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    Methods to improve ECMP for BGP services and BGP for provider edges with hybrid label distribution
    1.
    发明授权
    Methods to improve ECMP for BGP services and BGP for provider edges with hybrid label distribution 有权

    公开(公告)号：US11212221B1

    公开(公告)日：2021-12-28

    申请号：US16891194

    申请日：2020-06-03

    Applicant: Cisco Technology, Inc.

    Inventor： Swadesh Agrawal ,  Dhananjaya Rao ,  Bertrand Duvivier ,  Sameer R. Gulrajani ,  Yuri Tsier

    IPC: H04L12/723 ,  H04L12/46 ,  H04L12/703 ,  H04L12/707

    Abstract: First and second egress nodes are each multi-homed to a customer edge (CE) that participates in virtual routing and forwarding (VRF). First forwarding information is configured on the first egress node. The first information includes VRF labels and defines forwarding of traffic based on the VRF labels and a status of a primary path to the CE. The VRF labels include a per-VRF label for the VRF and a per-CE label for the CE. Second forwarding information is configured on the second egress node. The second forwarding information includes the per-VRF label and the per-CE label, and defines traffic forwarding based on the VRF labels. Upon receiving traffic for the CE that carries the per-VRF label, the first egress node determines the status of the primary path, and forwards the traffic to either the CE over the primary path or to the second egress node, depending on the status.

    METHODS TO IMPROVE ECMP FOR BGP SERVICES AND BGP FOR PROVIDER EDGES WITH HYBRID LABEL DISTRIBUTION
    2.
    发明申请
    METHODS TO IMPROVE ECMP FOR BGP SERVICES AND BGP FOR PROVIDER EDGES WITH HYBRID LABEL DISTRIBUTION 有权

    公开(公告)号：US20210385157A1

    公开(公告)日：2021-12-09

    申请号：US16891194

    申请日：2020-06-03

    Applicant: Cisco Technology, Inc.

    Inventor： Swadesh Agrawal ,  Dhananjaya Rao ,  Bertrand Duvivier ,  Sameer R. Gulrajani ,  Yuri Tsier

    IPC: H04L12/723 ,  H04L12/707 ,  H04L12/703 ,  H04L12/46

    Abstract: First and second egress nodes are each multi-homed to a customer edge (CE) that participates in virtual routing and forwarding (VRF). First forwarding information is configured on the first egress node. The first information includes VRF labels and defines forwarding of traffic based on the VRF labels and a status of a primary path to the CE. The VRF labels include a per-VRF label for the VRF and a per-CE label for the CE. Second forwarding information is configured on the second egress node. The second forwarding information includes the per-VRF label and the per-CE label, and defines traffic forwarding based on the VRF labels. Upon receiving traffic for the CE that carries the per-VRF label, the first egress node determines the status of the primary path, and forwards the traffic to either the CE over the primary path or to the second egress node, depending on the status.

    Providing network-wide enhanced load balancing
    6.
    发明授权
    Providing network-wide enhanced load balancing 有权
    提供全网增强的负载均衡

    公开(公告)号：US09210088B2

    公开(公告)日：2015-12-08

    申请号：US13834479

    申请日：2013-03-15

    Applicant: Cisco Technology, Inc.

    Inventor： Dhananjaya Rao

    IPC: H04L12/803 ,  H04L29/08

    CPC classification number: H04L47/125 ,  H04L67/1023

    Abstract: A method and apparatus to provide network-wide enhanced load balancing. In one embodiment a first message comprising a first value and an address is generated. The first message is transmitted to a first node via a first communication link. A second message comprising a second value and the address is generated. The first and second values are unequal. The second message is transmitted to the first node via a second communication link. Packets are received, wherein each of the packets comprises the address. A first percentage of the packets are forwarded to a first device via the first communication link, wherein the first percentage is proportional to the first value. A second percentage of the packets are forwarded to a second device via the second communication link, wherein the second percentage is proportional to the second value.

    Abstract translation: 一种提供全网增强负载均衡的方法和装置。 在一个实施例中，生成包括第一值和地址的第一消息。 第一消息经由第一通信链路被发送到第一节点。 产生包括第二值和地址的第二消息。 第一个和第二个值是不等的。 第二消息经由第二通信链路发送到第一节点。 接收到分组，其中每个分组包括该地址。 第一百分比的分组经由第一通信链路被转发到第一设备，其中第一百分比与第一个值成比例。 第二百分比的分组经由第二通信链路转发到第二设备，其中第二百分比与第二值成正比。

    Dual Adjacency Between Edge Devices at a Network Site
    7.
    发明申请
    Dual Adjacency Between Edge Devices at a Network Site 审中-公开
    网络边缘设备之间的双重邻接

    公开(公告)号：US20150254149A1

    公开(公告)日：2015-09-10

    申请号：US14721135

    申请日：2015-05-26

    Applicant: Cisco Technology, Inc.

