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1. 发明授权

US08427958B2 Dynamic latency-based rerouting 有权
公开(公告)号：US08427958B2
公开(公告)日：2013-04-23
申请号：US12771943
申请日：2010-04-30
申请人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Venkata Pramod Balakavi
发明人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Venkata Pramod Balakavi
IPC分类号： G06F11/00
CPC分类号： H04L45/70 , H04L43/0864 , H04L43/106 , H04L45/121 , H04L45/26
摘要： A switch creates and dynamically updates a latency map of a network to adjust routing of flows. Further, the network is monitored to detect latency issues and trigger a dynamic adjustment of routing based on the latency map. In this manner, a flow can be routed along a route (i.e., a faster route) that provides less latency than other available routes. The latency map can be generated based on latency probe packets that are issued from and returned to the source switch. By evaluating many such latent probe packets that have traveled along many available routes (e.g., corresponding to various ports of the switch), the switch or associated administrative logic can dynamically adjust the latency map to updated latency information of available routes. Therefore, responsive to a trigger, the source switch can dynamically adjust the routing of a flow based on latency issues discerned from the network.

2. 发明申请

US20110267952A1 DYNAMIC LATENCY-BASED REROUTING 有权
标题翻译：基于动态基于延迟的路由
公开(公告)号：US20110267952A1
公开(公告)日：2011-11-03
申请号：US12771943
申请日：2010-04-30
申请人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Venkata Pramod Balakavi
发明人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Venkata Pramod Balakavi
IPC分类号： H04L12/24
CPC分类号： H04L45/70 , H04L43/0864 , H04L43/106 , H04L45/121 , H04L45/26
摘要： A switch creates and dynamically updates a latency map of a network to adjust routing of flows. Further, the network is monitored to detect latency issues and trigger a dynamic adjustment of routing based on the latency map. In this manner, a flow can be routed along a route (i.e., a faster route) that provides less latency than other available routes. The latency map can be generated based on latency probe packets that are issued from and returned to the source switch. By evaluating many such latent probe packets that have traveled along many available routes (e.g., corresponding to various ports of the switch), the switch or associated administrative logic can dynamically adjust the latency map to updated latency information of available routes. Therefore, responsive to a trigger, the source switch can dynamically adjust the routing of a flow based on latency issues discerned from the network.
摘要翻译：交换机创建并动态更新网络的延迟映射以调整流的路由。此外，监视网络以检测延迟问题，并且基于延迟映射触发路由的动态调整。以这种方式，可以沿着提供比其他可用路由更少的延迟的路由（即，更快的路由）来路由流。延迟映射可以基于从源交换机发出并返回给源交换机的延迟探测数据包生成。通过评估沿着许多可用路线（例如，对应于交换机的各种端口）行进的许多这样的潜在探测分组，交换机或相关联的管理逻辑可以动态地将延迟映射调整为可用路由的更新的等待时间信息。因此，响应于触发，源交换机可以基于从网络识别的延迟问题来动态地调整流的路由。

3. 发明申请

US20120096310A1 REDUNDANCY LOGIC 审中-公开
公开(公告)号：US20120096310A1
公开(公告)日：2012-04-19
申请号：US12906339
申请日：2010-10-18
申请人： Surya Prakash Varanasi , Kung-Ling Ko , Satsheel B. Altekar , Venkata Pramod Balakavi
发明人： Surya Prakash Varanasi , Kung-Ling Ko , Satsheel B. Altekar , Venkata Pramod Balakavi
IPC分类号： G06F11/14 , G06F11/07
CPC分类号： G06F11/1666 , G06F11/1032 , G06F11/2056
摘要： A network system provides network device having a secondary memory that mirrors the content of a primary memory maintaining data structure parameters entries. The integrity of each data structure parameter entry is tested as the entry is output from the primary memory, such as by using a parity test. If an error is detected in the entry, a corresponding entry from the second memory structure is select for use instead of the entry from the primary memory. The corresponding entries in each memory are then flushed, updated, synchronized, or overwritten from the each memory and processing continues using the new entries or other entries from the primary memory. In the rare instance that corresponding entries from both memories exhibit an error, then an error notification is issued.
摘要翻译：网络系统提供具有辅助存储器的网络设备，该辅助存储器镜像保持数据结构参数条目的主存储器的内容。当条目从主存储器输出时，例如通过使用奇偶校验测试，测试每个数据结构参数条目的完整性。如果在条目中检测到错误，则选择来自第二存储器结构的相应条目用于代替来自主存储器的条目。然后每个存储器中的相应条目从每个存储器中刷新，更新，同步或重写，并且处理继续使用来自主存储器的新条目或其他条目。在来自两个存储器的相应条目出现错误的罕见情况下，发出错误通知。

