专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06401147B1 Split-queue architecture with a first queue area and a second queue area and queue overflow area having a trickle mode and an overflow mode based on prescribed threshold values 有权
标题翻译：具有第一队列区域和第二队列区域的分组队列架构以及基于规定阈值的具有涓流模式和溢出模式的队列溢出区域
公开(公告)号：US06401147B1
公开(公告)日：2002-06-04
申请号：US09317147
申请日：1999-05-24
申请人： Jinqlih Sang , Edward Yang , Bahadir Erimli
发明人： Jinqlih Sang , Edward Yang , Bahadir Erimli
IPC分类号： G06F300
CPC分类号： H04L47/6215 , H04L47/24 , H04L47/29 , H04L49/30 , H04L49/3027 , H04L49/351 , H04L49/90 , H04L49/9078
摘要： A programmable split-queue structure includes a first queue area for receiving entries, a second queue area for outputting entries input to said first queue area, and a queue overflow engine logically coupled to the first queue area and the second queue area. The queue overflow engine functions to transfer entries from the first queue area to the second queue area using one of two transfer modes. The queue overflow engine selects the most appropriate transfer mode based on a prescribed threshold value that can be dynamically programmed. An overflow storage area having high capacity may be provided in an external memory in order to increase the overall capacity of the queue structure.
摘要翻译：可编程分组队列结构包括用于接收条目的第一队列区域，用于输出输入到所述第一队列区域的条目的第二队列区域以及逻辑耦合到所述第一队列区域和所述第二队列区域的队列溢出引擎。队列溢出引擎用于使用两种传输模式之一将条目从第一队列区域传送到第二队列区域。队列溢出引擎基于可以动态编程的规定阈值来选择最合适的传输模式。可以在外部存储器中提供具有高容量的溢出存储区域，以便增加队列结构的总体容量。

2. 发明授权

US06192028B1 Method and apparatus providing programmable thresholds for half-duplex flow control in a network switch 失效
标题翻译：为网络交换机中的半双工流量控制提供可编程阈值的方法和装置
公开(公告)号：US06192028B1
公开(公告)日：2001-02-20
申请号：US08992848
申请日：1997-12-18
申请人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Eric Tsin-Ho Leung , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
发明人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Eric Tsin-Ho Leung , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
IPC分类号： H04L1256
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A network switch having a shared memory architecture for storing data frames has a set of programmable thresholds that specify when flow control should be initiated on a selected network port. The network switch includes a queue for storing free frame pointers, each specifying available memory locations in an external memory for storing data frames received from a network station. The network switch takes a frame pointer from a free buffer queue for each received data frame, and stores the received data frame in the location in external memory specified by the frame pointer while a decision making engine within the switch determines the appropriate destination ports. Flow control is initiated on a half-duplex network port by transmitting a phantom packet to a transmitting network station if the output buffer of a destination port exceeds a programmed high threshold, or if the output buffer of the destination port exceeds a low programmed threshold and the queue of free frame pointers falls below a low programmable threshold. The switch thus provides flexibility in providing selective collisions with transmitting stations to minimize the possibility of network congestion without wasting network bandwidth with unnecessary collisions.
摘要翻译：具有用于存储数据帧的共享存储器架构的网络交换机具有一组可编程阈值，其指定何时应当在所选择的网络端口上启动流量控制。网络交换机包括用于存储空闲帧指针的队列，每个指定用于存储从网络站接收的数据帧的外部存储器中的可用存储器位置。网络交换机从每个接收到的数据帧的空闲缓冲器队列中获取帧指针，并且将接收到的数据帧存储在由帧指针指定的外部存储器中的位置，同时交换机内的决策引擎确定适当的目的地端口。如果目的地端口的输出缓冲区超过编程的高阈值，或者目的端口的输出缓冲区超过低编程阈值，则通过将虚拟分组发送到发射网络站，在半双工网络端口上启动流量控制，空闲帧指针的队列低于低可编程阈值。因此，交换机提供灵活性，以提供与发射站的选择性冲突，以最小化网络拥塞的可能性，而不浪费网络带宽与不必要的冲突。

