公开(公告)号：US09819580B2

公开(公告)日：2017-11-14

申请号：US15095748

申请日：2016-04-11

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04L12/723 ,  H04L12/721 ,  H04L12/911 ,  H04L12/741 ,  H04L12/729

CPC classification number: H04L45/50 ,  H04L45/12 ,  H04L45/125 ,  H04L45/507 ,  H04L45/54 ,  H04L47/825 ,  H04L47/826 ,  H04L47/829

Abstract: A network element (NE) in a network, comprising a memory configured to store time-based traffic engineering (TE) information associated with network resource reservations on a link attached to the NE in a series of time intervals each having a predetermined start time and a predetermined end time, and a processor coupled to the memory and configured to reserve, at a first current time, a network resource for a temporal tunnel service (TTS) on the link to carry traffic during a scheduled time interval subsequent to the first current time, wherein the scheduled time interval comprises a scheduled start time and a scheduled end time, and update, at the first current time, the time-based TE information in the scheduled time interval according to the network resource reserved to produce a first updated TE information in the scheduled time interval.

公开(公告)号：US20160373336A1

公开(公告)日：2016-12-22

申请号：US14745683

申请日：2015-06-22

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04L12/751 ,  H04L29/06

CPC classification number: H04L45/02 ,  H04L41/12 ,  H04L45/04 ,  H04L69/22

Abstract: The system and method of the present disclosure relates to technology for a network system supporting multiple topology transparent zones (TTZs) on an edge node. TTZs have a topology including TTZ nodes consisting of edge nodes and internal nodes connected together by internal links. The edge nodes may also be connected to external nodes outside of the TTZ. The edge node is responsible for generating and distributing link state advertisements (LSAs) to generate virtual paths from the edge node to other edge nodes in each of the TTZs. Each TTZ sharing the edge node and each external node neighboring one of the other edge nodes of the TTZs is virtualized by distribution of the LSAs. However, the internal topology of each TTZ is concealed from each of the other TTZs sharing the edge node and from any neighboring external node connected to one of the other edge nodes.

Abstract translation: 本公开的系统和方法涉及在边缘节点上支持多个拓扑透明区域（TTZ）的网络系统的技术。 TTZ具有包括由边缘节点组成的TTZ节点和通过内部链路连接在一起的内部节点的拓扑。 边缘节点也可以连接到TTZ之外的外部节点。 边缘节点负责生成和分发链路状态通告（LSA），以生成从每个TTZ中的边缘节点到其他边缘节点的虚拟路径。 每个TTZ共享边缘节点和与TTZ的其他边缘节点相邻的每个外部节点通过LSA的分布进行虚拟化。 然而，每个TTZ的内部拓扑从共享边缘节点的每个其他TTZ和连接到其他边缘节点之一的任何相邻外部节点隐藏。

公开(公告)号：US20160315855A1

公开(公告)日：2016-10-27

申请号：US15095748

申请日：2016-04-11

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li

IPC: H04L12/723 ,  H04L12/26 ,  H04L12/721

CPC classification number: H04L45/50 ,  H04L45/12 ,  H04L45/125 ,  H04L45/507 ,  H04L45/54 ,  H04L47/825 ,  H04L47/826 ,  H04L47/829

Abstract: A network element (NE) in a network, comprising a memory configured to store time-based traffic engineering (TE) information associated with network resource reservations on a link attached to the NE in a series of time intervals each having a predetermined start time and a predetermined end time, and a processor coupled to the memory and configured to reserve, at a first current time, a network resource for a temporal tunnel service (TTS) on the link to carry traffic during a scheduled time interval subsequent to the first current time, wherein the scheduled time interval comprises a scheduled start time and a scheduled end time, and update, at the first current time, the time-based TE information in the scheduled time interval according to the network resource reserved to produce a first updated TE information in the scheduled time interval.

