以及使用该架构来增加网络访问服务器设备的可扩展性和平衡处理器负载的方法。 在该架构中,分组转发和分组处理分配在服务于低速接入线路(即,线路卡)的卡中。 因此,随着线卡的数量的扩展,转发资源至少大部分扩展。 用于访问网络的NAS路由交换机控制器和高速端口大大减轻了通过服务器的流量的数据包处理任务。 出口端口使用分配引擎,对高速接口接收到的数据包进行路由查找,用邻接表指针标记数据包,并将其发送到适当的转发引擎进行数据包处理。 路由交换控制器在很大程度上不参与分组处理,更新每个分发或转发引擎所需的路由信息​​。
    • 7. 发明授权
    • Distributed packet processing architecture for network access servers
    • 网络接入服务器的分布式数据包处理架构
    • US07606245B2
    • 2009-10-20
    • US11207435
    • 2005-08-18
    • Stephen MaSuresh SangiahJagannadh TangiralaR. Ashby Armistead
    • Stephen MaSuresh SangiahJagannadh TangiralaR. Ashby Armistead
    • H04L12/28
    • H04L45/00H04L45/583
    • An access server architecture, and methods for use of the architecture, are disclosed. The architecture and methods are designed to increase the scalability of and balance processor load for a network access server device. In this architecture, packet forwarding and packet processing are distributed amongst the cards serving the low-speed access lines, such that each line card is responsible for performing forwarding and packet processing for packets associated with the low-speed ports that line card serves. As the number of line cards expands, forwarding resources are expanded in at least rough proportion. The NAS route switch controller, and the high-speed ports, are largely relieved of packet processing tasks because the egress port uses a distribution engine that performs a cursory examination on one or more header fields on packets received—comprehending only enough information to allow each packet to be distributed to the appropriate line card for full packet processing.
    • 公开了一种访问服务器架构以及该架构的使用方法。 该架构和方法旨在提高网络访问服务器设备的可扩展性并平衡处理器负载。 在该架构中,分组转发和分组处理分布在服务于低速接入线路的卡之间,使得每个线路卡负责对与线卡服务的低速端口相关联的分组执行转发和分组处理。 随着线卡数量的扩大,转发资源至少占有一定比例。 NAS路由交换机控制器和高速端口在很大程度上减轻了分组处理任务,因为出口端口使用一个分发引擎,该分发引擎对接收到的分组上的一个或多个报头字段执行粗略检查,只能包含足够的信息以允许每个 分组分发到适当的线卡进行全包处理。
    • 8. 发明申请
    • Digital Mapping System
    • 数字映射系统
    • US20070096945A1
    • 2007-05-03
    • US11567054
    • 2006-12-05
    • Jens Eilstrup RasmussenLars RasmussenBret TaylorJames NorrisStephen MaAndrew KirmseNoel GordonSeth LaForge
    • Jens Eilstrup RasmussenLars RasmussenBret TaylorJames NorrisStephen MaAndrew KirmseNoel GordonSeth LaForge
    • G08G1/123
    • G06T3/40G01C21/32G01C21/367G06F17/3087G06Q40/12G06T11/40G06T17/05G09B29/003G09B29/004G09B29/10
    • Various methods, systems, and apparatus for implementing aspects of a digital mapping system are disclosed. One such method includes sending a location request from a client-side computing device to a map tile server, receiving a set of map tiles in response to the location request, assembling said received map tiles into a tile grid, aligning the tile grid relative to a clipping shape, and displaying the result as a map image. One apparatus according to aspects of the present invention includes means for sending a location request from a client-side computing device to a map tile server, means for receiving a set of map tiles in response to the location request, means for assembling said received map tiles into a tile grid, means for aligning the tile grid relative to a clipping shape, and means for displaying the result as a map image. Such an apparatus may further include direction control or zoom control objects as interactive overlays on the displayed map image, and may also include route or location overlays on the map image.
    • 公开了用于实现数字地图系统方面的各种方法,系统和装置。 一种这样的方法包括将位置请求从客户端计算设备发送到地图瓦片服务器,响应于位置请求接收一组地图瓦片,将所接收的地图瓦片组装成瓦片格栅,将瓦片格栅相对于 剪切形状,并将结果显示为地图图像。 根据本发明的方面的一种装置包括用于将位置请求从客户端计算设备发送到地图瓦片服务器的装置,用于响应于位置请求来接收一组地图瓦片的装置,用于组装所述接收到的地图的装置 将瓦片切成瓷砖格栅,用于使瓦片格栅相对于裁切形状对准的装置,以及用于将结果显示为地图图像的装置。 这样的装置还可以包括作为显示的地图图像上的交互叠加的方向控制或变焦控制对象,并且还可以包括地图图像上的路线或位置叠加。
    • 9. 发明授权
    • Distributed packet processing architecture for network access servers
    • 网络接入服务器的分布式数据包处理架构
    • US06954463B1
    • 2005-10-11
    • US09735280
    • 2000-12-11
    • Stephen MaSuresh SangiahJagannadh TangiralaR. Ashby Armistead
    • Stephen MaSuresh SangiahJagannadh TangiralaR. Ashby Armistead
    • H04L12/28H04L12/56
    • H04L45/00H04L45/583
    • An access server architecture, and methods for use of the architecture, are disclosed. The architecture and methods are designed to increase the scalability of and balance processor load for a network access server. In this architecture, packet forwarding and packet processing are distributed amongst the cards serving the low-speed access lines, such that each line card is responsible for performing forwarding and packet processing for packets associated with the low-speed ports that line card serves. As the number of line cards expands, forwarding resources are expanded in at least rough proportion. The NAS route switch controller, and the high-speed ports, are largely relieved of packet processing tasks because the egress port uses a distribution engine that performs a cursory examination on one or more header fields on packets received—comprehending only enough information to allow each packet to be distributed to the appropriate line card for full processing.
    • 公开了一种访问服务器架构以及该架构的使用方法。 该架构和方法旨在提高网络访问服务器的可扩展性并平衡处理器负载。 在该架构中,分组转发和分组处理分布在服务于低速接入线路的卡之间,使得每个线路卡负责对与线卡服务的低速端口相关联的分组执行转发和分组处理。 随着线卡数量的扩大,转发资源至少占有一定比例。 NAS路由交换机控制器和高速端口在很大程度上减轻了分组处理任务,因为出口端口使用一个分发引擎,该分发引擎对接收到的分组上的一个或多个报头字段执行粗略检查,只能包含足够的信息以允许每个 数据包要分配到适当的线卡进行全面处理。