公开(公告)号：US20150089629A1

公开(公告)日：2015-03-26

申请号：US14561713

申请日：2014-12-05

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Rui GU ,  Jie Dong ,  Lianshu Zheng

IPC: H04L29/06 ,  H04L12/721

CPC classification number: H04L63/0272 ,  H04L12/4633 ,  H04L45/14 ,  H04L45/507

Abstract: Embodiments of the present invention provide a network label allocation method, a device, and a system, which enable a local PE to distinguish packets from different remote PEs. The method includes: generating, by a local provider edge PE, a VPN label route for each remote PE, where VPN labels in VPN label routes of different remote PEs are different, and the remote PE and the local PE at least belong to a same VPN; and sending the VPN label route to the remote PE, so that the remote PE separately matches an IP address of the remote PE with a target device IP address in the VPN label route, and matches an import route target RT of each VRF of the remote PE with a route target RT in the VPN label route, a packet related to a successfully matched VRF.

Abstract translation: 本发明的实施例提供一种网络标签分配方法，设备和系统，其使得本地PE能够区分来自不同远程PE的分组。 该方法包括：由本地提供商边缘PE生成每个远程PE的VPN标签路由，其中​​不同远端PE的VPN标签路由中的VPN标签不同，远端PE和本地PE至少属于同一PE VPN; 并将VPN标签路由发送到远程PE，使远端PE分别与远端PE的IP地址和VPN标签路由中的目标设备IP地址匹配，并与远程PE的每个VRF的导入路由目标RT匹配 PE在VPN标签路由中具有路由目标RT，与成功匹配的VRF相关的数据包。

公开(公告)号：US08964759B2

公开(公告)日：2015-02-24

申请号：US13876637

申请日：2011-09-29

Applicant: Pier Luca Montessoro

Inventor： Pier Luca Montessoro

IPC: H04L12/28 ,  H04L12/721 ,  H04L12/751 ,  H04L12/723

CPC classification number: H04L45/44 ,  H04L45/02 ,  H04L45/34 ,  H04L45/507 ,  H04L45/566

Abstract: Method for direct access to information stored in the nodes of a packet switching network comprises the steps of: collecting the pointers, corresponding to which the information required for processing the packets belonging to one and the same flow is stored in each node of the network;—constructing a distributed linked data structure (DLDS) in which the pointers are contained inside packets (PI, P2, P3) that traverse the DLDS-aware routers constituting the path between sender (A) and receiver (B) of the flow;—use of the DLDS data structure for direct access to the information stored in a DLDS-aware router, using a pointer of the DLDS contained in the packet in transit;—selection of the pointer of the DLDS contained in the packet in transit based on its position inside said packet, said position being equal to the serial number of the DLDS-aware router in the flow path, and checking of validity by consistency tests.

Abstract translation: 用于直接访问存储在分组交换网络的节点中的信息的方法包括以下步骤：收集对应于将属于同一流的分组处理所需的信息存储在网络的每个节点中的指针; - 构建分布式链接数据结构（DLDS），其中所述指针被包含在穿过构成所述流的发送者（A）和所述接收者（B）之间的路径的DLDS感知路由器的分组（PI，P2，P3）内） 使用DLDS数据结构直接访问存储在DLDS感知路由器中的信息，使用包含在传输中的分组中的DLDS的指针; - 基于其传输的包中所包含的DLDS的指针的选择 所述位置等于流路中的DLDS感知路由器的序列号，并通过一致性测试来检查有效性。

公开(公告)号：US20150003463A1

公开(公告)日：2015-01-01

申请号：US14317818

申请日：2014-06-27

Applicant: Futurewei Technologies, Inc.

