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公开(公告)号：US06175571B1
公开(公告)日：2001-01-16
申请号：US08987331
申请日：1997-12-09
IPC分类号： H04J316
CPC分类号： H04L49/351 , H04L12/5601 , H04L49/201 , H04L49/3009
摘要： A distributed memory switching hub interconnecting heterogeneous local area networks operating at different transmission speeds for receiving, storing and forwarding frames of data. The distributed memory switching hub employs a distributed memory architecture in which memory storage for frames of data received and to be transmitted is located at each low speed LAN port of the distributed memory switching hub. A distributed memory architecture renders unnecessary the need for a central programmable processor or shared common memory to store and forward frames received by the distributed memory switching hub.
摘要翻译： 分布式存储器交换集线器互连以不同传输速度操作的异构局域网，用于接收，存储和转发数据帧。 分布式存储器交换集线器采用分布式存储器架构，其中接收和要发送的数据帧的存储器存储器位于分布式存储器交换集线器的每个低速LAN端口处。 分布式存储器架构使得不需要中央可编程处理器或共享公共存储器来存储和转发由分布式存储器交换集线器接收的帧。
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2.发明授权Use of video DRAM for memory storage in a local area network port of a switching hub 失效将视频DRAM用于交换集线器的局域网端口中的存储器
公开(公告)号：US5812792A
公开(公告)日：1998-09-22
申请号：US606555
申请日：1996-02-26
CPC分类号： G06F5/065 , H04L49/351 , H04L49/201 , H04L49/3009 , H04L49/3018
摘要： A plurality of video dynamic random access memory devices (VRAMs) distributed among low speed local area network ports of a distributed memory switching hub interconnecting heterogeneous local area networks operating at different transmission speeds for receiving, storing and forwarding frames of data. The distributed memory switching hub employs a distributed memory architecture in which VRAM devices located at each low speed LAN port of the distributed memory switching hub store frames of data received or to be forwarded. The VRAM device is comprised of serial access memory (SAM) coupled to and transmitting frames of data with a high speed internal data bus at the same speed of the data bus and dynamic random access memory (RAM) coupled to and transmitting frames of data with a low speed local area network at the same speed of the low speed local area network. The SAM and RAM operate asynchronously with respect to each other to provide simultaneous bidirectional transfer of frames of data between them.
摘要翻译： 分布在分布式存储器交换集线器的低速局域网端口之间的多个视频动态随机存取存储器件（VRAM），其互连以不同传输速度工作的异构局域网，用于接收，存储和转发数据帧。 分布式存储器交换集线器采用分布式存储器架构，其中位于分布式存储器交换集线器的每个低速LAN端口处的VRAM设备存储接收或转发的数据帧。 VRAM设备由串行存取存储器（SAM）组成，串行存取存储器（SAM）以与数据总线相同的速度与高速内部数据总线耦合并传输数据帧，并且动态随机存取存储器（RAM）耦合到数据帧和数据帧， 低速局域网以低速局域网的速度相同。 SAM和RAM相对于彼此异步运行，以提供它们之间的数据帧的同时双向传送。
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3.发明授权System for transmitting data between bus and network having device comprising first counter for providing transmitting rate and second counter for limiting frames exceeding rate 失效用于在总线和网络之间传输数据的系统，具有包括用于提供发送速率的第一计数器和用于限制超出速率的帧的第二计数器的装置
公开(公告)号：US5604867A
公开(公告)日：1997-02-18
申请号：US279468
申请日：1994-07-22
申请人： Michael J. Harwood
发明人： Michael J. Harwood
CPC分类号： H04L47/10 , H04L49/351 , H04L12/46 , H04L49/201 , H04L49/3009
摘要： Multicast and broadcast frames transmission rate logic limiting the rate at which multicast or broadcast frames are forwarded by a MAC layer device interconnecting local area networks such as a bridge or switching hub, so as to prevent multicast or broadcast storms from propagating from one local area network to another local area network. Such logic is distributed among a plurality of local area network (LAN) ports of a switching hub, allowing the overall maximum rate at which such frames may be transmitted to be individually tuned on a per LAN port basis. The transmission rate logic includes a burst capability, in which the overall rate to which multicast and broadcast frames may be limited can be exceeded for a finite number of such frames. The burst capability may also be individually tuned on a per LAN port basis.
摘要翻译： 组播和广播帧传输速率逻辑限制了组播或广播帧由互连局域网（如桥接器或交换集线器）的MAC层设备转发的速率，以防止组播或广播风暴从一个局域网传播 到另一个局域网。 这种逻辑分布在交换集线器的多个局域网（LAN）端口之间，允许这样的帧可以被传输的总体最大速率在每个LAN端口上单独调谐。 传输速率逻辑包括突发能力，其中对于有限数量的这样的帧可以超过多播和广播帧可能被限制的总速率。 突发能力也可以在每个LAN端口基础上单独调整。
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