公开(公告)号：US20080212579A1

公开(公告)日：2008-09-04

申请号：US11712706

申请日：2007-03-01

申请人： Bruce E. LaVigne ,  Mark Gooch ,  Alan R. Albrecht ,  Mauricio Sanchez ,  Steven G. Jorgensen

发明人： Bruce E. LaVigne ,  Mark Gooch ,  Alan R. Albrecht ,  Mauricio Sanchez ,  Steven G. Jorgensen

IPC分类号： H04L12/56

CPC分类号： H04L12/66 ,  H04L12/4633

摘要： Network devices, systems, and methods are provided for packet processing. One network device includes a network chip having a number of network ports for the device. The network chip includes logic to select original data packets, based on a set of criteria, received from or destined to a particular port on the device and to tunnel the selected data packets to a second network device having a different destination address to that of the selected data packets.

摘要翻译： 提供网络设备，系统和方法用于数据包处理。 一个网络设备包括具有用于设备的多个网络端口的网络芯片。 网络芯片包括基于从或从设备上的特定端口接收或去往设备的特定端口的一组标准来选择原始数据分组的逻辑，并且将所选择的数据分组隧道到具有不同目的地地址的第二网络设备 选择的数据包。

公开(公告)号：US07103045B2

公开(公告)日：2006-09-05

申请号：US10091691

申请日：2002-03-05

申请人： Bruce E. Lavigne ,  Lewis S. Kootstra ,  Mark Gooch

发明人： Bruce E. Lavigne ,  Lewis S. Kootstra ,  Mark Gooch

IPC分类号： H04L12/56 ,  G06F9/34 ,  G06F12/02 ,  G06F12/10

CPC分类号： H04L49/354 ,  H04L49/201

摘要： A system for forwarding packets. The system has a first node for creating requests that contain a number of filters for specifying packet forwarding criteria. The first node also specifies values for the filters based on a packet to be forwarded. The system also has a second node coupled to the first node and to a number of ports. The second node has at least one table for specifying which of the ports are to receive the packet based on the filter values. The second node determines which of the ports are to receive the packet based on the table information and the filter values.

公开(公告)号：US07760530B2

公开(公告)日：2010-07-20

申请号：US11810072

申请日：2007-06-04

申请人： Vincent E. Cavanna ,  Mark Gooch ,  John A. Wickeraad

发明人： Vincent E. Cavanna ,  Mark Gooch ,  John A. Wickeraad

IPC分类号： G11C15/00

CPC分类号： G11C15/00 ,  G06F7/74

摘要： Systems, devices, and methods, including executable instructions are provided for resolving content addressable memory (CAM) match address priority. One method includes retaining a first match address as the best match address. Subsequent match addresses are compared to the retained best match address, each match address being associated with a compare cycle during which a selected columnar portion of each CAM entry is compared to a corresponding portion of a search term. The best match address is updated as a result of the comparison.

摘要翻译： 提供系统，设备和方法，包括可执行指令，用于解析内容可寻址存储器（CAM）匹配地址优先级。 一种方法包括保留第一匹配地址作为最佳匹配地址。 将后续匹配地址与保留的最佳匹配地址进行比较，每个匹配地址与比较周期相关联，在该比较周期期间，将每个CAM条目的选定柱状部分与搜索项的相应部分进行比较。 作为比较的结果，最佳匹配地址被更新。

公开(公告)号：US07126948B2

公开(公告)日：2006-10-24

申请号：US10104888

申请日：2002-03-21

申请人： Mark Gooch ,  Aled Edwards

发明人： Mark Gooch ,  Aled Edwards

IPC分类号： H04L12/56

CPC分类号： H04L12/56 ,  H04L45/745

摘要： A method for performing a hash transformation in a network device to generate a hash pointer for an address input by using rotation. The method includes to step of receiving an address input. Rotated copies of the address input are subsequently logically combined in accordance with a key to generate a hashing result corresponding to the address input. The hash result is subsequently output.

