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1. 发明授权

US5949788A Method and apparatus for multipoint trunking 失效
标题翻译：多点中继的方法和装置
公开(公告)号：US5949788A
公开(公告)日：1999-09-07
申请号：US852146
申请日：1997-05-06
申请人： G. Stodel Friedman , David J. Husak , Stephen L. Van Seters , Edward A. Heiner, Jr.
发明人： G. Stodel Friedman , David J. Husak , Stephen L. Van Seters , Edward A. Heiner, Jr.
IPC分类号： H04K1/10 , H04L29/04 , H04L29/06
CPC分类号： H04L12/4604
摘要： A method and apparatus are disclosed which permit multipoint trunking among a plurality of network devices connected by a trunk comprising at least two physical links. A trunk control message protocol (TCMP) is described which assures that message traffic may be delivered to the respective devices over the individual links of the trunk prior to inclusion of the respective links as active links in the trunk. The trunk acts as a single network port for each of the devices utilizing the trunk and is layered over a plurality of media access control (MAC) ports which interface to the respective links. The disclosed trunking technique and apparatus permit the bandwidth of the trunk to be increased in increments through the addition of links to the trunk.
摘要翻译：公开了一种允许通过包括至少两个物理链路的中继线连接的多个网络设备之间的多点中继的方法和装置。描述了一种中继控制消息协议（TCMP），其确保在将各个链路包括在中继线中的活动链路之前，消息流量可以经由中继线的各个链路被传送到相应的设备。中继线充当利用中继线的每个设备的单个网络端口，并且分层在与相应链路相连接的多个媒体访问控制（MAC）端口上。所公开的中继技术和装置允许通过添加到中继线的链路来增加中继线的带宽。

2. 发明授权

US5651002A Internetworking device with enhanced packet header translation and memory 失效
标题翻译：具有增强的数据包报头转换和内存的互联设备
公开(公告)号：US5651002A
公开(公告)日：1997-07-22
申请号：US502087
申请日：1995-07-12
申请人： Stephen L. Van Seters , Christopher P. Lawler , David C. Ready
发明人： Stephen L. Van Seters , Christopher P. Lawler , David C. Ready
IPC分类号： H04L12/46 , H04L12/56 , H04L29/06 , H04J3/26
CPC分类号： H04L12/4625 , H04L49/90 , H04L69/18
摘要： An internetworking device providing enhanced packet header translation for translating the format of a header associated with a source network into a header format associated with a destination network of a different type than the source network. The device includes a memory for storing an address portion of a received packet header in a first block of buffer locations and the remainder of the received packet in a second block of buffer locations, spaced from the first block of buffer locations by a gap. The gap permits supplemental header information to be written into the buffer when necessary for translation. The device further includes a split memory, having an SRAM portion and a DRAM portion allocated to each buffer, with at least the address portion of a received packet and the gap located in the SRAM portion, so as to optimize the translation performance of the device.
摘要翻译：提供增强的分组报头转换的互联网络设备，用于将与源网络相关联的报头的格式转换为与源网络不同类型的目的地网络相关联的报头格式。该设备包括存储器，用于将缓冲器位置的第一块中接收到的分组报头的地址部分存储，并且将所接收的分组的剩余部分存储在与第一缓冲器位置块间隔开的第二缓冲器位置块中。间隙允许补充标题信息在需要翻译时写入缓冲区。该装置还包括具有分配给每个缓冲器的SRAM部分和DRAM部分的分离存储器，至少具有接收分组的地址部分和位于SRAM部分中的间隙，以便优化设备的转换性能。

