公开(公告)号：US09331941B2

公开(公告)日：2016-05-03

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 ,  H04L12/803 ,  H04L12/721 ,  H04L12/715

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。

公开(公告)号：US11991069B2

公开(公告)日：2024-05-21

申请号：US18090264

申请日：2022-12-28

Applicant: Cisco Technology, Inc.

Inventor： Hongbo Xia ,  Xiaorong Wang ,  Jianda Liu ,  Yicheng Liu ,  Jiayi You

IPC: H04L45/00 ,  H04L45/12 ,  H04L45/24

CPC classification number: H04L45/245 ,  H04L45/123 ,  H04L45/38

Abstract: Techniques and architecture are described grouping various sources of traffic within a network into grouping fields and assigning each combination of grouping field values an aggregate identification (ID). A first hop edge router may receive a packet and search a mapping table for a corresponding aggregate ID for the combination of grouping field values within the mapping table. If not found, the first hop edge router may assign a corresponding aggregate ID for the combination of grouping field values and store the new aggregate ID for the combination of grouping field values in the mapping table. The first hop edge router may forward the packet on through the network with the aggregate ID embedded in metadata. Routers within the network may measure and aggregate flow metrics of the packet within the network based on the aggregate ID and provide the measurements to the network controller.

公开(公告)号：US11516104B2

公开(公告)日：2022-11-29

申请号：US16988920

申请日：2020-08-10

Applicant: Cisco Technology, Inc.

Inventor： Jianda Liu ,  Xiaorong Wang ,  Shen Yong Qing ,  Olivier Patrick Jean Pelerin ,  Frederic René Philippe Detienne ,  Pritam Baruah ,  Ruchir Jain

IPC: H04L12/26 ,  H04L43/10 ,  H04L43/062

Abstract: In one embodiment, a method includes receiving, by a network orchestrator, trace parameters from a user device. The method also includes determining, by the network orchestrator, to initiate a network path trace for the application, generating, by the network orchestrator, a filter policy for the network path trace using the trace parameters, and allocating, by the network orchestrator, a trace identification to the network path trace. The method also includes initiating, by the network orchestrator, the network path trace within a network by communicating the filter policy and the trace identification to a first node of the network and receiving, by the network orchestrator, network path trace data from a plurality of nodes of the network. The method further includes generating, by the network orchestrator, a trace report for the application using the network path trace data.

公开(公告)号：US20220263761A1

公开(公告)日：2022-08-18

申请号：US17734566

申请日：2022-05-02

Applicant: Cisco Technology, Inc.

Inventor： Hongbo Xia ,  Xiaorong Wang ,  Yu Zhang ,  Changhong Shen

IPC: H04L47/22 ,  H04L47/24 ,  H04L47/34

Abstract: In one embodiment, a method includes determining, by a first network component, a sender shaper drop value based on the following: a maximum sequence number; a minimum sequence number; and a sender sequence counter number associated with the first network component. The method also includes determining, by the first network component, a wide area network (WAN) link drop value based on the sender sequence counter number associated with the first network component and a receiver sequence counter number associated with a second network component. The method further includes determining, by the first network component, whether to adjust a sender shaper rate based on the sender shaper drop value and the WAN link drop value.

公开(公告)号：US20210385166A1

公开(公告)日：2021-12-09

申请号：US16891624

申请日：2020-06-03

Applicant: Cisco Technology, Inc.

Inventor： Hongbo Xia ,  Xiaorong Wang ,  Yu Zhang ,  Changhong Shen

IPC: H04L12/815 ,  H04L12/801 ,  H04L12/851

Abstract: In one embodiment, a method includes determining, by a first network component, a sender shaper drop value based on the following: a maximum sequence number; a minimum sequence number; and a sender sequence counter number associated with the first network component. The method also includes determining, by the first network component, a wide area network (WAN) link drop value based on the sender sequence counter number associated with the first network component and a receiver sequence counter number associated with a second network component. The method further includes determining, by the first network component, whether to adjust a sender shaper rate based on the sender shaper drop value and the WAN link drop value.