    Inventor： Dhananjaya Rao ,  Victor M. Moreno ,  Hasmit Grover ,  Gaurav Badoni

    IPC: G06F11/20 ,  H04L12/751 ,  H04L29/08

    CPC classification number: G06F11/2033 ,  G06F2201/86 ,  H04L12/4641 ,  H04L45/02 ,  H04L47/746 ,  H04L67/141

    Abstract: Devices, methods and instructions encoded on computer readable medium for implementation of a dual-adjacency between edge devices of a network site. A first edge device comprises one or more local interfaces configured for communication, via a local network, with one or more network devices co-located in a first network site. The first edge device also comprises one or more overlay interfaces configured for communication, via a core network, with one or more network devices located in one or more other network sites connected to the core network. The first edge device comprises a processor configured to establish, via at least one of the local interfaces, a site communication channel with a second edge device co-located in the first network site. The processor is further configured to establish an overlay communication channel, via at least one of the overlay interfaces, with the second edge device.

    Abstract translation: 编码在计算机可读介质上的设备，方法和指令，用于实现网络站点的边缘设备之间的双邻接。 第一边缘设备包括一个或多个本地接口，其被配置用于经由本地网络与共同位于第一网络站点中的一个或多个网络设备进行通信。 第一边缘设备还包括被配置为经由核心网络与位于连接到核心网络的一个或多个其他网络站点中的一个或多个网络设备进行通信的一个或多个覆盖接口。 第一边缘设备包括处理器，其被配置为经由本地接口中的至少一个建立与第一网络站点中共址的第二边缘设备的站点通信信道。 处理器还被配置为经由至少一个覆盖接口与第二边缘设备建立覆盖通信信道。

    VIRTUAL SERVICE TOPOLOGIES IN VIRTUAL PRIVATE NETWORKS
    8.
    发明申请
    VIRTUAL SERVICE TOPOLOGIES IN VIRTUAL PRIVATE NETWORKS 有权
    虚拟私人网络虚拟服务拓扑

    公开(公告)号：US20140313928A1

    公开(公告)日：2014-10-23

    申请号：US13865926

    申请日：2013-04-18

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Rex Fernando ,  Dhananjaya Rao ,  Jim Guichard ,  Paul Quinn

    IPC: H04L12/751 ,  H04L12/931

    CPC classification number: H04L45/02 ,  H04L49/70

    Abstract: In one embodiment, a method includes storing a service topology route at a network device interconnecting at least two zones comprising a plurality of hosts, and propagating the service topology route to create a service chain comprising a service node in communication with the network device. The service topology route creates a forwarding state at network devices in the service chain for use in inter-zone routing in a virtual private network. An apparatus and logic are also disclosed herein.

    Abstract translation: 在一个实施例中，一种方法包括在互连包括多个主机的至少两个区域的网络设备处存储服务拓扑路由，并且传播服务拓扑路由以创建包括与网络设备通信的服务节点的服务链。 服务拓扑路由在服务链中的网络设备上创建转发状态，以用于虚拟专用网络中的区域间路由。 本文还公开了一种装置和逻辑。

    DETECTION OF CABLING ERROR IN COMMUNICATION NETWORK
    9.
    发明申请
    DETECTION OF CABLING ERROR IN COMMUNICATION NETWORK 有权
    检测通信网络中的电缆错误

    公开(公告)号：US20140105029A1

    公开(公告)日：2014-04-17

    申请号：US13653129

    申请日：2012-10-16

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Vipin Jain ,  Govind Prasad Sharma ,  Dhananjaya Rao ,  Herman Levenson

    IPC: H04L12/26

    CPC classification number: H04L43/0811 ,  H04L41/12 ,  H04L43/10 ,  Y02D30/30

    Abstract: In one embodiment, a method at a network device includes receiving a link layer advertisement, comparing information in the link layer advertisement with connectivity information stored at the network device, and based on the comparison, determining if there is a cabling error between the network device and a link peer transmitting the link layer advertisement. An apparatus and logic are also disclosed herein.

    Abstract translation: 在一个实施例中，网络设备的方法包括接收链路层通告，将链路层广告中的信息与存储在网络设备中的连接性信息进行比较，并且基于该比较，确定网络设备之间是否存在布线错误 以及发送链路层广告的链路对等体。 本文还公开了一种装置和逻辑。

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