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1. 发明授权

US06519264B1 Rate monitoring of connections in a communications network using history buffer 有权
公开(公告)号：US06519264B1
公开(公告)日：2003-02-11
申请号：US09298788
申请日：1999-04-26
申请人： David W. Carr , Jason T. Sterne , Denny L. S. Lee
发明人： David W. Carr , Jason T. Sterne , Denny L. S. Lee
IPC分类号： H04L12423
CPC分类号： H04L12/5601 , H04L41/5003 , H04L43/024 , H04L43/0882 , H04L43/0894
摘要： There is provided a method and device for measuring a rate of message element traffic over a message path in a communications network. The path includes at least one connection and is associated with a maximum rate of transmission. The path is periodically polled for transmission of a message element, the polling being performed at a polling rate associated with polling intervals which are at least as frequent as the maximum rate of transmission. If transmission of a message element is detected during a polling interval, a running count of such detection is incremented, the running count of detection being associated with the connection over which the message element was detected. If transmission of a message element is not detected, a running count of such non-detection is incremented, the running count of non-detection being associated with inactivity of the message path. During each polling interval, an oldest stored value is retrieved from a memory which includes a preselected number of stored values that correspond to an equal number of most recent sequential events of detection and non-detection. Each stored value which represents an event of detection corresponds to an identifier denoting the connection over which the message element was detected. Each stored value which represents an event of non-detection corresponds to an identifier denoting inactivity of the message path. Following retrieval during each polling interval, the running count of detection associated with the connection corresponding to the identifier of the retrieved value is decremented if the retrieved value represents an event of detection. The running count of non-detection is decremented if the retrieved value represents inactivity. The retrieved value is thereafter replaced with a value corresponding to an identifier which denotes the connection over which the message element was detected if transmission was detected. Otherwise the retrieved value is replaced in the memory with a value corresponding to an identifier which denotes inactivity if transmission was not detected. The foregoing steps are repeated for so long as the measurement is undertaken. The rate of message element traffic over a connection of the message path is proportional to the running count of detection associated with the connection.

2. 发明授权

US06587437B1 ER information acceleration in ABR traffic 失效
标题翻译： ABR流量中的ER信息加速
公开(公告)号：US06587437B1
公开(公告)日：2003-07-01
申请号：US09321192
申请日：1999-05-27
申请人： Denny L. S. Lee , Jason T. Sterne
发明人： Denny L. S. Lee , Jason T. Sterne
IPC分类号： H04L1228
CPC分类号： H04L47/10 , H04L47/263 , H04L2012/5635 , H04L2012/5636 , Y02D50/10
摘要： A method and network element for feedback control for adjusting a rate of message transmission over a connection in a network is provided. The connection comprises a source and destination linked by forward and backward message paths. The source has instructions for setting a message transmission rate for the connection provided by feedback messages received, each containing an explicit rate of transmission. The method comprises steps: receiving feedback messages from the backward path; extracting an explicit rate being carried by each feedback message received; storing each feedback message received in a queue; retrieving a stored feedback message and, substantially when it is transmitted, marking it with an explicit rate determined from an extracted explicit rate pertaining to another message received more recently and a rate determined from a state of congestion of the network element; and externally transmitting the feedback message over the backward message path once so marked.
摘要翻译：提供了一种用于通过网络中的连接调整消息传输速率的反馈控制的方法和网络元件。连接包括通过前向和后向消息路径链接的源和目的地。源具有用于设置由接收的反馈消息提供的连接的消息传输速率的指令，每个包含明确的传输速率。该方法包括步骤：从后向路径接收反馈消息; 提取所接收的每个反馈消息携带的显式速率; 存储在队列中接收的每个反馈消息; 检索存储的反馈消息，并且基本上在发送时，以从与最近接收到的另一消息相关联的提取的显式速率确定的显式速率进行标记，以及从网元的拥塞状态确定的速率; 并通过一次这样标记的反向消息路径外部发送反馈消息。

