Scalable connectivity fault management in a bridged/virtual private LAN service environment
    1.
    发明授权
    Scalable connectivity fault management in a bridged/virtual private LAN service environment 有权
    桥接/虚拟专用LAN服务环境中的可扩展连接故障管理

    公开(公告)号:US08842550B2

    公开(公告)日:2014-09-23

    申请号:US13619559

    申请日:2012-09-14

    摘要: A first network element that is to be coupled with a second network element over a first network in the same domain is described. The first network element includes a connectivity check detection module and a connectivity check fault state change module. The connectivity check detection module detects, according to a first protocol, a connectivity status of a local maintenance endpoint on a second network changing between not active and active. The connectivity check fault state change module creates and sends a first fault state change message, according to a second protocol, in response to the connectivity status of the local maintenance endpoint changing from not active to active instead of forwarding connectivity check messages periodically received by the first network element to a remote maintenance endpoint coupled to the second network element over a third network.

    摘要翻译: 描述了要在相同域中的第一网络上与第二网络元件耦合的第一网元。 第一网元包括连接检查检测模块和连通性检查故障状态改变模块。 连接检查检测模块根据第一协议检测第二网络上的本地维护端点在不活动和活动之间的连接状态。 根据第二协议,连接性检查故障状态改变模块响应于本地维护端点从不活动状态改变为活动而不是转发定期接收的连接性检查消息而创建并发送第一故障状态改变消息 第一网络元件连接到通过第三网络耦合到第二网络元件的远程维护端点。

    HVPLS hub connectivity failure recovery with dynamic spoke pseudowires
    2.
    发明授权
    HVPLS hub connectivity failure recovery with dynamic spoke pseudowires 有权
    HVPLS集线器连接故障恢复与动态辐条伪线

    公开(公告)号:US08817601B2

    公开(公告)日:2014-08-26

    申请号:US13217992

    申请日:2011-08-25

    摘要: Techniques for recovering from hierarchical virtual private LAN service (HVPLS) hub connectivity failure with a dynamic spoke pseudowire. According to one embodiment of the invention, a provider edge (PE) network element in the HVPLS hub monitors for a failure of HVPLS hub connectivity failure and reuses an HVPLS spoke connectivity failure recovery mechanism in an MTU by fabricating failure of one or more spoke facing connectivity elements coupling the MTU with the PE network element causing the MTU to transition to a secondary PE network element in the HVPLS hub. In addition, the PE network element establishes a dynamic spoke pseudowire for each virtual instance affected with the MTU to restore HVPLS hub connectivity for that PE network element.

    摘要翻译: 使用动态辐条伪线从层次化虚拟专用局域网服务(HVPLS)集线器连接故障中恢复的技术。 根据本发明的一个实施例,HVPLS集线器中的提供商边缘(PE)网元监视HVPLS集线器连接故障的故障,并且通过制造一个或多个辐条面对的故障来重新使用MTU中的HVPLS辐条连接故障恢复机制 连接元件将MTU与PE网络元件相连,导致MTU过渡到HVPLS集线器中的辅助PE网络元件。 此外,PE网络元件为受MTU影响的每个虚拟实例建立动态辐条伪线,以恢复该PE网络元件的HVPLS集线器连接。

    Reducing CC message transmission in a provider network
    3.
    发明授权
    Reducing CC message transmission in a provider network 有权
    在提供商网络中减少CC消息传输

    公开(公告)号:US08018863B2

    公开(公告)日:2011-09-13

    申请号:US12207065

    申请日:2008-09-09

    IPC分类号: G01R31/08

    摘要: A method and apparatus for reducing the number of CC messages transmitted in a provider network. In one embodiment of the invention, a first service provider network element receives CC messages from a first customer network at a first periodicity rate. The first service provider network element stores the received CC messages and reduces the first periodicity rate to create a second periodicity rate that is smaller than the first periodicity rate. The first service provider network element transmits CC messages to a second service provider network element through the provider network at the second periodicity rate. Other methods and apparatus are also described.