4. 发明授权

US09154394B2 Dynamic latency-based rerouting 有权
标题翻译：基于动态基于延迟的重新路由
公开(公告)号：US09154394B2
公开(公告)日：2015-10-06
申请号：US12892115
申请日：2010-09-28
申请人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Vankata Pramod Balakavi
发明人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Vankata Pramod Balakavi
IPC分类号： H04L1/00 , H04Q11/00 , H04L12/26 , H04L12/703 , H04L12/801 , H04L12/727 , H04L12/721
CPC分类号： H04L43/0858 , H04L1/00 , H04L45/121 , H04L45/28 , H04L45/70 , H04L47/12
摘要： A switch creates and dynamically updates a latency map of a network to adjust routing of flows. Further, the network is monitored to detect latency issues and trigger a dynamic adjustment of routing based on the latency map. In this manner, a flow can be routed along a route (i.e., a faster route) that provides less latency than other available routes. The latency map can be generated based on latency probe packets that are issued from and returned to the source switch. By evaluating many such latent probe packets that have traveled along many available routes (e.g., corresponding to various ports of the switch), the switch or associated administrative logic can dynamically adjust the latency map to updated latency information of available routes. Therefore, responsive to a trigger, the source switch can dynamically adjust the routing of a flow based on latency issues discerned from the network.
摘要翻译：交换机创建并动态更新网络的延迟映射以调整流的路由。此外，监视网络以检测延迟问题，并且基于延迟映射触发路由的动态调整。以这种方式，可以沿着提供比其他可用路由更少的延迟的路由（即，更快的路由）来路由流。延迟映射可以基于从源交换机发出并返回给源交换机的延迟探测数据包生成。通过评估沿着许多可用路线（例如，对应于交换机的各种端口）行进的许多这样的潜在探测分组，交换机或相关联的管理逻辑可以动态地将延迟映射调整为可用路由的更新的等待时间信息。因此，响应于触发，源交换机可以基于从网络识别的延迟问题来动态地调整流的路由。

5. 发明申请

US20120075999A1 DYNAMIC LATENCY-BASED REROUTING 有权
标题翻译：基于动态基于延迟的路由
公开(公告)号：US20120075999A1
公开(公告)日：2012-03-29
申请号：US12892115
申请日：2010-09-28
申请人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Vankata Pramod Balakavi
发明人： Kung-Ling Ko , Surya Prakash Varanasi , Satsheel B. Altekar , John Michael Terry , Vankata Pramod Balakavi
IPC分类号： H04L12/26
CPC分类号： H04L43/0858 , H04L1/00 , H04L45/121 , H04L45/28 , H04L45/70 , H04L47/12
摘要： A switch creates and dynamically updates a latency map of a network to adjust routing of flows. Further, the network is monitored to detect latency issues and trigger a dynamic adjustment of routing based on the latency map. In this manner, a flow can be routed along a route (i.e., a faster route) that provides less latency than other available routes. The latency map can be generated based on latency probe packets that are issued from and returned to the source switch. By evaluating many such latent probe packets that have traveled along many available routes (e.g., corresponding to various ports of the switch), the switch or associated administrative logic can dynamically adjust the latency map to updated latency information of available routes. Therefore, responsive to a trigger, the source switch can dynamically adjust the routing of a flow based on latency issues discerned from the network.
摘要翻译：交换机创建并动态更新网络的延迟映射以调整流的路由。此外，监视网络以检测延迟问题，并且基于延迟映射触发路由的动态调整。以这种方式，可以沿着提供比其他可用路由更少的延迟的路由（即，更快的路由）来路由流。延迟映射可以基于从源交换机发出并返回给源交换机的延迟探测数据包生成。通过评估沿着许多可用路线（例如，对应于交换机的各种端口）行进的许多这样的潜在探测分组，交换机或相关联的管理逻辑可以动态地将等待时间图调整为可用路由的更新的等待时间信息。因此，响应于触发，源交换机可以基于从网络识别的延迟问题来动态地调整流的路由。

