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公开(公告)号：US08223669B2
公开(公告)日：2012-07-17
申请号：US12414331
申请日：2009-03-30
摘要： A network component comprising at least one processor configured to implement a method comprising receiving a packet, determining whether the packet comprises a topology label, and adding the topology label to the packet if the packet does not comprise the topology label. Included is a method comprising routing a plurality of packets corresponding to a plurality of forwarding equivalence classes (FECs) over a plurality of network topologies using a topology label and plurality of forwarding labels for each network topology. Also included is a network comprising a plurality of nodes in communication with each other and having a plurality of network topologies, wherein at least some of the nodes are configured to route data packets for a plurality of FECs along a path in each network topology using a topology label corresponding to each network topology and an inner label corresponding to each FEC.
摘要翻译： 一种网络组件，包括至少一个处理器，其被配置为实现包括接收分组的方法，确定所述分组是否包括拓扑标签，以及如果所述分组不包括所述拓扑标签，则将所述拓扑标签添加到所述分组。 包括的方法包括使用拓扑标签和针对每个网络拓扑的多个转发标签在多个网络拓扑上路由对应于多个转发等价类（FEC）的多个分组。 还包括包括彼此通信并且具有多个网络拓扑的多个节点的网络，其中至少一些节点被配置为沿着每个网络拓扑中的路径使用多个FEC路径的数据分组路由 对应于每个网络拓扑的拓扑标签和对应于每个FEC的内部标签。
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公开(公告)号：US20090252058A1
公开(公告)日：2009-10-08
申请号：US12414331
申请日：2009-03-30
IPC分类号： H04L12/28
摘要： A network component comprising at least one processor configured to implement a method comprising receiving a packet, determining whether the packet comprises a topology label, and adding the topology label to the packet if the packet does not comprise the topology label. Included is a method comprising routing a plurality of packets corresponding to a plurality of forwarding equivalence classes (FECs) over a plurality of network topologies using a topology label and plurality of forwarding labels for each network topology. Also included is a network comprising a plurality of nodes in communication with each other and having a plurality of network topologies, wherein at least some of the nodes are configured to route data packets for a plurality of FECs along a path in each network topology using a topology label corresponding to each network topology and an inner label corresponding to each FEC.
摘要翻译： 一种网络组件，包括至少一个处理器，其被配置为实现包括接收分组的方法，确定所述分组是否包括拓扑标签，以及如果所述分组不包括所述拓扑标签，则将所述拓扑标签添加到所述分组。 包括的方法包括使用拓扑标签和针对每个网络拓扑的多个转发标签在多个网络拓扑上路由对应于多个转发等价类（FEC）的多个分组。 还包括包括彼此通信并且具有多个网络拓扑的多个节点的网络，其中至少一些节点被配置为沿着每个网络拓扑中的路径使用多个FEC路径的数据分组路由 对应于每个网络拓扑的拓扑标签和对应于每个FEC的内部标签。
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公开(公告)号：US20120057593A1
公开(公告)日：2012-03-08
申请号：US13286923
申请日：2011-11-01
摘要： An apparatus comprising a path computation element (PCE) configured to communicate with a path computation client (PCC) and compute a point-to-multipoint (P2MP) path across an autonomous system (AS) domain. Also included is a network component comprising at least one processor configured to implement a method comprising obtaining a computation request for a P2MP path across a plurality of AS domains, attempting to calculate the P2MP path across the AS domains, thereby generating a computed path or a failure reason, and transmitting a reply comprising the computed path or an indication of the failure reason. Included is a method comprising exchanging a request message and a reply message about a P2MP path across an AS domain between a PCC and a PCE.
摘要翻译： 一种装置，包括被配置为与路径计算客户端（PCC）进行通信并且计算跨自治系统（AS）域的点对多点（P2MP）路径的路径计算元件（PCE）。 还包括一种网络组件，其包括至少一个处理器，该至少一个处理器被配置为实现一种方法，该方法包括获得跨多个AS域的P2MP路径的计算请求，试图计算跨越AS域的P2MP路径，从而生成计算出的路径或 故障原因，以及发送包含计算出的路径的回复或失败原因的指示。 包括一种方法，包括在PCC和PCE之间跨AS域交换请求消息和关于P2MP路径的回复消息。
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公开(公告)号：US20090303904A1
公开(公告)日：2009-12-10
申请号：US12476054
申请日：2009-06-01
IPC分类号： H04L12/28
CPC分类号： H04L45/50 , H04L45/02 , H04L47/70 , H04L47/724 , H04L47/785 , H04L47/825
摘要： A system and method for providing multi-topology support in RSVP-TE in a multi-protocol label switching network is provided. A method includes reserving path states for a traffic engineered label switched path (TE LSP), and releasing the reserved path states. The TE LSP is established within a single network topology in an environment of multiple network topologies, and the reserving path states includes sending a first resource reservation protocol with traffic engineering (RSVP-TE) message containing multi-topology information.