3. 发明授权

US06226262B1 Correction of calendar based ATM cell scheduling for downstream cell insertion 失效
标题翻译：基于日历的ATM信元调度修正下游单元插入
公开(公告)号：US06226262B1
公开(公告)日：2001-05-01
申请号：US08878959
申请日：1997-06-19
申请人： Jason T. Sterne , Denny L. S. Lee , Stanko Vuleta
发明人： Jason T. Sterne , Denny L. S. Lee , Stanko Vuleta
IPC分类号： H04L1226
CPC分类号： H04L12/5602 , H04L2012/5638 , H04L2012/5679 , H04Q11/0478
摘要： A calendar based ATM cell scheduling device is used to maintain accurate shaping of cell streams in order to satisfy traffic management guarantees. In certain applications cell insertion may occur downstream of the scheduling device, potentially violating traffic descriptors. The correction means provided by the present invention allows for such downstream cell insertion without violating guarantees by generating a calendar slip in the scheduling device.
摘要翻译：基于日历的ATM信元调度装置用于维持信元流的精确整形，以便满足流量管理保证。在某些应用中，小区插入可能发生在调度设备的下游，可能违反业务描述符。由本发明提供的校正装置允许通过在调度设备中生成日历滑动而不违反保证的下游单元插入。

4. 再颁专利

USRE39103E1 Timing reference for scheduling data traffic on multiple ports 有权
标题翻译：在多个端口上调度数据流量的时序参考
公开(公告)号：USRE39103E1
公开(公告)日：2006-05-23
申请号：US09679192
申请日：2000-10-05
申请人： Jason T. Sterne , David W. Carr , Joey M. W. Chow
发明人： Jason T. Sterne , David W. Carr , Joey M. W. Chow
IPC分类号： H04L12/56
CPC分类号： H04L12/5602 , H04J3/0685 , H04L2012/5679 , H04Q11/0478
摘要： Data traffic such as cell streams in an ATM communication network frequently contain data destined for multiple output ports having different transmission data rates. In order to accurately schedule such traffic a clocking signal unique to each output data rate is required. This invention provides systems and methods for generating the necessary clock signals utilizing a single timing reference.
摘要翻译：诸如ATM通信网络中的小区流的数据业务频繁地包含去往具有不同传输数据速率的多个输出端口的数据。为了准确地调度这种业务，需要每个输出数据速率唯一的时钟信号。本发明提供了利用单个定时参考来产生必要时钟信号的系统和方法。

5. 发明授权

US5818839A Timing reference for scheduling data traffic on multiple ports 失效
公开(公告)号：US5818839A
公开(公告)日：1998-10-06
申请号：US884625
申请日：1997-06-27
申请人： Jason T. Sterne , David W. Carr , Joey M. W. Chow
发明人： Jason T. Sterne , David W. Carr , Joey M. W. Chow
IPC分类号： H04L12/56 , H04Q11/04
CPC分类号： H04L12/5602 , H04Q11/0478 , H04J3/0685 , H04L2012/5679
摘要： Data traffic such as cell streams in an ATM communication network frequently contain data destined for multiple output ports having different transmission data rates. In order to accurately schedule such traffic a clocking signal unique to each output data rate is required. This invention provides systems and methods for generating the necessary clock signals utilizing a single timing reference.

6. 发明授权

US07787458B2 Method and apparatus for communicating data packets according to classes of service 有权
标题翻译：根据服务等级来传送数据包的方法和装置
公开(公告)号：US07787458B2
公开(公告)日：2010-08-31
申请号：US09998504
申请日：2001-11-30
申请人： Ken Dubuc , Jason T. Sterne , Thomas E. Davis , Nutan Behki
发明人： Ken Dubuc , Jason T. Sterne , Thomas E. Davis , Nutan Behki
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L41/5077 , H04L41/5022 , H04Q11/0071 , H04Q2011/0084
摘要： A method and apparatus for communicating data packets according to classes of service is described. One or more service interfaces are coupled to a plurality of transport interfaces. The service interfaces carry packets having multiple classes of service, while each of the plurality of transport interfaces carries packets of a single class of service. A differentiated services codepoint profile is associated with each service interface and maps a differentiated services codepoint value of a data packet to a class of service and a drop precedence. The data packet is assigned to a transport interface based on its class of service and its drop precedence. Other factors, such as the destination of the data packet may be considered when assigning the data packet to a transport interface. Data packets from different transport interfaces are preferably enqueued in different queues of a destination service interface.
摘要翻译：描述了根据服务等级来传送数据分组的方法和装置。一个或多个服务接口耦合到多个传输接口。业务接口携带具有多种业务类型的报文，而多个传输接口中的每一个承载单一业务类型的报文。差异化服务码点配置文件与每个服务接口相关联，并将数据包的差分服务码点值映射到服务类别和丢弃优先级。数据包根据其服务类别及其丢弃优先级分配给传输接口。当将数据分组分配给传输接口时，可以考虑其他因素，例如数据分组的目的地。来自不同传输接口的数据分组优选地以目的地服务接口的不同队列入队。