公开(公告)号：US08879563B2

公开(公告)日：2014-11-04

申请号：US13370357

申请日：2012-02-10

申请人： Shaun Wakumoto ,  Mark Gooch

发明人： Shaun Wakumoto ,  Mark Gooch

IPC分类号： H04L12/28 ,  H04L12/725 ,  H04L12/947 ,  H04L12/743

CPC分类号： H04L45/306 ,  H04L45/38 ,  H04L45/7453 ,  H04L49/25

摘要： A method includes reading content of network traffic that arrives at a network port of a network switch of a mesh of network switches. A hash algorithm is applied to the read content to indicate a path to a destination network switch of the mesh, the hash algorithm being common to all network switches of the mesh. The network traffic is forwarded via a network port that is associated with the indicated path.

摘要翻译： 一种方法包括读取到达网络交换机网格的网络交换机的网络端口的网络流量的内容。 散列算法应用于读取的内容以指示到网格的目的地网络交换机的路径，该散列算法对于网格的所有网络交换机是共同的。 通过与所指示的路径相关联的网络端口转发网络流量。

公开(公告)号：US08054833B2

公开(公告)日：2011-11-08

申请号：US11810368

申请日：2007-06-05

申请人： Steven G. Jorgensen ,  Mark Gooch

发明人： Steven G. Jorgensen ,  Mark Gooch

IPC分类号： H04L12/28

CPC分类号： H04L12/4641

摘要： Network devices, systems, and methods are provided for packet processing. One network device includes a network chip including logic and a number of network ports for the device for receiving and transmitting packets therefrom. The logic is operable to mirror packets on a per port per virtual local area network (VLAN) membership basis.

摘要翻译： 提供网络设备，系统和方法用于数据包处理。 一个网络设备包括网络芯片，其包括用于从其接收和发送分组的设备的逻辑和多个网络端口。 该逻辑可用于在每个虚拟局域网（VLAN）成员资格的每个端口上镜像数据包。

公开(公告)号：US07852653B2

公开(公告)日：2010-12-14

申请号：US11810124

申请日：2007-06-04

申请人： John A. Wickeraad ,  Mark Gooch

发明人： John A. Wickeraad ,  Mark Gooch

IPC分类号： G11C15/00

CPC分类号： G11C15/00 ,  G06F7/74

摘要： Systems, devices, and methods, including executable instructions are provided for content addressable memory (CAM). One method includes defining the CAM into an array of data words having M rows and N columns, with each of N and M being greater than one. The data words of the CAM are arranged according to a 2-dimensional priority scheme. Data words outside a selected 1×M column are masked to be ignored in determining a match, and the CAM is searched. Each search includes N compare cycles and each compare cycle having a different 1×M column selected. A highest priority match per compare cycle is pipelined from a priority encoder with the pipelined matches arranged to communicate a priority order in a first dimension of the 2-dimensional priority scheme.

摘要翻译： 为内容可寻址存储器（CAM）提供系统，设备和方法，包括可执行指令。 一种方法包括将CAM定义为具有M行和N列的数据字阵列，其中N和M中的每一个大于1。 CAM的数据字根据二维优先级方案进行排列。 选定的1×M列之外的数据字在确定匹配时被屏蔽以被忽略，并且搜索CAM。 每个搜索包括N个比较周期，并且每个比较周期选择不同的1×M列。 每个比较周期的最高优先级匹配从优先编码器流水线化，其中流水线匹配被布置为在二维优先级方案的第一维度中传送优先级顺序。

公开(公告)号：US07757152B2

公开(公告)日：2010-07-13

申请号：US11207357

申请日：2005-08-18

申请人： John Wickeraad ,  Mark Gooch ,  Alan Albrecht

发明人： John Wickeraad ,  Mark Gooch ,  Alan Albrecht

IPC分类号： G11C29/00

CPC分类号： G11C15/00 ,  G06F11/106 ,  G06F11/1064 ,  G11C29/42 ,  G11C29/52 ,  G11C2029/0409

摘要： A method for remedying data corruption in a first circuit, which may be a CAM or a TCAM. The method includes providing a RAM circuit external to the first circuit, the RAM circuit being configured for storing error detection information for data stored in the first circuit. The method also includes scrubbing the data stored in the first circuit during scrubbing cycles of the first circuit. The scrubbing corrects stored bit patterns read from the first circuit that fail an error detection test using error detection information corresponding to individual ones of the stored bit patterns. In an embodiment, ECC may be employed for the error detection test and also to correct any single bit error found.