Inventor： Renwei Li ,  Katherine Zhao ,  Ming Li

IPC: H04L12/723

CPC classification number: H04L45/507 ,  H04L12/4641

Abstract: A network node for forwarding a data packet to a virtual network. The network node may maintain a table comprising one-to-one mapping information between one or more virtual private network (VPN) labels and one or more identifying labels for a destination virtual network. The network node may receive a data packet from a Multiprotocol Label Switching (MPLS) network. The data packet may comprise one or more VPN labels, at least one of which may be a MPLS Big Label Value that supports one-to-one mapping for more than one million destination virtual network addresses. The MPLS Big Label Value may comprise a destination virtual network address. The network element may map the one or more VPN labels to corresponding identifying labels for the destination virtual network according to the table, and forward the data packet to the destination virtual network.

Abstract translation: 用于将数据分组转发到虚拟网络的网络节点。 网络节点可以维护包括一个或多个虚拟专用网（VPN）标签与目的地虚拟网络的一个或多个标识标签之间的一对一映射信息的表。 网络节点可以从多协议标签交换（MPLS）网络接收数据分组。 数据分组可以包括一个或多个VPN标签，其中的至少一个可以是支持超过一百万个目的地虚拟网络地址的一对一映射的MPLS大标签值。 MPLS大标签值可以包括目的地虚拟网络地址。 网元可以根据该表将一个或多个VPN标签映射到目的地虚拟网络的相应标识标签，并将数据分组转发到目的地虚拟网络。

公开(公告)号：US08902730B2

公开(公告)日：2014-12-02

申请号：US13354136

申请日：2012-01-19

Applicant: Bhupesh Kothari ,  Rahul Aggarwal

Inventor： Bhupesh Kothari ,  Rahul Aggarwal

IPC: G01R31/08 ,  H04L12/721 ,  H04L12/761 ,  H04L12/703 ,  H04L12/701 ,  H04L12/46 ,  H04L12/723 ,  H04L12/709 ,  H04L12/707 ,  H04L12/741 ,  H04L12/24 ,  H04L12/715

CPC classification number: H04L41/0663 ,  H04L12/4633 ,  H04L45/00 ,  H04L45/04 ,  H04L45/16 ,  H04L45/22 ,  H04L45/245 ,  H04L45/28 ,  H04L45/507 ,  H04L45/54 ,  H04L45/66 ,  H04L45/68

Abstract: A method performed by a provider edge device includes generating pseudo-wire tables based on virtual private local area network service advertisements from other provider edge devices, where the provider edge device services customer edge devices, and establishing pseudo-wires with respect to the other provider edge devices, based on the pseudo-wire tables, where the pseudo-wires include an active pseudo-wire and at least one standby pseudo-wire with respect to each of the other provider edge devices. The method also includes generating and advertising VPLS advertisement to the other provider edge devices, detecting a communication link failure associated with one of the customer edge devices in which the provider edge device services, and determining whether the at least one standby pseudo-wire needs to be utilized because of the communication link failure.

Abstract translation: 由提供商边缘设备执行的方法包括：基于来自其他提供商边缘设备的虚拟专用局域网服务广告生成伪线表，其中提供商边缘设备服务于客户边缘设备，以及针对另一个提供商建立伪线 基于伪线表，其中伪线包括相对于其他提供商边缘设备中的每一个的活动伪线和至少一个备用伪线。 该方法还包括向其他提供商边缘设备生成和广告VPLS广告，检测与提供者边缘设备服务的其中一个客户边缘设备相关联的通信链路故障，以及确定至少一个备用伪线需要 由于通信链路故障而被利用。

公开(公告)号：US20140269747A1

公开(公告)日：2014-09-18

申请号：US13799009

申请日：2013-03-13

Applicant: Pradeep G. Jain ,  Kanwar D. Singh

Inventor： Pradeep G. Jain ,  Kanwar D. Singh

IPC: H04L12/56

CPC classification number: H04L45/507 ,  H04L12/4641 ,  H04L45/68

Abstract: Systems, methods, architectures and/or apparatus for reflecting information between provider equipment (PE) nodes associated with a Virtual Private LAN Service (VPLS) via a network element adapted to operate as a Forwarding Equivalence Class (FEC) Reflector (FR) node

