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1. 发明申请

WO2011101758A1 OPTIMIZED FAST RE-ROUTE IN MPLS RING TOPOLOGIES 审中-公开
标题翻译： MPLS环形拓扑中优化的快速路由
公开(公告)号：WO2011101758A1
公开(公告)日：2011-08-25
申请号：PCT/IB2011/050351
申请日：2011-01-27
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , RAPOPORT, Marc , LIU, Autumn
发明人： KINI, Sriganesh , RAPOPORT, Marc , LIU, Autumn
IPC分类号： H04L12/56 , H04L12/437
CPC分类号： H04L45/00 , H04L12/437 , H04L41/0654 , H04L45/1283 , H04L45/22 , H04L45/28 , H04L45/50 , H04L47/122 , H04L47/127
摘要： A method performed on a network element employing Multi-protocol Label Switching (MPLS) to optimize bandwidth in a ring topology network including a back- up Label Switch Path (LSP) for a protected LSP by re-routing traffic onto the back-up LSP to avoid shared links between the protected LSP and back-up LSP, including receiving a first labeled packet from another label switch router (LSR) in the back-up LSP, the first labeled packet indicating that a protection switch of data is to be performed from the protected LSP to the back-up LSP, determining whether a shared link in the ring topology network exists between the protected LSP and the back-up LSP, rerouting traffic for the protected LSP onto an optimized back-up LSP to remove the shared link, receiving a second labeled packet indicating that a protection switch of data is to be performed, and restoring routing of the traffic onto the protected LSP in response to receiving the second labeled packet.
摘要翻译：一种在采用多协议标签交换（MPLS）的网元上执行的一种方法，用于通过将流量重新路由到备份LSP上来优化环路拓扑网络中的带宽，包括用于受保护LSP的备用标签交换路径（LSP）为了避免受保护的LSP和备份LSP之间的共享链路，包括从备用LSP中的另一个标签交换路由器（LSR）接收第一个标记的分组，第一个标记的分组指示要执行数据的保护切换从受保护的LSP到备用LSP，确定环路拓扑网络中的共享链路是否存在于受保护的LSP和备用LSP之间，将受保护的LSP的流量重新路由到优化的备份LSP上，以去除共享链路，接收指示要执行数据保护交换机的第二标记分组，以及响应于接收到第二标记分组，将业务路由恢复到受保护的LSP上。

2. 发明申请

WO2011101756A1 FAST LSP ALERT MECHANISM 审中-公开
标题翻译：快速LSP报警机制
公开(公告)号：WO2011101756A1
公开(公告)日：2011-08-25
申请号：PCT/IB2011/050305
申请日：2011-01-24
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , RAPOPORT, Marc
发明人： KINI, Sriganesh , RAPOPORT, Marc
IPC分类号： H04L12/24 , H04L12/56
CPC分类号： H04L41/06 , H04L45/28 , H04L45/304 , H04L45/50 , H04L47/10
摘要： A method performed on a network element employing Multiprotocol Label Switching (MPLS) to promulgate an alert to each Label Switch Router (LSR) (101) along a Label Switch Path (LSP) by forwarding a labeled packet serving as an alert packet generated by an LSR (101) in the LSP, the method including receiving the labeled packet by the network element (101) from another LSR in the LSP, determining whether the labeled packet is the alert packet by checking a time to live value in an MPLS label header of the labeled packet, determining whether the labeled packet is an operation, administration and maintenance (OAM) packet based on a presence of a generic associated channel label, copying the labeled packet including a label stack of the labeled packet and forwarding the labeled packet to a next LSR in the LSP, whereby the latency in promulgating the alert to each of the LSRs (101) in the LSP is reduced.
摘要翻译：一种在使用多协议标签交换（MPLS）的网元上执行的方法，通过转发用作由一个或多个标签交换路由器（101）产生的警报包的标记分组，向标签交换路径（LSP）向每个标签交换路由器（LSR）发布警报 LSR（101），该方法包括：通过网络单元（101）从LSP中的另一个LSR接收标记的分组，通过在MPLS标签头中检查生存时间值来确定标记分组是否是报警分组根据所述通用关联信道标签的存在来确定所述标记分组是否是操作，管理和维护（OAM）分组，复制所述标签分组，所述分组包括所述标签分组的标签栈，并将所述标签分组转发到 LSP中的下一个LSR，从而减少向LSP中的每个LSR（101）发布警报的延迟。

