公开(公告)号：US09634867B2

公开(公告)日：2017-04-25

申请号：US14702503

申请日：2015-05-01

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Linda Dunbar ,  Hong Zhang

IPC: H04L12/64

CPC classification number: H04L45/12 ,  H04L12/6418 ,  H04L41/12

Abstract: A method implemented by a path computation element (PCE), comprising receiving a path computation request to compute a network path for a source-destination pair in a service chain (SC) network, wherein the path computation request comprises at least one network routing constraint and a service function (SF) input associated with a plurality of SFs, computing a plurality of network paths through the network for the source-destination pair according to the network routing constraint, selecting at least a first of the network paths according to the SF input, and sending a path computation response indicating at least the first network path in response to the received path computation request.

公开(公告)号：US08923695B2

公开(公告)日：2014-12-30

申请号：US13685015

申请日：2012-11-26

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Greg Bernstein

IPC: H04B10/00 ,  H04J14/02 ,  H04L12/751 ,  H04L12/717 ,  H04L12/721 ,  H04Q11/00

CPC classification number: H04Q11/0062 ,  H04J14/0227 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0271 ,  H04L45/02 ,  H04L45/42 ,  H04L45/44 ,  H04L45/62 ,  H04Q11/0005 ,  H04Q2011/0073 ,  H04Q2011/0086

Abstract: An apparatus comprising a path computation element (PCE) configured for at least partial impairment aware routing and wavelength assignment (RWA) and to communicate with a path computation client (PCC) based on a PCE protocol (PCEP) that supports path routing, wavelength assignment (WA), and impairment validation (IV). The PCEP comprises at least one operation selected from the group consisting of a new RWA path request operation and a path re-optimization request operation. Also disclosed is a network component comprising at least one processor configured to implement a method comprising establishing a PCEP session with a PCC, receiving path computation information comprising RWA information and constraints from the PCC, and establishing impairment aware RWA (IA-RWA) based on the path computation information and a private impairment information for a vendor's equipment.

Abstract translation: 一种装置，包括被配置用于至少部分受损认知路由和波长分配（RWA）并且基于支持路径路由的PCE协议（PCEP）与路径计算客户端（PCC）通信的路径计算元件（PCE），波长分配 （WA）和减值确认（IV）。 PCEP包括从由新的RWA路径请求操作和路径重新优化请求操作组成的组中选择的至少一个操作。 还公开了一种网络组件，其包括至少一个处理器，其被配置为实现包括与PCC建立PCEP会话的方法，包括来自PCC的RWA信息和约束的接收路径计算信息，以及基于PCC的建立受损认知的RWA（IA-RWA） 路径计算信息和供应商设备的私有损伤信息。

公开(公告)号：US20140301192A1

公开(公告)日：2014-10-09

申请号：US14245029

申请日：2014-04-04

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Maarten Vissers ,  T. Benjamin Mack-Crane

IPC: H04L12/801 ,  H04L12/713

CPC classification number: H04L47/10 ,  H04L41/12 ,  H04L45/02 ,  H04L45/586

Abstract: A data center interconnection (DCI) network may comprise a data center controller (DCC) managing a plurality of data centers (DCs) interconnected by a provider network managed by a network provider controller (NPC). The provider network may be an OpenFlow based software defined networking (SDN) transport network. The DCC may initiate a virtual network service (VNS) negotiation with the NPC to connect the DCs and may specify a network abstraction granularity level. The NPC may respond by computing paths through the provider network accordingly and providing the DCC with one or more virtual networks (VNs). The DCC may compute virtual paths through the VNs and send virtual network element (VNE) connection setup commands to the DCC. The DCC may convert the VNE connection setup commands into network element (NE) commands to setup connections in NEs of the provider network. The DCC and the NPC may perform fault monitoring, detection, and recovery.

