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    Seamless segment routing
    1.
    发明授权
    Seamless segment routing 有权

    公开(公告)号：US10164838B2

    公开(公告)日：2018-12-25

    申请号：US15639398

    申请日：2017-06-30

    申请人： Cisco Technology, Inc.

    发明人： Clarence Filsfils ,  David D. Ward ,  Stewart F. Bryant ,  Daniel C. Frost ,  Nagendra Kumar Nainar ,  Carlos M. Pignataro

    IPC分类号： H04L12/715 ,  H04L12/24 ,  H04L12/721 ,  H04L12/723 ,  H04L12/741 ,  H04L12/931 ,  H04L12/46 ,  H04L12/913

    摘要： A method, network device, and computer readable medium are disclosed. In one embodiment of the method, a data packet is received at a node within a first segment routing enabled access network. The first access network is connected, via a first area edge node, to a first area of a subdivided segment routing enabled network, and a specified destination for the data packet is reachable via a second segment routing enabled access network connected to the subdivided network. The method embodiment further includes receiving from a centralized controller a remote segment identifier stack, where the remote segment identifier stack encodes a path extending from the first area edge node to the second access network. The embodiment of the method continues with encapsulating the data packet with a full segment identifier stack comprising the remote segment identifier stack, and forwarding the encapsulated data packet toward the first area edge node.

    MPLS segment-routing
    3.
    发明授权
    MPLS segment-routing 有权
    MPLS段路由

    公开(公告)号：US09049233B2

    公开(公告)日：2015-06-02

    申请号：US13760155

    申请日：2013-02-06

    申请人： Cisco Technology, Inc.

    发明人： Daniel C. Frost ,  Stewart F. Bryant ,  Clarence Filsfils

    IPC分类号： H04L12/70 ,  H04L29/06 ,  H04L12/721 ,  H04L12/723 ,  H04L12/751 ,  H04L12/717

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

    摘要： 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.

    摘要翻译： 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。

    OPPORTUNISTIC COMPRESSION OF ROUTING SEGMENT IDENTIFIER STACKS
    4.
    发明申请
    OPPORTUNISTIC COMPRESSION OF ROUTING SEGMENT IDENTIFIER STACKS 有权
    路由器标识符堆栈的机会压缩

    公开(公告)号：US20140369356A1

    公开(公告)日：2014-12-18

    申请号：US14449632

    申请日：2014-08-01

    申请人： Cisco Technology, Inc.

    发明人： Stewart F. Bryant ,  Daniel C. Frost

    IPC分类号： H04L12/741 ,  H04L12/723

    CPC分类号： H04L45/745 ,  H04L45/04 ,  H04L45/12 ,  H04L45/38 ,  H04L45/46 ,  H04L45/50 ,  H04L45/507 ,  H04L45/54 ,  H04L45/74

    摘要： 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.

    摘要翻译： 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。

    METHOD AND SYSTEM FOR PATH MONITORING USING SEGMENT ROUTING
    6.
    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

    申请人： Cisco Technology, Inc.

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

    IPC分类号： H04L12/26

    CPC分类号： H04L43/50 ,  H04L41/12 ,  H04L43/10 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50

    摘要： 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.

    摘要翻译： 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
    7.
    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

    申请人： CISCO TECHNOLOGY, INC.

    发明人： Daniel C. Frost ,  Stewart F. Bryant ,  Clarence Filsfils

    IPC分类号： H04L12/56

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

    摘要： 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.

    摘要翻译： 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。

    MPLS segment routing
    9.
    发明授权
    MPLS segment routing 有权

    公开(公告)号：US10218610B2

    公开(公告)日：2019-02-26

    申请号：US15637744

    申请日：2017-06-29

    申请人： Cisco Technology, Inc.

    发明人： Daniel C. Frost ,  Stewart F. Bryant ,  Clarence Filsfils

    IPC分类号： H04L12/723 ,  H04L12/721 ,  H04L12/751 ,  H04L12/717 ,  H04L29/06 ,  H04L12/24 ,  H04L12/775

    摘要： A method, communications processing device, and computer readable medium for MPLS segment routing are disclosed. One embodiment of the method comprises generating a first link-state packet comprising a first data structure. The first data structure maps a first portcode to a link connecting the first router within the network or to an additional router reachable from the first router. The method embodiment further includes receiving an incoming data packet encapsulated with a header comprising an incoming portcode stack having the first portcode as its uppermost portcode. The method embodiment further includes removing the first portcode from the incoming portcode stack to create an outgoing portcode stack for an outgoing data packet, and forwarding the outgoing data packet via a port, of the first router, identified by the first portcode.