    摘要翻译: 一种用于减少在提供商网络中发送的CC消息的数量的方法和装置。 在本发明的一个实施例中,第一服务提供商网络单元以第一周期性速率从第一客户网络接收CC消息。 第一服务提供商网元存储所接收的CC消息并且减小第一周期率以创建小于第一周期性速率的第二周期性速率。 第一服务提供商网络单元以第二周期性速率通过提供商网络将CC消息发送到第二服务提供商网络元件。 还描述了其它方法和装置。

    Scalable Connectivity Fault Management In A Bridged/Virtual Private Lan Service Environment
    4.
    发明申请
    Scalable Connectivity Fault Management In A Bridged/Virtual Private Lan Service Environment 有权
    桥接/虚拟专用LAN服务环境中的可扩展连接故障管理

    公开(公告)号:US20090109837A1

    公开(公告)日:2009-04-30

    申请号:US12050118

    申请日:2008-03-17

    IPC分类号: G01R31/08

    摘要: A method and apparatus that proxies connectivity check messages and sends fault state changes messages across an MPLS/VPLS network is described. A network element proxies connectivity check messages for remote maintenance endpoints based on a local database. The network element updates the database based on received fault state change message that identify a fault state change of a remote maintenance endpoint. The network element detects fault state changes of local maintenance endpoints and sends a fault state change message to other network elements that proxy connectivity check message for the local maintenance endpoints.

    摘要翻译: 描述了通过MPLS / VPLS网络代理连通性检查消息并发送故障状态改变消息的方法和装置。 网络元素根据本地数据库代理远程维护端点的连接检查消息。 网元基于接收到的故障状态改变消息来更新数据库,该消息识别远程维护端点的故障状态改变。 网元检测本地维护端点的故障状态变化,并将故障状态更改消息发送给本地维护端点的代理连接性检查消息的其他网元。

    HVPLS Hub Connectivity Failure Recovery With Dynamic Spoke Pseudowires
    5.
    发明申请
    HVPLS Hub Connectivity Failure Recovery With Dynamic Spoke Pseudowires 有权
    HVPLS集线器连接故障恢复与动态Spoke伪线

    公开(公告)号:US20100165832A1

    公开(公告)日:2010-07-01

    申请号:US12347863

    申请日:2008-12-31

    IPC分类号: G06F11/00

    摘要: Techniques for recovering from hierarchical virtual private LAN service (HVPLS) hub connectivity failure with a dynamic spoke pseudowire. According to one embodiment of the invention, a provider edge (PE) network element in the HVPLS hub monitors for a failure of HVPLS hub connectivity failure and reuses an HVPLS spoke connectivity failure recovery mechanism in an MTU by fabricating failure of one or more spoke facing connectivity elements coupling the MTU with the PE network element causing the MTU to transition to a secondary PE network element in the HVPLS hub. In addition, the PE network element establishes a dynamic spoke pseudowire for each virtual instance affected with the MTU to restore HVPLS hub connectivity for that PE network element.

    摘要翻译: 使用动态辐条伪线从层次化虚拟专用局域网服务(HVPLS)集线器连接故障中恢复的技术。 根据本发明的一个实施例,HVPLS集线器中的提供商边缘(PE)网元监视HVPLS集线器连接故障的故障,并且通过制造一个或多个辐条面对的故障来重新使用MTU中的HVPLS辐条连接故障恢复机制 连接元件将MTU与PE网络元件相连,导致MTU过渡到HVPLS集线器中的辅助PE网络元件。 此外,PE网络元件为受MTU影响的每个虚拟实例建立动态辐条伪线,以恢复该PE网络元件的HVPLS集线器连接。

    ENHANCE FAULT TRACING IN MULTI-TIERED ETHERNET/MPLS NETWORK
    6.
    发明申请
    ENHANCE FAULT TRACING IN MULTI-TIERED ETHERNET/MPLS NETWORK 有权
    增强在多层以太网/ MPLS网络中的故障跟踪

    公开(公告)号:US20090113070A1

    公开(公告)日:2009-04-30

    申请号:US11955971

    申请日:2007-12-13

    IPC分类号: G06F15/173

    摘要: Techniques for providing connectivity fault management (CFM) for a multi-tiered network are described herein. In one embodiment, a link trace message (LTM) is received at a provider edge (PE) router and originated from a first Ethernet node and destined to a second Ethernet node, where the PE router interfaces an Ethernet and a multi-protocol label switching (MPLS) network. In response, the PE router initiates an MPLS trace session, including generating an MPLS trace message based on the LTM message to one or more MPLS nodes along a path between the first and second Ethernet nodes within the MPLS network. Subsequently, in response to one or more MPLS trace reply messages from the MPLS nodes of the MPLS network, the PE router generates a first link trace reply (LTR) message and sends the first LTR message to the first Ethernet node over the Ethernet. Other methods and apparatuses are also described.

