Method and apparatus for managing the flow of data within a switching device
    10.
    再颁专利
    Method and apparatus for managing the flow of data within a switching device 有权
    用于管理交换设备内的数据流的方法和装置

    公开(公告)号:USRE40467E1

    公开(公告)日:2008-08-26

    申请号:US11347786

    申请日:2006-02-03

    IPC分类号: H04L12/00

    摘要: A method and apparatus for managing the flow of data within a switching device is provided. The switching device includes network interface cards connected to a common backplane. Each interface card is configured to support the maximum transfer rate of the backplane by maintaining a “pending” queue to track data that has been received but for which the appropriate routing destination has not yet been determined. The switching device includes a switch controller that maintains a central card/port-to-address table. When an interface card receives data with a destination address that is not known to the interface card, the interface card performs a direct memory access over a bus that is separate from the backplane to read routing data directly from the central table in the switch controller. Each interface card builds and maintains a routing information table in its own local memory that only includes a routing information for the destination addresses that the interface card is most likely to receive.

    摘要翻译: 提供一种用于管理切换装置内的数据流的方法和装置。 交换设备包括连接到公共背板的网络接口卡。 每个接口卡被配置为通过维持“挂起”队列来支持背板的最大传输速率来跟踪已经接收到但是尚未确定适当的路由目的地的数据。 开关装置包括维持中央卡/端口到地址表的开关控制器。 当接口卡接收到具有接口卡不知道的目的地地址的数据时,接口卡通过与背板分离的总线执行直接存储器访问,以直接从交换机控制器中的中央表读取路由数据。 每个接口卡在其本地存储器中构建并维护路由信息表,其中仅包括接口卡最可能接收的目的地地址的路由信息​​。