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1. 发明授权

US06584075B1 Efficient caching of routing information for unicast and multicast connections 失效
标题翻译：高效缓存单播和组播连接的路由信息
公开(公告)号：US06584075B1
公开(公告)日：2003-06-24
申请号：US08886130
申请日：1997-06-30
申请人： Amit Gupta , Raphael Rom , Tony Hsiao
发明人： Amit Gupta , Raphael Rom , Tony Hsiao
IPC分类号： H04L1228
CPC分类号： H04L45/22 , H04L12/185 , H04L12/1877 , H04L45/00 , H04L45/16 , H04L45/28 , H04L45/302 , H04L45/48
摘要： A routing engine for a node controller of a switch or for a router provides enhanced routing for unicast and multicast connections by representing preferred routing trees, associated with different bandwidths and quality of service indications, as tables having, for each entry, a node identification, a parent node identification, a link identifier and ah effective distance by which a node identified by the node identification is separated from the controller or router. The routing engine adapts quickly to changes in network configurations, such as link failure, by quickly patching a table affected by the failure in order to maintain service until a new preferred routing tree can be calculated. Recalculations of preferred routing trees are avoided by using said table to determine whether a new link or a restored link could possibly provide a more cost effective route than that specified in the existing table.
摘要翻译：用于交换机或路由器的节点控制器的路由引擎通过表示与不同带宽和服务质量指示相关联的优选路由树，为单播和多播连接提供增强路由，因为对于每个条目具有节点标识，父节点标识，链路标识符以及由节点标识识别的节点与控制器或路由器分离的有效距离。路由引擎通过快速修补受故障影响的表来快速适应网络配置的变化，例如链路故障，以维护服务，直到可以计算出新的优选路由树。通过使用所述表来确定新的链路或还原的链路是否可能提供比现有表中指定的更有成本效益的路由来避免优先路由树的重新计算。

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