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1. 发明授权

US08861400B2 Requesting multicast membership information in a distributed switch in response to a miss event 有权
标题翻译：在分布式交换机中响应未命中事件请求组播成员资格信息
公开(公告)号：US08861400B2
公开(公告)日：2014-10-14
申请号：US13352952
申请日：2012-01-18
申请人： Debra L. Angst , Claude Basso , Josep Cors , Todd A. Greenfield , Natarajan Vaidhyanathan
发明人： Debra L. Angst , Claude Basso , Josep Cors , Todd A. Greenfield , Natarajan Vaidhyanathan
IPC分类号： H04L12/28 , H04L12/18 , H04L12/751 , H04L12/24 , H04L12/721
CPC分类号： H04L12/185 , H04L41/12 , H04L45/02 , H04L45/16 , H04L45/44
摘要： Apparatuses and methods to request multicast membership information in a distributed switch are provided. A particular method may include requesting multicast membership information of a group identified by a multicast destination address in a distributed switch. The distributed switch may include a plurality of distributed switch elements with a plurality of switch forwarding units. The method may generate a miss event indicating that the multicast destination address is unregistered in a switch forwarding unit of a distributed switch element and there is a need for the multicast membership information. The method may also request the multicast membership information of the multicast destination address in response to the miss event. The method may further initiate a query for the multicast membership information of the multicast destination address in response to the request.
摘要翻译：提供了在分布式交换机中请求组播成员资格信息的设备和方法。特定方法可以包括在分布式交换机中请求由组播目的地地址标识的组的组播成员关系信息。分布式交换机可以包括具有多个交换机转发单元的多个分布式交换单元。该方法可以产生指示在分布式交换单元的交换机转发单元中组播目的地地址未注册的未命中事件，并且需要组播成员资格信息。该方法还可以响应于未命中事件来请求组播目的地地址的组播成员关系信息。该方法可以响应于该请求，进一步发起针对组播目的地地址的组播成员关系信息的查询。

2. 发明授权

US08787373B2 Multicast miss notification for a distributed network switch 失效
标题翻译：分布式网络交换机的组播未通知
公开(公告)号：US08787373B2
公开(公告)日：2014-07-22
申请号：US13353737
申请日：2012-01-19
申请人： Josep Cors , Todd A. Greenfield , David A. Shedivy , Bruce M. Walk
发明人： Josep Cors , Todd A. Greenfield , David A. Shedivy , Bruce M. Walk
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L12/1886
摘要： Techniques are provided for multicast miss notification for a distributed network switch. In one embodiment, a bridge element in the distributed network switch receives a frame destined for a multicast group on a network. If a local multicast forwarding table of the bridge element does not include any forwarding entry for the multicast group, a forwarding entry is selected from the local multicast forwarding table as a candidate for being replaced. An indication of the candidate is sent to a management controller in the distributed network switch.
摘要翻译：为分布式网络交换机的组播未通知提供技术。在一个实施例中，分布式网络交换机中的桥接元件接收目的地为网络上的多播组的帧。如果网桥单元的本地组播转发表不包括组播组的任何转发表项，则从本地组播转发表中选择转发表项作为替换的候选项。候选人的指示被发送到分布式网络交换机中的管理控制器。

3. 发明申请

US20130242988A1 DELIVERING MULTICAST FRAMES TO AGGREGATED LINK TRUNKS IN A DISTRIBUTED SWITCH 有权
标题翻译：在分布式交换机中传送多媒体帧
公开(公告)号：US20130242988A1
公开(公告)日：2013-09-19
申请号：US13420259
申请日：2012-03-14
申请人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
发明人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
IPC分类号： H04L12/56
CPC分类号： H04L45/16 , H04L49/201 , H04L49/351 , H04L49/70
摘要： A distributed switch may include a plurality of sub-switches. These sub-switches may be arranged in a hierarchy that increases the available bandwidth for transmitting multicast data frames across the switch fabric. Moreover, the distributed switch may be compatible with link aggregation where multiple physical connections are grouped together to create an aggregated (logical) link. Link aggregation requires similar data frames to use the same data path when traversing the distributed switch. With a unicast data frame, the sub-switch in the distributed switch that receives the data frame typically identifies the destination port (during a process called link selection) and forwards the data frame to the sub-switch containing that port. However, with multicast data frames, instead of the receiving sub-switch performing link selection to determine the destination port, link selection may be done by a different sub-switch or not done at all.
摘要翻译：分布式交换机可以包括多个子交换机。这些子交换机可以以层次结构来布置，从而增加跨越交换结构传输多播数据帧的可用带宽。此外，分布式交换机可以与链路聚合兼容，其中多个物理连接被分组在一起以创建聚合（逻辑）链路。链路聚合需要相似的数据帧才能在穿过分布式交换机时使用相同的数据路径。通过单播数据帧，接收数据帧的分布式交换机中的子交换机通常标识目的端口（在称为链路选择的过程中），并将数据帧转发到包含该端口的子交换机。然而，使用组播数据帧，代替执行链路选择的接收子交换机来确定目的地端口，链路选择可以由不同的子交换机完成，或者根本不完成。

