公开(公告)号：US06747971B1

公开(公告)日：2004-06-08

申请号：US09295429

申请日：1999-04-20

申请人： David A. Hughes ,  Daryn Lau ,  Dan Klausmeier ,  Eugene Wang ,  Madhav Marathe ,  Frank Chui ,  Gene K. Chui ,  Gary Kipnis ,  Gurmohan S. Samrao ,  Lionel A. King

发明人： David A. Hughes ,  Daryn Lau ,  Dan Klausmeier ,  Eugene Wang ,  Madhav Marathe ,  Frank Chui ,  Gene K. Chui ,  Gary Kipnis ,  Gurmohan S. Samrao ,  Lionel A. King

IPC分类号： H04L1256

CPC分类号： H04L12/5601 ,  H04L49/153 ,  H04L49/203 ,  H04L49/255 ,  H04L49/3081 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04Q11/0478

摘要： An apparatus is described comprising an ingress port and a plurality of switch planes where each of the switch planes has a dedicated scheduler and each of the switch planes are communicatively coupled to the ingress port. The switch planes may further have at least one input control port and at least one output control port where each of the input control ports are coupled to each of the output control ports in a crossbar arrangement. The communicative coupling may further comprise one of the input control ports coupled to the ingress port. Furthermore, the ingress port may have at least one unicast queue which is dedicated to a specific egress port. The ingress port may also have a multicast queue. The dedicated scheduler may further comprise a pointer to determine priority between multicast and unicast traffic, a pointer to determine priority between contending input control ports having multicast traffic and/or a pointer for each of the output control ports to determine priority between contending input control ports having unicast traffic. The apparatus may also further comprise a plurality of ingress ports where each of the ingress ports are communicatively coupled to one of each of the input control ports.

摘要翻译： 描述了一种装置，其包括入口端口和多个开关平面，其中每个开关平面具有专用调度器，并且每个开关平面通信地耦合到入口端口。 开关平面还可以具有至少一个输入控制端口和至少一个输出控制端口，其中每个输入控制端口以交叉布置方式耦合到每个输出控制端口。 交流耦合还可以包括耦合到入口端口的输入控制端口之一。 此外，入口端口可以具有专用于特定出口端口的至少一个单播队列。 入口端口也可以具有多播队列。 专用调度器还可以包括用于确定多播和单播业务之间的优先级的指针，用于确定具有多播业务的竞争输入控制端口和/或每个输出控制端口的指针之间的优先级的指针，以确定竞争输入控制端口 具有单播流量。 该设备还可以包括多个入口端口，其中每个入口端口通信地耦合到每个输入控制端口中的一个。