Abstract translation: 数据中心互连（DCI）网络可以包括管理由网络提供者控制器（NPC）管理的提供商网络互连的多个数据中心（DC）的数据中心控制器（DCC）。 提供商网络可以是基于OpenFlow的软件定义网络（SDN）传输网络。 DCC可以发起与NPC的虚拟网络服务（VNS）协商以连接DC，并且可以指定网络抽象粒度级别。 NPC可以相应地通过提供商网络的计算路径进行响应，并向DCC提供一个或多个虚拟网络（VN）。 DCC可以通过VN计算虚拟路径，并向DCC发送虚拟网元（VNE）连接建立命令。 DCC可以将VNE连接设置命令转换为网元（NE）命令，以在提供商网络的网元中设置连接。 DCC和NPC可以执行故障监控，检测和恢复。

公开(公告)号：US20140098673A1

公开(公告)日：2014-04-10

申请号：US14022676

申请日：2013-09-10

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Greg Bernstein

IPC: H04L12/733 ,  H04L12/24

CPC classification number: H04L45/126 ,  H04L41/12 ,  H04L45/02 ,  H04L45/1283 ,  H04L45/64

Abstract: 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 service specific virtual topology base, positioned in a network stratum, to receive a virtual service negotiation initiation message from an application stratum component, wherein the initiation message comprises a plurality of network source addresses, a plurality of network destination addresses, and a service specific objective, obtain a plurality of computed network paths that traverse a network of network stratum Network Elements (NEs) between the network source addresses and the network destination addresses and meet the service specific objective, and calculate service specific virtual topology that abstractly represents the computed service specific network paths.

Abstract translation: 一种计算机程序产品，包括存储在非暂时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，导致位于网络层中的服务特定虚拟拓扑基础从应用层接收虚拟服务协商启动消息 组件，其中所述发起消息包括多个网络源地址，多个网络目的地地址和服务特定目标，获得穿过所述网络源之间的网络层网络元素（NE）的网络的多个计算的网络路径 地址和网络目的地址，并满足服务特定目标，并计算抽象地表示计算出的服务特定网络路径的服务特定虚拟拓扑。

公开(公告)号：US08630543B2

公开(公告)日：2014-01-14

申请号：US13860638

申请日：2013-04-11

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Greg Bernstein ,  Jianrui Han

IPC: H04J14/02

CPC classification number: H04J14/0227 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0086

Abstract: An apparatus comprising a path computation element (PCE) coupled to a path computation client (PCC) and configured to perform a path computation using port wavelength restriction information for a network element (NE), wherein the port wavelength restriction information is encoded and received in a port wavelength restriction Type-Length-Value (TLV) that comprises a matrix identifier (ID), a restriction type, and the port wavelength restriction information. Also disclosed is a network component comprising at least one processor coupled to a memory and configured to receive a port wavelength restriction information TLV that corresponds to a NE, and obtain a restriction type and port wavelength restriction information based on the restriction type from the port wavelength restriction TLV, and use the port wavelength restriction information to calculate a path for the NE.

Abstract translation: 一种装置，包括耦合到路径计算客户机（PCC）的路径计算元件（PCE），并被配置为使用用于网元（NE）的端口波长限制信息来执行路径计算，其中端口波长限制信息被编码和接收 包括矩阵标识符（ID），限制类型和端口波长限制信息的端口波长限制类型长度值（TLV）。 还公开了一种网络组件，包括至少一个处理器，其耦合到存储器并且被配置为接收对应于NE的端口波长限制信息TLV，并且基于来自端口波长的限制类型获得限制类型和端口波长限制信息 限制TLV，并使用端口波长限制信息计算NE的路径。

公开(公告)号：US20130077970A1

公开(公告)日：2013-03-28

申请号：US13685015

申请日：2012-11-26

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Greg Bernstein

IPC: H04J14/02

CPC classification number: H04Q11/0062 ,  H04J14/0227 ,  H04J14/0257 ,  H04J14/0258 ,  H04J14/0267 ,  H04J14/0269 ,  H04J14/0271 ,  H04L45/02 ,  H04L45/42 ,  H04L45/44 ,  H04L45/62 ,  H04Q11/0005 ,  H04Q2011/0073 ,  H04Q2011/0086

