公开(公告)号：US11863427B2

公开(公告)日：2024-01-02

申请号：US17808376

申请日：2022-06-23

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Lianxiang Wang ,  Yicheng Liu ,  Xiaorong Wang ,  Pan Wu

IPC: H04L12/28 ,  H04L45/16 ,  H04L12/18 ,  H04L45/64 ,  H04L45/02

CPC classification number: H04L45/16 ,  H04L12/185 ,  H04L45/02 ,  H04L45/64

Abstract: Systems and methods provide for enabling multicast-based performance routing and policy controls for software-defined networking in a wide area network deployment including a multicast application-route policy based on sources, groups, receivers, dynamic application-route policy path selection from multicast replicators, and application-route SLA switchover across paths and multicast replicators based on SD-WAN multicast routing architecture; and dynamically selecting SD-WAN multicast replicators based on policies for replication including allowed multicast groups, geographic location, bandwidth indications, system load, and performance, and switching over dynamically across multicast replicators based real-time multicast replicator status updates.

公开(公告)号：US20220393965A1

公开(公告)日：2022-12-08

申请号：US17808376

申请日：2022-06-23

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Lianxiang Wang ,  Yicheng Liu ,  Xiaorong Wang ,  Pan Wu

IPC: H04L45/16 ,  H04L12/18 ,  H04L45/64 ,  H04L45/02

Abstract: Systems and methods provide for enabling multicast-based performance routing and policy controls for software-defined networking in a wide area network deployment including a multicast application-route policy based on sources, groups, receivers, dynamic application-route policy path selection from multicast replicators, and application-route SLA switchover across paths and multicast replicators based on SD-WAN multicast routing architecture; and dynamically selecting SD-WAN multicast replicators based on policies for replication including allowed multicast groups, geographic location, bandwidth indications, system load, and performance, and switching over dynamically across multicast replicators based real-time multicast replicator status updates.

公开(公告)号：US11071005B2

公开(公告)日：2021-07-20

申请号：US16666904

申请日：2019-10-29

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Yu Zhang ,  Xiaorong Wang ,  Pu Duan

IPC: H04W28/02 ,  H04L12/725 ,  H04L12/715 ,  H04L12/851 ,  H04W36/30 ,  H04L12/801 ,  H04L12/24

Abstract: According to some embodiments, a method performed by a software defined wide area network (SD-WAN) controller in a SD-WAN network comprising a plurality of aggregation edge routers and a plurality of branch edge routers comprises the following steps. The method comprises: receiving, from each of the plurality of branch edge routers, a transmit location (TLOC) publication comprising a quality of service (QoS) attribute of one or more TLOCs configured on the branch edge router; determining a QoS policy based on the received TLOC publications; transmitting the QoS policy to the plurality of aggregation edge routers; receiving, from a branch edge router of the plurality of branch edge routers, a first congestion indication indicating that bandwidth utilization on a wide area network (WAN) interface of the branch edge router exceeds a first threshold; determining an updated QoS policy based on the received TLOC publications and the first congestion indication to reduce congestion at the branch edge router; and transmitting the updated QoS policy to the plurality of aggregation edge routers.

公开(公告)号：US20210160169A1

公开(公告)日：2021-05-27

申请号：US16854328

申请日：2020-04-21

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Lianxiang Wang ,  Yicheng Liu ,  Xiaorong Wang ,  Pan Wu

IPC: H04L12/761 ,  H04L12/751 ,  H04L12/715 ,  H04L12/18

Abstract: Systems and methods provide for enabling multicast-based performance routing and policy controls for software-defined networking in a wide area network deployment including a multicast application-route policy based on sources, groups, receivers, dynamic application-route policy path selection from multicast replicators, and application-route SLA switchover across paths and multicast replicators based on SD-WAN multicast routing architecture; and dynamically selecting SD-WAN multicast replicators based on policies for replication including allowed multicast groups, geographic location, bandwidth indications, system load, and performance, and switching over dynamically across multicast replicators based real-time multicast replicator status updates.

公开(公告)号：US20240064103A1

公开(公告)日：2024-02-22

申请号：US17977953

申请日：2022-10-31

Applicant: Cisco Technology, Inc.

Inventor： Jianda Liu ,  Xiaorong Wang ,  Yicheng Liu ,  Hongbo Xia ,  Wei Zhou

IPC: H04L47/215 ,  H04L43/0876

CPC classification number: H04L47/215 ,  H04L43/0876

Abstract: This disclosure describes techniques and mechanisms for intelligently sampling packet flows within a network. The techniques enable the sampling of a limited set of packet flows that show greatest amount of information about the network from the packet flows in order to provide the greatest insight on application performance, network packet, and critical events within the network. Additionally, the techniques provide configurable parameters, such that the techniques are customizable for each user's network.

公开(公告)号：US11411857B2

公开(公告)日：2022-08-09

申请号：US16854328

申请日：2020-04-21

Applicant: Cisco Technology, Inc.

