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1. 发明申请

WO2006047109A3 ETHERNET EXTENSION FOR THE DATA CENTER 审中-公开
标题翻译：以太网扩展数据中心
公开(公告)号：WO2006047109A3
公开(公告)日：2006-11-23
申请号：PCT/US2005037069
申请日：2005-10-14
申请人： CISCO TECH INC , GAI SILVANO , EDSALL THOMAS , CAFIERO LUCA , BERGAMASCO DAVIDE , DUTT DINESH , BONOMI FLAVIO
发明人： GAI SILVANO , EDSALL THOMAS , CAFIERO LUCA , BERGAMASCO DAVIDE , DUTT DINESH , BONOMI FLAVIO
IPC分类号： H04J1/16 , G01R31/08 , G06F11/00 , G06F15/173 , G08C15/00 , H04J3/14 , H04L1/00 , H04L12/26
CPC分类号： H04L12/4633 , H04L12/4641 , H04L47/10 , H04L47/13 , H04L47/24 , H04L47/266 , H04L47/32 , H04L47/39 , H04L69/22
摘要： The present invention provides methods and devices for implementing a Low Latency Ethernet ("LLE") solution, also referred to herein as a Data Center Ethernet ("DCE") solution, which simplifies the connectivity of data centers and provides a high bandwidth, low latency network for carrying Ethernet and storage traffic. Some aspects of the invention involve transforming FC frames into a format suitable for transport on an Ethernet. Some preferred implementations of the invention implement multiple virtual lanes ("VLs") in a single physical connection of a data center or similar network. Some VLs are "drop" VLs, with Ethernet-like behavior, and others are "no-drop" lanes with FC-like behavior. Some preferred implementations of the invention provide guaranteed bandwidth based on credits and VL. Active buffer management allows for both high reliability and low latency while using small frame buffers. Preferably, the rules for active buffer management are different for drop and no drop VLs.
摘要翻译：本发明提供了用于实现低延迟以太网（“LLE”）解决方案的方法和设备，该解决方案在本文中也称为数据中心以太网（“DCE”）解决方案，其简化了数据中心的连接性并提供了高带宽，低用于承载以太网和存储流量的延迟网络。本发明的一些方面涉及将FC帧变换成适于在以太网上传输的格式。本发明的一些优选实现在数据中心或类似网络的单个物理连接中实现多个虚拟通道（“VL”）。一些VL是“下降”VL，具有类似以太网的行为，而其他VL是具有类似FC的行为的“不丢弃”通道。本发明的一些优选实施方案提供了基于信用和VL的保证带宽。使用小帧缓冲区时，主动缓冲区管理可实现高可靠性和低延迟。优选地，用于主动缓冲器管理的规则对于丢弃和不丢弃VL是不同的。

2. 发明申请

WO2006057730A3 NETWORK DEVICE ARCHITECTURE FOR CONSOLIDATING INPUT/OUTPUT AND REDUCING LATENCY 审中-公开
标题翻译：用于整合输入/输出和减少延迟的网络设备架构
公开(公告)号：WO2006057730A3
公开(公告)日：2007-03-08
申请号：PCT/US2005037239
申请日：2005-10-13
申请人： CISCO TECH INC , GAI SILVANO , EDSALL THOMAS , BERGAMASCO DAVIDE , DUTT DINESH , BONOMI FLAVIO
发明人： GAI SILVANO , EDSALL THOMAS , BERGAMASCO DAVIDE , DUTT DINESH , BONOMI FLAVIO
IPC分类号： H04L12/28
CPC分类号： H04L47/10 , H04L12/413 , H04L47/32 , H04L47/33 , H04L47/39 , H04L49/90
摘要： The present invention provides methods and devices for implementing a Low Latency Ethernet ("LLE") solution, also referred to herein as a Data Center Ethernet ("DCE") solution, which simplifies the connectivity of data centers and provides a high bandwidth, low latency network for carrying Ethernet and storage traffic. Some aspects of the invention involve transforming FC frames into a format suitable for transport on an Ethernet. Some preferred implementations of the invention implement multiple virtual lanes ("VLs") in a single physical connection of a data center or similar network. Some VLs are "drop" VLs (1505), with Ethernet-like behavior, and others are "no-drop" lanes (1510 )with FC-like behavior. Some preferred implementations of the invention provide guaranteed bandwidth based on credits and VL. Active buffer management allows for both high reliability and low latency while using small frame buffers. Preferably, the rules for active buffer management are different for drop and no drop VLs.
摘要翻译：本发明提供了用于实现低延迟以太网（“LLE”）解决方案的方法和设备，这也被称为数据中心以太网（“DCE”）解决方案，其简化了数据中心的连接性并提供了高带宽，低用于承载以太网和存储流量的延迟网络。本发明的一些方面涉及将FC帧变换成适于在以太网上传输的格式。本发明的一些优选实现在数据中心或类似网络的单个物理连接中实现多个虚拟通道（“VL”）。一些VL是“drop”VL（1505），具有类似以太网的行为，而其他VL是类似FC的行为的“不丢弃”通道（1510）。本发明的一些优选实施方案提供了基于信用和VL的保证带宽。使用小帧缓冲区时，主动缓冲区管理可实现高可靠性和低延迟。优选地，用于主动缓冲器管理的规则对于丢弃和不丢弃VL是不同的。

