CN102090029A - 在通信网络中重新路由业务 - Google Patents

在通信网络中重新路由业务 Download PDF

Info

Publication number
CN102090029A
CN102090029A CN2008801304030A CN200880130403A CN102090029A CN 102090029 A CN102090029 A CN 102090029A CN 2008801304030 A CN2008801304030 A CN 2008801304030A CN 200880130403 A CN200880130403 A CN 200880130403A CN 102090029 A CN102090029 A CN 102090029A
Authority
CN
China
Prior art keywords
node
fault
business
transformed
network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2008801304030A
Other languages
English (en)
Inventor
A·科蒂
R·菲奥罗内
R·马蒂诺蒂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of CN102090029A publication Critical patent/CN102090029A/zh
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/02—Topology update or discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/28—Routing or path finding of packets in data switching networks using route fault recovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/48—Routing tree calculation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/48—Routing tree calculation
    • H04L45/488—Routing tree calculation using root node determination

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

一种在跨通信网络(1)的路径上的故障(3)的情况中在该网络中重新路由业务的方法，该方法包括确定位于故障与网络入口节点(6)之间的第一节点(4)是否能将业务转换到避免故障的备选路径，并且如果确定第一节点不具如此能力，则确定位于第一节点上游的第二节点(8)是否能将业务转换到避免故障的备选路径。