3. 发明授权

US5978951A High speed cache management unit for use in a bridge/router 失效
标题翻译：用于桥接/路由器的高速缓存管理单元
公开(公告)号：US5978951A
公开(公告)日：1999-11-02
申请号：US927336
申请日：1997-09-11
申请人： Christopher P. Lawler , Shannon Q. Hill , David Lipschutz , Thomas A. Radogna , John A. Flanders , Robert M. France , Stephen L. Van Seters
发明人： Christopher P. Lawler , Shannon Q. Hill , David Lipschutz , Thomas A. Radogna , John A. Flanders , Robert M. France , Stephen L. Van Seters
IPC分类号： H03M13/09 , H04L12/56 , H04L12/66 , H04Q11/04 , H03M13/00
CPC分类号： H04L49/309 , H03M13/09 , H04L12/66 , H04Q11/0478 , H04L2012/5652
摘要： A method and cache management for a bridge or bridge/router providing high-speed, flexible address cache management. The unit maintains a network address cache and an age table, searches the cache for layer 2 and layer 3 addresses from received frame headers, and returns address search results. The unit includes an interface permitting processor manipulation of the cache and age table, and supports a 4-way set associative cache to store the network addresses. A plurality of functions implemented in hardware enables software manipulation of the associated cache. Four cache operating modes are selectable. The unit can identify and select destination ports within a Load Balanced Port Group for frame forwarding. The unit utilizes Virtual LAN identification in conjunction with a MAC address for lookup in the cache. A cyclic redundancy code for each address to be looked up in the cache is used as an index into the cache. If a cache thrash rate exceeds a predetermined threshold, CRC table values can be rewritten. Four time-sliced cache lookup units are provided, each consisting of a cache lookup controller for comparing a received network address to an address retrieved from an identified cache set.
摘要翻译：一种用于提供高速，灵活的地址缓存管理的桥或桥/路由器的方法和缓存管理。该单元维护网络地址缓存和年龄表，从接收到的帧头中搜索缓存中的第2层和第3层地址，并返回地址搜索结果。该单元包括允许处理器处理高速缓存和年龄表的接口，并且支持4路组关联高速缓存来存储网络地址。在硬件中实现的多个功能使得能够对相关联的高速缓存进行软件操纵。可选择四种缓存操作模式。该单元可以识别和选择负载平衡端口组中的目标端口进行帧转发。该单元结合使用虚拟LAN标识与MAC地址进行缓存查找。将要在高速缓存中查找的每个地址的循环冗余码用作高速缓存的索引。如果高速缓存闪存速率超过预定阈值，则可以重写CRC表值。提供四个时间片缓存查找单元，每个高速缓存查找单元由用于将接收到的网络地址与从所识别的高速缓存集中检索到的地址进行比较的高速缓存查找控制器组

4. 发明授权

US6108692A Method and apparatus for internetworking buffer management 失效
标题翻译：网络化缓存管理的方法和装置
公开(公告)号：US6108692A
公开(公告)日：2000-08-22
申请号：US24415
申请日：1998-02-17
申请人： Stephen L. Van Seters , Stephen A. Hauser , Mark A. Sankey , Christopher P. Lawler
发明人： Stephen L. Van Seters , Stephen A. Hauser , Mark A. Sankey , Christopher P. Lawler
IPC分类号： H04L12/56 , H04L29/06 , G06F15/167
CPC分类号： H04L49/9047 , H04L49/90 , H04L49/901 , H04L69/12
摘要： A method and apparatus for receiving and transmitting network frames via an internetworking device, in which a first portion of a total number of buffers is allocated among port-dedicated buffer pools, and a second portion is placed in a common pool accessible by any of the network ports. A frame is received at a first port, and a list of buffers accessible only by that port is referenced to identify buffers not already in use. A second list of buffers in the common pool is referenced to identify unused buffers for use if insufficient unused buffer space is available in the port-dedicated buffer pool. Frame data is then stored in the identified buffer(s). Upon retransmission, the buffer(s) used to store the. transmitted frame is released to the port-dedicated and/or common buffer pool(s).
摘要翻译：一种用于经由互联网络设备接收和发送网络帧的方法和装置，其中，在端口专用缓冲池之间分配总数量的缓冲器的第一部分，并且第二部分被放置在可由任何网络端口在第一个端口接收一个帧，并且引用只能被该端口访问的缓冲区列表，以识别尚未使用的缓冲区。引用公共池中缓冲区的第二个列表来标识未使用的缓冲区，以便在端口专用缓冲池中没有足够的未使用的缓冲区空间。然后将帧数据存储在所识别的缓冲器中。重发时，用于存储的缓冲区。传输帧被释放到端口专用和/或公用缓冲池。