3. 发明申请

WO2007050250A2 METHODS AND DEVICES FOR BACKWARD CONGESTION NOTIFICATION 审中-公开
标题翻译：用于后向集中通知的方法和装置
公开(公告)号：WO2007050250A2
公开(公告)日：2007-05-03
申请号：PCT/US2006038858
申请日：2006-10-03
申请人： CISCO TECH INC , BERGAMASCO DAVIDE , BALDINI ANDREA , ALARIA VALENTINA , BONOMI FLAVIO , PAN RONG
发明人： BERGAMASCO DAVIDE , BALDINI ANDREA , ALARIA VALENTINA , BONOMI FLAVIO , PAN RONG
IPC分类号： H04L12/26
CPC分类号： H04L43/0882 , H04L43/062 , H04L47/10 , H04L47/11 , H04L47/263 , H04L47/30
摘要： The present invention provides improved methods and devices for managing network congestion. Preferred implementations of the invention allow congestion to be pushed from congestion points in the core of a network to reaction points, which may be edge devices, host devices or components thereof. Preferably, rate limiters shape individual flows of the reaction points that are causing congestion. Parameters of these rate limiters are preferably tuned based on feedback from congestion points, e.g., in the form of backward congestion notification ("BCN") messages. In some implementations, such BCN messages include congestion change information and at least one instantaneous measure of congestion. The instantaneous measure(s) of congestion may be relative to a threshold of a particular queue and/or relative to a threshold of a buffer that includes a plurality of queues.
摘要翻译：本发明提供了用于管理网络拥塞的改进的方法和设备。本发明的优选实施方式允许将拥塞从网络核心中的拥塞点推送到可能是边缘设备，主机设备或其组件的反应点。优选地，速率限制器形成引起堵塞的反应点的各个流。这些速率限制器的参数优选地基于来自拥塞点的反馈来调整，例如以后向拥塞通知（“BCN”）消息的形式。在一些实现中，这样的BCN消息包括拥塞变化信息和至少一个拥塞的瞬时测量。拥塞的瞬时测量可以是相对于特定队列的阈值和/或相对于包括多个队列的缓冲器的阈值。

4. 发明申请

WO2006047092A2 ACTIVE QUEUE MANAGEMENT METHODS AND DEVICES 审中-公开
标题翻译：主动队列管理方法与设备
公开(公告)号：WO2006047092A2
公开(公告)日：2006-05-04
申请号：PCT/US2005036700
申请日：2005-10-13
申请人： CISCO TECH IND , BERGAMASCO DAVIDE , BONOMI FLAVIO , ALARIA VALENTINA , BALDINI ANDREA
发明人： BERGAMASCO DAVIDE , BONOMI FLAVIO , ALARIA VALENTINA , BALDINI ANDREA
IPC分类号： H04L12/413 , H04J3/24
CPC分类号： H04L47/10 , H04L47/24 , H04L47/26 , H04L47/30 , H04L47/31
摘要： Novel methods and devices are provided for AQM of input-buffered network devices. Preferred implementations of the invention control overall buffer occupancy while protecting uncongested individual VOQs. The probability of setting a "global drop flag" (which is not necessarily used to trigger packet drops, but may also be used to trigger other AQM responses) may depend, at least in part, on the lesser of a running average of buffer occupancy and instantaneous buffer occupancy. In some preferred embodiments, this probability also depends on the number of active VOQs. Moreover, a global drop flag is set in conjunction with a drop threshold M associated with the VOQs. Whether an AQM response is made may depend on whether a global drop flag has been set and whether a destination VOQ contains M or more packets. DifferentM values may be established for different classes of traffic, e.g., with higher M values for higher-priority traffic. AQM responses (e.g., to drop packets) may be taken more aggressively when there is a larger number of active VOQs.
摘要翻译：为输入缓冲网络设备的AQM提供了新的方法和设备。本发明的优选实施方式控制整体缓冲器占用，同时保护非拥塞的个体VOQ。设置“全局丢弃标志”（其不一定用于触发分组丢弃，但也可用于触发其它AQM响应）的概率至少部分地取决于缓冲器占用的运行平均值的较小值和瞬时缓冲区占用。在一些优选实施例中，该概率也取决于活动VOQ的数量。此外，全局丢弃标志与与VOQ相关联的丢弃阈值M一起设置。是否进行AQM响应可能取决于是否设置了全局丢弃标志，以及目的地VOQ是否包含M个或更多个数据包。可以为不同类别的业务建立不同的M值，例如，对于较高优先级业务具有较高的M值。当存在较大数量的活动VOQ时，AQM响应（例如，丢弃分组）可能被更积极地采用。

