Lightpath segmentation system and method in a generalized multi-protocol label switching network
    1.
    发明授权
    Lightpath segmentation system and method in a generalized multi-protocol label switching network 有权
    光路分割系统和方法在广义多协议标签交换网络中

    公开(公告)号:US07233743B2

    公开(公告)日:2007-06-19

    申请号:US10184180

    申请日:2002-06-27

    IPC分类号: H04J14/02 H04B10/00

    摘要: A lightpath segmentation system and method for use in a GMPLS network is described. In one embodiment, lightpaths are divided into segments according to the distribution of the wavelength-converter-equipped optical switches, or nodes, within a WDM network. As the number of hops within the segment increases, a lightpath segmentation probability increases. When a wavelength-converter-equipped node receives an LSP Request message, it calculates the LPSP and, if the LPSP exceeds a threshold, the node sets up a lightpath between itself and the ingress node or a previous upstream wavelength-converter-equipped node, if the lightpath has already been segmented.

    摘要翻译: 描述了在GMPLS网络中使用的光路分割系统和方法。 在一个实施例中,根据在WDM网络内配备有波长转换器的光交换机或节点的分布,光路被分成多个段。 随着段内的跳数增加,光路分割概率增加。 当配备有波长转换器的节点接收到LSP请求消息时,它计算LPSP,并且如果LPSP超过阈值,则节点在其与进入节点或之前上游的配备有上游波长转换器的节点之间建立光路, 如果光路已经被分割。

    System, method and apparatus for dynamic path protection in networks
    2.
    发明申请
    System, method and apparatus for dynamic path protection in networks 审中-公开
    网络动态路径保护的系统,方法和装置

    公开(公告)号:US20050237950A1

    公开(公告)日:2005-10-27

    申请号:US11114564

    申请日:2005-04-25

    摘要: The present invention provides a system, method and apparatus for dynamic path protection in networks by finding two paths between a source node and a destination node in a network having multiple nodes and multiple links. A first path is found between the source node and the destination node using a routing algorithm and a model of the network. Each link has a cost and at least one risk identifier. The cost of the links having one or more risk identifiers that occur more than once in the network model are increased. The model is modified by removing all links in the first path and all links having one or more risk identifiers in common with any of the risk identifiers of the links in the first path. The second path is found between the source node and the destination node using the routing algorithm and the modified model.

    摘要翻译: 本发明通过在具有多个节点和多个链路的网络中找到源节点和目的节点之间的两条路径来提供一种用于网络中动态路径保护的系统,方法和装置。 使用路由算法和网络模型,在源节点和目标节点之间找到第一条路径。 每个链路都具有成本和至少一个风险标识符。 具有在网络模型中出现多于一次的一个或多个风险标识符的链路的成本增加。 通过删除第一路径中的所有链接和具有与第一路径中的链接的任何风险标识符相同的一个或多个风险标识符的所有链接来修改该模型。 使用路由算法和修改的模型,在源节点和目的节点之间找到第二条路径。