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1. 发明授权

US06741552B1 Fault-tolerant, highly-scalable cell switching architecture 失效
标题翻译：容错，高度可扩展的小区交换架构
公开(公告)号：US06741552B1
公开(公告)日：2004-05-25
申请号：US09022679
申请日：1998-02-12
申请人： Carl McCrosky , Jeff S. Roe , Ian G. Barrett , Ken Sailor
发明人： Carl McCrosky , Jeff S. Roe , Ian G. Barrett , Ken Sailor
IPC分类号： G01R3108
CPC分类号： H04L12/5601 , H04L49/106 , H04L49/1576 , H04L49/203 , H04L49/256 , H04L2012/5609 , H04L2012/5637 , H04L2012/5648 , H04L2012/5651 , H04L2012/5652 , H04L2012/5681
摘要： Generally speaking, the cell switching architecture of the present invention offers a powerful, simple, and in many ways elegant solution to the problem of providing cost-effective, high-bandwidth, fault-tolerant cell switching. The architecture is based on a network of switching elements connected in a hypercube topology to form a switch fabric. The generalized hypercube is D dimensional, where D≧3 when all radices in the radix set are 2 and D≧2 when at least one of the radices is greater than 2. A fully-populated switch is fully symmetric: each switching element has the same number and kind of connections to both its neighbors and to the outside world as every other switching element. In an exemplary embodiment, each switching element is connected to one data source and one data sink, e.g., a Utopia bus or other broadband connection. In the same exemplary embodiment, links between switching elements are bidirectional and synchronous, operating in accordance with a Cell Exchange Cycle (CEC). Buffer space for a limited number N of cells is provided within each switching element. Multipath routing allows a switching element to forward a cell along any of multiple paths. Retrograde and lateral motion, i.e., motion other than in a forward direction toward the cell's destination, is also allowed to relieve temporary local congestion.
摘要翻译：一般来说，本发明的小区交换结构为提供具有成本效益，高带宽，容错小区切换的问题提供了强大，简单且多方面的优雅解决方案。该架构基于连接在超立方体拓扑中的交换元件的网络，以形成交换结构。广义超立方体是D维，其中当基数中的至少一个大于2时，基数组中的所有基数为2且D> = 2时D> = 3。完全填充的开关是完全对称的：每个开关元件与其邻居和外部世界具有相同的数量和种类的连接作为每个其他交换元件。在示例性实施例中，每个开关元件连接到一个数据源和一个数据宿，例如乌托邦总线或其他宽带连接。在相同的示例性实施例中，开关元件之间的链路是双向的和同步的，根据电池交换周期（CEC）操作。在每个开关元件内提供有限数量N个单元的缓冲器空间。多路径路由允许交换元件沿多个路径中的任意一个路由转发单元。逆向和横向运动，即除向前朝向小区目的地的运动之外的运动也被允许缓解临时的局部拥挤。

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