Description

在通信网络中重新路由业务
技术领域
本发明一般涉及在通信网络中重新路由业务。
背景技术
尽管像因特网协议上的电视流多播(IPTV)等要求点到多点连接性的多媒体业务上的公知性，E树服务的支持在面向连接的-分组交换(CO-PS)网络中是最近的事件，像多协议标签交换(MPLS)、传输MPLS(T-MPLS)或提供商主干桥接工程(PBB-TE)。有关如何有效地支持E树服务并在CO-PS网络中提供所要求的网络弹性的争论仍在进行中。一直被灌输的某个疑问是CO-PS网络实际上对于此类服务不如无连接-分组交换(CL-PS)网络那么好。目前不存在最终标准解决方案。
像基于以太网网络(例如，提供商桥或提供商主干桥)等现有无连接选择仍依赖极基础的控制平面解决方案以用于回路避免和弹性，像生成树协议的几个变型。与其实现精密业务工程设计的有限能力一起，这是为什么向CO-PS网络的迁移不可避免地正在发生的原因之一，迫使标准制订机构和技术团体面对与E树服务的有效支持有关的问题。
最终，完全依赖开放系统互连(OSI)基本参考模型的第3层(即，IP层)的解决方案是不适合的，成本效率低且复杂度不当，特别是在与城域网络有关时。
标准制订机构目前正在致力于定义以所要求的效率程度来支持E树服务的适当网络基础设施。迄今为止，对于点到多点基础设施，没有最终确定完整的可互操作解决方案，但有解决CO-PS网络中此问题的几个尝试。最有效的解决方案利用CO-PS网络中建立的树状基础设施，这些基础设施将一个入口或根节点(这是E树服务进入网络/子网络的节点)连接到几个出口节点(它们是E树服务的目的地)，旨在优化网络资源的总体使用。有关如何为特定网络拓扑和可能约束构建最佳树的大量文献可供使用。另外，弹性是此类服务的一个基本要求，因为像IPTV等盈利应用不能以低质量或不可接受的中断提供给付费客户。此树状基础设施因此需要受到保护以防止链路或节点故障，可能以非业务消耗方式来保护，像1:1或恢复方案中一样，其中，在主要路径出现故障时，业务发送到备份路径上。
借助于像MPLS中的快速重新路由(FRR)等局部修复方案，或其操作是提供完整的备份树的全局修复方案，几个已知的解决方案解决了此要求。局部修复方案的限制在于在节点故障发生的情况下，树状基础设施需要进行局部修改，因为网络中的一些其它节点需要以不同方式转发业务以弥补故障节点并确保E树服务业务持续性。这能够是难以实现的，要求极其高的复杂度，并导致更长的恢复时间。另外，在故障状况期间，业务重复是可能的。除实际上需要配置可能极高数量的备选路径以避免单点故障有关的问题外，FRR的主要限制在于其必需的局部修改性质，这尤其不是很好地适合于可能重要的树状基础设施。
在全局修复方案的情况下，无论在活动树状基础设施中故障状况在何处，是什么，与E树服务有关的所有业务被转换到备份树。对于出口节点，这能够变得特别有问题，因为即使转换时间保持到最小，所有此类节点也将看到对业务的影响，甚至远离故障发生处的那些节点。对此类情形进一步添加复杂度，像例如IPTV情况下的IGMP等E树特定控制平面协议能遇到困难，并且可能需要在允许业务再次正常转发前在备份树上恢复更新信息。这能导致甚至更长的时间用于保护方案最终收敛和返回正常操作。
发明内容
根据本发明的一方面，提供一种在跨通信网络的路径上的故障情况中在该网络中重新路由业务的方法。该方法包括确定位于故障与网络入口节点之间的第一节点是否能够将业务转换到避免故障的备选路径。如果确定第一节点不具如此能力，则确定位于第一节点上游的第二节点是否能将业务转换到避免故障的备选路径。
根据本发明的另一方面，提供一种通信网络，该通信网络包括通过相应链路连接的多个节点以形成跨网络的用于业务的路径。节点包括配置成确定故障在重新路由选择节点与网络出口节点之间已发生的至少一个重新路由选择节点，并且重新路由选择节点配置成确定它是否能将业务转换到备选路径上以避免故障。如果它不能如此，则重新路由选择节点配置成促使故障通知信号发送到上游节点，以及上游节点配置成确定它是否能将业务转换到备选路径以避免故障。
根据本发明的另外方面，提供一种用于在通信网络中使用的节点。该节点包括配置成确定故障在网络中已发生以及配置成确定它是否能促使业务转换到备选路径的处理器。在处理器确定它不具如此能力的情况中，处理器配置成促使故障通知信号被传送以用于由第二节点接收。
根据本发明仍有的另外方面，提供一种配置通信网络在跨网络的路径中发生故障的情况中提供至少一个备选路径的方法。该方法包括配置网络的至少一个重新路由选择节点确定故障已发生，以及配置所述至少一个节点以确定它是否能将业务转换到备选路径以避免故障。该方法还包括配置节点，使得如果节点确定它不能如此，则节点将故障通知信号发布到另一节点。
根据本发明的另一方面，提供配置节点的机器可读指令，所述指令包括促使节点的处理器确定在节点要位于其中的通信网络中故障已发生的指令、促使处理器确定节点是否能提供转换以将业务转移到备选路径上以避免故障的指令、以及如果确定节点不具如此能力则促使处理器使节点发布故障通知信号的指令。
附图说明
现在将仅借助于示例来描述本发明的各种实施例，其中：
图1到4示出一通信网络，
图1a是通信网络节点，
图5是流程图，以及
图6是流程图。
具体实施方式
图1中示出配置成实现本发明的一实施例的网络1。网络1包括网状网络，并且树状结构已识别和配置。从广义上来说，网络1包括示为圆形要素的多个节点和在节点之间提供通信的链路，链路示为连接节点的线条。根节点是负责网络1内E树服务的分发的节点，并且可称为网络入口节点，由字母“R”表示。网络1还包括多个叶或出口节点，这些节点是附连到E树服务的目的地的节点，并且每个由字母“L”表示。网络的每个节点包括配置成促使接收业务在要求时被转发的处理器。例如，如图1a中所示，节点4包括处理器80。
网络1提供活动树结构以支持E树服务和相关联备用树结构。备用树结构布置成以可称为“分形的”方式来使用。这意味着在活动树中创建某个类型的层次结构，使得有可能识别能对故障状况自动反应的子树，而无需将故障状况通知到整个树的根节点以便将与E树服务有关的所有业务转换到备用树上。活动树结构和备用树结构(均包括多个子树)在配置网络时或者在需要支持的服务必须展开时识别。活动和备用树结构与子树结构之间的路径分集必须进行配置以便将单点故障限制到最小数量或实际上消除单点故障。两个逻辑上不相交的树能始终得到识别，每个由多个子树组成。正如下面将描述的，在故障的情况下，尽可能靠近故障本身来“修复”树，仅在最适当的子树层(如果有)而不必在整个树层(这将仅在无子树能够处理特定故障时发生)来执行保护转换操作。这样，业务影响仅局限于最小和不可避免的数量的叶节点，而不必局限到整个树。
图1示出正常工作状况中的网络1。树包括两个主要部分，其链路通过加粗箭头示出，由网络提供。如图1中能容易看到的，这两个部分是左子树部分和右子树部分。正如下面将描述的，树的一些节点被配置为将业务路由到备选路径以避免故障的重新路由选择节点。
在图2中，在3示出的故障状况在网络1中对附连到叶节点2的链路13已发生。树的此部分已配置为子树，因为由于网络1的物理拓扑原因，它能自动从包括图2中所示故障3的故障范围自动恢复。节点4用作重新路由选择节点，它是负责将业务从活动子树(即，正常操作状况下使用的子树)转换到备用子树的节点，并且能称为是该特定子树的根。重新路由选择节点是已配置成无论何时节点检测到下游故障或者它收到下游节点关于故障事件的通知均能转换到备用备选路径(即，子树)的节点。该节点的责任包括在该节点本身能执行转换以将业务从下游故障转移离开到备选路径的所有那些情况下，滤除向树的上游(即向根节点6，以及在故障与节点6之间)输送的故障通知。这样，处理故障的反应能保持为尽可能在故障局部，并且不直接涉及转换操作的其它(上游)节点将不知道有关故障的任何情况。
在确定下游故障已发生时，重新路由选择节点4将目的地为叶节点2的业务转换到通过链路14发送到叶节点10，并且叶节点10促使业务通过链路15发送到叶节点2。
由于节点4执行的子树转换，整个树已无需已知故障，并且除示为“保护子树”的圆圈中三个节点2、4和10外，叶的所有节点未看到E树业务的增大。
在图3中，不同的故障状况已发生。在此情况下，它是在30示出的节点4的故障。能够对图2的故障做出反应并从其恢复的备用子树不能处理此故障状况，因此，解决该问题必须更靠近整个树的根节点6来实现。这相当于说，包括图2中提及的子树的更大的子树必须采取动作以从故障恢复。可称为更大子树的根节点的图3中所示的重新路由选择节点20得到通知，并且操作以将业务转换到相关的备用子树。重新路由选择节点20借助于通过链路11从注意到故障的节点8发送的故障通知信号来确定故障已发生。要注意，此处节点8不是重新路由选择节点，并且因此节点8操作以将故障信号转发到上游节点，节点20。在接收信号时，节点20配置成将收到的业务跨链路27转换到节点21，节点21配置成将业务跨链路28发送到节点22，节点22配置成将业务跨链路29发送到节点10，以及节点10配置成将业务跨链路15发送到叶节点2。
又一故障状况在图4中示出。与上述故障状况相比，该故障更靠近整个树的根节点6发生，并且图3中所示的子树不能处理该故障。应明白，如图4中所示，更大子树(如果可用)必须对此故障做出反应。在50示出的故障在连接节点20和31的链路36中已发生。在确定故障已发生时，(重新路由选择)节点31配置成将业务转换到备选路径上以到达叶节点2。如图4中所示，备选路径包括节点32、33、34、35、28及10和链路37、38、39、40、41、29及15。应明白，如图4中所示，更大子树(如果可用)必须对此故障做出反应。
如果没有子树能够有效地从故障状况恢复，则整个树可涉及保护转换，并且在该情况下，整个树的根节点6执行必需的转换以将业务转移到备选路径上。
还将理解，上面已讨论的所有故障状况对整个树的右端侧部分上的叶节点无影响。
将理解，提供备选路径中涉及的那些节点在初始设置过程中适当地配置，以便到达那些节点的转移业务发送到备选路径的下一节点。这可在初始设置过程中通过适当配置每个节点的转发表而实现。
在上述三个故障状况中，已提及树基础设施中在不同层的三个重新路由选择节点4、20和31。每个那些节点对应于可称为三个保护子树(即，每个子树包括活动和备用树)的相应子根节点，并且在提供备选路径方面起到特殊作用。
重新路由选择节点负责两个可能的动作过程：
-借助于转换操作来提供故障恢复，没有向上游节点的进一步通知信号
或者
-通过发送故障通知信号，将保护委托到更高子树。
要注意，故障通知信号向树的上游输送，因为这允许重新路由选择方法的有效实现。假设重新路由选择节点不在故障状况中，它们负责确定它们响应故障状况而接收的故障状况信号(然而，它们可还或备选地直接检测故障状况)是否能通过将业务转换到它们是其根的备用子树上而局部地修复，或者它们是否转而需要将故障通知信号转发到树的更高层，更高层能够是更大的子树(其包括它们自己的子树)或整个树。
故障通知信号能方便地使用诸如操作管理和维护(OAM)分组或控制平面协议(也取决于已用于CO-PS网络的实际技术)等已知技术或通过专有消息集来实现。
图5是示出网络1实现的总体重新路由选择方法的流程图。在100，故障在网络中已发生。在步骤101，节点检测到该故障。如果节点是重新路由选择节点，则过程继续到步骤104。如果节点不是重新路由选择节点，则如在步骤103所示，向上游发送故障通知信号。在到达重新路由选择节点时，如在步骤104所示，节点确定它是否能通过将业务转换到备选路径而从故障恢复。如果它能，则如在步骤105所示，实现转换操作(以便从故障恢复)，并且无向上游发送到另一节点的故障通知信号。然而，如果重新路由选择节点不能从故障恢复，则在步骤106，确定节点实际上是否是树的根节点。如果该节点是根节点，则不相交保护路径不可用。如果该节点不是根节点，则过程返回到步骤103。
图6是重新路由选择节点采取的步骤的流程图。在200，故障通知信号由下游节点发送到重新路由选择节点。在接收信号时，步骤201要求重新路由选择节点确定节点是否能通过将业务转换到备选路径而从故障恢复。如果重新路由选择节点确定它能够如此，则节点执行步骤202以将业务转移到备选路径。这导致结果203。如果重新路由选择节点确定它不能如此，则如在步骤204和205所示，节点不执行转换操作以将业务转移到备选路径，相反，它将故障通知信号发送到上游节点。从重新路由选择节点的角度而言，这导致结果206。要注意，重新路由选择节点为什么可能不能将业务转换到备选路径上的原因是形成连接到该节点的备用树的部分的链路可能有故障，或者在该链路的另一端的另一节点可能有故障。在该情形下，将根据图5中所示步骤来寻找上游的重新路由选择节点。将理解，重新路由选择节点能借助于机器可读指令来适当地配置，而无论以信号、数据结构还是软件产品的形式。
网络1有许多优点。故障恢复能够由靠近故障点的每个子树来执行，以便只有网络的最少量的组件受重新路由选择方法的影响。在影响其中保护将在局部要求高复杂度的树的节点或部分的故障情况下，故障恢复“提升”到更高层子树，在更高层子树中，能简单地通过备选路径而绕过故障。这可视为由分层组织的子树集合组成的树状基础设施。期望行为能确定性地实现，因为重新路由选择节点配置成在预定1:1方式中对故障做出反应，即，在故障情况下，业务从活动子树转换到备用子树。
以此方式，通过适当配置受保护树和受保护子树，由于重新路由选择方法，由故障造成的对E树服务的业务干扰被降到最低，并且尽可能地限于局部(或限于网络运营商认为有益的局部)。假设每个备用子树在任何故障状况之前配置，转移业务到备选路径的转换操作能够极快地发生。与要求节点在故障发生时“匆忙地”重新配置的已知局部修复方案相比，这特别有利。有利的是，网络1执行的重新路由选择方法不限于任何特定的面向连接的技术。
网络1中重新路由选择方法提供的路径保护有利地未将其应用限于任何特定的面向连接的技术。
要注意，即使在单点故障的情况下，由于物理拓扑约束，活动和备用树和子树在逻辑上保持分隔，以便不存在业务的错误转发的风险。
将理解，虽然上述网络实现多播解决方案，但网络1实现的重新路由选择业务的方法也可适用于单播情形。