    摘要翻译: 本文描述了用于为多层网络提供连通性故障管理(CFM)的技术。 在一个实施例中,链路跟踪消息(LTM)在提供商边缘(PE)路由器处被接收并且源自第一以太网节点,并且发往第二以太网节点,其中PE路由器接口以太网和多协议标签交换 (MPLS)网络。 作为响应,PE路由器发起MPLS跟踪会话,包括基于LTM消息向沿着MPLS网络中的第一和第二以太网节点之间的路径的一个或多个MPLS节点生成MPLS跟踪消息。 随后,响应于来自MPLS网络的MPLS节点的一个或多个MPLS跟踪应答消息,PE路由器生成第一链路跟踪应答(LTR)消息,并且通过以太网将第一LTR消息发送到第一以太网节点。 还描述了其它方法和装置。

    INTER-WORKING OF EFM-OAM AND CFM-OAM FOR MOBILE BACKHAUL NETWORKS
    7.
    发明申请
    INTER-WORKING OF EFM-OAM AND CFM-OAM FOR MOBILE BACKHAUL NETWORKS 有权
    用于移动回传网络的EFM-OAM和CFM-OAM的互操作

    公开(公告)号:US20110249567A1

    公开(公告)日:2011-10-13

    申请号:US12757774

    申请日:2010-04-09

    IPC分类号: H04L12/26

    CPC分类号: H04W24/00 H04W92/045

    摘要: On a first network element in a radio access network (RAN), supporting operations, management and administration (OAM) between network elements that support Ethernet in the first mile (EFM) and network elements that support connectivity fault management (CFM) in the radio access network by receiving an EFM message from a second network element that supports EFM, wherein the second network element is in the RAN and wherein the EFM message includes OAM data; converting the OAM data from the EFM message into a sub-type-length-value (sub-TLV) of a CFM message; and transmitting the CFM message including the OAM data in the sub-TLV to a third network element that supports CFM, wherein the third network element is in the RAN, whereby an end-to-end OAM sublayer is provided in the RAN by conversion of OAM data from EFM to CFM.

    摘要翻译: 在无线电接入网络(RAN)中的第一网络元件上,支持在第一英里(EFM)中支持以太网的网络元件与在无线电中支持连接故障管理(CFM)的网络元件之间的支持操作,管理和管理(OAM) 通过从支持EFM的第二网元接收EFM消息,其中所述第二网元在所述RAN中,并且其中所述EFM消息包括OAM数据; 将来自EFM消息的OAM数据转换成CFM消息的子类型长度值(sub-TLV); 以及将包含所述子TLV中的所述OAM数据的所述CFM消息发送到支持CFM的第三网元,其中,所述第三网元处于所述RAN中,由此通过转换所述RAN中的端到端OAM子层 OAM数据从EFM到CFM。

    Enhance fault tracing in multi-tiered Ethernet/MPLS network
    8.
    发明授权
    Enhance fault tracing in multi-tiered Ethernet/MPLS network 有权
    加强多层以太网/ MPLS网络中的故障跟踪

    公开(公告)号:US07966420B2

    公开(公告)日:2011-06-21

    申请号:US11955971

    申请日:2007-12-13

    IPC分类号: G06F15/16

    摘要: Techniques for providing connectivity fault management (CFM) for a multi-tiered network are described herein. In one embodiment, a link trace message (LTM) is received at a provider edge (PE) router and originated from a first Ethernet node and destined to a second Ethernet node, where the PE router interfaces an Ethernet and a multi-protocol label switching (MPLS) network. In response, the PE router initiates an MPLS trace session, including generating an MPLS trace message based on the LTM message to one or more MPLS nodes along a path between the first and second Ethernet nodes within the MPLS network. Subsequently, in response to one or more MPLS trace reply messages from the MPLS nodes of the MPLS network, the PE router generates a first link trace reply (LTR) message and sends the first LTR message to the first Ethernet node over the Ethernet. Other methods and apparatuses are also described.