7. 发明授权

US07068659B1 Method and apparatus for virtual path aggregation (VPA) connection admission control (CAC) 失效
标题翻译：虚拟路径聚合（VPA）连接准入控制（CAC）的方法和装置
公开(公告)号：US07068659B1
公开(公告)日：2006-06-27
申请号：US09293293
申请日：1999-04-16
申请人： Roxana Hamedani , Jason T. Sterne , Stanko Vuleta
发明人： Roxana Hamedani , Jason T. Sterne , Stanko Vuleta
IPC分类号： H04L12/28
CPC分类号： H04L12/5601 , H04L2012/5629 , H04L2012/563 , H04L2012/5632 , H04L2012/5651
摘要： A method and apparatus for supporting virtual path aggregations (VPAs) in a communications network is presented. To establish a VPA in the network, a request for the VPA is received, where the request indicates a desired data path between a source switch and a destination switch. Based on the request, it is determined whether or not there are resources available to create the VPA. If the resources are present, the VPA is created. Once created, connections may be established using the VPA by first determining whether or not the needs of the connection are satisfied by the capabilities of the VPA. If the VPA is capable of supporting the connection, the connection is established using the VPA. If the VPA is not capable of supporting the connection, the connection may either be established using other resources or rejected.
摘要翻译：提出了一种用于在通信网络中支持虚拟路径聚合（VPA）的方法和装置。为了在网络中建立VPA，接收到对VPA的请求，其中请求指示源交换机和目的交换机之间的所需数据路径。基于该请求，确定是否存在可用于创建VPA的资源。如果资源存在，则创建VPA。一旦创建，可以使用VPA建立连接，首先通过VPA的能力来确定连接的需求是否满足。如果VPA能够支持连接，则使用VPA建立连接。如果VPA不能支持连接，则连接可以使用其他资源建立或被拒绝。

8. 发明授权

US07184440B1 Multi-protocol switch and method therefore 有权
标题翻译：因此，多协议交换机和方法
公开(公告)号：US07184440B1
公开(公告)日：2007-02-27
申请号：US09625586
申请日：2000-07-26
申请人： Jason T. Sterne , Thomas E. Davis , Robert E. Robotham , Shay Nahum
发明人： Jason T. Sterne , Thomas E. Davis , Robert E. Robotham , Shay Nahum
IPC分类号： H04L12/56 , H04I12/50
CPC分类号： H04L49/30 , H04L49/20 , H04L49/201 , H04L49/25 , H04L49/3009 , H04L49/3081 , H04L49/604 , H04L49/606 , H04L2012/5652
摘要： A multi-protocol switch that supports both ATM and IP traffic and method for use is presented. The multi-protocol switch associates certain input connections, as identified by virtual path identifier/virtual connection identifier (VPI/VCI), with either IP or ATM traffic. When the connection identifier for a cell received indicates that the cell is an ATM cell, the multi-protocol switch forwards the cell through the switch, where the forwarding is based on the connection identifier for the cell. If the connection identifier for a cell indicates that the cell is IP traffic, the cell is stored with other cells included in the IP packet to which the cells correspond within the ingress line card of the switch. The destination address included in the packet is used to determine a forwarding decision for the cells included in the packet. After at least partial reassembly, the packet is segmented and forwarded through the switch based on the forwarding decision determined from the destination address.
摘要翻译：提出了支持ATM和IP流量的多协议交换机和使用方法。多协议交换机将由虚拟路径标识符/虚拟连接标识符（VPI / VCI）标识的某些输入连接与IP或ATM流量相关联。当接收到的小区的连接标识符指示该小区是ATM信元时，多协议交换机通过交换机转发该小区，其中转发基于该小区的连接标识符。如果小区的连接标识符表示该小区是IP业务，则该小区与包括在小区对应的IP分组中的其他小区一起存储在交换机的入口线路卡内。分组中包含的目的地址用于确定分组中包含的小区的转发决定。在至少部分重新组装之后，基于从目的地址确定的转发决定，分组并通过交换机转发分组。

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