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    Optimized border gateway protocol best path selection for optimal route reflection
    2.
    发明授权
    Optimized border gateway protocol best path selection for optimal route reflection 有权

    公开(公告)号：US10097449B2

    公开(公告)日：2018-10-09

    申请号：US14805300

    申请日：2015-07-21

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Keyur Patel ,  Serpil Bayraktar ,  Manish Bhardwaj ,  David Delano Ward ,  Burjiz Pithawala

    IPC: H04L12/707 ,  H04L12/721 ,  H04L29/08 ,  H04L12/717

    Abstract: Embodiments are provided for optimized best path selection for optimal route reflection and include configuring, by a cloud-based node, a first cluster of nodes in an autonomous system, and determining whether any paths for a network address prefix are available in the first cluster of nodes. Embodiments also include selecting a best path from one or more paths if the one or more paths are determined to be available in the first cluster for the network address prefix. Embodiments further include advertising the best path to one or more nodes in the first cluster. More specific embodiments include determining, if no paths for the network address prefix are available in the first cluster, another path for the network address prefix is available in a second cluster of nodes of the autonomous system, and selecting the other path as the best path.

    Transit domain control
    5.
    发明授权
    Transit domain control 有权

    公开(公告)号：US09722910B2

    公开(公告)日：2017-08-01

    申请号：US14666786

    申请日：2015-03-24

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Yi Yang ,  Alvaro E. Retana ,  Keyur Patel ,  Fabien Degouet

    IPC: H04L12/56 ,  H04L12/715 ,  H04L12/66 ,  H04L29/06

    CPC classification number: H04L45/04 ,  H04L12/66 ,  H04L63/101 ,  H04L65/1036 ,  H04L65/607

    Abstract: A method for controlling transit of routing messages in a network comprising multiple autonomous systems (AS) is disclosed. The method includes receiving, at a first AS, a routing message of an inter-AS routing protocol and identifying that the routing message comprises transit domain control (TDC) information specifying one or more autonomous systems to which the routing message may be propagated and/or one or more autonomous systems to which the routing message may not be propagated. The method further includes propagating the routing message from the first AS to a second AS in accordance with the TDC information.

    AUTOMATIC OPTIMAL ROUTE REFLECTOR ROOT ADDRESS ASSIGNMENT TO ROUTE REFLECTOR CLIENTS AND FAST FAILOVER IN A NETWORK ENVIRONMENT
    6.
    发明申请
    AUTOMATIC OPTIMAL ROUTE REFLECTOR ROOT ADDRESS ASSIGNMENT TO ROUTE REFLECTOR CLIENTS AND FAST FAILOVER IN A NETWORK ENVIRONMENT 有权
    自动最佳路由反射器根地址转发反射器客户端和网络环境中的快速故障

    公开(公告)号：US20160248658A1

    公开(公告)日：2016-08-25

    申请号：US14809017

    申请日：2015-07-24

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Keyur Patel ,  Serpil Bayraktar ,  Manish Bhardwaj ,  David Delano Ward ,  Burjiz Pithawala

    IPC: H04L12/751 ,  H04L12/741 ,  H04L12/721

    CPC classification number: H04L45/02 ,  H04L45/127 ,  H04L45/42 ,  H04L45/48 ,  H04L45/74

    Abstract: Embodiments are provided for providing optimal route reflector (ORR) root address assignment to route reflector clients and fast failover capabilities in an autonomous system, including identifying a first node in an autonomous system as a candidate root node of a first routing group, identifying a client node based on a neighbor address used in a first routing protocol, mapping the neighbor address to routing information received from the client node via a second routing protocol, and associating the neighbor address with the first routing group if the routing information includes an identifier of the first routing group. In more specific embodiments, identifying the first node as a candidate root node includes determining the first node and the first routing group are advertised in a first protocol packet, and determining the first node and the second routing group are advertised in a second protocol packet.

    Abstract translation: 提供实施例用于在自治系统中为路由反射器客户端提供最佳路由反射器（ORR）根地址分配和快速故障转移能力，包括将自治系统中的第一节点标识为第一路由组的候选根节点，识别客户端 基于在第一路由协议中使用的邻居地址的节点，将所述邻居地址映射到经由第二路由协议从所述客户端节点接收的路由信息​​，并且如果所述路由信息包括所述第一路由协议的标识符，则将所述邻居地址与所述第一路由组相关联 第一路由组。 在更具体的实施例中，将第一节点识别为候选根节点包括确定第一节点并且第一路由组在第一协议分组中被通告，并且确定第一节点和第二路由组在第二协议分组中被通告。

    Delta database synchronization
    7.
    发明授权
    Delta database synchronization 审中-公开

    公开(公告)号：US10671590B2

    公开(公告)日：2020-06-02

    申请号：US15254943

    申请日：2016-09-01

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Alfred C. Lindem, III ,  Keyur Patel ,  Abhay Roy ,  Derek Man-Kit Yeung

    IPC: G06F16/00 ,  G06F16/23 ,  H04L29/08 ,  G06F16/27

    Abstract: Aspects of the embodiments are directed to synchronizing at least a portion of a link-state database. A network element can lose an adjacency. The network element can transmit a request to a neighboring network element for synchronization of a link-state database. The request can include a version number of a last synchronized link-state database from the neighboring network element. The neighboring network element can determine whether the version of the link-state database is greater than or less than a copy of the link-state database stored by the neighboring network element. If the requested version number is less than the neighboring network element's link-state database version number, then the neighboring network element can send changes to the link-state database since the requested link-state database version number.

    Automatically Detecting Best Paths From Shadow Route Reflectors
    8.
    发明申请
    Automatically Detecting Best Paths From Shadow Route Reflectors 审中-公开
    自动检测来自阴影路由反射器的最佳路径

    公开(公告)号：US20140036905A1

    公开(公告)日：2014-02-06

    申请号：US14051860

    申请日：2013-10-11

    Applicant: Cisco Technology, Inc.

    Inventor： Selma Yilmaz ,  Keyur Patel ,  Nitin Kumar ,  Robert Raszuk ,  Satish Mynam

    IPC: H04L12/721

    CPC classification number: H04L45/123 ,  H04L45/02 ,  H04L45/04 ,  H04L45/12 ,  H04L45/42 ,  H04L45/52

    Abstract: In an embodiment, a method comprises receiving a path advertisement comprising information about an available path and a well-known community value associated with the available path. A modified best path calculation is performed in response to receiving the available path either from a higher-ranked device or from a device that is not participating in diverse path calculation, resulting in creating a particular best path. The particular best path is advertised to other routers with or without a restriction indicator based on whether it is a client learned path or non-client iBGP peer learned path and based on whether the advertisement is directed to a client or a non-client iBGP peer.

    Abstract translation: 在一个实施例中，一种方法包括接收包括关于可用路径的信息和与可用路径相关联的公知社区值的路径通告。 响应于从更高排名的设备或不参与不同路径计算的设备接收可用路径而执行修改的最佳路径计算，导致创建特定的最佳路径。 根据客户端学习路径还是非客户端iBGP对等体学习路径，并根据广告是指向客户端还是非客户端iBGP对等体，将特定最佳路径通告给具有或不具有限制指示符的其他路由器 。

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