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1. 发明授权

US06272134B1 Multicast frame support in hardware routing assist 失效
标题翻译：组播帧支持硬件路由协助
公开(公告)号：US06272134B1
公开(公告)日：2001-08-07
申请号：US08975231
申请日：1997-11-20
申请人： Brian M. Bass , Douglas R. Henderson , Edward Hau-chun Ku , Scott J. Lemke , Joseph M. Rash , Loren Blair Reiss , Thomas Eric Ryle
发明人： Brian M. Bass , Douglas R. Henderson , Edward Hau-chun Ku , Scott J. Lemke , Joseph M. Rash , Loren Blair Reiss , Thomas Eric Ryle
IPC分类号： H04L1256
CPC分类号： H04L12/18
摘要： A method and system are provided for increasing processing efficiency associated with data frames transiting a network node having multiple ports. The method and system accomplish their objects via the following. A data frame having a header and data is received. An associated pointer for at least one portion of the received data frame is provided. The associated pointer is provided by segmenting each received data frame into parts, and associating with each segmented part a pointer. Thereafter, a portion of the received data frame is modified independent of other portions of the received data frame via utilization of given one or more of the associated pointers. Additionally, one or more copies of a portion (which can include the whole) of the received data frame is constructed by recalling each segmented part associated with one or more selected ones of the associated pointers. Furthermore, a determination is made as to whether the received header indicates unicast or multicast. In response to this determination, a number of data frames are constructed commensurate with protocols and destination addresses of one or more network nodes to which the constructed number of data frames is to be transmitted. The constructed data frames are transmitted from the node.
摘要翻译：提供了一种用于提高与跨过具有多个端口的网络节点的数据帧相关联的处理效率的方法和系统。该方法和系统通过以下方式完成其对象。接收具有报头和数据的数据帧。提供了用于接收的数据帧的至少一部分的相关联的指针。通过将每个接收到的数据帧分割成多个部分并且与每个分割部分相关联的指针来提供相关联的指针。此后，接收到的数据帧的一部分通过使用给定的一个或多个相关联的指针而被独立于接收到的数据帧的其他部分进行修改。此外，通过调用与相关联的指针中的一个或多个所选择的相关联的指针相关联的每个分段部分来构造所接收的数据帧的一部分（其可以包括整体）的一个或多个副本。此外，确定所接收的报头是指示单播还是组播。响应于该确定，构造与要被发送所构造的数据帧数量的一个或多个网络节点的协议和目的地地址相对应的多个数据帧。构建的数据帧从节点传输。

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