4. 发明申请

US20130242987A1 DYNAMIC OPTIMIZATION OF A MULTICAST TREE HIERARCHY FOR A DISTRIBUTED SWITCH 有权
标题翻译：用于分布式开关的多媒体树分层的动态优化
公开(公告)号：US20130242987A1
公开(公告)日：2013-09-19
申请号：US13420232
申请日：2012-03-14
申请人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
发明人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
IPC分类号： H04L12/56
CPC分类号： H04L12/18 , H04L12/185
摘要： A distributed switch may include a hierarchy with one or more levels of surrogate sub-switches (and surrogate bridge elements) that enable the distributed switch to scale bandwidth based on the size of the membership of a multicast group. Moreover, each surrogate may optimize the hierarchy according to one or more optimization criteria. For example, each surrogate in the hierarchy may have the necessary information to ensure that if the next surrogate in the hierarchy is unavailable, the data may be routed to a backup surrogate. The selected hierarchy may be further optimized by skipping surrogates (or a surrogate level) such that the data intended for a skipped surrogate is sent to a surrogate in a lower-level of the hierarchy. This may better utilize the connection interfaces in the transmitting sub-switches and eliminate any unnecessary surrogate-to-surrogate transfers.
摘要翻译：分布式交换机可以包括具有使得分布式交换机能够基于多播组的成员资格的大小来缩放带宽的代理子交换机（和代理桥元素）的一个或多个级别的层级。此外，每个代理可以根据一个或多个优化标准优化层次。例如，层次结构中的每个代理可以具有必要的信息，以确保如果层次结构中的下一个代理不可用，则数据可以被路由到备用代理。可以通过跳过代理（或替代级别）来进一步优化所选择的层次结构，使得用于跳过的代理的数据被发送到层次结构的较低级别的代理。这可以更好地利用发送子交换机中的连接接口，并消除任何不必要的替代代理转移。

5. 发明申请

US20130242986A1 MULTICAST TRAFFIC GENERATION USING HIERARCHICAL REPLICATION MECHANISMS FOR DISTRIBUTED SWITCHES 有权
标题翻译：使用分布式交换机的分层机制的多媒体业务生成
公开(公告)号：US20130242986A1
公开(公告)日：2013-09-19
申请号：US13420203
申请日：2012-03-14
申请人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
发明人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
IPC分类号： H04L12/56
CPC分类号： H04L45/16 , H04L49/201 , H04L49/351 , H04L49/70
摘要： A distributed switch may include a hierarchy with one or more levels of surrogate sub-switches (and surrogate bridge elements) that enable the distributed switch to scale bandwidth based on the size of the membership of a multicast group. When a sub-switch receives a multicast data frame, it forwards the packet to one of the surrogate sub-switches. Each surrogate sub-switch may then forward the packet to another surrogate in a different hierarchical level or to a destination computing device. Because the surrogates may transmit the data frame in parallel using two or more connection interfaces, the bandwidth used to forward the multicast packet increases for each surrogate used.
摘要翻译：分布式交换机可以包括具有使得分布式交换机能够基于多播组的成员资格的大小来缩放带宽的代理子交换机（和代理桥元素）的一个或多个级别的层级。当子交换机接收到组播数据帧时，它将数据包转发到其中一个代理子交换机。然后，每个代理子交换机可以将分组转发到不同层级的另一个代理或转发到目的地计算设备。由于代理可以使用两个或多个连接接口并行传输数据帧，所以用于转发组播数据包的带宽随着使用的每个代理而增加。