3. 发明申请

WO2013001405A1 E-TREE USING TWO PSEUDOWIRES BETWEEN EDGE ROUTERS WITH ENHANCED FORWARDING METHODS AND SYSTEMS 审中-公开
标题翻译： E-TREE在边缘路由器之间使用两个增强的前向方法和系统的PSEUDOW
公开(公告)号：WO2013001405A1
公开(公告)日：2013-01-03
申请号：PCT/IB2012/053067
申请日：2012-06-18
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , SINICROPE, David , CHEN, Michael , RAPOPORT, Marc
发明人： KINI, Sriganesh , SINICROPE, David , CHEN, Michael , RAPOPORT, Marc
IPC分类号： H04L12/56
CPC分类号： H04L45/66
摘要： An e-tree service that includes establishing two pseudowires (PW) between edge network elements with enhanced packet forwarding is described. In one embodiment, a root PW is used for carrying packets that are sent from a root node network element, and a leaf PW is used for carrying packets that are sent from a leaf node network element in the e-tree service network. When a network element receives a packet with a destination Media Access Control (MAC) address on the logical port associated with the leaf access circuit (AC), responsive to determining that the destination MAC address corresponds to a MAC address in a MAC address table stored in the network element, and that an attribute associated with that MAC address in the MAC address table indicates the MAC address was learned from the leaf PW, the network element drops the packet.
摘要翻译：描述了包括在具有增强的分组转发的边缘网元之间建立两个伪线（PW）的电子树服务。在一个实施例中，根PW用于承载从根节点网元发送的分组，并且叶PW用于承载从电子树业务网络中的叶节点网元发送的分组。当网络元件在与叶访问电路（AC）相关联的逻辑端口上接收到具有目的地媒体访问控制（MAC）地址的分组时，响应于确定目的地MAC地址对应于存储的MAC地址表中的MAC地址在网元中，与该MAC地址表中的MAC地址相关联的属性表示从叶PW学到的MAC地址，网元丢弃该包。

4. 发明申请

WO2012038871A1 RELAYED CSPF COMPUTATION FOR MULTIPLE AREAS AND MULTIPLE AUTONOMOUS SYSTEMS 审中-公开
标题翻译：多区域和多个自动系统的继电器CSPF计算
公开(公告)号：WO2012038871A1
公开(公告)日：2012-03-29
申请号：PCT/IB2011/054072
申请日：2011-09-16
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LU, Wenhu , KINI, Sriganesh , NARAYANAN, Srikanth
发明人： LU, Wenhu , KINI, Sriganesh , NARAYANAN, Srikanth
IPC分类号： H04L12/56
CPC分类号： H04L45/50 , H01L45/04 , H04L45/04 , H04L45/20 , H04L45/30 , H04L45/42
摘要： Computing a constraint-based label switched path (LSP) that spans multiple areas is described. In one embodiment, a router in a first one of the multiple areas computes a path segment that meets a set of one or more constraints to at least one border router of the first area that lies in a path necessary to reach the destination. The router transmits a path computation request message to a path computation element (PCE) in a second one of the areas, which includes a set of one or more attributes for each computed path segment that are used by the PCE to compute one or more path segments towards the destination of the constraint-based LSP. The router receives a path computation reply message from the PCE that specifies a set of one or more computed path segments that meet the set of constraints and that were computed by one or more PCEs downstream from the router. The router stitches at least one of the set of computed path segments that are specified in the path computation reply message with the path segment computed by the router to form at least part of the constraint-based LSP.
摘要翻译：描述跨越多个区域的基于约束的标签交换路径（LSP）的计算。在一个实施例中，多个区域中的第一个中的路由器计算满足一组一个或多个约束的路径段，该路径段位于位于到达目的地所需的路径中的第一区域的至少一个边界路由器。路由器将路径计算请求消息发送到第二区域中的路径计算元件（PCE），该第二区域包括由PCE用于计算一个或多个路径的每个计算的路径段的一个或多个属性集合到达基于约束的LSP的目的地的段。路由器从PCE接收路径计算应答消息，该消息指定满足该组约束并由路由器下游的一个或多个PCE计算的一组或多个计算的路径段的集合。路由器将路径计算应答消息中指定的一组计算路径段中的至少一个与路由器计算的路径段进行拼接，以形成至少部分基于约束的LSP。