Inventor： Changhong Shen ,  Lianxiang Wang ,  Yicheng Liu ,  Xiaorong Wang ,  Pan Wu

IPC: H04L12/28 ,  H04L45/16 ,  H04L12/18 ,  H04L45/64 ,  H04L45/02

Abstract: Systems and methods provide for enabling multicast-based performance routing and policy controls for software-defined networking in a wide area network deployment including a multicast application-route policy based on sources, groups, receivers, dynamic application-route policy path selection from multicast replicators, and application-route SLA switchover across paths and multicast replicators based on SD-WAN multicast routing architecture; and dynamically selecting SD-WAN multicast replicators based on policies for replication including allowed multicast groups, geographic location, bandwidth indications, system load, and performance, and switching over dynamically across multicast replicators based real-time multicast replicator status updates.

公开(公告)号：US20180287934A1

公开(公告)日：2018-10-04

申请号：US15474583

申请日：2017-03-30

Applicant: Cisco Technology, Inc.

Inventor： Xiaorong Wang ,  Yicheng Liu ,  Lianxiang Wang ,  Fang Yang ,  Gaofeng Tao ,  Ijsbrand Wijnands

IPC: H04L12/753 ,  H04L12/761

CPC classification number: H04L12/44 ,  H04L12/4625 ,  H04L12/4633 ,  H04L2212/00

Abstract: Methods and network devices are disclosed for multicast traffic steering in a communications network. In one embodiment, a method includes generating a first tree connecting a source node for a multicast flow through a communications network to each of multiple destination nodes for the multicast flow. The communications network is configured to forward a multicast message based on bit values in a message bit array carried by the message, and the first tree comprises a first set of unicast paths from the source node to the destination nodes. The method further includes allocating a first tree identifier to the first tree and communicating the first tree identifier and associated forwarding information to each of multiple forwarding nodes within the communications network. An embodiment of a network device includes a processor operably coupled to one or more network interfaces and adapted to perform steps of the method.

公开(公告)号：US09755971B2

公开(公告)日：2017-09-05

申请号：US15042222

申请日：2016-02-12

Applicant: Cisco Technology, Inc.

Inventor： Xiaorong Wang ,  Dapeng Liu ,  Hunan Cao ,  Hongbo Xia

IPC: H04L12/741 ,  H04L12/803 ,  H04L12/721 ,  H04L12/715 ,  H04L12/46 ,  H04L12/723 ,  H04L12/813

CPC classification number: H04L45/745 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/38 ,  H04L45/50 ,  H04L45/74 ,  H04L47/125 ,  H04L47/20

Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.

公开(公告)号：US20160164782A1

公开(公告)日：2016-06-09

申请号：US15042222

申请日：2016-02-12

Applicant: Cisco Technology, Inc.

Inventor： Xiaorong Wang ,  Dapeng Liu ,  Hunan Cao ,  Hongbo Xia

IPC: H04L12/741 ,  H04L12/721 ,  H04L12/723 ,  H04L12/46 ,  H04L12/813 ,  H04L12/715 ,  H04L12/803

CPC classification number: H04L45/745 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/38 ,  H04L45/50 ,  H04L45/74 ,  H04L47/125 ,  H04L47/20

Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.

公开(公告)号：US20150043348A1

公开(公告)日：2015-02-12

申请号：US13964244

申请日：2013-08-12

Applicant: Cisco Technology, Inc.

Inventor： Xiaorong Wang ,  Dapeng Liu ,  Hunan Cao ,  Hongbo Xia

IPC: H04L12/741 ,  H04L12/28 ,  H04L12/803

CPC classification number: H04L45/745 ,  H04L12/4633 ,  H04L45/04 ,  H04L45/38 ,  H04L45/50 ,  H04L45/74 ,  H04L47/125 ,  H04L47/20

Abstract: In response to receiving one or more packets from an interface, an anchoring border router classifies the traffic flow and either transmits the packets based upon the routing control table as usual, or determines that the packets of the traffic flow are to be forwarded to a forwarding border router. Upon determining that the packets are to be forwarded, the packets are encapsulated with a routing encapsulation key corresponding to a routing path and are forwarded from the anchoring border router to the forwarding border router via a routing encapsulation tunnel. When a forwarding border router receives the redirected packets over the routing encapsulation tunnel, the forwarding border router removes the routing encapsulation key from the packets of the traffic flow and transmits the packets via a routing path corresponding to the routing encapsulation key.

Abstract translation: 响应于从接口接收到一个或多个分组，锚定边界路由器对业务流进行分类，并根据路由控制表照常发送分组，或者确定业务流的分组将被转发到转发 边界路由器。 在确定要转发数据包时，将使用对应于路由路由的路由封装密钥封装数据包，并通过路由封装隧道从锚定边界路由器转发到转发边界路由器。 当转发边界路由器通过路由封装隧道接收到重定向报文时，转发边界路由器从业务流分组中删除路由封装密钥，并通过与路由封装密钥相对应的路由路径发送报文。