Abstract: An apparatus comprising a path computation element (PCE) configured for at least partial impairment aware routing and wavelength assignment (RWA) and to communicate with a path computation client (PCC) based on a PCE protocol (PCEP) that supports path routing, wavelength assignment (WA), and impairment validation (IV). The PCEP comprises at least one operation selected from the group consisting of a new RWA path request operation and a path re-optimization request operation. Also disclosed is a network component comprising at least one processor configured to implement a method comprising establishing a PCEP session with a PCC, receiving path computation information comprising RWA information and constraints from the PCC, and establishing impairment aware RWA (IA-RWA) based on the path computation information and a private impairment information for a vendor's equipment.

公开(公告)号：US10812340B2

公开(公告)日：2020-10-20

申请号：US16223879

申请日：2018-12-18

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Young Lee ,  Dhruv Dhody

IPC: G06F15/16 ,  H04L12/24 ,  H04L12/46 ,  H04L12/715 ,  H04L12/723

Abstract: A method for establishing end-to-end tunnels extending across multiple domains using a network element. The method includes receiving a request from a customer controller to implement a virtual network (VN) created by the customer controller, wherein the VN identifies the end-to-end tunnels extending across the multiple domains, mapping the VN to available resources based on network constraints in response to the request, and transmitting, after the VN has been mapped, a message to a network controller managing one of the domains that includes a network path used to form a portion of one of the end-to-end tunnels, wherein the message includes an association object having a Type-Length-Value (TLV) field containing a virtual network identifier binding the network path to the VN.

公开(公告)号：US10798001B2

公开(公告)日：2020-10-06

申请号：US15978867

申请日：2018-05-14

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Maarten Vissers ,  T. Benjamin Mack-Crane

IPC: H04L12/24 ,  H04L12/751 ,  H04L12/801 ,  H04L12/713

Abstract: A data center interconnection (DCI) network may comprise a data center controller (DCC) managing a plurality of data centers (DCs) interconnected by a provider network managed by a network provider controller (NPC). The provider network may be an OpenFlow based software defined networking (SDN) transport network. The DCC may initiate a virtual network service (VNS) negotiation with the NPC to connect the DCs and may specify a network abstraction granularity level. The NPC may respond by computing paths through the provider network accordingly and providing the DCC with one or more virtual networks (VNs). The DCC may compute virtual paths through the VNs and send virtual network element (VNE) connection setup commands to the DCC. The DCC may convert the VNE connection setup commands into network element (NE) commands to setup connections in NEs of the provider network. The DCC and the NPC may perform fault monitoring, detection, and recovery.

公开(公告)号：US10587937B2

公开(公告)日：2020-03-10

申请号：US15948850

申请日：2018-04-09

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee ,  Italo Busi

IPC: H04Q11/00

Abstract: A method is provided to establish a path in an optical domain to couple first and second IP routing domains for use by a VPN. A network controller (NC) receives an optical path setup command and, in response, determines an optical path ID identifying an optical path. The NC sends a mapping command to a domain controller (DC) associated with the first IP routing domain and receives routing information that includes a VPN label. The NC sends a forwarding command including the routing information to a DC associated with the second IP routing domain, the forwarding command configured to cause a termination point in the second IP routing domain to forward a packet to the optical path when the packet comprises elements of the routing information.

公开(公告)号：US10542076B2

公开(公告)日：2020-01-21

申请号：US15950954

申请日：2018-04-11

Applicant: Futurewei Technologies, Inc.

Inventor： Young Lee

IPC: G06F15/173 ,  H04L29/08

Abstract: A method implemented by a cloud service control gateway (CSCG), comprises transmitting, by a transmitter, a query message to a network control gateway (NCG) operating in a network stratum, wherein the query message comprises a network resource requirement, receiving, by a receiver, a reply to the query message from the NCG, wherein the reply comprises a status of resources in the network stratum, and selecting, by a processor coupled to the transmitter and the receiver, a destination server for an application request based on the status of resources in the network stratum and the network resource requirement.