6. 发明授权

US08996720B2 Method and apparatus for mirroring frames to a remote diagnostic system 有权
标题翻译：将镜像镜像到远程诊断系统的方法和装置
公开(公告)号：US08996720B2
公开(公告)日：2015-03-31
申请号：US12725171
申请日：2010-03-16
申请人： Satsheel Bhasker Altekar , Venkata Pramod Balakavi , Kung-Ling Ko , Surya Prakash Varanasi
发明人： Satsheel Bhasker Altekar , Venkata Pramod Balakavi , Kung-Ling Ko , Surya Prakash Varanasi
IPC分类号： G06F15/173 , H04L12/26 , H04L12/46
CPC分类号： H04L43/12 , H04L12/4633
摘要： Apparatuses and methods to mirror frames received at an input port or provided by an output port to a port not connected to the device performing the mirroring operation. A frame being sent to a diagnostic system has a mirror header added to allow the frame to be routed through any intervening switches in the same fabric. The final switch or the diagnostic system removes the mirror header. If the diagnostic system is attached in a different fabric, encapsulation and inter-fabric routing headers are added as needed to the frame containing the mirror header. This allows the frame to traverse multiple fabrics to reach the diagnostic system. The encapsulation and inter-fabric routing headers are removed as done normally. This allows a diagnostic system to be connected to any switch in the network, either in the same or a different fabric.
摘要翻译：将在输入端口接收或由输出端口提供的帧映射到未连接到执行镜像操作的设备的端口的设备和方法。发送到诊断系统的帧具有添加的镜头，以允许帧通过相同结构中的任何中间交换机路由。最终交换机或诊断系统将删除镜头。如果诊断系统附加在不同的结构中，则根据需要将封装和结构间路由头添加到包含镜像头的帧。这允许框架遍历多个结构以到达诊断系统。封装和结构间路由标头按照正常方式进行删除。这允许诊断系统连接到网络中的任何交换机，无论是相同还是不同的结构。

7. 发明申请

US20110216769A1 Dynamic Path Selection 审中-公开
标题翻译：动态路径选择
公开(公告)号：US20110216769A1
公开(公告)日：2011-09-08
申请号：US12719321
申请日：2010-03-08
申请人： Subramanian Lakshmanan , Kung-Ling Ko , Sathish Gnanasekaran , Venkata Pramod Balakavi
发明人： Subramanian Lakshmanan , Kung-Ling Ko , Sathish Gnanasekaran , Venkata Pramod Balakavi
IPC分类号： H04L12/56
CPC分类号： H04L12/56
摘要： A switch/router dynamically selects a path from multiple available paths between a source destination pair for a frame. A hash function generates a hash value from frame parameters such as source ID, destination ID, exchange ID, etc. The hash value is given as an input to a plurality of range comparators where each range comparator has a range of values associated with it. If the hash value falls within a range associated with a range comparator, that range comparator generates an in-range signal. A path selector module detects which range comparator has generated the in-range signal, and determines a path associated with that range comparator from previously stored information. The frame is transmitted via the selected path. The ranges associated with each range comparator can be non-overlapping and unequal in size. The number of range comparators can be equal to a number of selected multiple paths.
摘要翻译：交换机/路由器动态地从帧的源目的地对之间的多个可用路径选择路径。哈希函数从诸如源ID，目的地ID，交换ID等帧参数生成哈希值。散列值作为输入，被给予多个范围比较器，其中每个范围比较器具有与其相关联的值的范围。如果散列值落在与范围比较器相关联的范围内，则该范围比较器产生范围内信号。路径选择器模块检测哪个范围比较器已经产生了范围内信号，并且从先前存储的信息确定与该范围比较器相关联的路径。帧通过所选路径传输。与每个范围比较器相关联的范围可以是非重叠的并且在大小上是不相等的。范围比较器的数量可以等于所选多个路径的数量。

8. 发明申请

US20110085444A1 FLOW AUTODETERMINATION 审中-公开
标题翻译：流动自动化
公开(公告)号：US20110085444A1
公开(公告)日：2011-04-14
申请号：US12577868
申请日：2009-10-13
申请人： Kung-Ling Ko , Surya Varanasi , Wei-Chung Huang , Venkata Pramod Balakavi
发明人： Kung-Ling Ko , Surya Varanasi , Wei-Chung Huang , Venkata Pramod Balakavi
IPC分类号： H04L12/26
CPC分类号： H04L49/00 , H04L43/026 , H04L43/028 , H04L47/12 , H04L49/501
摘要： Autodetermination circuitry examines packets transmitted internally to an egress port of a switching device in order to learn the associated flow. The autodetermination circuitry maintains a flow memory recording the highest traffic volume flows and unlearns the flows exhibiting lower traffic volumes to make room for other higher traffic volume flows. Accordingly, as some flows decrease in traffic volume and other flows increase in traffic volume, the flows decreasing below a threshold are dropped from a flow memory, and other flows increasing in volume above the threshold are added to the flow memory. In this manner, only the most likely offending flows are maintained in the flow memory. Accordingly, when congestion is detected, the switching device can identify one or more source devices contributing the most to the congestion and take steps to alleviate the congestion by decreasing the traffic volume originating from one or more of those sources.
摘要翻译：自动确定电路检查内部传输到交换设备的出口端口的数据包，以便了解相关流程。自动确定电路维护记录最高流量的流量存储器，并且显示出具有较低流量的流量，为其他较高流量的流量腾出空间。因此，由于业务量的一些流量减少，流量的其他流量增加，流量低于阈值的流量从流量存储器中下降，并且流量存储器中增加体积超过阈值的其他流量。以这种方式，在流量存储器中仅维持最可能的违规流。因此，当检测到拥塞时，交换设备可以识别对拥塞贡献最多的一个或多个源设备，并且通过减少源自这些源中的一个或多个的业务量来采取措施来减轻拥塞。