5. 发明申请

WO2011132104A1 EFFICIENT ENCAPSULATION OF PACKETS TRANSMITTED ON A PACKET-PSEUDOWIRE OVER A PACKET SWITCHED NETWORK 审中-公开
标题翻译：通过分组交换网络在分发包上传输的分组的有效插入
公开(公告)号：WO2011132104A1
公开(公告)日：2011-10-27
申请号：PCT/IB2011/051512
申请日：2011-04-08
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , SINICROPE, David
发明人： KINI, Sriganesh , SINICROPE, David
IPC分类号： H04L12/46 , H04L29/06 , H04L12/56
CPC分类号： H04L12/4633 , H04L45/50 , H04L45/68 , H04L69/16 , H04L69/22 , H04L2212/00
摘要： Improving efficiency of encapsulation for packets of a first set of one or more protocols on a packet-pseudowire over a tunnel in a Packet Switched Network (PSN) is described. A first provider edge (PE) network element is coupled with a customer edge (CE) network element over an attachment circuit and is coupled with a second PE network element over the packet-pseudowire. The first provider edge network element receives a frame from the CE network element over the attachment circuit. Responsive to the first PE network element determining that the frame encapsulates a packet of the first set of protocols, the first PE network element encapsulates the packet into a protocol data unit for transmission over the packet-pseudowire without including substantially all of the plurality of fields of the data link layer header. The first PE network element transmits the protocol data unit over the packet-pseudowire over the PSN tunnel to the second PE network element. Efficiency is improved through a reduction of overhead on the packet-pseudowire by removing substantially all the fields of the data link layer header of the first frame.
摘要翻译：描述了在分组交换网络（PSN）中通过隧道在分组伪线上提高第一组一个或多个协议的分组的封装效率。第一提供商边缘（PE）网络元件通过附件电路与客户边缘（CE）网络元件耦合，并且通过分组伪线耦合到第二PE网络元件。第一提供商边缘网元通过附件电路从CE网元接收帧。响应于第一PE网络元件确定帧封装第一组协议的分组，第一PE网络元件将分组封装成协议数据单元，以在分组伪线上传输，而不包括基本上所有的多个字段的数据链路层头。第一PE网元通过PSN隧道上的分组伪线发送协议数据单元到第二PE网元。通过去除第一帧的数据链路层报头的基本上所有的字段，通过减少分组伪线上的开销来提高效率。

6. 发明申请

WO2010129948A1 AN ADDRESS RESOLUTION OPTIMIZATION PROCEDURE TO EFFECT A GRADUAL CUTOVER FROM A PROVIDER BRIDGE NETWORK TO A VPLS OR PROVIDER BACKBONE BRIDGING NETWORK 审中-公开
标题翻译：一个地址分辨率优化程序，用于将一个梯级切换器从一个提供者的桥接网络转移到一个VPLS或者提供者的背桥网络
公开(公告)号：WO2010129948A1
公开(公告)日：2010-11-11
申请号：PCT/US2010/034222
申请日：2010-05-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , TAKACS, Attila
发明人： KINI, Sriganesh , TAKACS, Attila
IPC分类号： H04L12/46 , H04L12/56
CPC分类号： H04L45/00 , H04L12/4625 , H04L29/12028 , H04L45/02 , H04L45/025 , H04L45/52 , H04L45/66 , H04L61/103
摘要： A method and apparatus that operates two bridging protocols in a hybrid bridging node (204D) is described. The operation of the two bridging protocols in the hybrid node allows for an incremental transition of a provider bridging network from operating a legacy bridging protocol that shares MAC addresses to a bridging network that operates VPLS and or PBB bridging protocols. The hybrid bridging node selectively broadcasts address resolution packets and unicast packets with unknown MAC addresses from the nodes operating VPLS and or PBB to nodes operating a legacy bridging protocol.
摘要翻译：描述了在混合桥接节点（204D）中操作两个桥接协议的方法和装置。混合节点中的两个桥接协议的操作允许提供商桥接网络从运行共享MAC地址的传统桥接协议到运行VPLS和/或PBB桥接协议的桥接网络的增量转换。混合桥接节点选择性地将地址解析分组和未知MAC地址的单播分组从运行VPLS和PBB的节点广播到运行传统桥接协议的节点。