摘要翻译： 提供了一种在多协议标签交换网络中在RSVP-TE中提供多拓扑支持的系统和方法。 一种方法包括为流量工程标签交换路径（TE LSP）预留路径状态，以及释放保留路径状态。 TE LSP建立在多个网络拓扑环境中的单个网络拓扑中，保留路径状态包括发送包含多拓扑信息的流量工程（RSVP-TE）消息的第一资源预留协议。
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公开(公告)号：US20090245253A1
公开(公告)日：2009-10-01
申请号：US12404100
申请日：2009-03-13
IPC分类号： H04L12/56
摘要： An apparatus comprising a path computation element (PCE) configured to communicate with a path computation client (PCC) and compute a point-to-multipoint (P2MP) path across an autonomous system (AS) domain. Also included is a network component comprising at least one processor configured to implement a method comprising obtaining a computation request for a P2MP path across a plurality of AS domains, attempting to calculate the P2MP path across the AS domains, thereby generating a computed path or a failure reason, and transmitting a reply comprising the computed path or an indication of the failure reason. Included is a method comprising exchanging a request message and a reply message about a P2MP path across an AS domain between a PCC and a PCE.
摘要翻译： 一种装置，包括被配置为与路径计算客户端（PCC）进行通信并且计算跨自治系统（AS）域的点对多点（P2MP）路径的路径计算元件（PCE）。 还包括一种网络组件，其包括至少一个处理器，该至少一个处理器被配置为实现一种方法，该方法包括获得跨多个AS域的P2MP路径的计算请求，试图计算跨越AS域的P2MP路径，从而生成计算出的路径或 故障原因，以及发送包含计算出的路径的回复或失败原因的指示。 包括一种方法，包括在PCC和PCE之间跨AS域交换请求消息和关于P2MP路径的回复消息。
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公开(公告)号：US08817596B2
公开(公告)日：2014-08-26
申请号：US12683968
申请日：2010-01-07
申请人： Huaimo Chen , Qianglin Quintin Zhao
发明人： Huaimo Chen , Qianglin Quintin Zhao
摘要： An apparatus comprising a backup node coupled to an ingress node of a point-to-multipoint (P2MP) label switched path (LSP) and to a plurality of next-hop nodes of the ingress node of the P2MP LSP via a backup tree, wherein the backup node and the ingress node are both coupled to an external node, and wherein the backup node is configured to ensure data delivery in the P2MP LSP when the ingress node fails. Included is a network component comprising at least one processor configured to implement a method comprising detecting a failure in an ingress node of a P2MP LSP, receiving a data packet destined for the ingress node and to be transported by the P2MP LSP from a provider node when the ingress node fails, and transmitting the data packet on a backup tree that merges with the P2MP LSP prior to reaching an egress node.
摘要翻译： 一种装置，包括经由备份树耦合到点对多点（P2MP）标签交换路径（LSP）的入口节点和P2MP LSP的入节点的多个下一跳节点的备份节点，其中， 所述备份节点和所述入口节点都耦合到外部节点，并且其中所述备份节点被配置为当所述入口节点发生故障时，确保所述P2MP LSP中的数据传送。 包括的网络组件包括至少一个处理器，其被配置为实现一种方法，该方法包括：检测P2MP LSP的入口节点中的故障，接收目的地为入口节点的数据分组并且由P2MP LSP从提供商节点传送， 入口节点发生故障，并在到达出口节点之前将数据包发送到与P2MP LSP合并的备份树上。
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7.发明授权Systems and methods for implementing multi-topology support for label distribution protocol (LDP) of a multiprotocol label switching network 有权为多协议标签交换网络的标签分发协议（LDP）实现多拓扑支持的系统和方法公开(公告)号：US08654681B2
公开(公告)日：2014-02-18
申请号：US13545818
申请日：2012-07-10
CPC分类号： H04L45/026 , H04L45/02 , H04L45/507
摘要： System and method for support multiple topology in Label Distribution Protocol of Multi-Protocol Label Switching (MPLS) network are disclosed. The system includes a number of network elements and a communication mechanism used to connect the network elements. The network elements discover LDP peers within the network topology, and create and maintain LDP sessions for each of the network topologies. The network elements further establish LSPs by mapping network layer routing information within each network topology to data link layer switches paths. Furthermore, the communication mechanism enables the network elements to advertise the multi-topology capability and exchange the mapping information of label and FECs within each network topology.