Claims (16)

1.一种在跨通信网络(1)的路径上的故障(3)的情况中在所述网络中重新路由业务的方法，所述方法包括，确定位于所述故障与网络入口节点(6)之间的第一节点(4)是否能将业务转换到避免所述故障的备选路径，并且如果确定所述第一节点不具有如此能力，则确定位于所述第一节点上游的第二节点(8)是否能将业务转换到避免所述故障的备选路径。
2.如权利要求1所述的方法，其中在所述第二节点(8)确定它不具如此能力的情况下，至少一个另外节点确定它是否能将所述业务转换到备选路径。
3.如权利要求1或2所述的方法，其中所述第一节点(4)与所述故障(3)相邻。
4.如权利要求1、2或3所述的方法，其中所述第一节点(4)确定所述故障(3)已发生。
5.如任何前面权利要求所述的方法，其中所述第二节点(8)与所述第一节点相邻。
6.如任何前面权利要求所述的方法，其中如果所述第一节点(4)确定它不能将业务转换到备选路径，则所述第一节点发送故障通知信号到所述第二节点(8)。
7.如任何前面权利要求所述的方法，其中如果所述第一节点(4)确定它能将业务转换到备选路径，则故障通知信号不发送到所述第二节点(8)。
8.一种通信网络(1)，包括通过相应链路(11，12，13，14，15)连接的多个节点(4，6，8，10)以形成跨所述网络的用于业务的路径，所述节点包括配置成确定故障(3)已在重新路由选择节点与网络出口节点(2)之间发生的至少一个重新路由选择节点(4)，并且所述重新路由选择节点配置成确定它是否能将业务转换到备选路径上以避免所述故障，并且如果它不能如此，则所述重新路由选择节点配置成促使故障通知信号发送到上游节点(8)，以及所述上游节点配置成确定它是否能将业务转换到备选路径以避免所述故障。
9.如权利要求8所述的通信网络，其中所述至少一个重新路由选择节点(4)配置成将业务转换到至少一个备选路径。
10.如权利要求8或权利要求9所述的通信网络，其中所述至少一个重新路由选择节点(4)连接到至少三个链路(13，8，14)。
11.如权利要求8到10的任一项所述的通信网络，其中如果所述至少一个重新路由选择节点(4)确定它能将业务转换到备选路径，则所述重新路由选择节点配置成不发送故障通知信号到所述第二节点(8)。
12.如权利要求8到11的任一项所述的通信网络，它是面向连接的网络。
13.一种用于在通信网络(1)中使用的节点(4)，所述节点包括配置成确定故障(3)在所述网络中已发生以及配置成确定它是否能促使业务转换到备选路径的处理器(80)，并且在所述处理器确定它不具有如此能力的情况中，所述处理器配置成促使故障通知信号被传送以用于由第二节点(8胺收。
14.如权利要求13所述的节点(4)，其中如果所述处理器(80)确定所述节点能促使业务转换到另一路径，则所述处理器配置成促使所述故障通知信号不发送。
15.一种配置通信网络(1)在跨所述网络的路径中发生故障(3)的情况中提供至少一个备选路径的方法，所述方法包括配置所述网络的至少一个重新路由选择节点(4)以确定所述故障已发生，以及配置所述至少一个节点以确定它是否能将所述业务转换到备选路径以避免所述故障，以及配置所述节点，使得如果所述节点确定它不能如此，则所述节点将故障通知信号发布到另一节点(8)。
16.配置节点(4)的机器可读指令，所述指令包括促使所述节点的处理器(80)确定故障(3)在所述节点要位于其中的通信网络中已发生的指令、促使处理器确定所述节点是否能提供转换以将业务转移到备选路径上以避免所述故障的指令、以及如果确定所述节点不具有如此能力则促使所述处理器使所述节点发布故障通知信号的指令。
CN2008801304030A 2008-05-12 2008-07-08 在通信网络中重新路由业务 Pending CN102090029A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP08156047 2008-05-12
EP08156047.6 2008-05-12
PCT/EP2008/058844 WO2009138133A1 (en) 2008-05-12 2008-07-08 Re-routing traffic in a communications network

Publications (1)

Publication Number Publication Date
CN102090029A true CN102090029A (zh) 2011-06-08

Family

ID=39671692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2008801304030A Pending CN102090029A (zh) 2008-05-12 2008-07-08 在通信网络中重新路由业务

Country Status (4)

Country Link
US (1) US9391874B2 (zh)
EP (1) EP2277289A1 (zh)
CN (1) CN102090029A (zh)
WO (1) WO2009138133A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105704021A (zh) * 2016-01-22 2016-06-22 中国人民解放军国防科学技术大学 一种基于弹性标签的重路由方法
CN106130895A (zh) * 2016-08-18 2016-11-16 中国联合网络通信集团有限公司 Sdn网络故障的重路由方法及装置
CN107104895A (zh) * 2016-02-23 2017-08-29 迈络思科技Tlv有限公司 自适应路由通知的单播转发

