公开(公告)号：US09548887B2

公开(公告)日：2017-01-17

申请号：US14182429

申请日：2014-02-18

Applicant: Cisco Technology, Inc.

Inventor： Vrushali Ashtaputre ,  Gaurav Badoni ,  Dhananjaya Rao ,  Sreenivas Duvvuri ,  Hasmit Grover

IPC: H04L12/24 ,  H04L12/46 ,  H04L12/18

CPC classification number: H04L41/0668 ,  H04L12/1886 ,  H04L12/4633 ,  H04L12/4675

Abstract: Techniques are provided for designating, in an overlay transport virtualization (OTV) network connected to a data center, an edge device to act as a backup authoritative edge device (BAED) for an authoritative edge device (AED) for multicast packet encapsulation and forwarding. Data traffic associated with a given virtual local area network (VLAN) may be detected from a multicast source in the data center addressed to recipients in a site group. A mapping may be generated between the site group and a core data group in the OTV network for traffic from the multicast source. Advertisements may be sent of the mapping to edge devices in another data center across the OTV network. A similar configuration is presented for a BAED for inbound multicast traffic to a data center.

Abstract translation: 提供了技术，用于在连接到数据中心的覆盖传输虚拟化（OTV）网络中指定用于授权边缘设备（AED）的用于组播分组封装和转发的备份权威边缘设备（BAED）的边缘设备。 与给定的虚拟局域网（VLAN）相关联的数据业务可以从寻址到站点组中的接收者的数据中心中的组播源检测。 可以在OTV网络中的站点组和核心数据组之间生成用于来自组播源的流量的映射。 广告可以通过OTV网络发送到另一个数据中心的边缘设备的映射。 针对数据中心的入站组播流量的BAED提供了类似的配置。

公开(公告)号：US09521073B2

公开(公告)日：2016-12-13

申请号：US13654491

申请日：2012-10-18

Applicant: Cisco Technology, Inc.

Inventor： Dhananjaya Rao ,  Hasmit Grover ,  Shekher Bulusu

IPC: H04L12/715 ,  H04L12/46 ,  H04L12/66 ,  H04L12/64 ,  H04L12/705

CPC classification number: H04L45/64 ,  H04L12/4625 ,  H04L12/6418 ,  H04L12/66 ,  H04L45/18

Abstract: In some embodiments, edge devices associated with a network segment are identified. One of the devices is elected as an authoritative device and any previous authoritative devices are instructed to halt forwarding network traffic to an overlay network.

Abstract translation: 在一些实施例中，识别与网络段相关联的边缘设备。 其中一个设备被选为权威设备，并且指示任何先前的授权设备停止将网络流量转发到覆盖网络。

公开(公告)号：US09338084B2

公开(公告)日：2016-05-10

申请号：US13964327

申请日：2013-08-12

Applicant: Cisco Technology, Inc.

Inventor： Gaurav Badoni ,  Dhananjaya Rao ,  Hasmit Grover ,  Senthil Kenchiah ,  Victor Moreno

IPC: H04L12/703 ,  H04L12/721

CPC classification number: H04L45/28 ,  H04L45/12

Abstract: Techniques are presented herein for optimizing traffic routing in overlay networks. At a first edge device located at a first site in a network, a message is received that indicates address information of a network device. The address information of the network device is stored in an address table. The address information is associated with a site identifier that identifies a second site at which the network device is located. The site identifier is mapped to an identifier associated with a second edge device that is responsible for routing traffic to network devices at the second site.

Abstract translation: 本文介绍了优化覆盖网络中的流量路由的技术。 在位于网络中的第一站点的第一边缘设备处，接收到指示网络设备的地址信息的消息。 网络设备的地址信息存储在地址表中。 地址信息与标识网络设备所在的第二站点的站点标识符相关联。 站点标识符被映射到与负责将通信路由到第二站点处的网络设备的第二边缘设备相关联的标识符。

公开(公告)号：US09338078B2

公开(公告)日：2016-05-10

申请号：US13800419

申请日：2013-03-13

Applicant: Cisco Technology, Inc.

