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1. 发明授权

US06959002B2 Traffic manager for network switch port 有权
标题翻译：网络交换机端口的流量管理器
公开(公告)号：US06959002B2
公开(公告)日：2005-10-25
申请号：US09908614
申请日：2001-07-18
申请人： John M. Wynne , David L. Dooley , Robert J. Divivier
发明人： John M. Wynne , David L. Dooley , Robert J. Divivier
IPC分类号： H04L12/56 , H04Q11/04 , H04L12/28 , H04L12/54
CPC分类号： H04L49/3081 , H04L49/255 , H04L2012/5631 , H04L2012/5679 , H04L2012/5681 , H04Q11/0478
摘要： A traffic manager for a network switch input or output port stores incoming cells in a cell memory and later sends each cell out of its cell memory toward one of a set of forwarding resources such as, for example, another switch port or an output bus. Data in each cell references the particular forwarding resource to receive the cell. Each cell is assigned to one of several flow queues such that all cells assigned to the same flow queue are to be sent to the same forwarding resource. The traffic manager maintains a separate virtual output queue (VOQ) associated with each forwarding resource and periodically loads a flow queue (FQ) number identifying each flow queue into the VOQ associated with the forwarding resource that is to receive the cells assigned to that FQ. The traffic manager also periodically shifts an FQ ID out of each non-empty VOQ and forwards the longest-stored cell assigned to that FQ from the cell memory toward its intended forwarding resource. The traffic manager separately determines the rates at which it loads FQ IDs into VOQs and the rates at which it shifts FQ IDs out of each non-empty VOQ. Thus the traffic manager is able to separately control the rate at which cells of each flow queue are forwarded and the rate at which each forwarding resource receives cells.
摘要翻译：用于网络交换机输入或输出端口的流量管理器将进入的单元存储在单元存储器中，并且随后将每个单元从其单元存储器发送到一组转发资源中的一个，例如另一个开关端口或输出总线。每个单元中的数据引用特定的转发资源来接收单元。每个小区被分配给几个流队列中的一个，使得分配给相同流队列的所有小区将被发送到相同的转发资源。流量管理器维护与每个转发资源相关联的单独的虚拟输出队列（VOQ），并且周期性地将识别每个流队列的流队列（FQ）加载到与要接收分配给该FQ的小区的转发资源相关联的VOQ中。流量管理器还周期地从每个非空VOQ移出FQ ID，并将分配给该FQ的最长存储单元从单元存储器转发到其预期的转发资源。流量管理器单独确定将FQ ID加载到VOQ中的速率以及从每个非空VOQ中移除FQ ID的速率。因此，流量管理器能够分别控制每个流队列的小区被转发的速率以及每个转发资源接收小区的速率。

2. 发明授权

US07058057B2 Network switch port traffic manager having configurable packet and cell servicing 有权
公开(公告)号：US07058057B2
公开(公告)日：2006-06-06
申请号：US09847077
申请日：2001-05-01
申请人： David L. Dooley , Robert J. Divivier
发明人： David L. Dooley , Robert J. Divivier
IPC分类号： H04L12/28
CPC分类号： H04L47/10 , H04L12/5601 , H04L47/22 , H04L47/50 , H04L47/522 , H04L49/255 , H04L49/3081 , H04L2012/5651 , H04L2012/5652 , H04L2012/5679 , H04L2012/5681 , H04Q11/0478
摘要： An input or output switch port for a network switch converts each incoming packet into a cell sequence stores each cell in a cell memory. The switch port includes a traffic manager for queuing cells for departure from the cell memory and then signaling the cell memory to read out and forward cells in the order they are queued. The traffic manager selectively queues cells for departure on either a cell-by-cell or sequence-by-sequence basis. When cells are queued for departure on a cell-by-cell basis, cells of two or more sequences may be alternately read out and forwarded from the cell memory. Thus cells of different sequences may be interleaved with one another as they depart the cell memory. When a cell sequence is queued on a sequence-by-sequence basis all of its cells are read out of the cell memory and forwarded as a contiguous sequence and are not interleaved with cells of other sequences of the same departure queue. Each packet includes a flow identification number (FIN) value and the traffic manager determines from the packet's FIN whether to queue cell sequences derived from the packet on a cell-by-cell or sequence-by-sequence basis.

3. 发明申请

US20080140891A1 Common Access Ring System 有权
标题翻译：公共接入环系统
公开(公告)号：US20080140891A1
公开(公告)日：2008-06-12
申请号：US11608236
申请日：2006-12-07
申请人： Lambert Fong , David L. Dooley
发明人： Lambert Fong , David L. Dooley
IPC分类号： G06F13/40
CPC分类号： G06F13/368
摘要： A common access ring (CAR) architecture that supports multiple masters and slaves is provided. One or more masters may make a request on the ring at the same time, such that multiple transactions are simultaneously pending. Moreover, multiple masters may simultaneously make a request to the same slave. However, each master cannot make more than one request at a time, and must wait until a current request is completed before making another request. The ring architecture ensures that no more than one request arrives at a slave at any given time. If a request arrives while a slave is processing a previous request, the arriving request is not serviced, and the master that originated the arriving request is asked to retry the request at a later time. Atomic shadow-write operations are supported by including all shadow registers in a dedicated sub-ring of the CAR architecture.
摘要翻译：提供了支持多个主机和从机的通用接入环（CAR）架构。一个或多个主人可以同时在环上发出请求，使得多个事务同时处于待决状态。此外，多个主机可以同时向同一个从机发出请求。但是，每个主机不能一次发出多个请求，并且必须等到当前请求完成才能发出另一个请求。环形架构确保在任何给定时间不超过一个请求到达从站。如果在从机正在处理先前的请求中请求到达，则不服务到达的请求，并且要求发起到达的请求的主机稍后重试该请求。通过将所有影子寄存器包含在CAR架构的专用子环中来支持原子影子写入操作。

