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    • 5. 发明授权
    • Packet switch with port route tables
    • 分组交换机带有端口路由表
    • US08040888B1
    • 2011-10-18
    • US11958313
    • 2007-12-17
    • Angus David Starr MacAdamBrian Scott Darnell
    • Angus David Starr MacAdamBrian Scott Darnell
    • H04L12/28
    • H04L12/6418
    • A packet switch includes individual route tables for ports of the packet switch. Each route table is associated with a port and individually maps a destination identifier of a data packet received at the port to another port in the packet switch. In some embodiments, the packet switch routes a data packet to an intermediate device based on a destination identifier in the data packet. The intermediate device services the data packet and sends the data packet, which includes the same destination identifier, back to the packet switch. In turn, the packet switch routes the data packet to a destination device based on the destination identifier in the data packet. The destination device terminates the data packet and may further service the data packet. In this way, the packet switch routes the data packet to both the intermediate device and the destination device based on the same destination identifier.
    • 分组交换机包括用于分组交换机端口的各个路由表。 每个路由表与端口相关联,并且将在端口处接收的数据分组的目的地标识符分别映射到分组交换机中的另一端口。 在一些实施例中,分组交换机基于数据分组中的目的地标识符将数据分组路由到中间设备。 中间设备对数据包进行服务,并将包含相同目的地标识符的数据包发送回数据包交换机。 反过来,分组交换机基于数据分组中的目的地标识符将数据分组路由到目的地设备。 目的设备终止数据分组,并可进一步为数据分组提供服务。 以这种方式,分组交换机基于相同的目的地标识符将数据分组路由到中间设备和目的设备两者。
    • 6. 发明授权
    • Packet latency based arbitration technique for a packet switch
    • 基于分组延迟的分组交换仲裁技术
    • US08014288B1
    • 2011-09-06
    • US12266377
    • 2008-11-06
    • Angus David Starr MacAdam
    • Angus David Starr MacAdam
    • H04L12/417H04L12/20H04L12/26
    • H04L49/253H04L47/10H04L49/15H04L49/65
    • A packet switch including input ports having various input bandwidths initializes credit values for the input ports. An arbiter of the packet switch selects input ports based on the credit values and routes data packets from the selected input ports to a switch fabric of the packet switch. The switch fabric routes data packets from the selected input ports to output ports of the packet switch. Moreover, the arbiter modifies the credit value of each selected input port based on the latency for routing the data packet from the selected input port to the switch fabric. In this way, the arbiter promotes fairness in routing additional data packets through the packet switch. In some embodiments, the switch fabric includes a buffered crossbar and the arbiter modifies credit values of crosspoints in the buffered crossbar based on the latency for routing data packets from the crosspoints to the output ports.
    • 包括具有各种输入带宽的输入端口的分组交换机初始化用于输入端口的信用值。 分组交换机的仲裁器基于信用值选择输入端口,并将数据分组从所选择的输入端口路由到分组交换机的交换结构。 交换结构将数据包从所选输入端口路由到数据包交换机的输出端口。 此外,仲裁器根据从所选择的输入端口将数据包路由到交换结构的等待时间来修改每个选择的输入端口的信用值。 以这种方式,仲裁器通过分组交换机促进路由附加数据分组的公平性。 在一些实施例中,交换结构包括缓冲交叉开关,并且仲裁器基于用于将数据分组从交叉点路由到输出端口的等待时间来修改缓冲交叉开关中的交叉点的信用值。