7. 发明申请

WO2011125013A1 INTER-WORKING OF EFM-OAM AND CFM-OAM FOR MOBILE BACKHAUL NETWORKS 审中-公开
标题翻译：用于移动回传网络的EFM-OAM和CFM-OAM的互操作
公开(公告)号：WO2011125013A1
公开(公告)日：2011-10-13
申请号：PCT/IB2011/051422
申请日：2011-04-02
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , MEHTA, Rishi
发明人： KINI, Sriganesh , MEHTA, Rishi
IPC分类号： H04W24/00 , H04W92/04
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 EMF message from a second network element that supports EMF, wherein the second network element is in the RAN and wherein the EMF message includes OAM data; converting the OAM data from the EMF 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EMF的第二网元接收EMF消息来访问网络，其中所述第二网元在所述RAN中，并且其中所述EMF消息包括OAM数据; 将来自EMF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中的端到端OAM子层 OAM数据从EFM到CFM。

8. 发明申请

WO2011045733A1 RSVP-TE GRACEFUL RESTART UNDER FAST RE-ROUTE CONDITIONS 审中-公开
标题翻译： RSVP-TE在快速重新路由条件下的严格重启
公开(公告)号：WO2011045733A1
公开(公告)日：2011-04-21
申请号：PCT/IB2010/054594
申请日：2010-10-11
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , LIU, Hua Autumn , KINI, Sriganesh , VENKATESAN, Pradeep
发明人： LIU, Hua Autumn , KINI, Sriganesh , VENKATESAN, Pradeep
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/026 , H04L45/22 , H04L45/28 , H04L45/50 , H04L47/70 , H04L47/724 , H04L47/746 , H04L47/825
摘要： According to one embodiment, in response to at least one of a link failure and node failure of a protected label switched path (LSP), network traffic is switched onto a protection path according to a fast re-reroute (FRR) scheme. A HELLO session is established with the remote node that is not immediately adjacent to the network element., including exchanging one or more HELLO messages with the remote node, each HELLO message having a time-tolive (TTL) value of greater than one if ΪP forwarding is used. The TTL value of the HELLO message is set to one if the HELLO message is sent via tunnel. In response to a request to restart, a resource reservation protocol (RSVP) traffic engineering (TE) graceful restart (GR) procedure is performed using information obtained from the one or more HELLO messages exchanged with the remote node during the HELLO session.
摘要翻译：根据一个实施例，响应于受保护标签交换路径（LSP）的链路故障和节点故障中的至少一个，根据快速重新路由（FRR）方案将网络业务切换到保护路径。与不紧邻网络元件的远程节点建立HELLO会话，包括与远程节点交换一个或多个HELLO消息，每个HELLO消息具有大于1的时间（TTL）值，如果？使用P转发。如果通过隧道发送HELLO消息，则HELLO消息的TTL值被设置为1。响应于重新启动的请求，使用在HELLO会话期间与远程节点交换的一个或多个HELLO消息获得的信息执行资源预留协议（RSVP）流量工程（TE）平滑重启（GR）过程）。

