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1. 发明申请

US20060010249A1 Restricted dissemination of topology information in a communication network 审中-公开
标题翻译：在通信网络中限制拓扑信息的传播
公开(公告)号：US20060010249A1
公开(公告)日：2006-01-12
申请号：US10975067
申请日：2004-10-13
申请人： Subramaniam Sabesan , Martin Biddiscombe , Glenn Denney
发明人： Subramaniam Sabesan , Martin Biddiscombe , Glenn Denney
IPC分类号： G06F15/16
CPC分类号： H04L45/02 , H04W40/20 , H04W40/30
摘要： A communication network comprises a plurality of nodes interconnected by communication links. A node maintains a database of topology information relating to the network. A node receives a topology advertisement from another node of the network which provides information about a part of the network. The topology advertisement includes a metric which is related to aggregate distance or cost of the path travelled by the topology advertisement. The node compares the metric in the newly received topology advertisement with one previously received for the same part of the network. The database is updated with the newly received topology advertisement if the value of the metric in the newly received topology advertisement is lower than the metric in the topology advertisement previously received for the same part of the network. The method can be used during flooding or database synchronisation. The metric can be carried within a header or body of a topology advertisement, such as a Link State Advertisement (LSA).
摘要翻译：通信网络包括通过通信链路互连的多个节点。节点维护与网络有关的拓扑信息的数据库。节点从网络的另一节点接收拓扑广告，该节点提供关于网络的一部分的信息。拓扑广告包括与拓扑广告行进的路径的总距离或成本相关的度量。该节点将新接收的拓扑广告中的度量与先前为网络的同一部分接收到的度量进行比较。如果新接收到的拓扑广告中的度量的值低于先前为网络的同一部分接收的拓扑广告中的度量，则新数据库被更新为新接收的拓扑广告。该方法可以在洪泛或数据库同步期间使用。该度量可以在诸如链路状态通告（LSA）的拓扑广告的报头或主体内承载。

2. 发明授权

US07471669B1 Routing of protocol data units within a communication network 失效
标题翻译：在通信网络内路由协议数据单元
公开(公告)号：US07471669B1
公开(公告)日：2008-12-30
申请号：US10955496
申请日：2004-09-30
申请人： Subramaniam Sabesan , Martin Biddiscombe , Glenn Denney
发明人： Subramaniam Sabesan , Martin Biddiscombe , Glenn Denney
IPC分类号： H04L12/28
CPC分类号： H04L45/26 , H04L45/02 , H04L45/20 , H04L45/36
摘要： A protocol data unit is routed along a path between a first node and a second node within a communication network. The protocol data unit carries routing information which specifies the path in the form of a list of identifiers of the links to be followed towards the second node. At each intermediate node, the link identifier for the link just traversed with a link identifier for the corresponding link in the reverse direction towards the first node. At any point along the path the protocol data unit carries information which allows it to be carried towards the second node, or to follow a reverse path towards the first node. This reverse path can be used to report a fault to the first node.
摘要翻译：协议数据单元沿着通信网络内的第一节点和第二节点之间的路径路由。协议数据单元携带路由信息，其以第二节点要遵循的链路的标识符列表的形式指定路径。在每个中间节点处，链路的链路标识符刚刚通过与针对第一节点的相反方向的对应链路的链路标识符。沿着路径的任何点，协议数据单元携带允许其向第二节点传送的信息，或者遵循朝向第一节点的反向路径。该反向路径可用于向第一个节点报告故障。

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