5. 发明申请

WO2007124296A2 A MODIFICATION OF POLICING METHODS TO MAKE THEM MORE TCP-FRIENDLY 审中-公开
标题翻译：改变政策方法使其更加TCP友好
公开(公告)号：WO2007124296A2
公开(公告)日：2007-11-01
申请号：PCT/US2007066743
申请日：2007-04-17
申请人： CISCO TECH INC , PAN RONG , BONOMI FLAVIO , VARGHESE GEORGE
发明人： PAN RONG , BONOMI FLAVIO , VARGHESE GEORGE
IPC分类号： H04L12/26
CPC分类号： H04L47/215 , H04L47/193 , H04L47/20
摘要： Various improvements are provided for prior art policing methods, including token bucket methods and virtual time policing methods. Some preferred methods of the invention involve assigning a non-zero drop probability even when the packet would otherwise have been transmitted according to a prior art policing method. For example, a non-zero drop probability may be assigned even when there are sufficient tokens in a token bucket to allow transmission of the packet. A non-zero drop probability may be assigned, for example, when a token bucket level is at or below a predetermined threshold or according to a rate at which a token bucket is being emptied. Some implementations involve treating a token bucket as a virtual queue wherein the number of free elements in the virtual queue is proportional to the number of remaining tokens in the token bucket. Such implementations may involve predicting a future virtual queue size according to a previous virtual size and using this predicted value to calculate a drop probability.
摘要翻译：为现有技术的监管方法提供了各种改进，包括令牌桶方法和虚拟时间监管方法。本发明的一些优选方法涉及分配非零丢弃概率，即使当根据现有技术的监管方法将分组本来已被传输时。例如，即使在令牌桶中有足够的令牌来允许分组的传输，也可以分配非零丢弃概率。例如，当令牌桶级别等于或低于预定阈值或者根据令牌桶被清空的速率时，可以分配非零丢弃概率。一些实现涉及将令牌桶视为虚拟队列，其中虚拟队列中的空闲元素的数量与令牌桶中剩余令牌的数量成比例。这样的实现可以涉及根据先前的虚拟大小预测未来的虚拟队列大小，并且使用该预测值来计算丢弃概率。

6. 发明申请

WO2008002801A3 DETECTION OF FREQUENT AND DISPERSED INVARIANTS 审中-公开
标题翻译：检测经常和分散的不动产
公开(公告)号：WO2008002801A3
公开(公告)日：2008-07-10
申请号：PCT/US2007071560
申请日：2007-06-19
申请人： CISCO TECH INC , SINGH SUMEET , HUBER JOHN D , BONOMI FLAVIO
发明人： SINGH SUMEET , HUBER JOHN D , BONOMI FLAVIO
IPC分类号： H04L9/00
CPC分类号： H04L63/1416
摘要： A scalable method and apparatus that detects frequent and dispersed invariants is disclosed. More particularly, the application discloses a system that can simultaneously track frequency rates and dispersion criteria of unknown invariants, in other words, the application discloses an invariant detection system (figure 1 ) implemented in hardware (and/or software) that allows detection of invariants (e.g., byte sequences) that are highly prevalent (e.g., repeating with a high frequency) and dispersed (e.g., originating fro many sources and destined to many destinations).
摘要翻译：公开了一种检测频繁和分散的不变量的可扩展方法和装置。更具体地说，本申请公开了一种可以同时跟踪未知不变量的频率和色散标准的系统，换句话说，该应用公开了一种在硬件（和/或软件）中实现的不变量检测系统（图1），允许检测不变量（例如，字节序列），它们是非常流行的（例如，以高频率重复）并分散（例如，源自许多来源并且注定到许多目的地）。

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