Families Citing this family (190)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8782654B2 (en) 2004-03-13 2014-07-15 Adaptive Computing Enterprises, Inc. Co-allocating a reservation spanning different compute resources types
WO2005089239A2 (en) 2004-03-13 2005-09-29 Cluster Resources, Inc. System and method of providing a self-optimizing reservation in space of compute resources
US20070266388A1 (en) 2004-06-18 2007-11-15 Cluster Resources, Inc. System and method for providing advanced reservations in a compute environment
US8176490B1 (en) 2004-08-20 2012-05-08 Adaptive Computing Enterprises, Inc. System and method of interfacing a workload manager and scheduler with an identity manager
WO2006053093A2 (en) 2004-11-08 2006-05-18 Cluster Resources, Inc. System and method of providing system jobs within a compute environment
US8863143B2 (en) 2006-03-16 2014-10-14 Adaptive Computing Enterprises, Inc. System and method for managing a hybrid compute environment
US9231886B2 (en) 2005-03-16 2016-01-05 Adaptive Computing Enterprises, Inc. Simple integration of an on-demand compute environment
ES2614751T3 (es) 2005-04-07 2017-06-01 Iii Holdings 12, Llc Acceso bajo demanda a recursos informáticos
US8041773B2 (en) 2007-09-24 2011-10-18 The Research Foundation Of State University Of New York Automatic clustering for self-organizing grids
WO2010066300A1 (en) * 2008-12-11 2010-06-17 Telefonaktiebolaget Lm Ericsson (Publ) Communications network
CN102388580B (zh) * 2009-02-10 2016-10-26 瑞典爱立信有限公司 用于保护通信网络的方法和设备
US8599863B2 (en) 2009-10-30 2013-12-03 Calxeda, Inc. System and method for using a multi-protocol fabric module across a distributed server interconnect fabric
US9876735B2 (en) 2009-10-30 2018-01-23 Iii Holdings 2, Llc Performance and power optimized computer system architectures and methods leveraging power optimized tree fabric interconnect
US9069929B2 (en) 2011-10-31 2015-06-30 Iii Holdings 2, Llc Arbitrating usage of serial port in node card of scalable and modular servers
US9054990B2 (en) 2009-10-30 2015-06-09 Iii Holdings 2, Llc System and method for data center security enhancements leveraging server SOCs or server fabrics
US20130107444A1 (en) 2011-10-28 2013-05-02 Calxeda, Inc. System and method for flexible storage and networking provisioning in large scalable processor installations
US20110103391A1 (en) 2009-10-30 2011-05-05 Smooth-Stone, Inc. C/O Barry Evans System and method for high-performance, low-power data center interconnect fabric
US9077654B2 (en) 2009-10-30 2015-07-07 Iii Holdings 2, Llc System and method for data center security enhancements leveraging managed server SOCs
US9465771B2 (en) 2009-09-24 2016-10-11 Iii Holdings 2, Llc Server on a chip and node cards comprising one or more of same
US11720290B2 (en) 2009-10-30 2023-08-08 Iii Holdings 2, Llc Memcached server functionality in a cluster of data processing nodes
US9311269B2 (en) 2009-10-30 2016-04-12 Iii Holdings 2, Llc Network proxy for high-performance, low-power data center interconnect fabric
US9680770B2 (en) 2009-10-30 2017-06-13 Iii Holdings 2, Llc System and method for using a multi-protocol fabric module across a distributed server interconnect fabric
US10877695B2 (en) 2009-10-30 2020-12-29 Iii Holdings 2, Llc Memcached server functionality in a cluster of data processing nodes
US9648102B1 (en) 2012-12-27 2017-05-09 Iii Holdings 2, Llc Memcached server functionality in a cluster of data processing nodes
US8565243B2 (en) * 2010-11-29 2013-10-22 Red Hat, Inc. Method and apparatus for using a gossip protocol to communicate across network partitions
US8743679B2 (en) * 2011-02-28 2014-06-03 Cisco Technology, Inc. Client diversity policy sharing with the transport layer
WO2013069629A1 (ja) * 2011-11-11 2013-05-16 日本電気株式会社 無線伝送装置、障害情報転送方法及び障害情報通知方法
US8638659B2 (en) * 2012-06-01 2014-01-28 Telefonaktiebolaget L M Ericsson (Publ) Enhancements to PIM fast re-route with downstream notification packets
US9628285B2 (en) 2012-06-01 2017-04-18 Telefonaktiebolaget L M Ericsson (Publ) Increasing failure coverage of MoFRR with dataplane notifications
US8913482B2 (en) 2012-06-01 2014-12-16 Telefonaktiebolaget L M Ericsson (Publ) Enhancements to PIM fast re-route with upstream activation packets
US8824276B2 (en) 2012-06-01 2014-09-02 Telefonaktiebolaget L M Ericsson (Publ) Increasing failure coverage of MOFRR with dataplane notifications
US9113347B2 (en) 2012-12-05 2015-08-18 At&T Intellectual Property I, Lp Backhaul link for distributed antenna system
US9634940B2 (en) * 2013-01-31 2017-04-25 Mellanox Technologies, Ltd. Adaptive routing using inter-switch notifications
JP5632077B1 (ja) * 2013-03-22 2014-11-26 株式会社クラレ 透明性に優れる組成物
US9999038B2 (en) 2013-05-31 2018-06-12 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9525524B2 (en) 2013-05-31 2016-12-20 At&T Intellectual Property I, L.P. Remote distributed antenna system
US9548960B2 (en) 2013-10-06 2017-01-17 Mellanox Technologies Ltd. Simplified packet routing
US8897697B1 (en) 2013-11-06 2014-11-25 At&T Intellectual Property I, Lp Millimeter-wave surface-wave communications
US9729473B2 (en) 2014-06-23 2017-08-08 Mellanox Technologies, Ltd. Network high availability using temporary re-routing
US9806994B2 (en) 2014-06-24 2017-10-31 Mellanox Technologies, Ltd. Routing via multiple paths with efficient traffic distribution
US9699067B2 (en) 2014-07-22 2017-07-04 Mellanox Technologies, Ltd. Dragonfly plus: communication over bipartite node groups connected by a mesh network
US9768833B2 (en) 2014-09-15 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for sensing a condition in a transmission medium of electromagnetic waves
US10063280B2 (en) 2014-09-17 2018-08-28 At&T Intellectual Property I, L.P. Monitoring and mitigating conditions in a communication network
US9615269B2 (en) 2014-10-02 2017-04-04 At&T Intellectual Property I, L.P. Method and apparatus that provides fault tolerance in a communication network
US9685992B2 (en) 2014-10-03 2017-06-20 At&T Intellectual Property I, L.P. Circuit panel network and methods thereof
US9503189B2 (en) 2014-10-10 2016-11-22 At&T Intellectual Property I, L.P. Method and apparatus for arranging communication sessions in a communication system
US9762289B2 (en) 2014-10-14 2017-09-12 At&T Intellectual Property I, L.P. Method and apparatus for transmitting or receiving signals in a transportation system
US9973299B2 (en) 2014-10-14 2018-05-15 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a mode of communication in a communication network
US9520945B2 (en) 2014-10-21 2016-12-13 At&T Intellectual Property I, L.P. Apparatus for providing communication services and methods thereof
US9312919B1 (en) 2014-10-21 2016-04-12 At&T Intellectual Property I, Lp Transmission device with impairment compensation and methods for use therewith
US9769020B2 (en) 2014-10-21 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for responding to events affecting communications in a communication network
US9577306B2 (en) 2014-10-21 2017-02-21 At&T Intellectual Property I, L.P. Guided-wave transmission device and methods for use therewith
US9627768B2 (en) 2014-10-21 2017-04-18 At&T Intellectual Property I, L.P. Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9653770B2 (en) 2014-10-21 2017-05-16 At&T Intellectual Property I, L.P. Guided wave coupler, coupling module and methods for use therewith
US9780834B2 (en) 2014-10-21 2017-10-03 At&T Intellectual Property I, L.P. Method and apparatus for transmitting electromagnetic waves
US9997819B2 (en) 2015-06-09 2018-06-12 At&T Intellectual Property I, L.P. Transmission medium and method for facilitating propagation of electromagnetic waves via a core
US9544006B2 (en) 2014-11-20 2017-01-10 At&T Intellectual Property I, L.P. Transmission device with mode division multiplexing and methods for use therewith
US9742462B2 (en) 2014-12-04 2017-08-22 At&T Intellectual Property I, L.P. Transmission medium and communication interfaces and methods for use therewith
US10340573B2 (en) 2016-10-26 2019-07-02 At&T Intellectual Property I, L.P. Launcher with cylindrical coupling device and methods for use therewith
US9461706B1 (en) 2015-07-31 2016-10-04 At&T Intellectual Property I, Lp Method and apparatus for exchanging communication signals
US9800327B2 (en) 2014-11-20 2017-10-24 At&T Intellectual Property I, L.P. Apparatus for controlling operations of a communication device and methods thereof
US9954287B2 (en) 2014-11-20 2018-04-24 At&T Intellectual Property I, L.P. Apparatus for converting wireless signals and electromagnetic waves and methods thereof
US10243784B2 (en) 2014-11-20 2019-03-26 At&T Intellectual Property I, L.P. System for generating topology information and methods thereof
US10009067B2 (en) 2014-12-04 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for configuring a communication interface
US10144036B2 (en) 2015-01-30 2018-12-04 At&T Intellectual Property I, L.P. Method and apparatus for mitigating interference affecting a propagation of electromagnetic waves guided by a transmission medium
US9876570B2 (en) 2015-02-20 2018-01-23 At&T Intellectual Property I, Lp Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith
US9749013B2 (en) 2015-03-17 2017-08-29 At&T Intellectual Property I, L.P. Method and apparatus for reducing attenuation of electromagnetic waves guided by a transmission medium
US9894005B2 (en) 2015-03-31 2018-02-13 Mellanox Technologies, Ltd. Adaptive routing controlled by source node
US10224981B2 (en) 2015-04-24 2019-03-05 At&T Intellectual Property I, Lp Passive electrical coupling device and methods for use therewith
US9705561B2 (en) 2015-04-24 2017-07-11 At&T Intellectual Property I, L.P. Directional coupling device and methods for use therewith
US9948354B2 (en) 2015-04-28 2018-04-17 At&T Intellectual Property I, L.P. Magnetic coupling device with reflective plate and methods for use therewith
US9793954B2 (en) 2015-04-28 2017-10-17 At&T Intellectual Property I, L.P. Magnetic coupling device and methods for use therewith
US9871282B2 (en) 2015-05-14 2018-01-16 At&T Intellectual Property I, L.P. At least one transmission medium having a dielectric surface that is covered at least in part by a second dielectric
US9748626B2 (en) 2015-05-14 2017-08-29 At&T Intellectual Property I, L.P. Plurality of cables having different cross-sectional shapes which are bundled together to form a transmission medium
US9490869B1 (en) 2015-05-14 2016-11-08 At&T Intellectual Property I, L.P. Transmission medium having multiple cores and methods for use therewith
US10650940B2 (en) 2015-05-15 2020-05-12 At&T Intellectual Property I, L.P. Transmission medium having a conductive material and methods for use therewith
US9917341B2 (en) 2015-05-27 2018-03-13 At&T Intellectual Property I, L.P. Apparatus and method for launching electromagnetic waves and for modifying radial dimensions of the propagating electromagnetic waves
US9866309B2 (en) 2015-06-03 2018-01-09 At&T Intellectual Property I, Lp Host node device and methods for use therewith
US10103801B2 (en) 2015-06-03 2018-10-16 At&T Intellectual Property I, L.P. Host node device and methods for use therewith
US9912381B2 (en) 2015-06-03 2018-03-06 At&T Intellectual Property I, Lp Network termination and methods for use therewith
US10812174B2 (en) 2015-06-03 2020-10-20 At&T Intellectual Property I, L.P. Client node device and methods for use therewith
US9913139B2 (en) 2015-06-09 2018-03-06 At&T Intellectual Property I, L.P. Signal fingerprinting for authentication of communicating devices
US9608692B2 (en) 2015-06-11 2017-03-28 At&T Intellectual Property I, L.P. Repeater and methods for use therewith
US9820146B2 (en) 2015-06-12 2017-11-14 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9667317B2 (en) 2015-06-15 2017-05-30 At&T Intellectual Property I, L.P. Method and apparatus for providing security using network traffic adjustments
US9865911B2 (en) 2015-06-25 2018-01-09 At&T Intellectual Property I, L.P. Waveguide system for slot radiating first electromagnetic waves that are combined into a non-fundamental wave mode second electromagnetic wave on a transmission medium
US9509415B1 (en) 2015-06-25 2016-11-29 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a fundamental wave mode on a transmission medium
US9640850B2 (en) 2015-06-25 2017-05-02 At&T Intellectual Property I, L.P. Methods and apparatus for inducing a non-fundamental wave mode on a transmission medium
US9628116B2 (en) 2015-07-14 2017-04-18 At&T Intellectual Property I, L.P. Apparatus and methods for transmitting wireless signals
US9882257B2 (en) 2015-07-14 2018-01-30 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9847566B2 (en) 2015-07-14 2017-12-19 At&T Intellectual Property I, L.P. Method and apparatus for adjusting a field of a signal to mitigate interference
US10205655B2 (en) 2015-07-14 2019-02-12 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array and multiple communication paths
US9722318B2 (en) 2015-07-14 2017-08-01 At&T Intellectual Property I, L.P. Method and apparatus for coupling an antenna to a device
US10170840B2 (en) 2015-07-14 2019-01-01 At&T Intellectual Property I, L.P. Apparatus and methods for sending or receiving electromagnetic signals
US10044409B2 (en) 2015-07-14 2018-08-07 At&T Intellectual Property I, L.P. Transmission medium and methods for use therewith
US10148016B2 (en) 2015-07-14 2018-12-04 At&T Intellectual Property I, L.P. Apparatus and methods for communicating utilizing an antenna array