9. 发明申请

US20120076149A1 Transmission bandwidth quality of service 审中-公开
标题翻译：传输带宽服务质量
公开(公告)号：US20120076149A1
公开(公告)日：2012-03-29
申请号：US12889224
申请日：2010-09-23
申请人： Kung-Ling Ko , Tony Nguyen , Venkata Pramod Balakavi
发明人： Kung-Ling Ko , Tony Nguyen , Venkata Pramod Balakavi
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L12/433
摘要： A bandwidth limiting circuit provides limiting the bandwidth of a group of virtual channels at a transmitting port to a maximum value. A limiting circuit includes a register that is repeatedly incremented with a threshold value, which threshold value is related to the desired maximum bandwidth for the group. The register is decremented by the frame length, in bytes, of the frame transmitted from one of the virtual channels belonging to the group. A comparator enables frame transmission for the group if the register value is greater than zero. A bandwidth guarantee circuit provides at least the bandwidth specified by the limiting circuit. The guarantee circuit enables one of the groups for frame transmission based on a fairness algorithm when the outputs of comparators of each of the limiting circuit are low.
摘要翻译：带宽限制电路将发送端口处的一组虚拟信道的带宽限制为最大值。限制电路包括以阈值重复递增的寄存器，该阈值与该组所需的最大带宽相关。寄存器减少从属于该组的虚拟信道之一发送的帧的帧长度（以字节为单位）。如果寄存器值大于零，则比较器使能该组的帧传输。带宽保证电路至少提供由限制电路指定的带宽。当每个限制电路的比较器的输出为低电平时，保证电路使得能够基于公平算法进行帧传输的组中的一个。

10. 发明授权

US07460537B2 Supplementary header for multifabric and high port count switch support in a fibre channel network 有权
标题翻译：光纤通道网络中的多端口和高端口计数开关支持的补充头
公开(公告)号：US07460537B2
公开(公告)日：2008-12-02
申请号：US10767410
申请日：2004-01-29
申请人： Timothy John Millet , Surya Prakash Varanasi , Zahid Hussain , Kung-Ling Ko
发明人： Timothy John Millet , Surya Prakash Varanasi , Zahid Hussain , Kung-Ling Ko
IPC分类号： H04J14/08
CPC分类号： H04L49/25 , H04L1/0083 , H04L1/18 , H04L12/46 , H04L49/357
摘要： Accordingly, there is disclosed herein an augmented Fibre Channel (FC) frame format which may provide support for multiple fabric FC networks, and may improve the performance of modularly-constructed switches. In one embodiment, the augmented FC frame format is modulated on a carrier signal and the frame includes: a start-of-frame field; a supplementary header field that follows the start-of-frame field; a frame header field that follows the supplementary header field; a cyclic redundancy code (CRC) checksum field; and an end-of-frame field that follows the CRC checksum field. The supplementary header field may include a destination tag that identifies a target fabric to which the frame is directed. Alternatively, or in addition, the supplementary header field may include an egress port identifier that identifies a switch port through which the frame is to exit a switch. The supplementary header may also include flags to request special handling by the receiver.
摘要翻译：因此，这里公开了增强的光纤通道（FC）帧格式，其可以提供对多个结构FC网络的支持，并且可以提高模块化构造的交换机的性能。在一个实施例中，增强的FC帧格式在载波信号上被调制，并且帧包括：帧起始场; 跟随起始帧字段的补充头字段; 跟随补充头字段的帧头字段; 循环冗余码（CRC）校验和字段; 以及CRC校验和字段之后的帧结束字段。补充头字段可以包括标识帧被定向到的目标结构的目的地标签。或者或另外，补充报头字段可以包括标识交换机端口的出口端口标识符，帧通过该交换端口退出交换机。辅助报头还可以包括要求接收机特殊处理的标志。

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