3. 发明授权

US6167054A Method and apparatus providing programmable thresholds for full-duplex flow control in a network switch 失效
标题翻译：为网络交换机中的全双工流量控制提供可编程阈值的方法和装置
公开(公告)号：US6167054A
公开(公告)日：2000-12-26
申请号：US992913
申请日：1997-12-18
申请人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Peter Ka-Fai Chow , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
发明人： Philip Simmons , Bahadir Erimli , Jinqlih Sang , Peter Ka-Fai Chow , Ian Crayford , Jayant Kadambi , Denise Kerstein , Thomas Jefferson Runaldue
IPC分类号： H04L13/08 , G06F11/26 , G06F12/00 , G06F13/00 , G06F13/10 , G06F13/16 , G06F13/24 , G06F15/00 , G06F15/16 , G08B5/00 , G11C11/412 , H04B7/14 , H04J3/02 , H04J3/12 , H04J3/22 , H04J3/24 , H04L12/18 , H04L12/24 , H04L12/28 , H04L12/413 , H04L12/44 , H04L12/46 , H04L12/50 , H04L12/54 , H04L12/66 , H04L12/861 , H04L12/863 , H04L12/879 , H04L12/931 , H04L12/933 , H04L12/935 , H04L12/937 , H04L12/939 , H04L12/947 , H04Q3/545 , H04Q11/00
CPC分类号： H04L49/3009 , G06F13/1605 , G06F13/24 , G11C11/412 , H04L12/1863 , H04L12/4641 , H04L12/4645 , H04L12/467 , H04L41/0213 , H04L47/50 , H04L47/6225 , H04L49/103 , H04L49/201 , H04L49/25 , H04L49/255 , H04L49/30 , H04L49/3027 , H04L49/3054 , H04L49/351 , H04L49/354 , H04L49/40 , H04L49/50 , H04L49/552 , H04L49/555 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9063 , H04L49/9073 , H04L49/9078 , H04L49/9084 , H04Q3/54591 , H04Q2213/1316 , H04Q2213/13162
摘要： A network having a shared memory architecture for storing data frames has a set of programmable thresholds that specify when flow control should be initiated on full-duplex network ports. The network switch includes a queue for storing free frame pointers that specify available memory locations in an external memory for storing data frames received from a network station. The network switch takes a frame pointer from a free buffer queue for each received data frame, and stores the received data frame in the location in external memory specified by the frame pointer while a decision making engine within the switch determines the appropriate destination ports. Flow control is initiated based on the number of available frame pointers by transmitting a PAUSE frame having a selected PAUSE interval to a transmitting network station. Specifically, a full-duplex port will output a PAUSE frame having a short, medium, or long programmed pause interval if the free buffer pool of available frame pointers falls below a high, medium, or low programmable threshold, respectively. The switch thus provides flexibility in generating variable-length PAUSE control frames to minimize wasting network bandwidth.
摘要翻译：具有用于存储数据帧的共享存储器架构的网络具有一组可编程阈值，其指定何时应当在全双工网络端口上启动流量控制。网络交换机包括用于存储空闲帧指针的队列，其指定用于存储从网络站接收的数据帧的外部存储器中的可用存储器位置。网络交换机从每个接收到的数据帧的空闲缓冲器队列中获取帧指针，并且将接收到的数据帧存储在由帧指针指定的外部存储器中的位置，同时交换机内的决策引擎确定适当的目的地端口。通过将具有所选暂停间隔的暂停帧发送到发射网络站，基于可用帧指针的数量启动流控制。具体来说，如果可用帧指针的空闲缓冲池分别低于高，中或低可编程阈值，则全双工端口将输出具有短，中或长编程暂停间隔的暂停帧。因此，交换机可以灵活地生成可变长度的PAUSE控制帧，以最大限度地减少浪费的网络带宽。