US10341142B2 (en) 2015-07-14 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an uninsulated conductor
US10320586B2 (en) 2015-07-14 2019-06-11 At&T Intellectual Property I, L.P. Apparatus and methods for generating non-interfering electromagnetic waves on an insulated transmission medium
US10033108B2 (en) 2015-07-14 2018-07-24 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave having a wave mode that mitigates interference
US9853342B2 (en) 2015-07-14 2017-12-26 At&T Intellectual Property I, L.P. Dielectric transmission medium connector and methods for use therewith
US10090606B2 (en) 2015-07-15 2018-10-02 At&T Intellectual Property I, L.P. Antenna system with dielectric array and methods for use therewith
US9608740B2 (en) 2015-07-15 2017-03-28 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9793951B2 (en) 2015-07-15 2017-10-17 At&T Intellectual Property I, L.P. Method and apparatus for launching a wave mode that mitigates interference
US9912027B2 (en) 2015-07-23 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for exchanging communication signals
US9948333B2 (en) 2015-07-23 2018-04-17 At&T Intellectual Property I, L.P. Method and apparatus for wireless communications to mitigate interference
US9749053B2 (en) 2015-07-23 2017-08-29 At&T Intellectual Property I, L.P. Node device, repeater and methods for use therewith
US9871283B2 (en) 2015-07-23 2018-01-16 At&T Intellectual Property I, Lp Transmission medium having a dielectric core comprised of plural members connected by a ball and socket configuration
US9735833B2 (en) 2015-07-31 2017-08-15 At&T Intellectual Property I, L.P. Method and apparatus for communications management in a neighborhood network
US9967173B2 (en) 2015-07-31 2018-05-08 At&T Intellectual Property I, L.P. Method and apparatus for authentication and identity management of communicating devices
US9904535B2 (en) 2015-09-14 2018-02-27 At&T Intellectual Property I, L.P. Method and apparatus for distributing software
US10079661B2 (en) 2015-09-16 2018-09-18 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having a clock reference
US10009063B2 (en) 2015-09-16 2018-06-26 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an out-of-band reference signal
US10136434B2 (en) 2015-09-16 2018-11-20 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having an ultra-wideband control channel
US9769128B2 (en) 2015-09-28 2017-09-19 At&T Intellectual Property I, L.P. Method and apparatus for encryption of communications over a network
US9729197B2 (en) 2015-10-01 2017-08-08 At&T Intellectual Property I, L.P. Method and apparatus for communicating network management traffic over a network
US9876264B2 (en) 2015-10-02 2018-01-23 At&T Intellectual Property I, Lp Communication system, guided wave switch and methods for use therewith
US10355367B2 (en) 2015-10-16 2019-07-16 At&T Intellectual Property I, L.P. Antenna structure for exchanging wireless signals
FR3044849A1 (fr) * 2015-12-07 2017-06-09 Orange Procede anti-micro-boucle pendant la convergence de tables de commutation
US9973435B2 (en) 2015-12-16 2018-05-15 Mellanox Technologies Tlv Ltd. Loopback-free adaptive routing
US10178029B2 (en) 2016-05-11 2019-01-08 Mellanox Technologies Tlv Ltd. Forwarding of adaptive routing notifications
US9912419B1 (en) 2016-08-24 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for managing a fault in a distributed antenna system
US9860075B1 (en) 2016-08-26 2018-01-02 At&T Intellectual Property I, L.P. Method and communication node for broadband distribution
US10291311B2 (en) 2016-09-09 2019-05-14 At&T Intellectual Property I, L.P. Method and apparatus for mitigating a fault in a distributed antenna system
US11032819B2 (en) 2016-09-15 2021-06-08 At&T Intellectual Property I, L.P. Method and apparatus for use with a radio distributed antenna system having a control channel reference signal
US10340600B2 (en) 2016-10-18 2019-07-02 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via plural waveguide systems
US10135147B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via an antenna
US10135146B2 (en) 2016-10-18 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for launching guided waves via circuits
US9876605B1 (en) 2016-10-21 2018-01-23 At&T Intellectual Property I, L.P. Launcher and coupling system to support desired guided wave mode
US9991580B2 (en) 2016-10-21 2018-06-05 At&T Intellectual Property I, L.P. Launcher and coupling system for guided wave mode cancellation
US10811767B2 (en) 2016-10-21 2020-10-20 At&T Intellectual Property I, L.P. System and dielectric antenna with convex dielectric radome
US10374316B2 (en) 2016-10-21 2019-08-06 At&T Intellectual Property I, L.P. System and dielectric antenna with non-uniform dielectric
US10312567B2 (en) 2016-10-26 2019-06-04 At&T Intellectual Property I, L.P. Launcher with planar strip antenna and methods for use therewith
US10225025B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Method and apparatus for detecting a fault in a communication system
US10291334B2 (en) 2016-11-03 2019-05-14 At&T Intellectual Property I, L.P. System for detecting a fault in a communication system
US10224634B2 (en) 2016-11-03 2019-03-05 At&T Intellectual Property I, L.P. Methods and apparatus for adjusting an operational characteristic of an antenna
US10498044B2 (en) 2016-11-03 2019-12-03 At&T Intellectual Property I, L.P. Apparatus for configuring a surface of an antenna
US10340603B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Antenna system having shielded structural configurations for assembly
US10090594B2 (en) 2016-11-23 2018-10-02 At&T Intellectual Property I, L.P. Antenna system having structural configurations for assembly
US10535928B2 (en) 2016-11-23 2020-01-14 At&T Intellectual Property I, L.P. Antenna system and methods for use therewith
US10340601B2 (en) 2016-11-23 2019-07-02 At&T Intellectual Property I, L.P. Multi-antenna system and methods for use therewith
US10178445B2 (en) 2016-11-23 2019-01-08 At&T Intellectual Property I, L.P. Methods, devices, and systems for load balancing between a plurality of waveguides
US10305190B2 (en) 2016-12-01 2019-05-28 At&T Intellectual Property I, L.P. Reflecting dielectric antenna system and methods for use therewith
US10361489B2 (en) 2016-12-01 2019-07-23 At&T Intellectual Property I, L.P. Dielectric dish antenna system and methods for use therewith
US10694379B2 (en) 2016-12-06 2020-06-23 At&T Intellectual Property I, L.P. Waveguide system with device-based authentication and methods for use therewith
US10439675B2 (en) 2016-12-06 2019-10-08 At&T Intellectual Property I, L.P. Method and apparatus for repeating guided wave communication signals
US10326494B2 (en) 2016-12-06 2019-06-18 At&T Intellectual Property I, L.P. Apparatus for measurement de-embedding and methods for use therewith
US10135145B2 (en) 2016-12-06 2018-11-20 At&T Intellectual Property I, L.P. Apparatus and methods for generating an electromagnetic wave along a transmission medium
US10755542B2 (en) 2016-12-06 2020-08-25 At&T Intellectual Property I, L.P. Method and apparatus for surveillance via guided wave communication
US10819035B2 (en) 2016-12-06 2020-10-27 At&T Intellectual Property I, L.P. Launcher with helical antenna and methods for use therewith
US10637149B2 (en) 2016-12-06 2020-04-28 At&T Intellectual Property I, L.P. Injection molded dielectric antenna and methods for use therewith
US9927517B1 (en) 2016-12-06 2018-03-27 At&T Intellectual Property I, L.P. Apparatus and methods for sensing rainfall
US10382976B2 (en) 2016-12-06 2019-08-13 At&T Intellectual Property I, L.P. Method and apparatus for managing wireless communications based on communication paths and network device positions
US10727599B2 (en) 2016-12-06 2020-07-28 At&T Intellectual Property I, L.P. Launcher with slot antenna and methods for use therewith
US10020844B2 (en) 2016-12-06 2018-07-10 T&T Intellectual Property I, L.P. Method and apparatus for broadcast communication via guided waves
US10027397B2 (en) 2016-12-07 2018-07-17 At&T Intellectual Property I, L.P. Distributed antenna system and methods for use therewith
US10359749B2 (en) 2016-12-07 2019-07-23 At&T Intellectual Property I, L.P. Method and apparatus for utilities management via guided wave communication
US10243270B2 (en) 2016-12-07 2019-03-26 At&T Intellectual Property I, L.P. Beam adaptive multi-feed dielectric antenna system and methods for use therewith
US10446936B2 (en) 2016-12-07 2019-10-15 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system and methods for use therewith
US10547348B2 (en) 2016-12-07 2020-01-28 At&T Intellectual Property I, L.P. Method and apparatus for switching transmission mediums in a communication system
US9893795B1 (en) 2016-12-07 2018-02-13 At&T Intellectual Property I, Lp Method and repeater for broadband distribution
US10139820B2 (en) 2016-12-07 2018-11-27 At&T Intellectual Property I, L.P. Method and apparatus for deploying equipment of a communication system
US10389029B2 (en) 2016-12-07 2019-08-20 At&T Intellectual Property I, L.P. Multi-feed dielectric antenna system with core selection and methods for use therewith
US10168695B2 (en) 2016-12-07 2019-01-01 At&T Intellectual Property I, L.P. Method and apparatus for controlling an unmanned aircraft
US10938108B2 (en) 2016-12-08 2021-03-02 At&T Intellectual Property I, L.P. Frequency selective multi-feed dielectric antenna system and methods for use therewith
US10530505B2 (en) 2016-12-08 2020-01-07 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves along a transmission medium
US10103422B2 (en) 2016-12-08 2018-10-16 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10069535B2 (en) 2016-12-08 2018-09-04 At&T Intellectual Property I, L.P. Apparatus and methods for launching electromagnetic waves having a certain electric field structure
US10389037B2 (en) 2016-12-08 2019-08-20 At&T Intellectual Property I, L.P. Apparatus and methods for selecting sections of an antenna array and use therewith
US9998870B1 (en) 2016-12-08 2018-06-12 At&T Intellectual Property I, L.P. Method and apparatus for proximity sensing
US10601494B2 (en) 2016-12-08 2020-03-24 At&T Intellectual Property I, L.P. Dual-band communication device and method for use therewith
US9911020B1 (en) 2016-12-08 2018-03-06 At&T Intellectual Property I, L.P. Method and apparatus for tracking via a radio frequency identification device
US10326689B2 (en) 2016-12-08 2019-06-18 At&T Intellectual Property I, L.P. Method and system for providing alternative communication paths
US10777873B2 (en) 2016-12-08 2020-09-15 At&T Intellectual Property I, L.P. Method and apparatus for mounting network devices
US10411356B2 (en) 2016-12-08 2019-09-10 At&T Intellectual Property I, L.P. Apparatus and methods for selectively targeting communication devices with an antenna array
US10916969B2 (en) 2016-12-08 2021-02-09 At&T Intellectual Property I, L.P. Method and apparatus for providing power using an inductive coupling
US10264586B2 (en) 2016-12-09 2019-04-16 At&T Mobility Ii Llc Cloud-based packet controller and methods for use therewith
US9838896B1 (en) 2016-12-09 2017-12-05 At&T Intellectual Property I, L.P. Method and apparatus for assessing network coverage
US10340983B2 (en) 2016-12-09 2019-07-02 At&T Intellectual Property I, L.P. Method and apparatus for surveying remote sites via guided wave communications
US10200294B2 (en) 2016-12-22 2019-02-05 Mellanox Technologies Tlv Ltd. Adaptive routing based on flow-control credits
US9973940B1 (en) 2017-02-27 2018-05-15 At&T Intellectual Property I, L.P. Apparatus and methods for dynamic impedance matching of a guided wave launcher
US10298293B2 (en) 2017-03-13 2019-05-21 At&T Intellectual Property I, L.P. Apparatus of communication utilizing wireless network devices
US10644995B2 (en) 2018-02-14 2020-05-05 Mellanox Technologies Tlv Ltd. Adaptive routing in a box
DE102018203374A1 (de) * 2018-03-07 2019-09-12 Robert Bosch Gmbh Fehlerbaumanalyse für technische Systeme
US11005724B1 (en) 2019-01-06 2021-05-11 Mellanox Technologies, Ltd. Network topology having minimal number of long connections among groups of network elements
US10958567B1 (en) 2019-03-29 2021-03-23 Juniper Networks, Inc. Controlling paths in a network via a centralized controller or network devices
US11575594B2 (en) 2020-09-10 2023-02-07 Mellanox Technologies, Ltd. Deadlock-free rerouting for resolving local link failures using detour paths
US11411911B2 (en) 2020-10-26 2022-08-09 Mellanox Technologies, Ltd. Routing across multiple subnetworks using address mapping
US11552882B2 (en) 2021-03-25 2023-01-10 Mellanox Technologies, Ltd. Efficient propagation of fault routing notifications
US11870682B2 (en) 2021-06-22 2024-01-09 Mellanox Technologies, Ltd. Deadlock-free local rerouting for handling multiple local link failures in hierarchical network topologies
US11765103B2 (en) 2021-12-01 2023-09-19 Mellanox Technologies, Ltd. Large-scale network with high port utilization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2227111A1 (en) * 1997-02-18 1998-08-18 Alcatel Alsthom Compagnie Generale D'electricite Method for rerouting in hierarchically structured networks
CN1541466A (zh) * 2001-06-30 2004-10-27 ��˹��ŵ�� 用于在多跳无线网络中传递分组的设备和方法
CN1708032A (zh) * 2004-05-28 2005-12-14 朗迅科技公司 独立于通信量模式可变性的有效且稳健的路由选择
CN1781290A (zh) * 2003-03-13 2006-05-31 索尼株式会社 无线专用通信系统、终端、终端中的处理方法