Abstract translation: 一种网络中的网元（NE），包括：存储器，被配置为在连接到所述网元的链路上以一系列时间间隔存储与网络资源预留相关联的基于时间的流量工程（TE）信息，每个时间间隔具有预定的开始时间， 以及处理器，其耦合到所述存储器并且被配置为在所述第一当前时间处为所述链路上的时间隧道服务（TTS）的网络资源预留以在所述第一电流之后的预定时间间隔期间承载流量 时间，其中所述预定时间间隔包括调度的开始时间和预定的结束时间，并且在所述第一当前时间根据所保留的所述网络资源来更新所述调度时间间隔中的基于时间的TE信息以产生第一更新TE 信息在预定的时间间隔。

公开(公告)号：US20160112265A1

公开(公告)日：2016-04-21

申请号：US14918172

申请日：2015-10-20

Applicant: Futurewei Technologies, Inc.

Inventor： Huaimo Chen ,  Renwei Li ,  Anil Kumar S N ,  Veerendranatha Reddy Vallem

IPC: H04L12/24 ,  H04L12/751

CPC classification number: H04L45/02

Abstract: A method of avoiding routing interruption during transition to a topology transparent zone (TTZ) including virtualizing a path from an edge router to another edge router within the TTZ in a first direction without removing original links, wherein the original links are links from the edge router to its neighboring routers within the TTZ, receiving, by the edge router within the TTZ, a router link state advertisement (LSA) from the another edge router within the TTZ while the original links remain in place, wherein the LSA comprises a path from the another edge router to the edge router in a second direction different from the first direction, and removing, by the edge router within the TTZ, the original links after the LSA has been received from the another edge router and the virtualization of the path is complete.

Abstract translation: 一种在转换到拓扑透明区域（TTZ）期间避免路由中断的方法，包括在不消除原始链路的情况下虚拟化从TTG内的边缘路由器到另一边缘路由器的路径，其中原始链路是来自边缘路由器的链路 到TTZ内的相邻路由器，由TTZ内的边缘路由器接收来自TTZ内的另一个边缘路由器的路由器链路状态通告（LSA），同时原始链路保持原位，其中LSA包括从 在与第一方向不同的第二方向上的边缘路由器的另一边缘路由器，并且在从另一边缘路由器接收到LSA之后，由TTZ内的边缘路由器去除原始链路，并且路径的虚拟化完成 。

公开(公告)号：US09160683B2

公开(公告)日：2015-10-13

申请号：US13931548

申请日：2013-06-28

Applicant: Futurewei Technologies, Inc.

Inventor： Lin Han ,  Renwei Li ,  Katherine Zhao

IPC: H04J3/08 ,  H04J3/14 ,  H04L12/28 ,  H04L12/927 ,  H04L12/913

CPC classification number: H04L47/806 ,  H04L47/724

Abstract: In a receiver provider edge (PE) router, a method for supporting protocol independent multicast source-specific mode (PIM-SSM) using multicast resource reservation protocol-traffic engineering (mRSVP-TE) comprising the steps of receiving a protocol independent multicast (PIM) join message, in response to receiving the PIM join message sending a path message to a source PE router, wherein the path message is a multicast resource reservation protocol-traffic engineering (mRSVP-TE) message, and sending the PIM join message to the source PE router, wherein the path message and the PIM join message trigger setup of a data multicast data tree (MDT), creating a PIM state, and receiving multicast data traffic via the data MDT using the PIM state.

Abstract translation: 在接收机提供商边缘（PE）路由器中，使用组播资源预留协议流量工程（mRSVP-TE）支持协议独立的组播源特定模式（PIM-SSM）的方法，包括以下步骤：接收协议独立组播 ）加入消息，响应于接收向源PE路由器发送路径消息的PIM加入消息，其中路径消息是组播资源预留协议流量工程（mRSVP-TE）消息，并且向PIM发送PIM加入消息 源PE路由器，其中路径消息和PIM加入消息触发数据组播数据树（MDT）的建立，创建PIM状态，并且通过使用PIM状态的数据MDT接收组播数据业务。

公开(公告)号：US09118564B2

公开(公告)日：2015-08-25

申请号：US13931597

申请日：2013-06-28

Applicant: Futurewei Technologies, Inc.