摘要翻译： 一种用于补救第一电路中可能是CAM或TCAM的数据损坏的方法。 该方法包括提供第一电路外部的RAM电路，RAM电路被配置为存储用于存储在第一电路中的数据的错误检测信息。 该方法还包括在第一电路的擦洗循环期间擦洗存储在第一电路中的数据。 擦除使用与存储的位模式中的各个相对应的错误检测信息来校正从第一电路读取的存在的错误检测测试失败的位模式。 在一个实施例中，ECC可以用于错误检测测试，并且还可以校正发现的任何单个位错误。

公开(公告)号：US20070061668A1

公开(公告)日：2007-03-15

申请号：US11207357

申请日：2005-08-18

申请人： John Wickeraad ,  Mark Gooch ,  Alan Albrecht

发明人： John Wickeraad ,  Mark Gooch ,  Alan Albrecht

IPC分类号： H03M13/00

CPC分类号： G11C15/00 ,  G06F11/106 ,  G06F11/1064 ,  G11C29/42 ,  G11C29/52 ,  G11C2029/0409

摘要： A method for remedying data corruption in a first circuit, which may be a CAM or a TCAM. The method includes providing a RAM circuit external to the first circuit, the RAM circuit being configured for storing error detection information for data stored in the first circuit. The method also includes scrubbing the data stored in the first circuit during scrubbing cycles of the first circuit. The scrubbing corrects stored bit patterns read from the first circuit that fail an error detection test using error detection information corresponding to individual ones of the stored bit patterns. In an embodiment, ECC may be employed for the error detection test and also to correct any single bit error found.

摘要翻译： 一种用于补救第一电路中可能是CAM或TCAM的数据损坏的方法。 该方法包括提供第一电路外部的RAM电路，RAM电路被配置为存储用于存储在第一电路中的数据的错误检测信息。 该方法还包括在第一电路的擦洗循环期间擦洗存储在第一电路中的数据。 擦除使用与存储的位模式中的各个相对应的错误检测信息来校正从第一电路读取的存在的错误检测测试失败的位模式。 在一个实施例中，ECC可以用于错误检测测试，并且还可以校正发现的任何单个位错误。

公开(公告)号：US20050220092A1

公开(公告)日：2005-10-06

申请号：US10813766

申请日：2004-03-31

申请人： Bruce LaVigne ,  Paul Congdon ,  Mark Gooch

发明人： Bruce LaVigne ,  Paul Congdon ,  Mark Gooch

IPC分类号： H04L12/24 ,  H04L12/28 ,  H04L29/06

CPC分类号： H04L63/101 ,  H04L43/028 ,  H04L45/742 ,  H04L45/7453

摘要： One embodiment disclosed relates to a method for mirroring of select network traffic. A data packet is received by a network device. A determination is made as to whether a designated aspect of the packet matches a flagged entry in a look-up table on the network device. If a match is found, then copy of the packet is sent to an associated mirror destination. Another embodiment disclosed relates to a networking apparatus. The apparatus includes at least an operating system, a look-up table, and a mirroring engine. The operating system includes routines utilized to control the apparatus, and the look-up table includes selection information for mirror sources. The mirroring engine forwards copies of selected packets to a corresponding mirror destination. Another embodiment disclosed relates to a method of selecting packets to mirror that includes checking state information relating to the network traffic against dynamic mirroring criteria.

摘要翻译： 公开的一个实施例涉及一种用于对选择网络业务进行镜像的方法。 数据包由网络设备接收。 确定分组的指定方面是否与网络设备上的查找表中的标记条目匹配。 如果发现匹配，则将数据包的副本发送到关联的镜像目的地。 公开的另一实施例涉及网络装置。 该装置至少包括操作系统，查找表和镜像引擎。 操作系统包括用于控制设备的例程，查找表包括用于镜像源的选择信息。 镜像引擎将所选数据包的副本转发到相应的镜像目的地。 所公开的另一实施例涉及一种选择要镜像的分组的方法，包括根据动态镜像标准检查与网络流量有关的状态信息。