摘要翻译： 披露了多协议标签交换（MPLS）网络标签分发协议支持多拓扑的系统和方法。 该系统包括多个网络元件和用于连接网络元件的通信机制。 网络元素发现网络拓扑中的LDP对等体，并为每个网络拓扑创建和维护LDP会话。 网元通过将每个网络拓扑中的网络层路由信息映射到数据链路层交换机路径进一步建立LSP。 此外，通信机制使网元能够通告多拓扑能力，并交换每个网络拓扑中的标签和FEC的映射信息。
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公开(公告)号：US20120250583A1
公开(公告)日：2012-10-04
申请号：US13523564
申请日：2012-06-14
IPC分类号： H04L12/28
摘要： A network component comprising at least one processor configured to implement a method comprising receiving a packet, determining whether the packet comprises a topology label, and adding the topology label to the packet if the packet does not comprise the topology label. Included is a method comprising routing a plurality of packets corresponding to a plurality of forwarding equivalence classes (FECs) over a plurality of network topologies using a topology label and plurality of forwarding labels for each network topology. Also included is a network comprising a plurality of nodes in communication with each other and having a plurality of network topologies, wherein at least some of the nodes are configured to route data packets for a plurality of FECs along a path in each network topology using a topology label corresponding to each network topology and an inner label corresponding to each FEC.
摘要翻译： 一种网络组件，包括至少一个处理器，其被配置为实现包括接收分组的方法，确定所述分组是否包括拓扑标签，以及如果所述分组不包括所述拓扑标签，则将所述拓扑标签添加到所述分组。 包括的方法包括使用拓扑标签和针对每个网络拓扑的多个转发标签在多个网络拓扑上路由对应于多个转发等价类（FEC）的多个分组。 还包括包括彼此通信并且具有多个网络拓扑的多个节点的网络，其中至少一些节点被配置为沿着每个网络拓扑中的路径使用多个FEC路径的数据分组路由 对应于每个网络拓扑的拓扑标签和对应于每个FEC的内部标签。
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9.发明申请System and Method for Point to Multipoint Inter-Domain Multiprotocol Label Switching Traffic Engineering Path Calculation 有权点对多点域间多协议标签交换流量工程路径计算的系统与方法公开(公告)号：US20100208733A1
公开(公告)日：2010-08-19
申请号：US12708048
申请日：2010-02-18
申请人： Qianglin Quintin Zhao , Huaimo Chen
发明人： Qianglin Quintin Zhao , Huaimo Chen
IPC分类号： H04L12/56
摘要： A system comprising a plurality of path computation elements (PCEs) configured to communicate with an ingress node, jointly compute a core tree for an inter-domain point-to-multipoint (P2MP) tree across a plurality of network domains, and independently compute a plurality of sub-trees in at least some of the network domains, wherein the core tree connects the ingress node to a boundary node (BN) in each one of the network domains that have a destination node and each sub-tree connects the BN to a plurality of destination nodes in one of the network domains that have a destination node.
摘要翻译： 一种系统，包括被配置为与入口节点进行通信的多个路径计算元件（PCE），跨多个网络域共同计算跨域点对多点（P2MP）树的核心树，并独立地计算 至少一些网络域中的多个子树，其中核心树将入口节点连接到具有目的地节点的每个网络域中的边界节点（BN），并且每个子树将BN连接到 具有目的地节点的网络域之一中的多个目的地节点。
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公开(公告)号：US08953597B2
公开(公告)日：2015-02-10
申请号：US13286923
申请日：2011-11-01
IPC分类号： H04L12/28 , H04L12/56 , H04L12/46 , H04L12/26 , H04L12/717 , H04L12/18 , H04L12/703 , H04L12/707
摘要： An apparatus comprising a path computation element (PCE) configured to communicate with a path computation client (PCC) and compute a point-to-multipoint (P2MP) path across an autonomous system (AS) domain. Also included is a network component comprising at least one processor configured to implement a method comprising obtaining a computation request for a P2MP path across a plurality of AS domains, attempting to calculate the P2MP path across the AS domains, thereby generating a computed path or a failure reason, and transmitting a reply comprising the computed path or an indication of the failure reason. Included is a method comprising exchanging a request message and a reply message about a P2MP path across an AS domain between a PCC and a PCE.
摘要翻译： 一种装置，包括被配置为与路径计算客户端（PCC）进行通信并且计算跨自治系统（AS）域的点对多点（P2MP）路径的路径计算元件（PCE）。 还包括一种网络组件，其包括至少一个处理器，该至少一个处理器被配置为实现一种方法，该方法包括获得跨多个AS域的P2MP路径的计算请求，试图计算跨越AS域的P2MP路径，从而生成计算出的路径或 故障原因，以及发送包含计算出的路径的回复或失败原因的指示。 包括一种方法，包括在PCC和PCE之间跨AS域交换请求消息和关于P2MP路径的回复消息。
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