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1. 发明申请

US20190212935A1 LAZY MEMORY DEDUPLICATION 审中-公开
公开(公告)号：US20190212935A1
公开(公告)日：2019-07-11
申请号：US15868787
申请日：2018-01-11
申请人： Chandan Egbert , Amin Firoozshahian , Mahesh Maddury , John Stevenson , Henk Neefs , Omid Azizi
发明人： Chandan Egbert , Amin Firoozshahian , Mahesh Maddury , John Stevenson , Henk Neefs , Omid Azizi
IPC分类号： G06F3/06 , G06F12/02 , G06F12/0811 , G06F12/084 , G06F12/0868
摘要： Various systems and methods for computer memory management are described herein. A system for computer memory management includes a first memory device including a mapping table; a second memory device including a staging area; a third memory device including a dedup data region; and a controller operable to: receive a memory access request, the memory access request including an address and data; write the data to the staging area; and update the mapping table with the address.

2. 发明授权

US6084878A External rules checker interface 失效
标题翻译：外部规则检查器界面
公开(公告)号：US6084878A
公开(公告)日：2000-07-04
申请号：US993715
申请日：1997-12-18
申请人： Ian Crayford , Denise Kerstein , Peter Ka-Fai Chow , Chandan Egbert , Thomas J. Runaldue
发明人： Ian Crayford , Denise Kerstein , Peter Ka-Fai Chow , Chandan Egbert , Thomas J. Runaldue
IPC分类号： H04L12/46 , H04L12/56 , H04L12/28 , H04L12/54
CPC分类号： H04L12/4641 , H04L49/25 , H04L49/3027 , H04L49/351 , H04L49/354
摘要： An interface located on a network switch transmits header information to an external device that makes data forwarding decisions. The interface receives and transmits header information that includes the source and destination address of the data. The external device generates data forwarding information and transmits the information back to the switch via the interface device. The network switch uses the information obtained via the interface and forwards the data packets to the appropriate destination.
摘要翻译：位于网络交换机上的接口将报头信息发送到进行数据转发决策的外部设备。该接口接收并发送包括数据的源地址和目标地址的标题信息。外部设备生成数据转发信息，并通过接口设备将信息发送回交换机。网络交换机使用通过接口获得的信息，并将数据包转发到适当的目的地。

3. 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。

4. 发明授权

US06407960B1 Arrangement for programming selected device registers during initialization from an external memory 有权
标题翻译：从外部存储器初始化期间对选定器件寄存器进行编程的布置
公开(公告)号：US06407960B1
公开(公告)日：2002-06-18
申请号：US09654831
申请日：2000-09-01
申请人： Chandan Egbert , Marufa Kaniz
发明人： Chandan Egbert , Marufa Kaniz
IPC分类号： G11C800
CPC分类号： G06F9/4411
摘要： An integrated device includes an external memory interface that includes address decoding logic configured for identifying a destination device register based on register address information retrieved from an external memory. The external memory interface, upon identifying the destination device register, loads the destination device register with register data read from the external memory, for example contiguously following the corresponding register address information. Hence, the integrated device can be programmed on a per register basis, without the necessity of an EEPROM map.
摘要翻译：集成设备包括外部存储器接口，其包括被配置为基于从外部存储器检索的寄存器地址信息来识别目的地设备寄存器的地址解码逻辑。外部存储器接口在识别目标设备寄存器时，将目的地设备寄存器加载到从外部存储器读取的寄存器数据，例如连续地跟随对应的寄存器地址信息。因此，可以在每个寄存器的基础上对集成器件进行编程，而无需使用EEPROM映射。

5. 发明授权

US06356551B1 Method and network switch having dual forwarding models with a virtual lan overlay 失效
标题翻译：具有双重转发模型的方法和网络交换机具有虚拟lan覆盖
公开(公告)号：US06356551B1
公开(公告)日：2002-03-12
申请号：US08993835
申请日：1997-12-18
申请人： Chandan Egbert
发明人： Chandan Egbert
IPC分类号： H04L1228
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 configured for switching data packets across multiple ports uses an address table to generate data forwarding decisions. The address table includes source addresses, destination addresses and data forwarding information. The switch may be configured to generate data forwarding decisions based on two data forwarding models. In the first model, data frames received with unknown source addresses are forwarded and the source addresses are added to the address table. In the second model, data frames received with unknown source address are forwarded without adding information to the address table.
摘要翻译：配置为跨多个端口切换数据包的网络交换机使用地址表来生成数据转发决策。地址表包括源地址，目的地址和数据转发信息。交换机可以被配置为基于两个数据转发模型生成数据转发决策。在第一个模型中，将转发接收到未知源地址的数据帧，并将源地址添加到地址表。在第二个模型中，转发未知源地址的数据帧，而不向地址表添加信息。

