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    Routing packet traffic using hierarchical forwarding groups
    35.
    发明授权
    Routing packet traffic using hierarchical forwarding groups 有权
    使用分层转发组路由数据包流量

    公开(公告)号：US09538423B2

    公开(公告)日：2017-01-03

    申请号：US14070462

    申请日：2013-11-01

    Applicant: Cisco Technology, Inc.

    Inventor： Santiago Alvarez ,  Sami Boutros

    IPC: H04L12/801 ,  H04W28/08 ,  H04L12/715

    CPC classification number: H04W28/085 ,  H04L45/46

    Abstract: Routing packet traffic using hierarchical forwarding groups is disclosed. In an embodiment, a packet is received at a packet router. Data related to the packet is received at a first forwarding group. Based on a first forwarding policy associated with the first forwarding group, a particular second forwarding group is selected from a set of forwarding groups that are members of the first forwarding group. Each forwarding group of the set of forwarding groups that are members of the first forwarding group is associated with a unique set of paths. Data related to the packet is provided to the particular second forwarding group. Based on a second forwarding policy associated with the particular second forwarding group, a particular path is selected from a set of paths that are associated with the particular second forwarding group. The packet is forwarded to a network node via the particular path.

    Abstract translation: 公开了使用分层转发组来路由分组流量。 在一个实施例中，在分组路由器处接收分组。 与第一转发组接收到与分组相关的数据。 基于与第一转发组相关联的第一转发策略，从作为第一转发组的成员的一组转发组中选择特定的第二转发组。 作为第一转发组的成员的转发组集合中的每个转发组与唯一的一组路径相关联。 与分组相关的数据被提供给特定的第二转发组。 基于与特定第二转发组相关联的第二转发策略，从与特定第二转发组相关联的一组路径中选择特定路径。 该分组经由特定路径被转发到网络节点。

    Selecting a remote path using forwarding path preferences
    36.
    发明授权
    Selecting a remote path using forwarding path preferences 有权
    使用转发路径首选项选择远程路径

    公开(公告)号：US09531627B1

    公开(公告)日：2016-12-27

    申请号：US14155769

    申请日：2014-01-15

    Applicant: Cisco Technology, Inc.

    Inventor： Santiago Alvarez ,  Sami Boutros ,  Syed Kamran Raza

    IPC: H04L12/723

    CPC classification number: H04L45/507

    Abstract: Selecting remote path using forwarding path preferences is disclosed. In an embodiment, a message of a first network node identifying one or more forwarding path preferences in association with one or more destination addresses is received at a packet router. A particular path corresponding to a particular forwarding path preference from among the one or more forwarding path preferences received in the message is determined and in response a particular label is determined. A forwarding entry associating the particular label with the particular forwarding path preference and the particular path is stored. The particular label is forwarded to a second network node. A packet including the particular label is received at the packet router and the particular path associated with the particular label included with the packet is selected based on the forwarding entry associated with the label. The packet is forwarded to a network node via the selected path.

    Abstract translation: 公开了使用转发路径首选项选择远程路径。 在一个实施例中，在分组路由器处接收到与一个或多个目的地地址相关联地标识一个或多个转发路径偏好的第一网络节点的消息。 确定与在消息中接收到的一个或多个转发路径偏好中的特定转发路径偏好相对应的特定路径，并且响应于确定特定标签。 存储将特定标签与特定转发路径偏好和特定路径相关联的转发条目。 特定的标签被转发到第二个网络节点。 在分组路由器处接收到包含特定标签的分组，并且基于与标签相关联的转发条目来选择与分组所包含的特定标签相关联的特定路径。 分组通过所选路径转发到网络节点。

    Segment routing label switch paths in network functions virtualization communications networks
    37.
    发明授权
    Segment routing label switch paths in network functions virtualization communications networks 有权
    网络功能中的段路由标签交换路径虚拟化通信网络

    公开(公告)号：US09503363B2

    公开(公告)日：2016-11-22

    申请号：US14659220

    申请日：2015-03-16

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Muthurajah Sivabalan ,  Sami Boutros ,  Clarence Filsfils ,  Rex Emmanuel Fernando ,  Lakshmi Sharma ,  Santiago Vazquez Freitas ,  Bruce McDougall ,  Robert Keith Fielding

    IPC: H04L12/28 ,  H04L12/723 ,  H04L12/911 ,  H04L29/12

    CPC classification number: H04L45/50 ,  H04L47/825 ,  H04L61/2007

    Abstract: A method is provided in one example embodiment and includes receiving a request to create a path through a network, wherein the path originates on a first network device and terminates on the second network device; identifying a first controller associated with the first network device, wherein the first controller proxies control plane functions for the first network device; identifying a second controller associated with the second network device, wherein the second controller proxies control plane functions for the second network device; and computing the path using the first controller as a source and the second controller as a destination. The first controller installs the computed path on the first network device and the second controller installs the computed path on the second network device.

