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公开(公告)号：US08441922B1
公开(公告)日：2013-05-14
申请号：US13216598
申请日：2011-08-24
IPC分类号： G01R31/08
CPC分类号： H04L49/506 , H04L49/357
摘要： In a network having a computing system interfacing with a storage system via a switch, an average transmit wait count value is compared with a first threshold value. The average transmit wait count value is updated when a switch port has a frame available for transmission but is unable to transmit the frame if a port of the storage system is unable to receive the frame or if another switch port is unable to receive the frame. A congestion message is generated for notifying a management module of congestion at the switch port when the average transmit wait count value reaches the first threshold value. Depending upon the characteristics of the congestion, a notification is sent to the computing system to either only reduce a rate of write operations to reduce congestion, or to reduce both the rate of write operations and a rate of read operations.
摘要翻译： 在具有经由交换机与存储系统接口的计算系统的网络中，将平均发送等待计数值与第一阈值进行比较。 当交换机端口具有可用于传输的帧时，平均发送等待计数值被更新，但是如果存储系统的端口不能接收该帧或者另一个交换机端口不能接收该帧，则不能发送该帧。 当平均发送等待计数值达到第一阈值时，产生拥塞消息以通知管理模块在交换机端口处的拥塞。 根据拥塞的特征，将通知发送到计算系统，以便仅降低写入操作的速率以减少拥塞，或者降低写入操作的速率和读取操作的速率。
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公开(公告)号：US20060053117A1
公开(公告)日：2006-03-09
申请号：US10957895
申请日：2004-09-30
申请人： Gary McAlpine , Tanmay Gupta , Manoj Wadekar
发明人： Gary McAlpine , Tanmay Gupta , Manoj Wadekar
IPC分类号： G06F17/30
CPC分类号： H04L47/20 , H04L47/10 , H04L47/125 , H04L47/2441 , H04L47/26 , H04L47/30 , H04L47/6215
摘要： A node uses a two dimensional array of transmit queues to store frames to be transmitted from the node to another node. The size of the array is governed by the number of directions to which the other node may forward frames once received from the node, and the number of priorities that may be associated with the frames. The transmit queues are distinguished from each other based on direction and priority. A transmitter transmits frames dequeued from the transmit queues to the other node. Control logic that controls the transmit queues receives an indication from the other node whether the other node is experiencing traffic congestion in any of the directions and the priority of frames at or below which the control logic is to control the dequeuing of frames from transmit queues corresponding to the directions in which the other node is experiencing traffic congestion.
摘要翻译： 节点使用发射队列的二维阵列来存储要从节点发送到另一个节点的帧。 阵列的大小由另一个节点可以一旦从节点接收到的帧转发的方向的数量以及可能与帧相关联的优先级的数量来控制。 基于方向和优先级将发送队列彼此区分开。 发射机将发送队列出队的帧发送到另一个节点。 控制发送队列的控制逻辑从另一个节点接收指示，否则其他节点正在任何方向上经历业务拥塞，以及控制逻辑要控制从对应于发送队列的帧出队的帧的优先级 到另一个节点遇到交通拥堵的方向。
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公开(公告)号：US20070058532A1
公开(公告)日：2007-03-15
申请号：US11227897
申请日：2005-09-15
申请人： Manoj Wadekar , Gary McAlpine , Tanmay Gupta
发明人： Manoj Wadekar , Gary McAlpine , Tanmay Gupta
IPC分类号： H04L12/26
摘要： According to one embodiment of the invention, a method comprises measuring traffic congestion experienced by a message transmitted from a source device, and if the measured traffic congestion exceeds a threshold limit, altering at least one bit within a Layer 2 (L2) header of the message. This bit alteration is subsequently used to determine when to notify a source of the message that the message experienced traffic congestion.