Inventor： Madhukar Anand ,  Hasmit Grover ,  Paul Wells

IPC: H04L12/28 ,  H04L12/751 ,  H04L12/775 ,  H04L12/703

CPC classification number: H04L45/02 ,  H04L45/28 ,  H04L45/58

Abstract: A link state information correction scheme is implemented by the present disclosure. In one embodiment, the correction scheme is implemented by a reload logic module that cooperates with link state protocol logic configured on a reload routing element (or routing element that has reloaded or hard restarted). The reload logic module is configured to receive a database descriptor message at a reload routing element, where the database descriptor message is received from a neighbor routing element during an adjacency formation. The reload logic module is also configured to determine whether the database descriptor message identifies a stale version of a link state advertisement (LSA), where the LSA is self-originated by the reload routing element. The reload logic module is also configured to generate a new version of the LSA during the adjacency formation.

Abstract translation: 通过本公开实现链路状态信息校正方案。 在一个实施例中，校正方案由重载逻辑模块实现，该重载逻辑模块与在重载路由元件（或重新加载或重新启动的路由元件）上配置的链路状态协议逻辑协同工作。 重载逻辑模块被配置为在重新加载路由元件处接收数据库描述符消息，其中在邻接形成期间从邻居路由元件接收数据库描述符消息。 重新加载逻辑模块还被配置为确定数据库描述符消息是否识别链路状态通告（LSA）的陈旧版本，其中LSA由重新加载路由元件自发。 重载逻辑模块还被配置为在邻接形成期间生成LSA的新版本。

公开(公告)号：US09300582B2

公开(公告)日：2016-03-29

申请号：US13719510

申请日：2012-12-19

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Hasmit Grover ,  Dhananjaya Rao ,  Victor Moreno

IPC: H04L12/56 ,  H04L12/741 ,  H04L12/715

CPC classification number: H04L45/745 ,  H04L45/64

Abstract: In one embodiment, a method includes receiving a packet at an edge device in a first network site in communication with a second network site through a transport network, the packet comprising a destination address for a host at the second network site, verifying at the edge device a connection with the host, and inserting the destination address in a forwarding information base at the edge device upon verifying the connection with the host. An apparatus and logic are also disclosed herein.

Abstract translation: 在一个实施例中，一种方法包括在通过传输网络与第二网络站点通信的第一网络站点中的边缘设备处接收分组，该分组包括在第二网络站点处的主机的目的地地址，在边缘验证 设备与主机的连接，以及在验证与主机的连接时将目标地址插入到边缘设备的转发信息库中。 本文还公开了一种装置和逻辑。

公开(公告)号：US20140269407A1

公开(公告)日：2014-09-18

申请号：US13800419

申请日：2013-03-13

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Madhukar Anand ,  Hasmit Grover ,  Paul Wells

IPC: H04L12/56

CPC classification number: H04L45/02 ,  H04L45/28 ,  H04L45/58

Abstract: A link state information correction scheme is implemented by the present disclosure. In one embodiment, the correction scheme is implemented by a reload logic module that cooperates with link state protocol logic configured on a reload routing element (or routing element that has reloaded or hard restarted). The reload logic module is configured to receive a database descriptor message at a reload routing element, where the database descriptor message is received from a neighbor routing element during an adjacency formation. The reload logic module is also configured to determine whether the database descriptor message identifies a stale version of a link state advertisement (LSA), where the LSA is self-originated by the reload routing element. The reload logic module is also configured to generate a new version of the LSA during the adjacency formation.

Abstract translation: 通过本公开实现链路状态信息校正方案。 在一个实施例中，校正方案由重载逻辑模块实现，该重载逻辑模块与在重载路由元件（或重新加载或重新启动的路由元件）上配置的链路状态协议逻辑协同工作。 重载逻辑模块被配置为在重新加载路由元件处接收数据库描述符消息，其中在邻接形成期间从邻居路由元件接收数据库描述符消息。 重新加载逻辑模块还被配置为确定数据库描述符消息是否识别链路状态通告（LSA）的陈旧版本，其中LSA由重新加载路由元件自发。 重载逻辑模块还被配置为在邻接形成期间生成LSA的新版本。