5. 发明授权

US5978378A Method and apparatus for VLAN support 失效
标题翻译：支持VLAN的方法和设备
公开(公告)号：US5978378A
公开(公告)日：1999-11-02
申请号：US927641
申请日：1997-09-11
申请人： Stephen L. Van Seters , Ryan T. Ross , Leonard Schwartz , David C. Ready , John A. Flanders , Robert P. Ryan , William D. Townsend
发明人： Stephen L. Van Seters , Ryan T. Ross , Leonard Schwartz , David C. Ready , John A. Flanders , Robert P. Ryan , William D. Townsend
IPC分类号： H04L12/46 , H04L12/28
CPC分类号： H04L12/4645
摘要： Logic circuits are employed in a telecommunications bridge/router device to examine a received frame to determine which VLAN, if any, the frame is associated with. The protocol type, receive port identification, and receive VLAN tag are employed to determine the transmit port identification and transmit VLAN tag. A predefined table indicates which ports within the bridge/router are associated with the VLAN. The frame is excluded from transmission through the ports that are not associated with members of the respective the VLAN.
摘要翻译：电信桥/路由器设备中使用逻辑电路来检查接收到的帧以确定该帧与哪个VLAN相关联。采用协议类型，接收端口标识和接收VLAN标签来确定发送端口标识和发送VLAN标签。一个预定义的表格指出了网桥/路由器中哪些端口与VLAN相关联。通过不与相应VLAN的成员关联的端口将该帧排除在传输之外。

6. 发明授权

US5825774A Packet characterization using code vectors 失效
标题翻译：使用代码向量的数据包表征
公开(公告)号：US5825774A
公开(公告)日：1998-10-20
申请号：US501484
申请日：1995-07-12
申请人： David C. Ready , Stephen L. Van Seters , John A. Flanders
发明人： David C. Ready , Stephen L. Van Seters , John A. Flanders
IPC分类号： H04L12/56 , H04L12/46
CPC分类号： H04L49/9063 , H04L49/90 , H04L69/08 , H04L69/12 , H04L69/161 , H04L69/16 , Y10S370/906 , Y10S370/91 , Y10S370/911
摘要： A method and apparatus for increasing the throughput of a communications internetworking device. The method involves the generating, by internetworking device hardware, of a predetermined code vector in response to the current state of the communications internetworking device and information contained in a data packet received by the internetworking device. In response to the hardware generated predetermined code vector, a predetermined software routine is executed by a microprocessor in the internetworking device which controls how the data packet is to be transmitted to its destination. By using hardware to generate the code vector, time is saved over having software determine how the internetworking device is to handle the data packet.
摘要翻译：一种用于增加通信网络互联设备的吞吐量的方法和装置。该方法涉及通过互联网络设备硬件产生响应于通信互联网络设备的当前状态和包含在由互联网络设备接收的数据分组中的信息的预定码矢量。响应于硬件产生的预定代码向量，预定的软件程序由控制如何将数据分组传输到其目的地的互联网络设备中的微处理器执行。通过使用硬件来生成代码向量，通过使软件确定互联网络设备如何处理数据包来节省时间。

7. 发明授权

US5812775A Method and apparatus for internetworking buffer management 失效
标题翻译：网络化缓存管理的方法和装置
公开(公告)号：US5812775A
公开(公告)日：1998-09-22
申请号：US501355
申请日：1995-07-12
申请人： Stephen L. Van Seters , Stephen A. Hauser , Mark A. Sankey , Christopher P. Lawler
发明人： Stephen L. Van Seters , Stephen A. Hauser , Mark A. Sankey , Christopher P. Lawler
IPC分类号： H04L12/56 , H04L29/06 , G06F15/167
CPC分类号： H04L49/9047 , H04L49/90 , H04L49/901 , H04L69/12
摘要： A method and apparatus for receiving and transmitting network frames via an internetworking device, in which a first portion of a total number of buffers is allocated among port-dedicated buffer pools, and a second portion is placed in a common pool accessible by any of the network ports. A frame is received at a first port, and a list of buffers accessible only by that port is referenced to identify buffers not already in use. A second list of buffers in the common pool is referenced to identify unused buffers for use if insufficient unused buffer space is available in the port-dedicated buffer pool. Frame data is then stored in the identified buffer(s). Upon retransmission, the buffer(s) used to store the transmitted frame is released to the port-dedicated and/or common buffer pool(s).
摘要翻译：一种用于经由互联网络设备接收和发送网络帧的方法和装置，其中，在端口专用缓冲池之间分配总数量的缓冲器的第一部分，并且第二部分被放置在可由任何网络端口在第一个端口接收一个帧，并且引用只能被该端口访问的缓冲区列表，以识别尚未使用的缓冲区。引用公共池中缓冲区的第二个列表来标识未使用的缓冲区，以便在端口专用缓冲池中没有足够的未使用的缓冲区空间。然后将帧数据存储在所识别的缓冲器中。在重传时，用于存储发送帧的缓冲器被释放到端口专用和/或公用缓冲池。

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