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    PACKET FORWARDING
    22.
    发明公开
    PACKET FORWARDING 有权
    分组传输

    公开(公告)号：EP1842344A1

    公开(公告)日：2007-10-10

    申请号：EP06700629.6

    申请日：2006-01-18

    申请人： BRITISH TELECOMMUNICATIONS public limited company

    发明人： SONGHURST, David, John ,  JACQUET, Arnaud ,  HOVELL, Peter

    IPC分类号： H04L12/56

    CPC分类号： H04L47/10 ,  H04L47/20 ,  H04L47/2408 ,  H04L47/2441 ,  H04L47/245 ,  H04L47/30 ,  H04L47/31 ,  H04L47/35

    摘要： Packet forwarding apparatus comprising an input for receiving packets; a packet classifier arranged in operation to read a class indication in received packets and in dependence thereon to pass packets to a class-based policer associated with the class indicated; a plurality of class-based policers, each operable to assign a provisional indication to packets of said associated class in response to a measure of the load presented by packets of said class exceeding a predetermined class-based threshold; a multi-class policer operable to receive provisionally-indicated packets processed by said class-based policers, and to assign a congestion indication to packets having said provisional indication in response to congestion arising at said packet forwarding apparatus; and an output for presenting packets processed by said multi-class policer for onward transmission from said apparatus.

    MEASURING DATA SOURCE-SPECIFIC NETWORK METRICS
    28.
    发明公开
    MEASURING DATA SOURCE-SPECIFIC NETWORK METRICS 有权
    NETZWERKSPFADSMETRIKENMESSUNG

    公开(公告)号：EP2258079A1

    公开(公告)日：2010-12-08

    申请号：EP09724238.2

    申请日：2009-03-27

    申请人： BRITISH TELECOMMUNICATIONS public limited company

    发明人： JACQUET, Arnaud ,  MONCASTER, Toby

    IPC分类号： H04L12/26 ,  H04L12/56

    CPC分类号： H04L47/26 ,  H04L1/0026 ,  H04L1/0033 ,  H04L43/00 ,  H04L43/0829 ,  H04L43/0864 ,  H04L43/087 ,  H04L43/106 ,  H04L45/123 ,  H04L47/12

    摘要： Methods and systems for determining origin-specific network metrics in respect of a data network having at least one ingress node, the method comprising: receiving data items from outside the network; forwarding the data items with headers comprising fields for carrying origin information relating to the origin of the data item, and path metric information indicative of a characteristic being monitored; causing the data items to traverse the network; updating the fields carrying path metric information as the data items traverse the network; determining the origin information and path metric information after the data items have traversed the network and deriving in dependence thereon an origin-specific path metric relating to the characteristic in respect of the relevant portion of a path across the network; and combining origin-specific path metrics derived in respect of different data items if they relate to characteristics in respect of data items having a common origin. Also, methods and systems for determining target-specific network metrics in respect of a data network having at least one egress node.

    摘要翻译： 用于确定关于具有至少一个入口节点的数据网络的源特定网络度量的方法和系统，所述方法包括：从网络外部接收数据项; 使用包括用于携带与数据项的原点相关的原始信息的字段的标题转发数据项，以及指示被监视的特性的路径度量信息; 使数据项遍历网络; 随着数据项遍历网络，更新携带路径度量信息的字段; 在所述数据项目已经遍历所述网络之后确定所述原始信息和路径量度信息，并且依赖于相对于所述网络上的路径的相关部分的与所述特征有关的原点特定路径量度; 以及如果它们涉及具有共同起源的数据项的特征，则组合关于不同数据项导出的原点特定路径度量。