公开(公告)号：US09313090B2

公开(公告)日：2016-04-12

申请号：US13925097

申请日：2013-06-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Fei Chen ,  Tao Bai ,  Lei Chen

IPC: H04L12/24 ,  H04L12/26 ,  H04L12/46 ,  H04L12/703

CPC classification number: H04L41/0654 ,  H04L12/4633 ,  H04L43/0811 ,  H04L45/28

Abstract: The embodiments of the present invention provide a tunnel fault detection method and a traffic engineering (TE) node. The method includes: receiving, by a traffic engineering TE node, a link fault report packet; determining, by the node, a faulty link in which a fault occurs according to the link fault report packet; detecting, by the node, whether one or more tunnels which use the node as an ingress node and pass through the faulty link exist; and identifying the tunnels as faulty tunnels if the one or more tunnels which use the node as the ingress node and pass through the faulty link exist. In the embodiments of the present invention, the TE node can detect all faulty tunnels at a time, and it is not necessary to wait until the fault notification based on each tunnel is received and then the faulty tunnel is identified one by one.

Abstract translation: 本发明的实施例提供一种隧道故障检测方法和流量工程（TE）节点。 该方法包括：由流量工程TE节点接收链路故障报告分组; 由所述节点根据所述链路故障报告分组确定故障发生的故障链路; 由节点检测是否存在使用节点作为入节点并通过故障链路的一个或多个隧道; 并且如果存在使用节点作为入口节点并通过故障链路的一个或多个隧道，则将隧道识别为故障隧道。 在本发明的实施例中，TE节点可以一次检测到所有故障的隧道，并且不需要等待直到基于每个隧道的故障通知被接收到，然后逐个识别故障隧道。

公开(公告)号：US09019952B2

公开(公告)日：2015-04-28

申请号：US13735477

申请日：2013-01-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Bai ,  Yunfu Yu ,  Gang Chen ,  Shuxue Fan ,  Hui Liu

IPC: H04L12/28 ,  H04L12/24 ,  H04L12/18 ,  H04L12/721 ,  H04L12/703

CPC classification number: H04L41/0654 ,  H04L12/18 ,  H04L12/1868 ,  H04L45/06 ,  H04L45/28

Abstract: Embodiments of the present invention provide a method and an apparatus for forwarding multicast traffic. The method includes: receiving a third multicast join message; in response to the third multicast join message, sending a first multicast join message to a first upstream router, and establishing an active path; in response to the third multicast join message, sending a second multicast join message to a second upstream router, and establishing a standby path; and sending multicast traffic to the multicast receiver through the active path, where the standby path does not forward the multicast traffic. In the foregoing embodiments, the standby path that does not forward the multicast traffic is established beforehand, so that when a fault occurs in the active path, the standby path established beforehand can be used to forward the multicast traffic.

Abstract translation: 本发明的实施例提供了一种用于转发多播业务的方法和装置。 该方法包括：接收第三组播加入消息; 响应于所述第三组播加入消息，向第一上游路由器发送第一组播加入消息，并建立活动路径; 响应于所述第三组播加入消息，向第二上游路由器发送第二组播加入消息，并建立备用路径; 并通过主用路径向组播接收者发送组播流量，备用路径不转发组播流量。 在上述实施例中，预先建立不转发组播流量的备用路径，使得当在活动路径中发生故障时，预先建立的备用路径可以用于转发多播业务。

公开(公告)号：US20130121142A1

公开(公告)日：2013-05-16

申请号：US13735477

申请日：2013-01-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Bai ,  Yunfu Yu ,  Gang Chen ,  Shuxue Fan ,  Hui Liu

IPC: H04L12/24 ,  H04L12/18

CPC classification number: H04L41/0654 ,  H04L12/18 ,  H04L12/1868 ,  H04L45/06 ,  H04L45/28

Abstract: Embodiments of the present invention provide a method and an apparatus for forwarding multicast traffic. The method includes: receiving a third multicast join message; in response to the third multicast join message, sending a first multicast join message to a first upstream router, and establishing an active path; in response to the third multicast join message, sending a second multicast join message to a second upstream router, and establishing a standby path; and sending multicast traffic to the multicast receiver through the active path, where the standby path does not forward the multicast traffic. In the foregoing embodiments, the standby path that does not forward the multicast traffic is established beforehand, so that when a fault occurs in the active path, the standby path established beforehand can be used to forward the multicast traffic.

