公开(公告)号：US20190036729A1

公开(公告)日：2019-01-31

申请号：US15662556

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Priyanka Warade ,  Gaurav Badoni ,  Suresh Pasupula ,  Senthil Kenchiah

IPC: H04L12/28 ,  H04L12/54 ,  H04L12/46 ,  H04L12/705 ,  H04L12/721

CPC classification number: H04L12/2854 ,  H04L12/462 ,  H04L12/4641 ,  H04L12/5691 ,  H04L45/18 ,  H04L45/48 ,  H04L45/66

Abstract: Methods, devices, and computer-readable medium for preventing broadcast looping during a site merge are described herein. An example method can include detecting a site merge between a plurality of layer 2 (L2) networks using a spanning tree protocol (STP), blocking a data traffic port connecting the L2 networks in response to detecting the site merge, and performing an STP-Ethernet virtual private network (EVPN) handshake. The STP-EVPN handshake can include changing a root bridge in one of the L2 networks. Thereafter, the method can include unblocking the data traffic port connecting the L2 networks. In other words, the data traffic port connecting the L2 networks can be unblocked after changing the root bridge in the one of the L2 networks.

公开(公告)号：US11063784B2

公开(公告)日：2021-07-13

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: H04L12/24 ,  H04L12/46 ,  H04L12/715 ,  H04L12/703 ,  H04L12/717

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：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：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：US10432420B2

公开(公告)日：2019-10-01

申请号：US15662556

申请日：2017-07-28

Applicant: Cisco Technology, Inc.

Inventor： Priyanka Warade ,  Gaurav Badoni ,  Suresh Pasupula ,  Senthil Kenchiah

IPC: H04L12/28 ,  H04L12/54 ,  H04L12/46 ,  H04L12/705 ,  H04L12/721

Abstract: Methods, devices, and computer-readable medium for preventing broadcast looping during a site merge are described herein. An example method can include detecting a site merge between a plurality of layer 2 (L2) networks using a spanning tree protocol (STP), blocking a data traffic port connecting the L2 networks in response to detecting the site merge, and performing an STP-Ethernet virtual private network (EVPN) handshake. The STP-EVPN handshake can include changing a root bridge in one of the L2 networks. Thereafter, the method can include unblocking the data traffic port connecting the L2 networks. In other words, the data traffic port connecting the L2 networks can be unblocked after changing the root bridge in the one of the L2 networks.

公开(公告)号：US10313155B2

公开(公告)日：2019-06-04

申请号：US13939667

申请日：2013-07-11

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/24 ,  H04L12/46 ,  H04L12/715 ,  H04L12/703 ,  H04L12/717

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：US20150019697A1

公开(公告)日：2015-01-15

申请号：US13939667

申请日：2013-07-11

Applicant: Cisco Technology, Inc.

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

IPC: 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.

Abstract translation: 在一个实施例中，计算机网络中的授权边缘设备（AED） - 服务器维护对于特定虚拟局域网（VLAN）的活动AED的分配，并且响应于触发的重新分配，发送AED改变请求标识 用于特定VLAN的旧活动AED和特定VLAN的新活动AED（例如和/或相应的备份）。 响应于接收到更改请求，旧的活动AED停止转发特定VLAN的流量，并将放弃确认发送到网络。 此外，响应于从旧的活动AED接收到更改请求和放弃确认，新的活动AED承担特定VLAN的流量转发的责任，并将激活确认发送到网络中。 然后，AED-sever在收到放弃确认和激活确认之后，认为完成了更改请求。

公开(公告)号：US20140307541A1

公开(公告)日：2014-10-16

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。