Method and system for frame and protocol classification
    33.
    发明授权
    Method and system for frame and protocol classification 失效
    框架和协议分类的方法和系统

    公开(公告)号:US07440417B2

    公开(公告)日:2008-10-21

    申请号:US10870730

    申请日:2004-06-17

    IPC分类号: H04L12/28

    CPC分类号: H04L29/06 H04L69/18 H04L69/22

    摘要: A system and method of protocol and frame classification in a system for data processing is disclosed, including, analyzing a portion of the, packet or frame according to predetermined tests, and storing characteristics of the packet for use in subsequent processing of the frame. The characteristics are preferably obtained with hardware, which does so quickly and in a uniform time period. The stored characteristics of the packet are then used by the network processing complexes in further processing of the frame. The processor is preconditioned with a starting instruction address or cede entry point and the location of the beginning of the layer 3 header as well as flags for the type of frame.

    摘要翻译: 公开了一种用于数据处理的系统中的协议和帧分类的系统和方法,包括:根据预定的测试分析一部分数据包或帧,以及存储该数据包的特性以用于帧的后续处理。 这些特征优选地通过硬件获得,硬件在快速且均匀的时间周期内这样做。 然后,分组的存储特性由网络处理复合体用于帧的进一步处理。 处理器使用开始指令地址或者入门点进行预处理,并且第3层头的开始位置以及帧类型的标志。

    Structure for Preventing Starvation in a Slotted Ring Data Communications Network
    34.
    发明申请
    Structure for Preventing Starvation in a Slotted Ring Data Communications Network 失效
    在一个开槽环数据通信网络中预防饥饿的结构

    公开(公告)号:US20080159176A1

    公开(公告)日:2008-07-03

    申请号:US12042612

    申请日:2008-03-05

    IPC分类号: H04L12/28

    CPC分类号: H04L12/4035 H04L12/66

    摘要: A design structure is provided for a slotted ring network, in which a node may transmit a non-renewable slot reservation with any unreserved slot. The reservation restricts other nodes from transmitting a new packet in the slot. When the slot returns around the ring to the reserving node, the slot will be available. Preferably, reservation is made responsive to a starvation condition in the reserving node, which may be detected in any of various ways. In an optional enhancement, a reservation identifies the reserving node, and another node on the ring is free to transmit a new packet in the reserved slot if the new packet will reach its destination at or before the reserving node, and thus will not interfere with the reservation.

    摘要翻译: 为时隙环网提供了一种设计结构,其中节点可以用任何未预留的时隙发送不可再生的时隙预留。 该预约限制其他节点在时隙中发送新的分组。 当插槽返回环到保留节点时,插槽将可用。 优选地,响应于预留节点中的饥饿状况做出预约,其可以以各种方式中的任一种来检测。 在可选增强中,预留识别预留节点,并且如果新分组将在保留节点处或之前到达其目的地,则环上的另一个节点可以自由地在保留时隙中发送新分组,并且因此不会干扰 预订。

    Method and system for frame and protocol classification
    37.
    发明授权
    Method and system for frame and protocol classification 失效
    框架和协议分类的方法和系统

    公开(公告)号:US06775284B1

    公开(公告)日:2004-08-10

    申请号:US09479027

    申请日:2000-01-07

    IPC分类号: H04L1256

    CPC分类号: H04L29/06 H04L69/18 H04L69/22

    摘要: A system and method of protocol and frame classification in a system for data processing (e.g., switching or routing data packets or frames). The present invention includes analyzing a portion of the packet or frame according to predetermined tests, then storing key characteristics of the packet for use in subsequent processing of the frame. The key characteristics for the frame (or input information unit, such as the type of layer 3 protocol used in the frame, the layer 2 encapsulation technique, the starting instruction address and flags indicating whether the frame uses a virtual local area network, preferably using hardware to quickly and in a uniform time period. The stored key characteristics of the packet are then used by the network processing complexes in its further processing of the frame. The processor is preconditioned with a starting instruction address and the location of the beginning of the layer 3 header as well as flags for the type of frame. That is, the instruction address or code entry point is used by the processor to start processing for a frame at the right place, based on the type of frame. Additionally, additional instruction addresses can be stacked and used sequentially at branches to avoid additional tests and branching instructions.