9. 发明申请

WO2013011420A1 SIGNALING A LABEL SWITCHED PATH (LSP) TUNNELING MODEL 审中-公开
标题翻译：信号交换路径（LSP）隧道模型
公开(公告)号：WO2013011420A1
公开(公告)日：2013-01-24
申请号：PCT/IB2012/053532
申请日：2012-07-10
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , D'SOUZA, Pramodh
发明人： KINI, Sriganesh , D'SOUZA, Pramodh
IPC分类号： H04L12/56 , G01V1/40
CPC分类号： H04L12/66 , H04L45/50
摘要： Signaling a Label Switched Path (LSP) tunneling model is described. In one embodiment, a network element that is acting as an egress network element in a Multiprotocol Label Switching (MPLS) network signals multiple LSPs for multiple disparate applications provided in the MPLS network that each require a different type of tunneling model. The network element transmits a first label mapping message for one of the LSPs that includes an indication of a first tunneling model type applicable for that LSP. That LSP is to be used to transport traffic in the MPLS network for a first one of the disparate applications that requires the indicated first tunneling model type. The network element further transits a second label mapping message for a second one of the LSPs that includes an indication of a second tunneling model type applicable for that LSP. That LSP is to be used to transport traffic in the MPLS network for a second one of the disparate applications that requires the indicated second tunneling model type. The first tunneling model type and the second tunneling model type are different. In one embodiment, the first tunneling model type is a uniform tunneling model and the second tunneling model type is a pipe tunneling model (regular pipe or short-pipe).
摘要翻译：描述了标签交换路径（LSP）隧道模型的信令。在一个实施例中，作为多协议标签交换（MPLS）网络中的出口网络元件的网络元件向MPLS网络中提供的多个不同应用的多个LSP发送信号，每个LSP需要不同类型的隧道模型。网元发送包含可应用于该LSP的第一隧道模型类型的指示的LSP之一的第一标签映射消息。该LSP将用于在需要所指示的第一隧道模型类型的不同应用程序中的第一个应用中传输MPLS网络中的流量。所述网元进一步转换所述LSP中的第二标签映射消息，所述第二标签映射消息包括可应用于所述LSP的第二隧道模型类型的指示。该LSP将用于在需要所指示的第二隧道模型类型的不同应用程序中的第二个应用中传输MPLS网络中的流量。第一种隧道模型类型和第二种隧道模型类型不同。在一个实施例中，第一隧道模型类型是均匀隧道模型，第二隧道模型类型是管道隧道模型（普通管道或短管道）。

10. 发明申请

WO2012117317A1 MPLS FAST RE-ROUTE USING LDP (LDP-FRR) 审中-公开
标题翻译：使用LDP（LDP-FRR）的MPLS快速路由
公开(公告)号：WO2012117317A1
公开(公告)日：2012-09-07
申请号：PCT/IB2012/050818
申请日：2012-02-22
申请人： TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) , KINI, Sriganesh , NARAYANAN, Srikanth
发明人： KINI, Sriganesh , NARAYANAN, Srikanth
IPC分类号： H04L12/56
CPC分类号： H04L45/507 , H04L45/22 , H04L45/28
摘要： MPLS (Multiprotocol Label Switching) fast re-routing using LDP (Label Distribution Protocol) is described. A first network element in a MPLS network receives a first label advertised from a second network element in the MPLS network. The first network element computes a shortest path tree (SPT) to reach a destination network element under a potential failure condition. The second network element is a nexthop of the first network element in the computed SPT and is not upstream from the potential failure condition. The first network element advertises a second label to one or more third network elements for a backup LDP LSP (Label Switched Path) that will serve as a backup when the potential failure condition is realized. The third network element(s) are upstream neighbors on the computed SPT with respect to the first network element. The first network element installs a swap action from the second label to the first label.
摘要翻译：描述了使用LDP（标签分发协议）的MPLS（多协议标签交换）快速重路由。 MPLS网络中的第一网元接收从MPLS网络中的第二网元发布的第一标签。第一个网络元素计算一个最短路径树（SPT），以在潜在的故障条件下到达目标网元。第二个网元是计算出的SPT中第一个网元的下一跳，不在潜在故障条件的上游。第一个网络单元向一个或多个第三个网元发布第二个标签，用于备份LDP LSP（标签交换路径），当实现潜在的故障条件时，备用LDP LSP（标签交换路径）将用作备份。第三网络元件是相对于第一网络元件在计算的SPT上的上游邻居。第一个网络元件将第二个标签的交换操作安装到第一个标签。

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