公开(公告)号：US06546010B1

公开(公告)日：2003-04-08

申请号：US09244430

申请日：1999-02-04

Applicant: Shashank C. Merchant ,  Ching Yu ,  Robert Alan Williams

Inventor： Shashank C. Merchant ,  Ching Yu ,  Robert Alan Williams

IPC: H04L1228

CPC classification number: H04L49/253 ,  H04L49/15 ,  H04L49/1553 ,  H04L49/20 ,  H04L49/30 ,  H04L49/3009 ,  H04L49/3054 ,  H04L49/351 ,  H04L49/352 ,  H04L49/354 ,  H04L49/45

Abstract: Network switch modules are cascaded in a prescribed sequence to support higher port requirements. The network switch modules may circulate a received frame indefinitely if the frame is not destined for any one of the output ports of the cascaded arrangement of network switch modules. Frame forwarding logic within each of the cascaded network switch modules is employed to determine when a network switch module should cease forwarding the received frame. Specifically, the frame forwarding logic takes the frame out of circulation based upon the sequence identifier of the network switch module and an embedded identifier associated with the frame.

Abstract translation: 网络交换机模块按规定的顺序级联以支持更高端口要求。 网络交换机模块可以无限期地循环接收的帧，如果该帧不是用于网络交换机模块的级联布置的任何一个输出端口。 采用每个级联网络交换机模块内的帧转发逻辑来确定网络交换机模块何时应停止转发所接收的帧。 具体地，帧转发逻辑基于网络交换模块的序列标识符和与该帧相关联的嵌入标识符，使帧不在流行中。

公开(公告)号：US5933413A

公开(公告)日：1999-08-03

申请号：US782271

申请日：1997-01-13

Applicant: Shashank C. Merchant ,  Jeffrey Roy Dwork

Inventor： Shashank C. Merchant ,  Jeffrey Roy Dwork

IPC: H04L12/56 ,  H04L12/54

CPC classification number: H04L49/9078 ,  H04L49/90 ,  H04L49/901

Abstract: A network interface stores data frames between a host computer and a network in a buffer memory. The network interface stores data frames received from the host computer via a peripheral component interconnect (PCI) bus in a transmit buffer for transmission on the network. The network interface also stores data from the network in a receive buffer for transfer to a host computer memory via the PCI bus. A priority control selectively allocates host computer resources based on network transmission and network reception by the network interface, and based on available space in the receive buffer, available data in the transmit buffer, and the estimated length of data packets received from the network. The selective allocation of host computer resources minimizes transmit buffer underflow and receive buffer overflow.

Abstract translation: 网络接口将数据帧存储在主计算机和缓冲存储器中的网络之间。 网络接口通过发送缓冲器中的外围组件互连（PCI）总线存储从主计算机接收的数据帧，以在网络上进行传输。 网络接口还将来自网络的数据存储在接收缓冲器中，以经由PCI总线传送到主计算机存储器。 优先级控制基于网络接口的网络传输和网络接收，并且基于接收缓冲器中的可用空间，发送缓冲器中的可用数据以及从网络接收的数据分组的估计长度来选择性地分配主机计算机资源。 主机资源的选择性分配最小化了发送缓冲区下溢和接收缓冲区溢出。