    摘要翻译: 用于数据处理(例如,切换或路由数据分组或帧)的系统中的协议和帧分类的系统和方法。 本发明包括根据预定的测试来分析分组或帧的一部分,然后存储该分组的关键特征以用于该帧的后续处理。 帧(或输入信息单元,例如帧中使用的层3协议的类型,第2层封装技术,起始指令地址和指示帧是否使用虚拟局域网的标志)的关键特性,优选地使用 硬件在快速和统一的时间段内,存储的密钥特性随后由网络处理复合体在帧的进一步处理中被使用,处理器使用起始指令地址和开始指令的位置进行预处理 第3层标题以及帧类型的标志,即处理器使用指令地址或代码入口点,根据帧类型对正确位置的帧开始处理,另外附加指令 地址可以在分支上顺序堆叠和使用,以避免额外的测试和分支指令。

    Method and system for controlling transmission of packets in computer networks
    38.
    发明授权
    Method and system for controlling transmission of packets in computer networks 有权
    控制计算机网络中数据包传输的方法和系统

    公开(公告)号:US06771652B1

    公开(公告)日:2004-08-03

    申请号:US09448380

    申请日:1999-11-23

    IPC分类号: H04L1256

    CPC分类号: H04L47/10 H04L47/29 H04L47/30

    摘要: A method and system for controlling a flow of a plurality of packets in a computer network is disclosed. The computer network includes a queue. The method and system include determining a queue level for the queue and determining an offered rate of the plurality of packets to the queue. The method and system also include controlling a transmission fraction of the plurality of packets to the queue, based on the queue level, the offered rate and a previous value of the transmission fraction so that the transmission fraction and the queue level are critically damped if the queue level is between at least a first queue level and a second queue level.

    摘要翻译: 公开了一种用于控制计算机网络中的多个分组的流的方法和系统。 计算机网络包括队列。 该方法和系统包括确定队列的队列级别并确定多个分组到队列的提供速率。 该方法和系统还包括基于队列级别,所提供的速率和传输级数的先前值来控制多个分组到队列的传输分数,使得如果传输分数和队列级别被严格衰减,则 队列级别在至少第一队列级别和第二队列级别之间。

    Method and apparatus for segmenting network traffic variable length frames
    39.
    发明授权
    Method and apparatus for segmenting network traffic variable length frames 失效
    分段网络流量可变长度帧的方法和装置

    公开(公告)号:US06714562B1

    公开(公告)日:2004-03-30

    申请号:US09522369

    申请日:2000-03-10

    IPC分类号: H04J324

    摘要: Method and apparatus for segmenting variable length frames into fixed length cells in a network equipment. The method allows preparing information to build the cells resulting in the segmenting of a succession of frames directed to the same destination in said network equipment. The cell may be packed with more than one frame. The cell information comprises the address where to read the frame data in a first storage unit, the cell header itself which indicates if the cell includes data from one packet or for more packets, a pointer per each of said more packets, designating the place of the end of data of the previous packet in the cell and a cell type field indicating one of the following types: a start of a new frame type, a continuation of frame type, a end of current frame type and a start and a end of a new frame type. The segmenting apparatus comprises a finite state machine using an Add/substract unit to compute the cell information and write said cell information in a second storage unit.

    摘要翻译: 用于将可变长度帧分割成网络设备中的固定长度单元的方法和装置。 该方法允许准备信息以构建小区,从而导致在所述网络设备中定向到同一目的地的一系列帧的分段。 电池可以包装多于一个框架。 小区信息包括在第一存储单元中读取帧数据的地址,指示小区是否包括来自一个分组的数据或更多分组的小区头自身,每个更多分组的指针,指定每个分组的位置 小区中的先前分组的数据的结束以及指示以下类型之一的小区类型字段:新帧类型的开始,帧类型的继续,当前帧类型的结束以及开始和结束 一种新的帧类型。 分割装置包括使用加/减单元计算单元信息并在第二存储单元中写入所述单元信息的有限状态机。