Abstract translation: 用于经由适于作为转发等效类（FEC）反射器（FR）节点操作的网络元件的与虚拟专用LAN服务（VPLS）相关联的提供商设备（PE）节点之间反映信息的系统，方法，架构和/

公开(公告)号：US08811388B2

公开(公告)日：2014-08-19

申请号：US12412589

申请日：2009-03-27

Applicant: Donald Fedyk

Inventor： Donald Fedyk

IPC: H04L12/28 ,  H04L12/56

CPC classification number: H04L12/1886 ,  H04L41/12 ,  H04L45/02 ,  H04L45/026 ,  H04L45/10 ,  H04L45/12 ,  H04L45/16 ,  H04L45/306 ,  H04L45/50 ,  H04L45/507 ,  H04L45/68

Abstract: Domain-wide unique node identifiers and domain-wide unique service identifiers are distributed within a MPLS domain using routing system LSAs. Nodes on the MPLS network compute shortest path trees for each destination and install unicast forwarding state based on the calculated trees. Nodes also install multicast connectivity between nodes advertising common interest in a common service identifier. Rather than distributing labels to be used in connection with unicast and multicast connectivity, the nodes deterministically calculate the labels. Any number of label contexts may be calculated. The labels may either be domain wide unique per unicast path or per multicast, or may be locally unique and deterministically calculated to provide forwarding context for the associated path. Multicast and unicast paths may be congruent, although this is not a requirement.

Abstract translation: 域范围内的唯一节点标识符和域范围的唯一服务标识符使用路由系统LSA分布在MPLS域内。 MPLS网络上的节点计算每个目的地的最短路径树，并根据计算的树安装单播转发状态。 节点还在通用服务标识符之间广播共同兴趣的节点之间安装多播连接。 不是分发与单播和多播连接相关联的标签，而是确定性地计算标签。 可以计算任意数量的标签上下文。 标签可以是每个单播路径或每个多播的域宽唯一，或者可以是本地唯一的和确定性地计算的，以为相关联的路径提供转发上下文。 组播和单播路径可能是一致的，尽管这不是必需的。

公开(公告)号：US20140098817A1

公开(公告)日：2014-04-10

申请号：US14101238

申请日：2013-12-09

Applicant: ERICSSON AB

Inventor： Rahul Aggarwal ,  George Apostolopoulos ,  Liming Wei

IPC: H04L12/761 ,  H04L12/723

CPC classification number: H04L45/507 ,  H04H20/16 ,  H04L12/66 ,  H04L29/12575 ,  H04L45/16 ,  H04L45/48

Abstract: A source edge router initiates point-to-point (P2P) label switched paths (LSPs) to multiple receiver edge routers, sends one or more PATH messages to one or more nodes downstream of the source edge router for the P2P LSPs, wherein each one of the set of PATH messages includes a same identifier of a point-to-multipoint (P2MP) LSP that includes a session object that contains a tunnel identifier and a P2MP identifier, and receives from each of those nodes downstream of the source edge router, a set of one or more RESV messages, wherein each one of the received RESV messages received from a respective node downstream of the source edge router includes the identifier of the P2MP LSP and a label allocated by that node downstream of the source edge router.