4. 发明授权

US07031305B1 Apparatus and method for programmable memory access slot assignment 有权
标题翻译：可编程存储器存取槽分配的装置和方法
公开(公告)号：US07031305B1
公开(公告)日：2006-04-18
申请号：US09317156
申请日：1999-05-24
申请人： Ching Yu , Xiaohua Zhuang , Bahadir Erimli , John M. Chiang , Shashank Merchant , Robert Williams , Edward Yang , Chandan Egbert , Vallath Nandakumar , Ian Lam , Eric Tsin-Ho Leung
发明人： Ching Yu , Xiaohua Zhuang , Bahadir Erimli , John M. Chiang , Shashank Merchant , Robert Williams , Edward Yang , Chandan Egbert , Vallath Nandakumar , Ian Lam , Eric Tsin-Ho Leung
IPC分类号： H04L12/28
CPC分类号： H04L49/351 , H04L49/205 , H04L49/3027 , H04L49/354
摘要： A network switch having switch ports for full-duplex communication of data packets with respective network nodes according to Ethernet (IEEE 802.3) protocol that flexibly assigns memory access slots to access an external memory according to programmable information. A scheduler within an external memory interface assigns the memory access slots to the respective network switch ports according to a programmed sequence written into an assignment table memory from an external programmable data storage device.
摘要翻译：根据以太网（IEEE 802.3）协议，具有根据可编程信息灵活地分配存储器访问时隙以访问外部存储器的数据分组与各网络节点全双工通信的交换机端口的网络交换机。外部存储器接口中的调度器根据从外部可编程数据存储设备写入指配表存储器的编程序列，将存储器访问时隙分配给相应的网络交换机端口。

5. 发明授权

US06501734B1 Apparatus and method in a network switch for dynamically assigning memory interface slots between gigabit port and expansion port 有权
标题翻译：网络交换机中的装置和方法，用于在千兆端口和扩展端口之间动态分配存储器接口槽
公开(公告)号：US06501734B1
公开(公告)日：2002-12-31
申请号：US09317150
申请日：1999-05-24
申请人： Ching Yu , Xiaohua Zhuang , Bahadir Erimli , John M. Chiang , Shashank Merchant , Robert Williams , Edward Yang , Chandan Egbert , Vallath Nandakumar , Ian Lam , Eric Tsin-Ho Leung
发明人： Ching Yu , Xiaohua Zhuang , Bahadir Erimli , John M. Chiang , Shashank Merchant , Robert Williams , Edward Yang , Chandan Egbert , Vallath Nandakumar , Ian Lam , Eric Tsin-Ho Leung
IPC分类号： H04J116
CPC分类号： H04L49/103 , H04L49/254 , H04L49/3027 , H04L49/351 , H04L49/352 , H04L49/354 , H04L49/90 , H04L49/901
摘要： A network switch having switch ports for full-duplex communication of data packets with respective network nodes according to Ethernet (IEEE 802.3) protocol dynamically allocates external memory bandwidth slots between high data rate ports. An external memory interface determines if a high data rate port makes a request for a bandwidth slot and grants the request if made. The slot is taken from a selected group which is a subset of the total number of slots. If a request for the slot is not made, the external memory interface assigns the slot to another high data rate port. Lower data rate ports in the network switch are assigned fixed slots from those slots not from within the selected group of slots. The dynamic allocation of bandwidth slots between the high data rate port enables the efficient use of limited memory bandwidth resources.
摘要翻译：具有根据以太网（IEEE 802.3）协议的具有各个网络节点的数据分组全双工通信的交换机端口的网络交换机动态地在高数据速率端口之间分配外部存储器带宽时隙。外部存储器接口确定高数据速率端口是否对带宽槽进行请求，如果发出请求则确定该请求。时隙是从所选择的组中获取的，该组是总时隙数的子集。如果没有对插槽进行请求，则外部存储器接口将插槽分配给另一个高数据速率端口。网络交换机中的较低数据速率端口从这些时隙中分配固定时隙，而不是在所选择的时隙组内。高数据速率端口之间的带宽时隙的动态分配使得能够有效地利用有限的存储器带宽资源。

6. 发明授权

US07143185B1 Method and apparatus for accessing external memories 有权
标题翻译：用于访问外部存储器的方法和装置
公开(公告)号：US07143185B1
公开(公告)日：2006-11-28
申请号：US09650195
申请日：2000-08-29
申请人： Feng-Jong Edward Yang , Bahadir Erimli
发明人： Feng-Jong Edward Yang , Bahadir Erimli
IPC分类号： G06F15/16 , G06F15/173 , G06F15/167 , G06F12/00
CPC分类号： H04L49/00 , H04L49/90 , H04L49/9063 , H04L49/9073
摘要： A network switch that controls the communication of data frames between stations includes receive devices that correspond to ports on the network switch. The receive devices receive and store data frame information from the network stations. The network switch also includes an external memory interface that receives the data frame information from the receive devices and transfers the data frame information to multiple external memory devices.
摘要翻译：控制站间数据帧通信的网络交换机包括与网络交换机上的端口对应的接收设备。接收设备从网络站接收和存储数据帧信息。网络交换机还包括从接收设备接收数据帧信息并将数据帧信息传送到多个外部存储器设备的外部存储器接口。

