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2. 发明授权

EP1078498B1 METHOD AND APPARATUS FOR SUPPLYING REQUESTS TO A SCHEDULER IN AN INPUT-BUFFERED MULTIPORT SWITCH 有权
标题翻译：方法和装置有关的问题到排放控制在与缓冲输入一个开关供应
公开(公告)号：EP1078498B1
公开(公告)日：2013-12-18
申请号：EP99920239.3
申请日：1999-04-29
申请人： Alcatel Lucent
发明人： BAUMAN, James, A. , ANDERSON, Eric, T.
IPC分类号： H04L12/70 , H04Q11/04
CPC分类号： H04L47/60 , H04L47/50 , H04L47/566 , H04L49/205 , H04L49/254 , H04L49/3018 , H04L49/352 , H04Q11/0478
摘要： A method and apparatus for supplying new requests to a scheduler in an input-buffered multiport switch involve selecting a request that does not target output channels that conflict with output channels targeted by requests that are already accessible to the scheduler. Specifically, target output channels of requests that are presently accessible to the scheduler are identified and compared to target output channels of requests that are included in a queue of next-in-line requests. The queue of next-in-line requests is reviewed and the highest priority request having no conflicting output channels is supplied to the scheduler. By supplying the scheduler with a new request that targets non-conflicting output channels, the scheduler is presented with a wider range of requested output channels from which to choose in each arbitration cycle. In a first embodiment, one, two, or eight ports are connected to each one of four input/output controllers in a switch having a four-channel switch fabric. To supply the scheduler with new requests, secondary arbitration is performed on a channel-specific basis in order to supply channel-specific requests to the scheduler. The method of supplying requests to the scheduler can be scaled to include multiple channels and multiple packet priority designations.
摘要翻译：一种输入缓冲多端口交换机上提供新的请求调度的方法和设备涉及选择的请求没有不达标的输出通道也由请求定为目标输出信道冲突也已经向调度访问。具体而言，请求的目标输出信道做目前访问的调度器被识别并与目标的请求输出通道没被包括在下一序位线的请求队列。下一序位线的请求的队列被审查，并具有没有冲突输出通道上的最高优先级请求被提供给调度器。通过提供调度与新的请求没有目标不冲突的输出通道，调度，提出了一系列抵制来自哪个请求输出通道在每个仲裁周期来选择的。在第一实施例中，一个，两个，或八个端口都连接到四个输入/输出控制器每一个在具有四通道交换结构的开关。提供与新请求调度器，次级仲裁是为了提供特定的信道的请求发送到调度器执行的特定信道的基础上。供给请求调度器的方法还可以扩展到包括多个信道和多个数据包优先级的指定。

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