6. 发明授权

US06236654B1 Method and apparatus for managing learning in an address table in memory 失效
标题翻译：用于在存储器中的地址表中管理学习的方法和装置
公开(公告)号：US06236654B1
公开(公告)日：2001-05-22
申请号：US08994691
申请日：1997-12-18
申请人： Chandan Egbert
发明人： Chandan Egbert
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 configured for switching data packets across multiple ports uses an address table to generate frame forwarding information. A decision-making device receives a source address of a frame and a receive port number and searches the address table for a match. When the decision-making engine does not find a match, the switch adds an entry to the table including the source address and port number on which the data frame received. The new entry may be validated and used to generate frame forwarding information in subsequent searches of the address table.
摘要翻译：配置为跨多个端口切换数据包的网络交换机使用地址表来生成帧转发信息。决策设备接收帧的源地址和接收端口号，并在地址表中搜索匹配。当决策引擎没有找到匹配项时，交换机会在表中添加一个条目，包括接收到数据帧的源地址和端口号。可以验证新条目并用于在后续地址表的搜索中生成帧转发信息。

7. 发明授权

US6128654A Method and apparatus for transmitting multiple copies by replicating data identifiers 失效
标题翻译：通过复制数据标识符来发送多个副本的方法和装置
公开(公告)号：US6128654A
公开(公告)日：2000-10-03
申请号：US992924
申请日：1997-12-18
申请人： Thomas J. Runaldue , Bahadir Erimli , Chandan Egbert , Eric Tsin-ho Leung , Ian Crayford
发明人： Thomas J. Runaldue , Bahadir Erimli , Chandan Egbert , Eric Tsin-ho Leung , Ian Crayford
IPC分类号： G06F5/06 , H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L29/06 , H04Q3/545 , G06F15/16
CPC分类号： H04L49/901 , G06F5/06 , H04L41/0213 , H04L49/255 , H04L49/30 , H04L49/90 , H04L49/9047 , H04L49/9073 , H04L49/9078 , H04L69/26 , H04Q3/54591 , H04L49/3009 , H04L49/3027 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： A method and arrangement for transmitting multiple copies of a frame from a network switch in a packet switched network stores a single copy of the frame received at the switch into external memory. The frame is stored at a location in memory pointed to by a frame pointer. In queuing multiple transmissions of the stored frame in the switch, the frame pointer, and not the frame itself, is replicated and queued for transmission in the network switch.
摘要翻译：用于从分组交换网络中的网络交换机发送多个帧的副本的方法和装置将在交换机处接收到的帧的单个副本存储到外部存储器中。帧被存储在由帧指针指向的存储器中的位置。在对交换机中存储的帧的多次发送进行排队时，帧指针而不是帧本身被复制并排队等待在网络交换机中传输。

8. 发明授权

US6115387A Method and apparatus for controlling initiation of transmission of data as a function of received data 失效
标题翻译：控制数据发送的接收数据的函数的方法和装置
公开(公告)号：US6115387A
公开(公告)日：2000-09-05
申请号：US992811
申请日：1997-12-18
申请人： Chandan Egbert , Thomas J. Runaldue , Bahadir Erimli
发明人： Chandan Egbert , Thomas J. Runaldue , Bahadir Erimli
IPC分类号： G06F5/06 , G06F12/12 , H04L12/18 , H04L12/24 , H04L12/46 , H04L12/56 , H04L29/06 , H04Q3/545 , H04L12/54
CPC分类号： H04L12/1881 , G06F12/128 , G06F5/06 , H04L12/4641 , H04L41/0213 , H04L49/30 , H04L49/90 , H04L49/901 , H04L49/9047 , H04L49/9078 , H04L69/26 , H04Q3/54591 , H04L12/1863 , H04L12/4645 , H04L12/467 , H04L49/103 , H04L49/205 , H04L49/3009 , H04L49/3027 , H04L49/351 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： A method and arrangement for initiating forwarding of data from a device having multiple receive and transmit ports as a function of the data received at the device includes a plurality of ports for receiving and transmitting data. A port vector FIFO forwards a data identifier to initiate forwarding from at least one of the ports of a received set of data. A holding area is controlled by the port vector FIFO and receives data identifiers and holds these data identifiers until released by the port vector FIFO. The release of a data identifier initiates the forwarding of the data, and each data identifier uniquely identifies each set of data received at the device. The port vector FIFO, upon receiving a data identifier, uses the data identifier to determine the receive port that is receiving the set of data identified by the data identifier. It then determines the mode of that receive port, and releases the data identifier in accordance with the designated mode of that receive port and the data received at that receive port.
摘要翻译：用于从具有多个接收和发送端口的设备开始转发数据作为在设备处接收的数据的函数的方法和装置包括用于接收和发送数据的多个端口。端口向量FIFO转发数据标识符以发起从所接收的一组数据中的至少一个端口的转发。保持区域由端口向量FIFO控制，并接收数据标识符并保存这些数据标识符，直到由端口向量FIFO释放。数据标识符的释放启动数据的转发，并且每个数据标识符唯一地标识在设备处接收到的每组数据。端口向量FIFO在接收到数据标识符后，使用数据标识符来确定接收由数据标识符标识的数据集合的接收端口。然后确定该接收端口的模式，并根据接收端口的指定模式和在该接收端口接收的数据释放数据标识符。