Abstract translation: 本发明的实施例提供了一种用于转发多播业务的方法和装置。 该方法包括：接收第三组播加入消息; 响应于所述第三组播加入消息，向第一上游路由器发送第一组播加入消息，并建立活动路径; 响应于所述第三组播加入消息，向第二上游路由器发送第二组播加入消息，并建立备用路径; 并通过主用路径向组播接收者发送组播流量，备用路径不转发组播流量。 在上述实施例中，预先建立不转发组播流量的备用路径，使得当在活动路径中发生故障时，预先建立的备用路径可用于转发多播业务。

公开(公告)号：US09998357B2

公开(公告)日：2018-06-12

申请号：US14940496

申请日：2015-11-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Peng Gao ,  Zhenhai Li ,  Zhenxiao Liu ,  Tao Bai

IPC: H04L12/707 ,  H04L12/803 ,  H04L12/743 ,  H04L12/813 ,  H04L29/06

CPC classification number: H04L45/24 ,  H04L45/7453 ,  H04L47/125 ,  H04L47/20 ,  H04L69/22

Abstract: Embodiments of the present application disclose a multipath transmission based packet traffic control method, including: monitoring egress traffic of a data packet set sent by a source node; determining, according to a preconfigured mapping relationship between traffic ranges and forwarding paths, a target forwarding path set corresponding to the egress traffic of the data packet set, and a weight parameter of the egress traffic borne on each target forwarding path in the target forwarding path set; and distributing the data packet set according to the weight parameter, and transferring the data packet set to a destination node by the target forwarding path set. The embodiments of the present application further disclose a traffic control apparatus. By using the present application, centralized policing and classification can be performed on user traffic in a multipath transmission scenario.

公开(公告)号：US20150304218A1

公开(公告)日：2015-10-22

申请号：US14792294

申请日：2015-07-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jun Wang ,  Tao Bai

IPC: H04L12/741 ,  H04L12/24

CPC classification number: H04L45/74 ,  H04L12/4641 ,  H04L12/66 ,  H04L41/0813 ,  H04L41/12 ,  H04L45/02 ,  H04L45/22 ,  H04L45/28 ,  H04L45/42 ,  H04L45/64 ,  Y02D30/30

Abstract: The present invention provides a control channel establishing method, a forwarding point, and a controller. The method includes: sending, by a first FP, topology information of the first FP to a second FP by using the LLDP; receiving, by the first FP, first routing information that is sent by the controller and is used by the first FP to reach the controller, where the first routing information is generated by the controller according to the topology information of the first FP; and establishing, by the first FP, a second control channel with the controller according to the first routing information. The first FP does not need to run the IGP protocol, thereby avoiding that the first FP maintains an IGP neighbor relationship; moreover, the first FP does not need to store routing information for reaching another FP, which helps save storage resources and helps improve forwarding performance.

Abstract translation: 本发明提供一种控制信道建立方法，转发点和控制器。 该方法包括：通过使用LLDP将第一FP的拓扑信息发送到第二FP; 通过第一FP接收由控制器发送并由第一FP使用的第一路由信息到达控制器，其中控制器根据第一FP的拓扑信息生成第一路由信息; 以及通过所述第一FP建立与所述控制器根据所述第一路由信息的第二控制信道。 第一个FP不需要运行IGP协议，从而避免了第一个FP维护IGP邻居关系; 此外，第一个FP不需要存储用于到达另一个FP的路由信息​​，这有助于节省存储资源并有助于提高转发性能。