Inventor： Lin Han ,  Renwei Li ,  Katherine Zhao

IPC: H04L12/26 ,  H04L12/28 ,  H04L1/00 ,  H04L12/801 ,  H04L12/18

CPC classification number: H04L47/10 ,  H04L12/185

Abstract: In a source provider edge (PE) router, a method for supporting protocol independent multicast sparse-mode (PIM-SM) using multicast resource reservation protocol-traffic engineering (mRSVP-TE) comprising the steps of creating a protocol independent multicast (PIM) state, sending a first unicast data message to a rendezvous point (RP) PE router using the PIM state, wherein the first unicast data message is a PIM register message encapsulated as a unicast multiprotocol label switching (MPLS) packet, receiving a PIM join message from the RP PE router, wherein the PIM join message triggers creating a second PIM state, sending a second unicast data message to the RP PE router via a default multicast distribution tree (MDT) using the second PIM state, receiving a PIM register-stop message from the RP PE router, wherein the PIM register-stop message suspends sending the second unicast data message.

Abstract translation: 在源提供商边缘（PE）路由器中，使用组播资源预留协议流量工程（mRSVP-TE）支持协议独立的组播稀疏模式（PIM-SM）的方法，包括创建协议无关组播（PIM） 状态，使用PIM状态向聚集点（RP）PE路由器发送第一单播数据消息，其中所述第一单播数据消息是封装为单播多协议标签交换（MPLS）分组的PIM注册消息，接收PIM加入消息 从RP PE路由器，其中PIM加入消息触发创建第二PIM状态，通过使用第二PIM状态的默认组播分发树（MDT）向RP PE路由器发送第二单播数据消息，接收PIM注册停止 来自RP PE路由器的消息，其中PIM注册停止消息暂停发送第二单播数据消息。

公开(公告)号：US20140122683A1

公开(公告)日：2014-05-01

申请号：US14067704

申请日：2013-10-30

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Qianglin Quintin Zhao ,  Renwei Li ,  Lin Han ,  Katherine Zhao

IPC: H04L12/24

CPC classification number: H04L41/5054 ,  H04L41/12 ,  H04L45/02 ,  H04L45/42 ,  H04L45/64

Abstract: Embodiments are provided herein to enable single level network abstraction for a service across one or more domains. The embodiments use a single network ID to identify a service and a corresponding virtual network topology across any number of domains at a physical network. A virtual network topology can be abstracted for each service, based on the physical underlying network topology. A network controller determines, for a service, the virtual network topology within a physical network, and binds the service to the virtual network topology via a virtual network ID, which defines a single forwarding domain of the virtual network topology across the physical network. The virtual network ID is then indicated to the nodes of the virtual network topology, thus enabling the nodes to identify and forward traffic for the service, within the single forwarding domain, between end clients from edge to edge of the physical network.

Abstract translation: 本文提供了实现方式，以实现跨一个或多个域的服务的单级网络抽象。 这些实施例使用单个网络ID来识别物理网络上的任何数量的域上的服务和对应的虚拟网络拓扑。 可以基于物理底层网络拓扑为每个服务抽象虚拟网络拓扑。 网络控制器为物理网络中的虚拟网络拓扑确定服务，并通过虚拟网络ID将服务绑定到虚拟网络拓扑，该虚拟网络ID定义跨物理网络的虚拟网络拓扑的单个转发域。 然后将虚拟网络ID指示到虚拟网络拓扑的节点，从而使节点能够在单个转发域内，在从物理网络的边缘到边缘的终端客户端之间识别和转发业务的流量。

公开(公告)号：US20140119367A1

公开(公告)日：2014-05-01

申请号：US14043048

申请日：2013-10-01

Applicant: Futurewei Technologies, Inc.