7. 发明授权

US06442137B1 Apparatus and method in a network switch for swapping memory access slots between gigabit port and expansion port 失效
标题翻译：用于交换千兆端口和扩展端口之间的存储器访问槽的网络交换机中的装置和方法
公开(公告)号：US06442137B1
公开(公告)日：2002-08-27
申请号：US09317143
申请日：1999-05-24
申请人： Ching Yu , Xiaohua Zhuang , Bahadir Erimli , John M. Chiang , Shashank Merchant , Robert Williams , Edward Yang , Chandan Egbert , Vallath Nandakumar , Ian Lam , Eric Tsin-Ho Leung
发明人： Ching Yu , Xiaohua Zhuang , Bahadir Erimli , John M. Chiang , Shashank Merchant , Robert Williams , Edward Yang , Chandan Egbert , Vallath Nandakumar , Ian Lam , Eric Tsin-Ho Leung
IPC分类号： H04L522
CPC分类号： H04L49/901 , H04L49/103 , H04L49/3027 , H04L49/351 , H04L49/352 , H04L49/90 , H04L49/9031 , H04L49/9078
摘要： A network switch having switch ports for full-duplex communication of data packets with respective network nodes according to Ethernet (IEEE 802.3) protocol that allocates a prescribed number of external memory bandwidth slots between high data rate ports based on the compared amount of network traffic on the respective ports. A scheduler within an external memory interface initially assigns memory access slots to the respective high data rate ports according to a prescribed sequence. If the scheduler subsequently detects that the network data traffic on a port having less slots is higher than the traffic on a port having more slots, the slots are swapped between the high data rate ports. Additionally, a clock multiplexer in one of the high data rate ports adjusts the data rate of the port dependent upon the number of slots assigned to that port. The swapping of bandwidth slots between the high data rate ports along with the adjustment of the port clock rate enables the efficient use of limited memory bandwidth resources.
摘要翻译：网络交换机具有用于根据以太网（IEEE 802.3）协议的具有各网络节点的数据分组全双工通信的交换机端口，该协议基于网络流量的比较量在高数据速率端口之间分配规定数量的外部存储器带宽时隙各个端口。外部存储器接口中的调度器根据规定的顺序，初始地将存储器访问时隙分配给相应的高数据速率端口。如果调度器随后检测到具有较少时隙的端口上的网络数据流量高于具有更多时隙的端口上的流量，则这些时隙在高数据速率端口之间交换。此外，高数据速率端口之一中的时钟多路复用器根据分配给该端口的时隙数来调整端口的数据速率。在高数据速率端口之间交换带宽时隙以及端口时钟速率的调整使得能够有效地使用有限的存储器带宽资源。

8. 发明授权

US07209489B1 Arrangement in a channel adapter for servicing work notifications based on link layer virtual lane processing 有权
标题翻译：基于链路层虚拟通道处理的用于维修工作通知的通道适配器中的布置
公开(公告)号：US07209489B1
公开(公告)日：2007-04-24
申请号：US10052459
申请日：2002-01-23
申请人： Joseph A. Bailey , Joseph Winkles , Norman Hack , Bahadir Erimli
发明人： Joseph A. Bailey , Joseph Winkles , Norman Hack , Bahadir Erimli
IPC分类号： H04L12/28 , H04J3/16 , G06F3/00
CPC分类号： H04L47/10 , H04L47/2425 , H04L47/34
摘要： A host channel adapter is configured for servicing received work notifications based on identifying the work notifications associated with the virtual lanes (VL) having a prescribed ordering position identified by the link layer operations. The host channel adapter, in response to receiving a work notification for a prescribed service level (SL), determines the virtual lane associated with the specified service level based on a prescribed service level to virtual lane mapping. If necessary (e.g., for an unreliable datagram service type), the work notification supplies the prescribed service level (SL) for the host channel adapter. The host channel adapter also determines an ordering position for the determined virtual lane from the link layer module, and selectively services the work notification based on the corresponding ordering position.
摘要翻译：主机通道适配器被配置为基于识别与具有由链路层操作所标识的规定排序位置的虚拟通道（VL）相关联的工作通知来服务接收到的工作通知。主机通道适配器响应于接收到规定服务级别（SL）的工作通知，基于规定的服务级别到虚拟通道映射来确定与指定服务级别相关联的虚拟通道。如果需要（例如，对于不可靠的数据报服务类型），工作通知提供用于主机通道适配器的规定服务级别（SL）。主机通道适配器还确定来自链路层模块的所确定的虚拟通道的排序位置，并且基于相应的排序位置选择性地服务工作通知。