4. 发明授权

US07814248B2 Common access ring/sub-ring system 有权
标题翻译：公共接入环/子环系统
公开(公告)号：US07814248B2
公开(公告)日：2010-10-12
申请号：US11608239
申请日：2006-12-07
申请人： Lambert Fong , David L. Dooley
发明人： Lambert Fong , David L. Dooley
IPC分类号： G06F13/00 , G06F13/36 , G06F15/16
CPC分类号： H04L12/4637 , H04L12/423
摘要： A common access ring (CAR) network includes a main ring and one or more sub-rings. The main ring includes one or more masters, one or more slaves, and one or more bridges. Each sub-ring is coupled to the main ring through a corresponding bridge. Each node of the CAR network is assigned a unique identifier, thereby implementing a global flat address space. One or more masters may issue requests on the CAR network, such that multiple transactions are simultaneously pending. Multiple masters may simultaneously issue requests to the same slave. However, each master cannot make more than one request at a time, and must wait until a current request is completed before making another request. The ring architecture ensures that no more than one request arrives at a slave at any given time. Requests received by busy slaves are returned to the originating masters, and may be subsequently re-sent.
摘要翻译：公共接入环（CAR）网络包括主环和一个或多个子环。主环包括一个或多个主站，一个或多个从站和一个或多个桥。每个子环通过相应的桥耦合到主环。为CAR网络的每个节点分配唯一的标识符，从而实现全局平面地址空间。一个或多个主人可以在CAR网络上发出请求，使得多个事务同时处于待决状态。多个主器件可以同时向同一个从器件发出请求。但是，每个主机不能一次发出多个请求，并且必须等到当前请求完成才能发出另一个请求。环形架构确保在任何给定时间不超过一个请求到达从站。繁忙奴隶所收到的请求将返回给始发主人，随后可以重新发送。

5. 发明授权

US07203170B2 Network switch port with weighted random early discard 有权
标题翻译：具有加权随机早期丢弃的网络交换机端口
公开(公告)号：US07203170B2
公开(公告)日：2007-04-10
申请号：US09847076
申请日：2001-05-01
申请人： David L. Dooley
发明人： David L. Dooley
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L47/10 , H04L12/5601 , H04L47/2441 , H04L47/32 , H04L47/50 , H04L47/621 , H04L47/6255 , H04L49/3081 , H04L49/351 , H04L49/90 , H04L49/9078 , H04L2012/5647 , H04L2012/5679 , H04L2012/5681 , H04L2012/5682
摘要： A network switch port receives, stores and then forwards incoming cells. The network switch assigns each incoming cell to one of a set of flow queues, each of which is allotted a portion of space in a cell memory. The switch port periodically computes a average of the number of cells assigned to each flow queue stored in the cell memory during a preceding period, and assigns a discard weight to each incoming cell that is a function of the amount by which the average for the cell's assigned flow queue exceeds a threshold level. The switch port randomly discards incoming cells assigned to the flow queue with a probability that increases with the incoming cells' assigned weights. The switch port stores incoming cells that are not randomly discarded in the cell memory and later forewords them from the cell memory.
摘要翻译：网络交换机端口接收，存储并转发传入的小区。网络交换机将每个进入的小区分配给一组流队列中的一个，每个流队列分配在一个单元存储器中的一部分空间。交换端口周期性地计算在前一周期中分配给存储在小区存储器中的每个流队列的小区的数目的平均值，并且将每个进入小区的丢弃权重分配给每个小区的平均值，分配的流队列超过阈值级别。交换机端口随着丢弃分配给流队列的进入小区随着传入小区的分配权重而增加的概率随机丢弃。交换机端口存储在单元存储器中不被随机丢弃的进入单元，并且稍后从单元存储器中提取它们。

6. 发明授权

US07809871B2 Common access ring system 有权
标题翻译：通用接入环系统
公开(公告)号：US07809871B2
公开(公告)日：2010-10-05
申请号：US11608236
申请日：2006-12-07
申请人： Lambert Fong , David L. Dooley
发明人： Lambert Fong , David L. Dooley
IPC分类号： G06F13/00 , G06F13/36 , G06F15/16
CPC分类号： G06F13/368
摘要： A common access ring (CAR) architecture that supports multiple masters and slaves is provided. One or more masters may make a request on the ring at the same time, such that multiple transactions are simultaneously pending. Moreover, multiple masters may simultaneously make a request to the same slave. However, each master cannot make more than one request at a time, and must wait until a current request is completed before making another request. The ring architecture ensures that no more than one request arrives at a slave at any given time. If a request arrives while a slave is processing a previous request, the arriving request is not serviced, and the master that originated the arriving request is asked to retry the request at a later time. Atomic shadow-write operations are supported by including all shadow registers in a dedicated sub-ring of the CAR architecture.
摘要翻译：提供了支持多个主机和从机的通用接入环（CAR）架构。一个或多个主人可以同时在环上发出请求，使得多个事务同时处于待决状态。此外，多个主机可以同时向同一个从机发出请求。但是，每个主机不能一次发出多个请求，并且必须等到当前请求完成才能发出另一个请求。环形架构确保在任何给定时间不超过一个请求到达从站。如果在从机正在处理先前的请求时请求到达，则不会对到达的请求进行服务，并且要求发起到达请求的主机稍后重试该请求。通过将所有影子寄存器包含在CAR架构的专用子环中来支持原子影子写入操作。

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