Abstract translation: 源边缘路由器向多个接收器边缘路由器发起点对点（P2P）标签交换路径（LSP），将一个或多个PATH消息发送到用于P2P LSP的源边缘路由器下游的一个或多个节点，其中每个 的PATH消息集合包括包括包含隧道标识符和P2MP标识符的会话对象的点对多点（P2MP）LSP的相同标识符，并且从源边缘路由器的下游的每个节点接收， 一组一个或多个RESV消息，其中从源边缘路由器下游的相应节点接收的所接收的RESV消息中的每一个包括P2MP LSP的标识符和由该源边缘路由器下游的该节点分配的标签。

公开(公告)号：US08693339B2

公开(公告)日：2014-04-08

申请号：US12634906

申请日：2009-12-10

Applicant: Ning So

Inventor： Ning So

IPC: H04L1/12

CPC classification number: H04L47/18 ,  H04L45/507 ,  H04L47/11 ,  H04L47/26 ,  H04L47/32 ,  H04L47/33

Abstract: A system includes an ingress node, an egress node, and one or more intermediate nodes. A path is formed from the ingress node to the egress node via the one or more intermediate nodes, where the path carries label distribution protocol (LDP) packets of an LDP traffic flow. One of the intermediate nodes detects traffic congestion, modifies one of the LDP packets to include an indicator of the traffic congestion, and sends the modified LDP packet towards the egress node. The egress node receives the modified LDP packet and notifies the ingress node of the traffic congestion in response to identifying the indicator of the traffic congestion within the modified LDP packet.

Abstract translation: 系统包括入口节点，出口节点和一个或多个中间节点。 通过一个或多个中间节点从入口节点到出口节点形成路径，路由携带LDP业务流的标签分发协议（LDP）报文。 其中一个中间节点检测到流量拥塞，修改LDP报文中的一个，包括流量拥塞的指示符，并将修改后的LDP报文发送给出口节点。 出口节点接收修改后的LDP报文，响应识别修改后的LDP报文中的流量拥塞指标，通知入口节点拥塞。

公开(公告)号：US08630164B2

公开(公告)日：2014-01-14

申请号：US12535350

申请日：2009-08-04

Applicant: Thomas Scholl ,  Aswatnarayan Raghuram

Inventor： Thomas Scholl ,  Aswatnarayan Raghuram

IPC: H04L12/28

CPC classification number: H04L45/00 ,  H04L43/10 ,  H04L45/24 ,  H04L45/28 ,  H04L45/507

Abstract: Example methods, apparatus and articles of manufacture to respond to signaling protocol failures in traffic engineering (TE) tunnels are disclosed. A disclosed example apparatus includes a database to store a tunnel state for a first TE tunnel, a signaling engine to detect whether a signaling protocol failure associated with the first TE tunnel occurred, and to set the tunnel state to a first logic state when the signaling protocol failure is detected, and a label switching engine to route the data through a multiprotocol label switching (MPLS) based network via a second TE tunnel when the tunnel state is the first logic state, and to route the data through the MPLS-based network via the first TE tunnel when the tunnel state is a second logic state.

Abstract translation: 公开了用于响应交通工程（TE）隧道中的信令协议故障的示例性方法，设备和制品。 所公开的示例性设备包括：存储用于第一TE隧道的隧道状态的数据库，用于检测是否发生与第一TE隧道相关联的信令协议故障的信令引擎，以及当信令发送时将隧道状态设置为第一逻辑状态 检测到协议失败，以及标签交换引擎，当隧道状态为第一逻辑状态时，经由第二TE隧道通过基于多协议标签交换（MPLS）的网络路由数据，并且通过基于MPLS的网络 当隧道状态是第二逻辑状态时，经由第一TE隧道。

公开(公告)号：US20130265871A1

公开(公告)日：2013-10-10

申请号：US13856624

申请日：2013-04-04

Applicant: PRANJAL K. DUTTA

Inventor： PRANJAL K. DUTTA

IPC: H04L12/70

CPC classification number: H04L47/12 ,  H04L45/28 ,  H04L45/50 ,  H04L45/507

Abstract: A method and apparatus for implementing Label Information Base (LIB) overload protection for a respective Forwarding Equivalency Class (FEC) type associated with a Label Switched Path (LSP).

Abstract translation: 一种用于实现与标签交换路径（LSP）相关联的相应转发等价类（FEC）类型的标签信息库（LIB）过载保护的方法和装置。