9. 发明授权

US07151774B1 Method and apparatus for trunking links having different transmission rates 有权
标题翻译：具有不同传输速率的中继链路的方法和装置
公开(公告)号：US07151774B1
公开(公告)日：2006-12-19
申请号：US09879088
申请日：2001-06-13
申请人： Robert Alan Williams , Bahadir Erimli
发明人： Robert Alan Williams , Bahadir Erimli
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/4625 , H04L45/245 , H04L49/205 , H04L49/3009 , H04L49/351 , Y02D50/30
摘要： A network device that controls the communication of data frames between stations includes ports that receive data frames from the stations and transmit the data frames. A number of the ports may be configured as a trunk and at least one of the ports in the trunk may be configured to transmit data frames at a higher speed than the other ports. The network device further includes data frame processing logic that identifies ports on which to transmit the received data frames. The data frame processing logic also determines whether the identified port is part of the trunk. When the port is part of the trunk, the data frame processing logic determines an appropriate port on which to transmit the data frame. The data frame processing logic may determine the appropriate port based on the priority associated with the received data frame so that higher priority data frames are transmitted on higher speed ports.
摘要翻译：控制站间数据帧通信的网络设备包括从站接收数据帧并发送数据帧的端口。多个端口可以被配置为中继线，并且中继线中的至少一个端口可以被配置为以比其他端口更高的速度发送数据帧。网络设备还包括识别在其上发送所接收的数据帧的端口的数据帧处理逻辑。数据帧处理逻辑还确定所识别的端口是否是中继线的一部分。当端口是中继线的一部分时，数据帧处理逻辑确定发送数据帧的适当端口。数据帧处理逻辑可以基于与接收的数据帧相关联的优先级来确定适当的端口，使得较高优先级的数据帧在较高速度的端口上传输。

10. 发明授权

US07079533B1 Systems and methods for bypassing packet lookups 有权
标题翻译：用于绕过数据包查找的系统和方法
公开(公告)号：US07079533B1
公开(公告)日：2006-07-18
申请号：US09846280
申请日：2001-05-02
申请人： Bahadir Erimli , Yatin R. Acharya
发明人： Bahadir Erimli , Yatin R. Acharya
IPC分类号： H04L12/54
CPC分类号： H04L49/351 , H04L49/15 , H04L49/3009
摘要： A network device determines forwarding information for received data frames. The network device includes input ports, queuing logic, a forwarding engine, and a port filter. The input ports receive data frames. The queuing logic transfers at least some of the received data frames to an external memory. The forwarding engine generates forwarding information for at least some of the data frames transferred by the queuing logic to the external memory. The port filter stores forwarding information for one or more of the received data frames and analyzes each of the received data frames to determine whether there is stored forwarding information related to the received data frame. When there is stored forwarding information related to the received data frame, the port filter uses the stored forwarding information to forward the received data frame.
摘要翻译：网络设备确定接收到的数据帧的转发信息。网络设备包括输入端口，排队逻辑，转发引擎和端口过滤器。输入端口接收数据帧。排队逻辑将至少一些接收到的数据帧传送到外部存储器。转发引擎为排队逻辑传送到外部存储器的至少一些数据帧生成转发信息。端口过滤器存储一个或多个接收到的数据帧的转发信息，并分析每个接收到的数据帧，以确定是否存在与接收到的数据帧相关的转发信息。当存在与接收到的数据帧相关的转发信息时，端口过滤器使用所存储的转发信息来转发接收到的数据帧。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式