    Abstract translation: 在一个示例性实施例中提供了一种方法，并且包括接收通过网络创建路径的请求，其中所述路径起始于第一网络设备并终止于所述第二网络设备上; 识别与所述第一网络设备相关联的第一控制器，其中所述第一控制器代理所述第一网络设备的控制平面功能; 识别与所述第二网络设备相关联的第二控制器，其中所述第二控制器代理所述第二网络设备的控制平面功能; 以及使用第一控制器作为源并且将第二控制器作为目的地来计算路径。 第一个控制器在第一个网络设备上安装计算的路径，第二个控制器将计算的路径安装在第二个网络设备上。

    Bi-directional flow stickiness in a network environment
    38.
    发明授权
    Bi-directional flow stickiness in a network environment 有权
    网络环境中双向流动粘性

    公开(公告)号：US09455908B2

    公开(公告)日：2016-09-27

    申请号：US14325059

    申请日：2014-07-07

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Rex Emmanuel Fernando ,  Dhananjaya Rao ,  Sami Boutros

    IPC: H04L12/721 ,  H04L12/741 ,  H04L12/733 ,  H04L12/715

    CPC classification number: H04L45/74 ,  H04L45/04 ,  H04L45/20 ,  H04L45/36 ,  H04L45/38

    Abstract: An example method for bi-directional flow stickiness in a network environment is provided and includes receiving a packet of a flow from a source address in a network, and destined to a destination address outside the network, looking up a flow table for an entry corresponding to the flow, and caching a forward flow entry and a reverse flow entry in the flow table if the look up results in a miss, the forward flow entry indicating a routing lookup, and the reverse flow entry indicating a previous hop from which the packet was received to maintain a bi-directional flow stickiness. Some embodiments also include receiving another packet from the destination address outside the network destined to the source address in the network, and forwarding it to the previous hop listed in the reverse flow entry.

    Abstract translation: 提供了一种用于网络环境中的双向流动粘性的示例性方法，包括从网络中的源地址接收流的分组，并且发往网络外部的目的地地址，查找对应的条目的流表 如果查询导致错过，则前向流入口和逆流条目缓存在流表中，前向流条目指示路由查找，反向流条目指示前一跳，其中分组 被收到以保持双向流动粘性。 一些实施例还包括从网络外的目的地址接收去往网络中的源地址的另一个分组，并将其转发到反向流入口中列出的上一跳。

    Stitching multicast trees
    39.
    发明授权
    Stitching multicast trees 有权

    公开(公告)号：US09419817B2

    公开(公告)日：2016-08-16

    申请号：US14740512

    申请日：2015-06-16

    Applicant: Cisco Technology, Inc.

    Inventor： Ali Sajassi ,  Samer Salam ,  Sami Boutros

    IPC: H04L12/46 ,  H04L12/753 ,  H04L12/18 ,  H04L12/751 ,  H04L29/12 ,  H04L12/723

    CPC classification number: H04L12/4679 ,  H04L12/1863 ,  H04L45/02 ,  H04L45/48 ,  H04L45/50 ,  H04L61/2069

    Abstract: Techniques for stitching multicast trees in a multiple data center environment. According to one embodiment, a technique for stitching multicast trees is provided, which includes determining, at an edge device of a data center, one or more Virtual Local Area Networks (VLANs) assigned to the edge device as a result of a designated forwarder election. An assigned forwarder message is sent by the edge device to one or more devices on the data center, the assigned forwarder message advertising the edge device as a designated forwarder for the VLANs assigned to the edge device. For each of the VLANs assigned to the edge device, the assigned forwarder message causes the edge device to be included in a multicast tree for the VLAN when the assigned forwarder message is received by specific ones of the devices in the data center that are associated with the VLAN.

    BI-DIRECTIONAL FLOW STICKINESS IN A NETWORK ENVIRONMENT
    40.
    发明申请
    BI-DIRECTIONAL FLOW STICKINESS IN A NETWORK ENVIRONMENT 有权
    网络环境中的双向流动软件

    公开(公告)号：US20160006654A1

    公开(公告)日：2016-01-07

    申请号：US14325059

    申请日：2014-07-07

    Applicant: CISCO TECHNOLOGY, INC.

    Inventor： Rex Emmanuel Fernando ,  Dhananjaya Rao ,  Sami Boutros

    IPC: H04L12/741 ,  H04L12/733

    CPC classification number: H04L45/74 ,  H04L45/04 ,  H04L45/20 ,  H04L45/36 ,  H04L45/38

    Abstract: An example method for bi-directional flow stickiness in a network environment is provided and includes receiving a packet of a flow from a source address in a network, and destined to a destination address outside the network, looking up a flow table for an entry corresponding to the flow, and caching a forward flow entry and a reverse flow entry in the flow table if the look up results in a miss, the forward flow entry indicating a routing lookup, and the reverse flow entry indicating a previous hop from which the packet was received to maintain a bi-directional flow stickiness. Some embodiments also include receiving another packet from the destination address outside the network destined to the source address in the network, and forwarding it to the previous hop listed in the reverse flow entry.

    Abstract translation: 提供了一种用于网络环境中的双向流动粘性的示例性方法，包括从网络中的源地址接收流的分组，并且发往网络外部的目的地地址，查找对应的条目的流表 如果查询导致错过，则前向流入口和逆流条目缓存在流表中，前向流条目指示路由查找，反向流条目指示前一跳，其中分组 被收到以保持双向流动粘性。 一些实施例还包括从网络外的目的地址接收去往网络中的源地址的另一个分组，并将其转发到反向流入口中列出的上一跳。

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