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6842430B1 (en) * 1996-10-16 2005-01-11 Koninklijke Philips Electronics N.V. Method for configuring and routing data within a wireless multihop network and a wireless network for implementing the same
US7457233B1 (en) * 1999-07-15 2008-11-25 Juniper Networks, Inc. Method and apparatus for fast reroute in a connection-oriented network
US7315510B1 (en) * 1999-10-21 2008-01-01 Tellabs Operations, Inc. Method and apparatus for detecting MPLS network failures
US6947376B1 (en) * 1999-10-21 2005-09-20 At&T Corp. Local information-based restoration arrangement
US7804767B1 (en) * 1999-10-25 2010-09-28 Tellabs Operations, Inc. Protection/restoration of MPLS networks
WO2002065661A1 (en) * 2001-02-12 2002-08-22 Maple Optical Systems, Inc. System and method for fast-rerouting of data in a data communication network
US7035937B2 (en) * 2001-04-25 2006-04-25 Cornell Research Foundation, Inc. Independent-tree ad hoc multicast routing
US20030063613A1 (en) * 2001-09-28 2003-04-03 Carpini Walter Joseph Label switched communication network and system and method for path restoration
US20050188108A1 (en) * 2002-10-31 2005-08-25 Volera, Inc. Enriched tree for a content distribution network
EP1608111A4 (en) 2003-03-13 2010-11-17 Sony Corp AD HOC RADIO COMMUNICATION SYSTEM, TERMINAL, TERMINAL PROCESSING METHOD, AND TERMINAL METHOD OF EXECUTING THE METHOD
KR100611125B1 (ko) * 2003-05-09 2006-08-10 삼성전자주식회사 애드 혹 네트워크에서 트리구조를 이용한 최적 라우팅경로 설정 장치 및 방법
US20050086469A1 (en) * 2003-10-17 2005-04-21 Microsoft Corporation Scalable, fault tolerant notification method
US7746793B2 (en) * 2004-06-18 2010-06-29 Cisco Technology, Inc. Consistency between MPLS forwarding and control planes
US8422500B2 (en) * 2004-07-02 2013-04-16 Rockstar Consortium Us Lp VLAN support of differentiated services
KR100693052B1 (ko) * 2005-01-14 2007-03-12 삼성전자주식회사 Ｍｐｌｓ 멀티캐스트의 고속 재경로 설정 장치 및 방법
US7398438B2 (en) * 2006-03-30 2008-07-08 Lucent Technologies Inc. Method and apparatus for improved routing in connectionless networks
US8085676B2 (en) * 2006-06-29 2011-12-27 Nortel Networks Limited Method and system for looping back traffic in QIQ ethernet rings and 1:1 protected PBT trunks
KR100799581B1 (ko) * 2006-09-29 2008-01-30 한국전자통신연구원 노드의 트리 구조 네트워크 구성 방법
US8837329B2 (en) * 2007-01-19 2014-09-16 Telefonaktiebolaget L M Ericsson (Publ) Method and system for controlled tree management
CN104270296A (zh) * 2007-10-12 2015-01-07 北方电讯网络有限公司 多点和有根多点保护切换
US7830785B2 (en) * 2008-01-25 2010-11-09 At&T Labs, Inc. System and method for restoration in a multimedia IP network
US20090252033A1 (en) * 2008-04-08 2009-10-08 At&T Knowledge Ventures, L.P. System and method of distributing media content