摘要翻译： 根据本发明的一个实施例，一种方法包括测量从源设备发送的消息所经历的业务拥塞，并且如果所测量的业务拥塞超过阈值限制，则改变所述第二层（L2）报头中的至少一个比特 信息。 该位改变随后被用于确定何时通知消息的消息，消息经历交通拥堵。
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公开(公告)号：US20070053294A1
公开(公告)日：2007-03-08
申请号：US11219528
申请日：2005-09-02
申请人： Michael Ho , Manoj Wadekar
发明人： Michael Ho , Manoj Wadekar
IPC分类号： H04J1/16
摘要： Apparatus, systems, methods, and articles described generally herein may receive a first packet marked with a congestion indicator (CI). Upon receipt of the CI, a load-balancing operation may be performed among a plurality of physical links upstream from a point of congestion to alleviate the congestion. Other embodiments may be described and claimed.
摘要翻译： 本文一般描述的装置，系统，方法和文章可以接收标记有拥塞指示符（CI）的第一分组。 在接收到CI时，可以在从拥塞点上游的多个物理链路之间执行负载平衡操作，以减轻拥塞。 可以描述和要求保护其他实施例。
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公开(公告)号：US20060104298A1
公开(公告)日：2006-05-18
申请号：US11114641
申请日：2005-04-25
申请人： Gary McAlpine , Tanmay Gupta , Manoj Wadekar
发明人： Gary McAlpine , Tanmay Gupta , Manoj Wadekar
IPC分类号： H04L1/00
CPC分类号： H04L47/10 , H04L47/115 , H04L47/263 , H04L49/90 , H04L49/9078
摘要： A source node receives related frames of data to be transmitted from the source node to a destination node and places the frames in a queue. The queue is associated with a communication path over which the related frames are to be transmitted to the destination node. An interface that couples the source node to the communication path receives an indication directed to the source node of traffic congestion in the communication path. In response, the source node controls the rate at which the related frames of data are transferred from the queue to a transmit buffer accessible to the interface, in order to relieve the traffic congestion in the communication path.
摘要翻译： 源节点接收要从源节点发送到目的节点的相关数据帧，并将帧放入队列。 队列与通信路径相关联，通过该路径将相关帧发送到目的地节点。 将源节点耦合到通信路径的接口接收到通信路径中针对源节点的业务拥塞的指示。 作为响应，源节点控制相关数据帧从队列传送到接口可访问的发送缓冲器的速率，以便减轻通信路径中的业务拥塞。
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公开(公告)号：US08798047B1
公开(公告)日：2014-08-05
申请号：US13220249
申请日：2011-08-29
申请人： Manoj Wadekar , Bruce A. Klemin , Gaurav Agarwal
发明人： Manoj Wadekar , Bruce A. Klemin , Gaurav Agarwal
CPC分类号： H04L12/56 , H04J3/1682 , H04L12/4633 , H04L29/0653 , H04L69/22
摘要： The present embodiments support both tunneling and offload functionality for tunneled packet having a tunnel header, the tunnel header encapsulating a packet, the packet having a packet header and a payload. When a tunneled packet is received at a network device, an offset value for the packet header is determined by comparing the tunnel header to a plurality of entries stored at a data structure maintained by the network device. The offset value is used for pre-processing the packet, and an offload module of the network device performs an offload function.
摘要翻译： 本实施例支持具有隧道报头的隧道分组的隧道和卸载功能，隧道报头封装分组，分组具有分组报头和有效载荷。 当在网络设备处接收到隧道分组时，通过将隧道报头与存储在由网络设备维护的数据结构存储的多个条目进行比较来确定分组报头的偏移值。 偏移值用于预处理分组，网络设备的卸载模块执行卸载功能。
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公开(公告)号：US08238239B2
公开(公告)日：2012-08-07
申请号：US12345791
申请日：2008-12-30
申请人： Manoj Wadekar , Hitesh Rastogi
发明人： Manoj Wadekar , Hitesh Rastogi
IPC分类号： H04L12/26
CPC分类号： H04L12/4013 , H04L12/413 , H04L47/10 , H04L47/115 , H04L47/13 , H04L47/263 , H04L47/30 , Y02D50/10
摘要： Packet flow control techniques are disclosed. In one example case, a flow control method is provided that includes transmitting a plurality of packets with an inter-packet gap disposed between neighboring packets, and increasing the length of the inter-packet gap to decrease packet rate, wherein the increased length is selected based on severity of a congestion condition. In another example case, a flow control system is provided that includes circuitry for transmitting and/or receiving a plurality of packets with an inter-packet gap disposed between neighboring packets, and circuitry for increasing the length of the inter-packet gap to decrease packet rate, wherein the increased length is selected based on severity of a congestion condition. The techniques can be carried out at one node of a communication system (such as in a backplane switch) or multiple nodes (such as between a backplane switch and a circuit board operatively coupled to the backplane).