    摘要翻译: 本文描述了用于为多层网络提供连通性故障管理(CFM)的技术。 在一个实施例中,链路跟踪消息(LTM)在提供商边缘(PE)路由器处被接收并且源自第一以太网节点,并且发往第二以太网节点,其中PE路由器接口以太网和多协议标签交换 (MPLS)网络。 作为响应,PE路由器发起MPLS跟踪会话,包括基于LTM消息向沿着MPLS网络中的第一和第二以太网节点之间的路径的一个或多个MPLS节点生成MPLS跟踪消息。 随后,响应于来自MPLS网络的MPLS节点的一个或多个MPLS跟踪应答消息,PE路由器生成第一链路跟踪应答(LTR)消息,并且通过以太网将第一LTR消息发送到第一以太网节点。 还描述了其它方法和装置。

    Reducing CC Message Transmission in a Provider Network
    9.
    发明申请
    Reducing CC Message Transmission in a Provider Network 有权
    减少供应商网络中的CC消息传输

    公开(公告)号:US20100061252A1

    公开(公告)日:2010-03-11

    申请号:US12207065

    申请日:2008-09-09

    IPC分类号: H04L12/26

    摘要: A method and apparatus for reducing the number of CC messages transmitted in a provider network. In one embodiment of the invention, a first service provider network element receives CC messages from a first customer network at a first periodicity rate. The first service provider network element stores the received CC messages and reduces the first periodicity rate to create a second periodicity rate that is smaller than the first periodicity rate. The first service provider network element transmits CC messages to a second service provider network element through the provider network at the second periodicity rate. Other methods and apparatus are also described.

    摘要翻译: 一种用于减少在提供商网络中发送的CC消息的数量的方法和装置。 在本发明的一个实施例中,第一服务提供商网络元件以第一周期性速率从第一客户网络接收CC消息。 第一服务提供商网元存储所接收的CC消息并且减小第一周期率以创建小于第一周期性速率的第二周期性速率。 第一服务提供商网络单元以第二周期性速率通过提供商网络将CC消息发送到第二服务提供商网络元件。 还描述了其它方法和装置。

    Inter-working of EFM-OAM and CFM-OAM for mobile backhaul networks
    10.
    发明授权
    Inter-working of EFM-OAM and CFM-OAM for mobile backhaul networks 有权
    用于移动回程网络的EFM-OAM和CFM-OAM的互操作

    公开(公告)号:US08411701B2

    公开(公告)日:2013-04-02

    申请号:US12757774

    申请日:2010-04-09

    IPC分类号: H04J3/16

    CPC分类号: H04W24/00 H04W92/045

    摘要: On a first network element in a radio access network (RAN), supporting operations, management and administration (OAM) between network elements that support Ethernet in the first mile (EFM) and network elements that support connectivity fault management (CFM) in the radio access network by receiving an EFM message from a second network element that supports EFM, wherein the second network element is in the RAN and wherein the EFM message includes OAM data; converting the OAM data from the EFM message into a sub-type-length-value (sub-TLV) of a CFM message; and transmitting the CFM message including the OAM data in the sub-TLV to a third network element that supports CFM, wherein the third network element is in the RAN, whereby an end-to-end OAM sublayer is provided in the RAN by conversion of OAM data from EFM to CFM.

    摘要翻译: 在无线电接入网络(RAN)中的第一网络元件上,支持在第一英里(EFM)中支持以太网的网络元件与在无线电中支持连接故障管理(CFM)的网络元件之间的支持操作,管理和管理(OAM) 通过从支持EFM的第二网元接收EFM消息,其中所述第二网元在所述RAN中,并且其中所述EFM消息包括OAM数据; 将来自EFM消息的OAM数据转换成CFM消息的子类型长度值(sub-TLV); 以及将包含所述子TLV中的所述OAM数据的所述CFM消息发送到支持CFM的第三网元,其中,所述第三网元位于所述RAN中,由此通过转换所述RAN中的端对端OAM子层 OAM数据从EFM到CFM。