6. 发明申请

US20130182706A1 REQUESTING MULTICAST MEMBERSHIP INFORMATION IN A DISTRIBUTED SWITCH IN RESPONSE TO A MISS EVENT 有权
标题翻译：要求分配的交换机中的多播会议信息响应失败事件
公开(公告)号：US20130182706A1
公开(公告)日：2013-07-18
申请号：US13352952
申请日：2012-01-18
申请人： Debra L. Angst , Claude Basso , Josep Cors , Todd A. Greenfield , Natarajan Vaidhyanathan
发明人： Debra L. Angst , Claude Basso , Josep Cors , Todd A. Greenfield , Natarajan Vaidhyanathan
IPC分类号： H04L12/56
CPC分类号： H04L12/185 , H04L41/12 , H04L45/02 , H04L45/16 , H04L45/44
摘要： Apparatuses and methods to request multicast membership information in a distributed switch are provided. A particular method may include requesting multicast membership information of a group identified by a multicast destination address in a distributed switch. The distributed switch may include a plurality of distributed switch elements with a plurality of switch forwarding units. The method may generate a miss event indicating that the multicast destination address is unregistered in a switch forwarding unit of a distributed switch element and there is a need for the multicast membership information. The method may also request the multicast membership information of the multicast destination address in response to the miss event. The method may further initiate a query for the multicast membership information of the multicast destination address in response to the request.
摘要翻译：提供了在分布式交换机中请求组播成员资格信息的设备和方法。特定方法可以包括在分布式交换机中请求由组播目的地地址标识的组的组播成员关系信息。分布式交换机可以包括具有多个交换机转发单元的多个分布式交换单元。该方法可以产生指示在分布式交换单元的交换机转发单元中组播目的地地址未注册的未命中事件，并且需要组播成员资格信息。该方法还可以响应于未命中事件来请求组播目的地地址的组播成员关系信息。该方法可以响应于该请求，进一步发起针对组播目的地地址的组播成员关系信息的查询。

7. 发明授权

US07454543B2 Early high speed serializer-deserializer (HSS)internal receive (Rx) interface for data sampling clock signals on parallel bus 有权
标题翻译：早期高速串行器 - 解串器（HSS）内部接收（Rx）接口，用于并行总线上的数据采样时钟信号
公开(公告)号：US07454543B2
公开(公告)日：2008-11-18
申请号：US11380240
申请日：2006-04-26
申请人： Wayne M. Barrett , Todd A. Greenfield
发明人： Wayne M. Barrett , Todd A. Greenfield
IPC分类号： G06F17/50 , G06F13/38
CPC分类号： G06F13/385 , H03K5/135 , H03M9/00
摘要： In a method for reading data from a serial data source in a parallel format, data from the serial data source is deserialized by placing a plurality of predefined units of data onto a parallel bus and asserting a deserialization clock when each of the plurality of predefined units is valid on the parallel bus. A delayed clock pulse is generated a predetermined amount of time after each assertion of the deserialization clock. Each delayed pulse is repeated so as to generate an end point repeated clock pulse corresponding to each delayed pulse wherein the predetermined amount of time is an amount of time that ensures that each predefined unit of data on the parallel bus is valid when each end point repeated clock pulse is asserted.
摘要翻译：在用于以并行格式从串行数据源读取数据的方法中，来自串行数据源的数据通过将多个预定义的数据单元放置在并行总线上而反序列化，并且当多个预定义单元中的每一个单元在并行总线上有效。延迟时钟脉冲在每次断言反序列化时钟之后产生预定的时间量。重复每个延迟脉冲，以便产生对应于每个延迟脉冲的终点重复时钟脉冲，其中预定量的时间是确保每个终点重复时并行总线上的每个预定义的数据单元有效的时间量时钟脉冲被断言。