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2227111A1 (en) * 1997-02-18 1998-08-18 Alcatel Alsthom Compagnie Generale D'electricite Method for rerouting in hierarchically structured networks
CN1541466A (zh) * 2001-06-30 2004-10-27 ��˹��ŵ�� 用于在多跳无线网络中传递分组的设备和方法
CN1781290A (zh) * 2003-03-13 2006-05-31 索尼株式会社 无线专用通信系统、终端、终端中的处理方法
CN1708032A (zh) * 2004-05-28 2005-12-14 朗迅科技公司 独立于通信量模式可变性的有效且稳健的路由选择

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105704021A (zh) * 2016-01-22 2016-06-22 中国人民解放军国防科学技术大学 一种基于弹性标签的重路由方法
CN105704021B (zh) * 2016-01-22 2019-04-12 中国人民解放军国防科学技术大学 一种基于弹性标签的重路由方法
CN107104895A (zh) * 2016-02-23 2017-08-29 迈络思科技Tlv有限公司 自适应路由通知的单播转发
CN107104895B (zh) * 2016-02-23 2021-08-13 迈络思科技Tlv有限公司 自适应路由通知的单播转发
CN106130895A (zh) * 2016-08-18 2016-11-16 中国联合网络通信集团有限公司 Sdn网络故障的重路由方法及装置
CN106130895B (zh) * 2016-08-18 2019-11-15 中国联合网络通信集团有限公司 Sdn网络故障的重路由方法及装置

