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    METHOD AND SYSTEM FOR PATH MONITORING USING SEGMENT ROUTING
    11.
    发明申请
    METHOD AND SYSTEM FOR PATH MONITORING USING SEGMENT ROUTING 有权
    使用分段路由进行路径监测的方法和系统

    公开(公告)号：US20140269266A1

    公开(公告)日：2014-09-18

    申请号：US14292264

    申请日：2014-05-30

    Applicant: Cisco Technology, Inc.

    Inventor： Clarence Filsfils ,  Daniel C. Frost ,  Stewart F. Bryant ,  Don R. Heidrich

    IPC: H04L12/26

    CPC classification number: H04L43/50 ,  H04L41/12 ,  H04L43/10 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

    Abstract: A method and system are disclosed for use of segment routing in monitoring of a network path. In one embodiment, the method includes selecting a plurality of segment identifiers and assembling the segment identifiers into a segment identifier stack, where the segment identifier stack encodes a test path within the network for attempted routing of a test message. The method may further include inserting the segment identifier stack into a header associated with the test message, and forwarding the test message according to an entry in a forwarding table corresponding to the segment identifier at the top of the segment identifier stack. Interior gateway protocol advertisements may be used to communicate segment identifiers for creating or updating of the data structure or the forwarding table. In an embodiment, the system includes one or more network interfaces and a processor configured to perform the steps of the method.

    Abstract translation: 公开了一种在监视网络路径中使用分段路由的方法和系统。 在一个实施例中，该方法包括选择多个段标识符并将段标识符组合成段标识符堆栈，其中段标识符堆栈对网络内的测试路径进行编码以尝试路由测试消息。 该方法还可以包括将段标识符堆栈插入到与测试消息相关联的报头中，以及根据与段标识符堆栈顶部的段标识符相对应的转发表中的条目转发测试消息。 内部网关协议广告可用于传送用于创建或更新数据结构或转发表的段标识符。 在一个实施例中，系统包括一个或多个网络接口和被配置为执行该方法的步骤的处理器。

    MPLS SEGMENT-ROUTING
    12.
    发明申请
    MPLS SEGMENT-ROUTING 有权
    MPLS分段路由

    公开(公告)号：US20140098675A1

    公开(公告)日：2014-04-10

    申请号：US13760155

    申请日：2013-02-06

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Daniel C. Frost ,  Stewart F. Bryant ,  Clarence Filsfils

    IPC: H04L12/56

    CPC classification number: H04L45/50 ,  H04L41/00 ,  H04L45/02 ,  H04L45/26 ,  H04L45/34 ,  H04L45/38 ,  H04L45/42 ,  H04L45/44 ,  H04L45/58 ,  H04L45/66 ,  H04L69/166

    Abstract: MPLS segment routing is disclosed. In one embodiment, a first core router generates a first data structure that maps first portcodes to respective identities of first neighbor routers or respective first links, wherein the first portcodes identify respective first ports of the first core router, and wherein the first ports are coupled to the first neighbor routers, respectively, via the first links, respectively. The first core router generates and transmits a first link-state packet, wherein the first link-state packet comprises an identity of the first core router and the first data structure.

    Abstract translation: 公开了MPLS段路由。 在一个实施例中，第一核心路由器生成第一数据结构，其将第一端口码映射到第一邻居路由器或相应的第一链路的相应标识，其中第一端口号标识第一核心路由器的相应第一端口，并且其中第一端口被耦合 分别通过第一链路到达第一邻居路由器。 第一核心路由器生成并发送第一链路状态分组，其中第一链路状态分组包括第一核心路由器的标识和第一数据结构。

    Framework for dynamically programmed network packet processing
    15.
    发明授权
    Framework for dynamically programmed network packet processing 有权
    动态编程网络包处理框架

    公开(公告)号：US09462043B2

    公开(公告)日：2016-10-04

    申请号：US13927394

    申请日：2013-06-26

    Applicant: Cisco Technology, Inc.

    Inventor： Daniel C. Frost ,  Stewart F. Bryant ,  Clarence Filsfils

    IPC: G06F15/173 ,  G06F15/177 ,  H04L29/08 ,  H04L12/721 ,  G06F15/16 ,  H04L29/06

    CPC classification number: H04L67/10 ,  H04L45/566 ,  H04L63/0428 ,  H04L2463/041

    Abstract: One or more functions to be performed on a packet at one or more network nodes along a network path are determined at a network device. A packet is generated which includes a packet header. Included in the packet header are an instruction pointer and an instruction portion. A first instruction for the one or more functions to be performed at the one or more network nodes is written to the instruction portion. Additionally, a value pointing to the first instruction is written to the instruction pointer. The packet is transmitted along the network path from the network device.