8. 发明授权

US08811406B2 Delivering multicast frames to aggregated link trunks in a distributed switch 有权
公开(公告)号：US08811406B2
公开(公告)日：2014-08-19
申请号：US13420259
申请日：2012-03-14
申请人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
发明人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
IPC分类号： H04L12/28 , H04L12/54 , H04J3/14 , H04W72/00
CPC分类号： H04L45/16 , H04L49/201 , H04L49/351 , H04L49/70
摘要： A distributed switch may include a plurality of sub-switches. These sub-switches may be arranged in a hierarchy that increases the available bandwidth for transmitting multicast data frames across the switch fabric. Moreover, the distributed switch may be compatible with link aggregation where multiple physical connections are grouped together to create an aggregated (logical) link. Link aggregation requires similar data frames to use the same data path when traversing the distributed switch. With a unicast data frame, the sub-switch in the distributed switch that receives the data frame typically identifies the destination port (during a process called link selection) and forwards the data frame to the sub-switch containing that port. However, with multicast data frames, instead of the receiving sub-switch performing link selection to determine the destination port, link selection may be done by a different sub-switch or not done at all.

9. 发明申请

US20080247496A1 Early HSS Rx Data Sampling 审中-公开
标题翻译：早期HSS Rx数据采样
公开(公告)号：US20080247496A1
公开(公告)日：2008-10-09
申请号：US12141183
申请日：2008-06-18
申请人： Wayne M. Barrett , Todd A. Greenfield
发明人： Wayne M. Barrett , Todd A. Greenfield
IPC分类号： H04L7/00
CPC分类号： G06F13/385 , H03K5/135 , H03M9/00
摘要： In a method for reading data from a serial data source in a parallel format, data from the serial data source is deserialized by placing a plurality of predefined units of data onto a parallel bus and asserting a deserialization clock when each of the plurality of predefined units is valid on the parallel bus. A delayed clock pulse is generated a predetermined amount of time after each assertion of the deserialization clock. Each delayed pulse is repeated so as to generate an end point repeated clock pulse corresponding to each delayed pulse wherein the predetermined amount of time is an amount of time that ensures that each predefined unit of data on the parallel bus is valid when each end point repeated clock pulse is asserted.
摘要翻译：在用于以并行格式从串行数据源读取数据的方法中，来自串行数据源的数据通过将多个预定义的数据单元放置在并行总线上而反序列化，并且当多个预定义单元中的每一个单元在并行总线上有效。延迟时钟脉冲在每次断言反序列化时钟之后产生预定的时间量。重复每个延迟脉冲，以便产生对应于每个延迟脉冲的终点重复时钟脉冲，其中预定量的时间是确保每个终点重复时并行总线上的每个预定义的数据单元有效的时间量时钟脉冲被断言。

10. 发明授权

US08913620B2 Multicast traffic generation using hierarchical replication mechanisms for distributed switches 有权
标题翻译：使用分布式交换机的分层复制机制的组播流量生成
公开(公告)号：US08913620B2
公开(公告)日：2014-12-16
申请号：US13420203
申请日：2012-03-14
申请人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
发明人： Claude Basso , Todd A. Greenfield , Bruce M. Walk
IPC分类号： H04L12/28 , H04L1/00 , H04L12/66 , H04H20/71 , H04J3/16 , H04J3/24 , H04J3/26 , G06F15/173 , H04W72/00
CPC分类号： H04L45/16 , H04L49/201 , H04L49/351 , H04L49/70
摘要： A distributed switch may include a hierarchy with one or more levels of surrogate sub-switches (and surrogate bridge elements) that enable the distributed switch to scale bandwidth based on the size of the membership of a multicast group. When a sub-switch receives a multicast data frame, it forwards the packet to one of the surrogate sub-switches. Each surrogate sub-switch may then forward the packet to another surrogate in a different hierarchical level or to a destination computing device. Because the surrogates may transmit the data frame in parallel using two or more connection interfaces, the bandwidth used to forward the multicast packet increases for each surrogate used.
摘要翻译：分布式交换机可以包括具有使得分布式交换机能够基于多播组的成员资格的大小来缩放带宽的代理子交换机（和代理桥元素）的一个或多个级别的层级。当子交换机接收到组播数据帧时，它将数据包转发到其中一个代理子交换机。然后，每个代理子交换机可以将分组转发到不同层级的另一个代理或转发到目的地计算设备。由于代理可以使用两个或多个连接接口并行传输数据帧，所以用于转发组播数据包的带宽随着使用的每个代理而增加。

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