9. 发明授权

US5953335A Method and apparatus for selectively discarding packets for blocked output queues in the network switch 失效
标题翻译：用于选择性地丢弃网络交换机中阻塞的输出队列的分组的方法和装置
公开(公告)号：US5953335A
公开(公告)日：1999-09-14
申请号：US992428
申请日：1997-12-18
申请人： Bahadir Erimli , Thomas J. Runaldue , Chandan Egbert , Denise Kerstein
发明人： Bahadir Erimli , Thomas J. Runaldue , Chandan Egbert , Denise Kerstein
IPC分类号： H04L12/18 , H04L12/24 , H04L12/56 , H04Q3/545 , H04L12/46 , H04L12/26
CPC分类号： H04L49/103 , H04L12/18 , H04L41/0213 , H04L49/201 , H04L49/255 , H04L49/3027 , H04L49/351 , H04Q3/54591 , H04L12/1868 , H04L49/20 , H04L49/30 , H04L49/3009 , H04L49/3054 , H04L49/354 , H04L49/45 , H04Q2213/1316 , H04Q2213/13162
摘要： An apparatus and method of controlling the transmission of copies of a frame of data from a multiport device, such as a multiport network switch, determines which ones of the ports are designated to transmit a copy of a multicopy frame received at the switch. The switch then determines which of these designated ports are not available to transmit a copy of the frame. The copies are transmitted from those designated ports that are available to transmit a copy of the multicopy frame, while the copies are discarded for those designated ports that are not available to transmit a copy of that multicopy frame.
摘要翻译：控制来自多端口设备（例如多端口网络交换机）的数据帧的副本的传输的装置和方法确定哪些端口被指定来传送在交换机处接收的多复制帧的副本。然后，交换机确定哪些指定的端口不可用于发送帧的副本。从可用于发送多拷贝帧的副本的指定端口发送副本，而对于不可用于传送该多拷贝帧的副本的那些指定端口，丢弃副本。

10. 发明授权

US07502366B1 Arrangement in a network switch for prioritizing data frames based on user-defined frame attributes 有权
标题翻译：网络交换机中的布置，用于基于用户定义的帧属性对数据帧进行优先级排序
公开(公告)号：US07502366B1
公开(公告)日：2009-03-10
申请号：US09576021
申请日：2000-05-23
申请人： Bahadir Erimli , Gopal S. Krishna , Chandan Egbert , Peter Ka-Fai Chow , Mrudula Kanuri , Shr-Jie Tzeng , Somnath Viswanath , Xiaohua Zhuang
发明人： Bahadir Erimli , Gopal S. Krishna , Chandan Egbert , Peter Ka-Fai Chow , Mrudula Kanuri , Shr-Jie Tzeng , Somnath Viswanath , Xiaohua Zhuang
IPC分类号： H04L12/28
CPC分类号： H04L47/10 , H04L47/13 , H04L47/20
摘要： A network switch includes network switch ports, each including a port filter configured for detecting user-selected attributes from a received layer 2 type data frame. Each port filter, upon detecting a user-selected attribute in a received layer 2 type data frame, sends a signal to a switching module indicating the determined presence of the user-selected attribute, enabling the switching module to generate a switching decision based on the corresponding user-selected attribute and based on a corresponding user-defined switching policy. The switching policy may specify a priority class, or a guaranteed quality of service (e.g., a guaranteed bandwidth), ensuring that the received layer 2 type data frame receives the appropriate switching support. The user-selected attributes for the port filter and the user-defined switching policy for the switching module are programmed by a host processor. Hence, the integrated network switch is able to perform advanced switching operations for layer 2 type data packets to ensure quality of service requirements, independent of priority information specified in the layer 2 type data packets, based on the user-selected attributes in the layer 2 type data packets and the user-defined switching policies established for the switching module.
摘要翻译：网络交换机包括网络交换机端口，每个端口包括被配置为从接收到的层2型数据帧中检测用户选择的属性的端口过滤器。每个端口滤波器在检测到接收到的层2类型数据帧中的用户选择的属性时，向交换模块发送指示所确定的用户选择属性的存在的信号，使切换模块能够基于相应的用户选择的属性并基于相应的用户定义的交换策略。切换策略可以指定优先级等级或保证服务质量（例如，保证带宽），确保接收到的第2层类型的数据帧接收适当的切换支持。用于端口过滤器的用户选择的属性和用于切换模块的用户定义的切换策略由主处理器编程。因此，综合网络交换机能够根据第2层用户选择的属性，对第2层类型的数据包执行高级交换操作，以确保与第2类数据包中指定的优先级信息无关的服务质量要求类型数据包和为交换模块建立的用户定义的交换策略。

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