LINK STATE ROUTING PROTOCOLS FOR DATABASE SYNCHRONIZATION IN GMPLS NETWORKS
    21.
    发明申请
    LINK STATE ROUTING PROTOCOLS FOR DATABASE SYNCHRONIZATION IN GMPLS NETWORKS 审中-公开
    用于GMPLS网络中数据库同步的链路状态路由协议

    公开(公告)号:US20110022728A1

    公开(公告)日:2011-01-27

    申请号:US12507233

    申请日:2009-07-22

    IPC分类号: G06F15/16 G06F17/30

    摘要: The present invention relates to a method and apparatus for synchronizing local databases maintained control plane (CP) nodes in a GMPLS network. CP nodes that are not involved in path computation do not need to store the TE information contained in opaque link state advertisements (LSAs). These CP nodes only store that part of an opaque LS which is used during the flooding procedure to verify if the LS is new or updated. This verification is based on a few fields of the LSA that contain link state (LS) identifying information. A CP node that is not involved in path computation stores only the LS identifying information and discards the remainder after the LSA is relayed to it neighbor CP nodes.

    摘要翻译: 本发明涉及用于在GMPLS网络中同步本地数据库维护的控制平面(CP)节点的方法和装置。 不涉及路径计算的CP节点不需要存储包含在不透明链路状态通告(LSA)中的TE信息。 这些CP节点仅存储在泛洪过程期间使用的不透明LS的部分,以验证LS是新的还是更新的。 此验证基于包含链路状态(LS)标识信息的LSA的几个字段。 不涉及路径计算的CP节点仅存储LS标识信息,并且在将LSA中继到其邻居CP节点之后丢弃余数。

    Method and apparatus for influencing the selection of peer data sources in a P2P network
    23.
    发明授权
    Method and apparatus for influencing the selection of peer data sources in a P2P network 有权
    影响P2P网络中对等数据源选择的方法和装置

    公开(公告)号:US09130960B2

    公开(公告)日:2015-09-08

    申请号:US13132582

    申请日:2008-12-02

    IPC分类号: H04L1/00 H04L12/28 H04L29/08

    摘要: Disclosed is a method of selecting a data source node from a plurality of data source nodes, the selected data source node being used to send data to a data requesting node over a packet data network. The method includes, at an intermediate node of the network, intercepting at least one message sent to or from the data requesting node, the message(s) relating to data source node suitability, determining a cost of communication between the data requesting node and each of the data source nodes to which the message(s) relate, and influencing data source node suitability information sent to the data requesting node to take account of the cost to enable the data requesting node to use the information to select a data source node.

    摘要翻译: 公开了一种从多个数据源节点中选择数据源节点的方法,所选择的数据源节点用于通过分组数据网络向数据请求节点发送数据。 该方法包括在网络的中间节点拦截发送到数据请求节点或从数据请求节点发送的至少一个消息,与数据源节点适用性相关的消息,确定数据请求节点和每个数据请求节点之间的通信成本 和影响发送到数据请求节点的数据源节点适用性信息以考虑成本以使数据请求节点使用该信息来选择数据源节点的数据源节点。

    Enhancements to PIM fast re-route with upstream activation packets
    24.
    发明授权
    Enhancements to PIM fast re-route with upstream activation packets 有权
    PIM的增强功能快速重新路由与上行激活数据包

    公开(公告)号:US08913482B2

    公开(公告)日:2014-12-16

    申请号:US13486651

    申请日:2012-06-01

    摘要: An upstream activation mechanism provides enhancements to PIM-SM based fast re-route in a multicast communication network, where secondary paths provides redundancy to a multicast tree and are on standby to reduce bandwidth usage when there is no failure in the network. Upon receiving an indication of a loss of connection to the primary path of the multicast tree network, a network node that has a failure-free secondary path to a common source node of the multicast tree sends an activation packet upstream toward the common source node via the failure-free secondary path. The activation packet causes one or more upstream nodes to unblock their respective outgoing interfaces to thereby activate transmission of the multicast data traffic on the failure-free secondary path.

    摘要翻译: 上游激活机制提供了对组播通信网络中基于PIM-SM的快速重路由的增强功能,其中辅助路径为组播树提供冗余,并且在不存在网络故障时待机以减少带宽使用。 在接收到与多播树网络的主路径的连接丢失的指示时,具有到多播树的公共源节点的无故障次要路径的网络节点经由 无故障次要路径。 激活分组使得一个或多个上游节点解除其各自的输出接口的阻塞,从而激活无故障次要路径上的多播数据业务的传输。

    Incremental deployment of MRT based IPFRR
    25.
    发明授权
    Incremental deployment of MRT based IPFRR 有权
    基于MRF的IPFRR的增量部署

    公开(公告)号:US08842522B2

    公开(公告)日:2014-09-23

    申请号:US13453876

    申请日:2012-04-23

    CPC分类号: H04L45/128 H04L45/48

    摘要: A method supports incremental deployment of maximally redundant trees-fast reroute (MRT-FRR) by supporting MRT-FRR within an island of nodes in the network. A destination node and next hop failure selected to calculate detour paths. The clean set of nodes is calculated. The clean set of nodes is expanded with extended island candidate nodes that are reachable by a border node within the island via shortest path first (SPF) to the destination node that does not pass through the failed next hop. The extended island candidate nodes that are reachable by the border node within the island via SPF are part of an extended island. An MRT is calculated for each extended island candidate node. A candidate node is selected from the clean set of nodes according to a configured optimization option to serve as the endpoint of detour path to a destination node.

