公开(公告)号：US09100313B1

公开(公告)日：2015-08-04

申请号：US13709537

申请日：2012-12-10

Applicant: Cisco Technology, Inc.

Inventor： Mario Mazzola ,  Luca Cafiero ,  Francis Matus ,  Georges Akis ,  Peter Newman

IPC: H04L12/933 ,  H04L12/947 ,  H04L12/931

CPC classification number: H04L49/101 ,  H04L49/1523 ,  H04L49/25 ,  H04L49/50

Abstract: A multi-stage network switch comprises a plurality of ingress port subsystems each comprising one or more ingress ports configured to receive packets. The switch also comprises a plurality of unscheduled crossbar switching elements connected to the ingress port subsystems that are configured to receive one or more packets from at least one of the ingress port subsystems. The switch further comprises a plurality of egress port subsystems each comprising a memory and a plurality of egress ports. The memory comprises at least one shared egress buffer configured to receive any packets forwarded by the crossbar switching elements from the ingress port subsystems directed to the egress port subsystem, and the egress ports are configured to transmit the packets received in the shared egress buffer.

Abstract translation: 多级网络交换机包括多个入口端口子系统，每个入口端口子系统包括被配置为接收分组的一个或多个入口端口。 交换机还包括连接到入口端口子系统的多个非预定的交叉开关元件，其被配置为从至少一个入口端口子系统接收一个或多个分组。 交换机还包括多个出口端口子系统，每个出口端口子系统包括存储器和多个出口端口。 存储器包括至少一个共享出口缓冲器，其被配置为接收由交叉开关元件转发的指向入口端口子系统的入口端口子系统转发的任何分组，并且出口端口被配置为发送在共享出口缓冲器中接收的分组。