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    SIGNALING CO-ROUTED AND NON CO-ROUTED LSPS OF A BIDIRECTIONAL PACKET TE TUNNEL
    51.
    发明申请
    SIGNALING CO-ROUTED AND NON CO-ROUTED LSPS OF A BIDIRECTIONAL PACKET TE TUNNEL 审中-公开
    双向包装TE隧道的信号共同路由和非共同路由

    公开(公告)号：US20150281115A1

    公开(公告)日：2015-10-01

    申请号：US14735971

    申请日：2015-06-10

    Applicant: Cisco Technology, Inc.

    Inventor： Rakesh Gandhi ,  Muthurajah Sivabalan

    IPC: H04L12/913 ,  H04L12/911 ,  H04L12/721 ,  H04L12/723

    CPC classification number: H04L47/724 ,  H04L12/4633 ,  H04L45/36 ,  H04L45/50 ,  H04L47/825

    Abstract: Particular embodiments may enable setup and signaling of co-routed and non co-routed label switched paths (LSPs) of a bidirectional packet traffic engineering (TE) tunnel in an unambiguous manner with respect to provisioning of the LSPs/tunnel. A head-end node may set up the bidirectional packet TE tunnel by computing a forward (and possibly a reverse) direction LSP, and then signal the bidirectional TE tunnel utilizing, e.g., extensions to an associated Resource Reservation Protocol (RSVP) signaling method. The extensions to the associated RSVP signaling method include a plurality of additional Association Types of an Extended Association object carried in a RSVP Path message transmitted by the head-end node to the tail-end node over the forward direction LSP, wherein the additional Association Types explicitly identify the provisioning of the forward and reverse direction LSPs as co-routed or non co-routed.

    Abstract translation: 具体实施例可以使得能够以相对于LSP /隧道的提供的明确方式建立和发送双向分组流量工程（TE）隧道的共路由和非共路由标签交换路径（LSP）。 前端节点可以通过计算前向（可能是反向）LSP来建立双向分组TE隧道，然后利用例如关联的资源预留协议（RSVP）信令方法的扩展来向双向TE隧道发信号。 相关RSVP信令方法的扩展包括由前端节点通过前向LSP发送到尾端节点的RSVP路径消息中携带的扩展关联对象的多个附加关联类型，其中附加关联类型 明确地将前向和反向LSP的配置标识为共路由或非共路由。

    MONITORING PRIMARY AND LOCAL REPAIR PATHS ON ALL HOPS BETWEEN TWO NODES
    54.
    发明公开
    MONITORING PRIMARY AND LOCAL REPAIR PATHS ON ALL HOPS BETWEEN TWO NODES 审中-公开

    公开(公告)号：US20240205131A1

    公开(公告)日：2024-06-20

    申请号：US18504840

    申请日：2023-11-08

    Applicant: Cisco Technology, Inc.

    Inventor： Jaganbabu Rajamanickam ,  Madhan Sankaranarayanan ,  Nagendra Kumar Nainar ,  Rakesh Gandhi

    IPC: H04L45/02 ,  H04L45/00 ,  H04L45/28

    CPC classification number: H04L45/02 ,  H04L45/20 ,  H04L45/28

    Abstract: In one aspect, a method for monitoring a Fast Re-Route (FRR) path between a source node (Node-S) and a destination node (Node-E) in a network, includes generating a discovery-probe at the source node (Node-S) to detect at least one node with an FRR indicator along the FRR path that includes a plurality of next available nodes. The method also includes upon the discovery probe reaching a first node with the FRR indicator, generating a primary probe configured to detect a primary path and a repair probe configured to detect a repair path. The method also includes in response to receiving the primary probe via the primary path and the repair probe via the repair path at the destination node, sending the primary probe and the repair probe back to the source node to monitor the FRR path between the source node and the destination node.

    MULTIPROTOCOL LABEL SWITCHING (MPLS) DATA PLANE HEADER EXTENSIONS
    59.
    发明申请
    MULTIPROTOCOL LABEL SWITCHING (MPLS) DATA PLANE HEADER EXTENSIONS 有权

    公开(公告)号：US20230082724A1

    公开(公告)日：2023-03-16

    申请号：US17699638

    申请日：2022-03-21

    Applicant: Cisco Technology, Inc.

    Inventor： Jaganbabu Rajamanickam ,  Rakesh Gandhi ,  Jisu Bhattacharya

    IPC: H04L45/50 ,  H04L45/42 ,  H04L45/12

    Abstract: Systems and techniques are provided for implementing multiprotocol label switching (MPLS) header extensions. In some examples, a method can include, receiving, by a router of a MPLS network, a data packet. In some aspects, the method can include adding, by the router of the MPLS network, at least one entry to an MPLS stack of the data packet, wherein the at least one entry includes an MPLS extension indicator (MEI) that is associated with at least one of an in-stack extension header presence indicator (IPI) and a bottom-of-stack extension header presence indicator (BPI). In some examples, the method can include adding, based on the IPI and the BPI, at least one of an in-stack extension header and a bottom-of-stack extension header to the MPLS stack of the data packet.

    IN-SITU PASSIVE PERFORMANCE MEASUREMENT IN A NETWORK ENVIRONMENT
    60.
    发明申请
    IN-SITU PASSIVE PERFORMANCE MEASUREMENT IN A NETWORK ENVIRONMENT 有权

    公开(公告)号：US20230076549A1

    公开(公告)日：2023-03-09

    申请号：US17987029

    申请日：2022-11-15

    Applicant: Cisco Technology, Inc.

    Inventor： Rakesh Gandhi ,  Clarence Filsfils ,  Sagar Soni ,  Patrick Khordoc

    IPC: H04L45/00 ,  H04L45/50 ,  H04L69/22 ,  H04L43/0823 ,  H04L47/20 ,  H04L45/74

    Abstract: Techniques for in-situ passive performance measurement are described. In one embodiment, a method includes receiving a data packet at a first network element, determining whether measurement information is to be collected for the data packet, providing one or more measurement fields for the data packet based on a determination that measurement information is to be collected for the data packet in which at least one measurement field identifies a measurement type, and forwarding the data packet to a second network element. The method further includes determining, by the second network element, the measurement type for the data packet, and performing one or more actions based on the measurement type.

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