公开(公告)号：US20190253276A1

公开(公告)日：2019-08-15

申请号：US16391703

申请日：2019-04-23

Applicant: Cisco Technology, Inc.

Inventor： Gaurav Badoni ,  Dhananjaya Rao ,  Hasmit Grover ,  Senthil Kenchiah ,  Vrushali Ashtaputre

IPC: H04L12/46 ,  H04L12/715 ,  H04L12/24

CPC classification number: H04L12/4641 ,  H04L41/0813 ,  H04L41/0856 ,  H04L45/04 ,  H04L45/28 ,  H04L45/42

Abstract: In one embodiment, an authoritative edge device (AED)-server in a computer network maintains assignment of an active AED for a particular virtual local area network (VLAN), and in response to a triggered re-assignment, sends an AED change request identifying an old active AED for the particular VLAN and a new active AED for the particular VLAN (e.g., and/or corresponding backups). In response to receiving the change request, the old active AED ceases forwarding of traffic for the particular VLAN and transmits a relinquishment confirmation into the network. Also, in response to receiving the change request and the relinquishment confirmation from the old active AED, the new active AED assumes responsibility for traffic forwarding for the particular VLAN and transmits an activation confirmation into the network. The change request is then deemed completed by the AED-sever upon receipt of both the relinquishment confirmation and the activation confirmation.

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：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：US20160127320A1

公开(公告)日：2016-05-05

申请号：US14531187

申请日：2014-11-03

Applicant: Cisco Technology, Inc.

Inventor： Gaurav Badoni ,  Dhananjaya Rao

IPC: H04L29/06

CPC classification number: H04L63/0272 ,  H04L12/4641 ,  H04L63/0281 ,  H04L63/162

Abstract: A first provider edge network device that is configured in a multi-homed virtual private network for a data center in which there are one or more peer edge network devices including a second edge network device, receives from the second edge network device a message indicating that a link for a particular Ethernet segment of the second edge network device in the data center is down. Information is stored at the first edge network device indicating state of links for Ethernet segments associated with each of the one or more other edge network devices at the data center. The first edge network device forwards of traffic for the particular Ethernet segment locally on Ethernet segments in the data center on behalf of the second edge network device. The proxy forwarding is performed for traffic for the particular Ethernet segment that originates from the data center, that is, for “same-site” traffic.

Abstract translation: 配置在数据中心的多归属虚拟专用网络中的第一提供商边缘网络设备，其中存在包括第二边缘网络设备的一个或多个对等边缘网络设备，从第二边缘网络设备接收指示 在数据中心的第二边缘网络设备的特定以太网段的链路被关闭。 信息被存储在第一边缘网络设备处，指示与数据中心处的一个或多个其他边缘网络设备中的每一个相关联的以太网段的链路的状态。 第一边缘网络设备代表第二边缘网络设备在数据中心的以太网段本地转发特定以太网段的流量。 为来自数据中心的特定以太网段的流量执行代理转发，即“同一站点”流量。