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    SEGMENT ROUTING NETWORK PROCESSING OF PACKETS
    81.
    发明公开
    SEGMENT ROUTING NETWORK PROCESSING OF PACKETS 审中-公开

    公开(公告)号：EP4277231A3

    公开(公告)日：2024-01-03

    申请号：EP23199701.6

    申请日：2019-01-03

    Applicant: Cisco Technology, Inc.

    Inventor： FILSFILS, Clarence ,  BASHANDY, Ahmed Refaat ,  RAZA, Syed Kamran ,  DUKES, Darren ,  BRISSETTE, Patrice ,  BHATTACHARYA, Jisu

    IPC: H04L45/00 ,  H04L45/741 ,  H04L45/745

    Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.

    SEGMENT ROUTING NETWORK PROCESSING OF PACKETS
    82.
    发明公开
    SEGMENT ROUTING NETWORK PROCESSING OF PACKETS 审中-公开

    公开(公告)号：EP4277231A2

    公开(公告)日：2023-11-15

    申请号：EP23199701.6

    申请日：2019-01-03

    Applicant: Cisco Technology, Inc.

    Inventor： FILSFILS, Clarence ,  BASHANDY, Ahmed Refaat ,  RAZA, Syed Kamran ,  DUKES, Darren ,  BRISSETTE, Patrice ,  BHATTACHARYA, Jisu

    IPC: H04L45/745

    Abstract: In one embodiment, segment routing (SR) network processing of packets is performed on packets having a segment identifier structure providing processing and/or memory efficiencies. Responsive to an identified particular segment routing policy, the particular router retrieves from memory a dynamic segment routing identifier portion of the particular SR policy that includes a SR node value and a SR function value. The SR function value identifies segment routing processing to be performed by a router in the network identified based on the SR node value. A segment routing discriminator is independently identified, possibly being a fixed value for all segment identifiers in the network. Before sending into the network, a complete segment identifier is added to the particular packet by combining the segment routing discriminator with the dynamic segment routing identifier portion. The particular packet including the complete segment identifier is sent into the network.

    INDEXED SEGMENT ID
    87.
    发明公开
    INDEXED SEGMENT ID 有权
    INDEXED段的ID

    公开(公告)号：EP2974164A1

    公开(公告)日：2016-01-20

    申请号：EP14710447.5

    申请日：2014-02-25

    Applicant: Cisco Technology, Inc.

    Inventor： FILSFILS, Clarence ,  PREVIDI, Stefano, B. ,  BASHANDY, Ahmed, R.

    IPC: H04L12/701 ,  H04L12/723

    CPC classification number: H04L45/745 ,  H04L45/00 ,  H04L45/02 ,  H04L45/50 ,  H04L45/54

    Abstract: An apparatus and method for using indexed segment identifiers in segment routing. An example method involves receiving a globally unique index value at a node. The method also involves receiving a base value at the node, where the base value comprises a segment routing value configured to identify a nodal segment. The method then involves calculating a segment identifier based on the index value and the base value.

    Abstract translation: 一种在分段路由中使用索引分段标识符的设备和方法。 示例方法涉及在节点处接收全局唯一索引值。 该方法还涉及在该节点处接收基准值，其中基准值包括被配置成识别节点片段的片段路由值。 该方法然后涉及基于索引值和基值来计算分段标识符。

    DISTRIBUTED CONNECTIVITY VERIFICATION PROTOCOL REDUNDANCY
    88.
    发明授权
    DISTRIBUTED CONNECTIVITY VERIFICATION PROTOCOL REDUNDANCY 有权
    分布式连通性验证协议冗余

    公开(公告)号：EP2604001B1

    公开(公告)日：2015-05-20

    申请号：EP11749271.0

    申请日：2011-07-25

    Applicant: Cisco Technology, Inc.

    Inventor： BOUTROS, Sami ,  MASSE, Sylvain ,  FILSFILS, Clarence

    IPC: H04L12/24 ,  H04L12/721

    CPC classification number: H04L43/0811 ,  H04L41/0663 ,  H04L45/245 ,  H04L45/68 ,  H04L69/16 ,  Y02D50/30

    Abstract: In one embodiment, a connectivity verification protocol (CVP) session for a particular virtual interface (VI) may operate on a particular group of two or more line cards (LCs) on a network device. The group of LCs may then transmit CVP session packets, at a reduced rate that is sufficient to maintain the CVP session based on a negotiated CVP full rate, onto the particular VI through ingress path processing on the network device. Ingress path processing, in particular, takes transmitted CVP session packets and egresses them onto an appropriate LC of the network device currently responsible for the VI egress. Also, in response to receiving CVP session packets for the VI on an LC of the network device currently responsible for the VI ingress, the receiving LC may forward the received CVP session packets to the particular corresponding group of LCs, which may then process the received CVP session packets.

    INSTALLING AND USING A SUBSET OF ROUTES
    89.
    发明公开
    INSTALLING AND USING A SUBSET OF ROUTES 有权
    安装和零件速率条路径的使用

    公开(公告)号：EP2751958A1

    公开(公告)日：2014-07-09

    申请号：EP12755933.4

    申请日：2012-08-21

    Applicant: Cisco Technology, Inc.

    Inventor： FILSFILS, Clarence ,  TSIANG, David J. ,  BETTINK, John H. W. ,  TATAR, Mohammed Ismael

    IPC: H04L12/70

    CPC classification number: H04L45/025 ,  H04L45/04 ,  H04L45/54 ,  H04L45/748

    Abstract: In one embodiment, an Internet Protocol (IP) routing information base of a packet switching device is filtered to produce a significantly smaller subset of IP routes that are installed in one or more forwarding information bases for forwarding of IP packets. In one embodiment, these smaller forwarding information bases are located in memory local to a network processor to more quickly perform lookup operations thereon. In one embodiment, one or more of these forwarding information bases is used only for exact matching of addresses (not longest prefix matching). In one embodiment, the IP routes in these smaller forwarding information bases substantially correspond to packet switching devices in a network (e.g., core and edge routers), such as in contrast to including all the IP routes for devices external to the network.

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