Inventor： Lin Han ,  Renwei Li ,  Katherine Zhao ,  Qianglin Quintin Zhao

IPC: H04L12/46

CPC classification number: H04L12/4633 ,  H04L45/38 ,  H04L2212/00

Abstract: An ingress node in a Software Defined Network (SDN) comprising a receiver for receiving a data packet, a processor coupled to the receiver and further configured to obtain the data packet from the receiver in a transport protocol agnostic manner, and encapsulate the data packet in an SDN packet header, wherein the packet header comprises SDN flow-specific information provided by an SDN controller, and a transmitter coupled to the processor and further configured to transmit the encapsulated data packet across a single SDN toward an egress node in the SDN.

Abstract translation: 软件定义网络（SDN）中的入口节点包括用于接收数据分组的接收机，耦合到所述接收机的处理器，并且还被配置为以传输协议无关的方式从所述接收机获得所述数据分组，并将所述数据分组封装在 SDN分组报头，其中所述分组报头包括由SDN控制器提供的SDN特定于流量的信息，以及耦合到所述处理器的发送器，并且还被配置为通过单个SDN向所述SDN中的出口节点发送所述封装数据分组。

公开(公告)号：US20130336191A1

公开(公告)日：2013-12-19

申请号：US13918358

申请日：2013-06-14

Applicant: Futurewei Technologies, Inc.

Inventor： Katherine Zhao ,  Ying Chen ,  Qianglin Quintin Zhao ,  Tao Zhou ,  Renwei Li ,  Lin Han

IPC: H04L12/18

CPC classification number: H04L41/0654 ,  H04L12/1863 ,  H04L45/16 ,  H04L45/22 ,  H04L45/28 ,  H04L45/50 ,  H04L47/15 ,  H04L47/724

Abstract: An apparatus comprising a memory, and a processor coupled to the memory and configured to transmit a multicast Resource Reservation Protocol—Traffic Engineering (mRSVP-TE) path request (PATH) message upstream, wherein the PATH message requests reservation of a backup Label Switched Path (LSP) to protect an active LSP configured to transmit multicast data. The disclosure also includes a computer program product comprising computer executable instructions stored on a non-transitory computer readable medium such that when executed by a processor cause a network element (NE) to receive a multicast PATH message from a downstream node, wherein the NE acts as a Point of Local Repair (PLR) along an active LSP, wherein the active LSP is configured to transmit multicast data, and wherein the PATH message requests reservation of a backup LSP to protect the active LSP.

Abstract translation: 一种包括存储器和处理器的装置，所述处理器耦合到所述存储器并且被配置为在上游传输多播资源预留协议 - 流量工程（mRSVP-TE）路径请求（PATH））消息，其中所述PATH消息请求备份标签交换路径 （LSP），保护被配置为发送组播数据的活动LSP。 本公开还包括计算机程序产品，其包括存储在非暂时性计算机可读介质上的计算机可执行指令，使得当由处理器执行时，使得网元（NE）从下游节点接收多播PATH消息，其中，NE 作为沿主动LSP的本地修复点（PLR），其中活动LSP被配置为传送多播数据，并且其中PATH消息请求预留备用LSP以保护活动LSP。

公开(公告)号：US10404810B2

公开(公告)日：2019-09-03

申请号：US15628410

申请日：2017-06-20

Applicant: Futurewei Technologies, Inc.

Inventor： Renwei Li ,  Kiran Makhijani

IPC: H04L29/08

Abstract: Systems and methods for providing a session layer connection between two or more network endpoints. Session layer connections created and maintained using embodiments of the present disclosure use endpoint identifiers (EIDs) and allow for session layer continuity when a lower-layer connection is broken because of network failures or the movement of an endpoint from one network connection to another.