Also Published As

Publication number Publication date
EP2277289A1 (en) 2011-01-26
US20120020207A1 (en) 2012-01-26
WO2009138133A1 (en) 2009-11-19
US9391874B2 (en) 2016-07-12

Similar Documents

Publication Publication Date Title
CN102090029A (zh) 在通信网络中重新路由业务
CN101095058A (zh) 在使用标签交换协议的环形拓扑网络中保护多播业务的有效保护机制
US8886831B2 (en) System and methodology for fast link failover based on remote upstream failures
CN1710887B (zh) 在分组网络中实现单个服务的故障保护和恢复的方法和设备
EP2417707B1 (en) In-band signaling for point-multipoint packet protection switching
EP1537706B1 (en) Fault tolerant network routing
CN100449521C (zh) 网络拓扑的恢复机制
CA2382656C (en) Packet network providing fast distribution of node related information and a method therefor
CN101145930B (zh) 保证组播业务可靠传输的方法、系统和设备
EP1776646B1 (en) A tandem node system and a method therefor
CN101317405B (zh) 标签交换路径保护方法及装置
CN103460647A (zh) 用于操作网络节点的技术
WO2007086157A1 (ja) ネットワークシステム
JP2002190825A (ja) トラフィックエンジニアリング方法及びそれを用いたノード装置
JP2010515314A (ja) 保護方式
CN102217238A (zh) 应用于mpls网络的服务实例
CN102549979A (zh) 用于传送业务的方法和设备
CN101436945B (zh) 一种组播业务故障保护的方法、系统及装置
CN1985472A (zh) 通过节点发送分组的方法
CN101483491B (zh) 共享保护环及其组播源路由保护方法和节点
JP2003060681A (ja) 伝送システム及び伝送装置
JP4611863B2 (ja) ループ検出方法およびループ検出装置
US9112791B2 (en) Methods and apparatus for protecting a communications network
CN103746891A (zh) 一种环网接入业务的保护方法、装置及系统
CN101022449B (zh) 一种建立旁路lsp的方法及系统及节点设备

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20110608

RJ01 Rejection of invention patent application after publication