    摘要翻译: 一种方法通过在网络中的一个节点岛内支持MRT-FRR来支持最大限度地冗余的树快速重路由(MRT-FRR)的增量部署。 选择目的地节点和下一跳失败来计算迂回路径。 计算干净的节点集。 通过最短路径优先(SPF)到岛内的边界节点可达到的扩展岛候选节点扩展到不通过故障下一跳的目的地节点的干净的节点集。 通过SPF可以通过岛内边界节点到达的扩展岛候选节点是扩展岛的一部分。 为每个扩展岛候选节点计算MRT。 根据配置的优化选项从干净的节点集中选择候选节点,以用作到目的地节点的迂回路径的端点。

    System and method of implementing lightweight not-via IP fast reroutes in a telecommunications network
    26.
    发明授权
    System and method of implementing lightweight not-via IP fast reroutes in a telecommunications network 有权
    在电信网络中实现轻量级不通过IP快速重新路由的系统和方法

    公开(公告)号:US08780696B2

    公开(公告)日:2014-07-15

    申请号:US13129694

    申请日:2009-11-16

    IPC分类号: H04L12/26

    摘要: A system, method, and node for implementing lightweight Not-via Internet Protocol fast reroutes of a packet in a telecommunications network between a first node and a destination node. The method determines a shortest path between the first node and the destination node and two redundant trees between the first node and the destination node. Each redundant tree provides an alternate path from the first node and the destination node. When a failure in a link between the first node and the destination node is detected, the packet is forwarded to the destination node via a first redundant tree, and if not available, via a second redundant tree. If the second redundant tree is not available, the packet is dropped. If no failure in the link between the first node and the destination node is detected, the packet is sent via the determined shortest path to the destination node.

    摘要翻译: 一种用于在第一节点和目的地节点之间的电信网络中实现轻量级非通过因特网协议快速重新路由分组的系统,方法和节点。 该方法确定第一节点和目的节点之间的最短路径以及第一节点与目的节点之间的两个冗余树。 每个冗余树提供从第一个节点和目标节点的替代路径。 当检测到第一节点和目的地节点之间的链路故障时,分组经由第一冗余树被转发到目的地节点,并且如果不可用,经由第二冗余树被转发。 如果第二个冗余树不可用,则丢弃该数据包。 如果检测到第一节点和目的地节点之间的链路没有故障,则经由确定的最短路径将分组发送到目的地节点。

    Method and apparatus for avoiding unwanted data packets
    27.
    发明授权
    Method and apparatus for avoiding unwanted data packets 有权
    用于避免不需要的数据分组的方法和装置

    公开(公告)号:US08576845B2

    公开(公告)日:2013-11-05

    申请号:US13059515

    申请日:2008-08-22

    IPC分类号: H04L12/26

    摘要: Method and apparatus for controlling transmission of data packets in a packet-switched network. When a first end-host (A) sends an address query to a DNS system (300) for a second end-host, the DNS system responds by providing a sender key created from a destination key registered for the second end-host, if the first end-host is authorized to send packets to the second end-host. Thereby, the first end-host, if authorized, is able to get across data packets to the second end-host by attaching a sender tag (TAG) generated from the sender key, as ingress tag to each transmitted data packet. A router (302) in the network matches an ingress tag in a received packet with entries in a forwarding table and sends out the packet on an output port (X) according to a matching entry. Otherwise, the router discards the packet if no matching entry is found in the table.

    摘要翻译: 用于控制分组交换网络中数据分组传输的方法和装置。 当第一终端主机(A)向第二终端主机的DNS系统(300)发送地址查询时,DNS系统通过提供从为第二终端主机注册的目的地密钥创建的发送者密钥进行响应,如果 第一个终端主机被授权将数据包发送到第二个终端主机。 因此,如果授权,第一终端主机能够通过将从发送方密钥生成的发送者标签(TAG)作为入口标签附加到每个发送的数据分组,来跨越数据分组到达第二终端主机。 网络中的路由器(302)将接收到的分组中的入口标签与转发表中的条目匹配,并根据匹配条目在输出端口(X)上发送分组。 否则,如果表中没有匹配的条目,路由器将丢弃该数据包。

    Technique of Processing Network Traffic That Has Been Sent on a Tunnel
    28.
    发明申请
    Technique of Processing Network Traffic That Has Been Sent on a Tunnel 有权
    在隧道上发送的网络流量处理技术