摘要翻译： 公开了分组流控制技术。 在一个示例的情况下，提供了流控制方法，其包括：发送具有布置在相邻分组之间的分组间间隔的多个分组，并且增加分组间间隔的长度以降低分组速率，其中选择增加的长度 基于拥塞状况的严重性。 在另一示例性情况下，提供流控制系统，其包括用于发送和/或接收具有布置在相邻分组之间的分组间间隔的多个分组的电路，以及用于增加分组间间隔的长度以减少分组的电路 速率，其中基于拥塞状况的严重性选择增加的长度。 这些技术可以在通信系统（例如在背板交换机）的一个节点或多个节点（例如背板交换机和可操作地耦合到背板的电路板之间）的一个节点上执行。
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公开(公告)号：US07733770B2
公开(公告)日：2010-06-08
申请号：US11114641
申请日：2005-04-25
申请人： Gary McAlpine , Tanmay Gupta , Manoj Wadekar
发明人： Gary McAlpine , Tanmay Gupta , Manoj Wadekar
CPC分类号： H04L47/10 , H04L47/115 , H04L47/263 , H04L49/90 , H04L49/9078
摘要： A source node receives related frames of data to be transmitted from the source node to a destination node and places the frames in a queue. The queue is associated with a communication path over which the related frames are to be transmitted to the destination node. An interface that couples the source node to the communication path receives an indication directed to the source node of traffic congestion in the communication path. In response, the source node controls the rate at which the related frames of data are transferred from the queue to a transmit buffer accessible to the interface, in order to relieve the traffic congestion in the communication path.
摘要翻译： 源节点接收要从源节点发送到目的节点的相关数据帧，并将帧放入队列。 队列与通信路径相关联，通过该路径将相关帧发送到目的地节点。 将源节点耦合到通信路径的接口接收到通信路径中针对源节点的业务拥塞的指示。 作为响应，源节点控制相关数据帧从队列传送到接口可访问的发送缓冲器的速率，以便减轻通信路径中的业务拥塞。
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公开(公告)号：US07680039B2
公开(公告)日：2010-03-16
申请号：US11343720
申请日：2006-01-31
申请人： Michael Ho , Manoj Wadekar
发明人： Michael Ho , Manoj Wadekar
IPC分类号： G01R31/08
CPC分类号： H04L47/10 , H04L43/0852 , H04L47/11 , H04L47/125 , H04L47/14 , H04L47/31 , H04W28/08
摘要： Apparatus, systems, methods, and articles described generally herein may receive a first packet marked with a congestion indicator (CI). Upon receipt of the CI, a load-balancing operation may be performed among a plurality of physical links upstream from a point of congestion to alleviate the congestion. Other embodiments may be described and claimed.
摘要翻译： 本文一般描述的装置，系统，方法和文章可以接收标记有拥塞指示符（CI）的第一分组。 在接收到CI时，可以在从拥塞点上游的多个物理链路之间执行负载平衡操作，以减轻拥塞。 可以描述和要求保护其他实施例。
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公开(公告)号：US20070064605A1
公开(公告)日：2007-03-22
申请号：US11343720
申请日：2006-01-31
申请人： Michael Ho , Manoj Wadekar
发明人： Michael Ho , Manoj Wadekar
IPC分类号： H04L12/26
CPC分类号： H04L47/10 , H04L43/0852 , H04L47/11 , H04L47/125 , H04L47/14 , H04L47/31 , H04W28/08
摘要： Apparatus, systems, methods, and articles described generally herein may receive a first packet marked with a congestion indicator (CI). Upon receipt of the CI, a load-balancing operation may be performed among a plurality of physical links upstream from a point of congestion to alleviate the congestion. Other embodiments may be described and claimed.
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