公开(公告)号：US10985942B2

公开(公告)日：2021-04-20

申请号：US16557065

申请日：2019-08-30

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/753 ,  H04L12/781 ,  H04L12/761 ,  H04L12/44 ,  H04L12/46

Abstract: Methods and network devices are disclosed for multicast traffic steering in a communications network. In one embodiment, a method includes receiving, at a node in a network, a multicast message comprising an incoming message bit array and a tree identifier value. The embodiment further includes selecting a bit indexed forwarding table stored at the node and corresponding to the tree identifier value, accessing within the selected forwarding table an entry corresponding to an intended destination node for the message, and forwarding, to a neighboring node identified in the accessed entry, a copy of the message comprising a forwarded message bit array in place of the incoming message bit array. An embodiment of a network device includes one or more network interfaces and a processor adapted to perform steps of the method.

公开(公告)号：US20190386848A1

公开(公告)日：2019-12-19

申请号：US16557065

申请日：2019-08-30

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/44

Abstract: Methods and network devices are disclosed for multicast traffic steering in a communications network. In one embodiment, a method includes receiving, at a node in a network, a multicast message comprising an incoming message bit array and a tree identifier value. The embodiment further includes selecting a bit indexed forwarding table stored at the node and corresponding to the tree identifier value, accessing within the selected forwarding table an entry corresponding to an intended destination node for the message, and forwarding, to a neighboring node identified in the accessed entry, a copy of the message comprising a forwarded message bit array in place of the incoming message bit array. An embodiment of a network device includes one or more network interfaces and a processor adapted to perform steps of the method.

公开(公告)号：US10432425B2

公开(公告)日：2019-10-01

申请号：US15487626

申请日：2017-04-14

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/753 ,  H04L12/781 ,  H04L12/761 ,  H04L12/44 ,  H04L12/46

Abstract: Methods and network devices are disclosed for internet protocol (IP) based encapsulation in bit indexed explicit replication (BIER) forwarding. In one embodiment, a method includes receiving a multicast message comprising an inner IP header, an intervening header, and an outer IP header. The embodiment further includes accessing a message bit array stored in the intervening header, retrieving an IP address from an entry in a bit indexed forwarding table, replacing an IP destination address in the outer IP header of a copy of the multicast message with the retrieved IP address, and sending the copy of the multicast message toward a second node in the network, where the retrieved IP address is assigned to the second node. An embodiment of a network device includes a processor operably coupled to a plurality of storage locations and to one or more network interfaces and adapted to perform steps of the method.

公开(公告)号：US20180287935A1

公开(公告)日：2018-10-04

申请号：US15487626

申请日：2017-04-14

Applicant: Cisco Technology, Inc.

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

IPC: H04L12/753 ,  H04L12/44 ,  H04L12/761

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

Abstract: Methods and network devices are disclosed for internet protocol (IP) based encapsulation in bit indexed explicit replication (BIER) forwarding. In one embodiment, a method includes receiving a multicast message comprising an inner IP header, an intervening header, and an outer IP header. The embodiment further includes accessing a message bit array stored in the intervening header, retrieving an IP address from an entry in a bit indexed forwarding table, replacing an IP destination address in the outer IP header of a copy of the multicast message with the retrieved IP address, and sending the copy of the multicast message toward a second node in the network, where the retrieved IP address is assigned to the second node. An embodiment of a network device includes a processor operably coupled to a plurality of storage locations and to one or more network interfaces and adapted to perform steps of the method.

公开(公告)号：US12021746B2

公开(公告)日：2024-06-25

申请号：US17674453

申请日：2022-02-17

Applicant: Cisco Technology, Inc.

Inventor： Lianxiang Wang ,  Zhiyong Fang ,  Xiaorong Wang ,  Bin Shi ,  Jianda Liu ,  Yunpeng Zhang

IPC: H04L45/586 ,  H04L45/42 ,  H04L45/50 ,  H04L45/745

CPC classification number: H04L45/586 ,  H04L45/42 ,  H04L45/507 ,  H04L45/745

Abstract: According to an embodiment, a node comprises one or more processors operable to execute instructions to cause the node to perform operations that comprise receiving a packet from a first node associated with an SD-WAN domain. The packet comprises a header indicating a TLOC associated with a second node to send the packet, the second node associated with an SR domain. The operations comprise determining that the TLOC corresponds to a virtual TLOC used in the SD-WAN domain to identify the second node that is in the SR domain and, in response, determining a second node identifier used in the SR domain to identify the second node. The operations further comprise preparing the packet to be communicated via the SR domain. Preparing the packet comprises including the second node identifier in the packet. The operations further comprise sending the packet comprising the second node identifier to the second node.