    公开(公告)号:US20130258963A1

    公开(公告)日:2013-10-03

    申请号:US13817186

    申请日:2010-08-17

    IPC分类号: H04W28/06

    摘要: A technique of processing network traffic that is sent on a tunnel between a first tunnel and a second tunnel node in a communication network is provided. A device implementation of this technique comprises an enhanced network address translation, eNAT, component (10) comprising a first obtaining unit (14) configured to obtain an uplink data packet (26) from an uplink tunnel from the first tunnel node to the second tunnel node, the uplink data packet comprising a first network address associated with the first tunnel node, a second network address associated with the second tunnel node, a first identifier associated with the uplink tunnel an internal network address, and an internal port number, a second obtaining unit (16) configured to obtain a second identifier associated with a downlink tunnel from the second tunnel node to the first tunnel node, wherein the downlink tunnel is related to the uplink tunnel, a checking unit (18) configured to check, based on the second network address and the first identifier, whether a database entry comprising the second network address and the first identifier exists in a database (12), an up-dating unit (20) configured to update the database (12) in case the checked database entry does not exist in the database (12), and a manipulating unit (22) configured to manipulate the uplink data packet (26).

    摘要翻译: 提供了一种处理在通信网络中的第一隧道和第二隧道节点之间的隧道上发送的网络流量的技术。 该技术的设备实现包括增强的网络地址转换,eNAT,组件(10),包括第一获取单元(14),第一获取单元(14)被配置为从第一隧道节点到第二隧道的上行链路隧道获取上行链路数据分组(26) 节点,所述上行链路数据分组包括与所述第一隧道节点相关联的第一网络地址,与所述第二隧道节点相关联的第二网络地址,与所述上行链路隧道相关联的第一标识符,内部网络地址,以及内部端口号,第二 获取单元(16),被配置为获得与从所述第二隧道节点到所述第一隧道节点的下行链路隧道相关联的第二标识符,其中所述下行链路隧道与所述上行链路隧道相关;检查单元(18),被配置为基于 第二网络地址和第一标识符,数据库(12)中是否存在包括第二网络地址的数据库条目和第一标识符, 单元(20),被配置为在数据库(12)中不存在所检查的数据库条目的情况下更新数据库(12);以及操纵单元(22),其被配置为操纵上行链路数据分组(26)。

    Congestion handling in multicast networks
    29.
    发明授权
    Congestion handling in multicast networks 有权
    组播网络中的拥塞处理

    公开(公告)号:US08503303B2

    公开(公告)日:2013-08-06

    申请号:US12989705

    申请日:2008-04-25

    IPC分类号: H04L12/26 H04L12/56

    摘要: The invention relates to techniques for traffic handling in congestion situations in a point-to-multipoint (‘PTM’) enabled network. A method embodiment of the inventive technique is performed in an egress node of the network and comprises the steps of detecting marked packets, the marking being indicative of a congestion situation in a core node of the PTM-enabled network; selecting, based on the detected markings, a particular PTM flow from one or more PTM flows passing the egress node for termination; and indicating the selected PTM flow in an upstream direction of the selected flow.

    摘要翻译: 本发明涉及在点对多点(“PTM”)使能网络中的拥塞情况下的业务处理技术。 在网络的出口节点中执行本发明技术的方法实施例,并且包括以下步骤:检测标记分组,该标记指示PTM使能网络的核心节点中的拥塞情况; 基于检测到的标记,从经过出口节点的一个或多个PTM流中选择特定的PTM流来终止; 并指示所选择的流的上游方向上的所选PTM流。

    TECHNIQUE FOR ADDRESS RESOLUTION IN A DATA TRANSMISSION NETWORK
    30.
    发明申请
    TECHNIQUE FOR ADDRESS RESOLUTION IN A DATA TRANSMISSION NETWORK 审中-公开
    数据传输网络中地址解析的技术

    公开(公告)号:US20100272107A1

    公开(公告)日:2010-10-28

    申请号:US12744876

    申请日:2007-11-26

    IPC分类号: H04L12/56

    摘要: A technique for address resolution in data transmission networks, for example ARP-based address resolution in IPv4 networks. An embodiment of the technique comprises the following steps performed in a host of the data transmission network: Maintaining an association of at least one physical address with at least one network address range comprising multiple network addresses; obtaining a target network address; comparing the target network address with the network address range to determine an associated target physical address; and providing the determined target physical address, e.g. for initiating a data transmission.

    摘要翻译: 数据传输网络中的地址解析技术,例如IPv4网络中基于ARP的地址解析技术。 该技术的实施例包括在数据传输网络的主机中执行的以下步骤:维护至少一个物理地址与至少一个包括多个网络地址的网络地址范围的关联; 获取目标网络地址; 将目标网络地址与网络地址范围进行比较以确定相关联的目标物理地址; 并提供确定的目标物理地址,例如。 用于启动数据传输。