    Abstract translation: 在网络设备处确定在网络路径的一个或多个网络节点处对分组执行的一个或多个功能。 生成包含分组报头的分组。 分组报头中包括指令指针和指令部分。 将在一个或多个网络节点执行的一个或多个功能的第一指令写入指令部分。 另外，指向第一指令的值被写入指令指针。 该分组沿网络路径从网络设备传输。

    Framework for Dynamically Programmed Network Packet Processing
    17.
    发明申请
    Framework for Dynamically Programmed Network Packet Processing 有权
    动态程序化网络数据包处理框架

    公开(公告)号：US20140280717A1

    公开(公告)日：2014-09-18

    申请号：US13927394

    申请日：2013-06-26

    Applicant: Cisco Technology, Inc.

    Inventor： Daniel C. Frost ,  Stewart F. Bryant ,  Clarence Filsfils

    IPC: H04L29/08

    CPC classification number: H04L67/10 ,  H04L45/566 ,  H04L63/0428 ,  H04L2463/041

    Abstract: One or more functions to be performed on a packet at one or more network nodes along a network path are determined at a network device. A packet is generated which includes a packet header. Included in the packet header are an instruction pointer and an instruction portion. A first instruction for the one or more functions to be performed at the one or more network nodes is written to the instruction portion. Additionally, a value pointing to the first instruction is written to the instruction pointer. The packet is transmitted along the network path from the network device.

    Abstract translation: 在网络设备处确定在网络路径的一个或多个网络节点处对分组执行的一个或多个功能。 生成包含分组报头的分组。 分组报头中包括指令指针和指令部分。 将在一个或多个网络节点执行的一个或多个功能的第一指令写入指令部分。 另外，指向第一指令的值被写入指令指针。 该分组沿网络路径从网络设备传输。

    Opportunistic compression of routing segment identifier stacks
    19.
    发明授权
    Opportunistic compression of routing segment identifier stacks 有权
    路由段标识符栈的机会压缩

    公开(公告)号：US09537769B2

    公开(公告)日：2017-01-03

    申请号：US14449632

    申请日：2014-08-01

    Applicant: Cisco Technology, Inc.

    Inventor： Stewart F. Bryant ,  Daniel C. Frost

    IPC: H04L12/26 ,  H04L12/741 ,  H04L12/723 ,  H04L12/715 ,  H04L12/721

    CPC classification number: H04L45/745 ,  H04L45/04 ,  H04L45/12 ,  H04L45/38 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74

    Abstract: A method and device are disclosed for opportunistic compression of routing segment identifiers. In one embodiment, the method includes participating in routing of a first data packet through a first node in a network, and subsequently entering into an arrangement with an adjacent node in the network. The first data packet includes a first plurality of routing segment identifiers, and additional data packets to be routed through the first node also include the first plurality of routing segment identifiers. The arrangement entered into includes representation of the first plurality of routing segment identifiers by a single compression identifier. The method further includes participating in routing of at least one of the additional data packets using the compression identifier instead of the first plurality of routing segment identifiers. In an embodiment, the device includes one or more network interfaces and a processor configured to perform the steps of the method.

    Abstract translation: 公开了用于路由段标识符的机会性压缩的方法和设备。 在一个实施例中，该方法包括通过网络中的第一节点参与第一数据分组的路由，并且随后进入与网络中的相邻节点的布置。 第一数据分组包括第一多个路由段标识符，并且要通过第一节点路由的附加数据分组还包括第一多个路由段标识符。 输入的安排包括通过单个压缩标识符表示第一多个路由段标识符。 该方法还包括使用压缩标识符而不是第一多个路由段标识符来参与至少一个附加数据分组的路由。 在一个实施例中，设备包括一个或多个网络接口和被配置为执行该方法的步骤的处理器。

    Universal labels in internetworking
    20.
    发明授权
    Universal labels in internetworking 有权
    网络通用标签

    公开(公告)号：US09467367B2

    公开(公告)日：2016-10-11

    申请号：US13835190

    申请日：2013-03-15

    Applicant: Cisco Technology, Inc.

    Inventor： Stewart Frederick Bryant ,  Daniel C. Frost ,  Neil Jarvis ,  George L. Swallow

    IPC: H04L12/723

    CPC classification number: H04L45/50

    Abstract: In an embodiment, a method comprises: receiving a data communications packet comprising one or more labels in a label stack; determining whether a table identifier is present in the label stack. In response to determining that the table identifier is present in the label stack: based, at least in part, on the table identifier, a label table is determined; a next hop for the data communications packet is determined by performing a next-hop lookup in the label table using at least one of the one or more labels; and the data communications packet is forwarded to the next hop. In an embodiment, the method is performed by one or more computing devices.

    Abstract translation: 在一个实施例中，一种方法包括：在标签堆栈中接收包括一个或多个标签的数据通信包; 确定标签堆栈中是否存在表标识符。 响应于确定表标识符存在于标签堆栈中：至少部分地基于表标识符，确定标签表; 通过使用一个或多个标签中的至少一个来执行标签表中的下一跳查找来确定数据通信分组的下一跳; 并将数据通信包转发到下一跳。 在一个实施例中，该方法由一个或多个计算设备执行。

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