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1. 发明授权

US08170025B2 Switch port analyzers 有权
标题翻译：切换端口分析仪
公开(公告)号：US08170025B2
公开(公告)日：2012-05-01
申请号：US12324703
申请日：2008-11-26
申请人： Raymond J. Kloth , Thomas James Edsall , Kalyan K. Ghosh , Gaurav Rastogi , Dinesh Ganapathy Dutt , Matthew Cressa
发明人： Raymond J. Kloth , Thomas James Edsall , Kalyan K. Ghosh , Gaurav Rastogi , Dinesh Ganapathy Dutt , Matthew Cressa
IPC分类号： H04L12/28
CPC分类号： H04L43/00 , H04L43/18 , H04L49/357 , H04L49/555 , H04L2212/00
摘要： Methods and devices are provided for non-disruptive monitoring of network traffic through one or more ports of a Fibre Channel network device. Preferred embodiments of the invention are used in conjunction with the switched port analyzer (“SPAN”) and/or remote SPAN (“RSPAN”) features. SPAN mode operation allows traffic through any Fibre Channel interface of a network device to be replicated and delivered to a single port on the same network device. Ingress SPAN allows the monitoring of some or all packets that ingress a specified port or ports. Egress SPAN allows the monitoring of some or all packets that egress a specified port or ports. RSPAN allows the delivery of the replicated traffic to a port on a remote network device. Filtering may be applied, for example, to SPAN packets having selected virtual storage area network numbers.
摘要翻译：提供了方法和设备，用于通过光纤通道网络设备的一个或多个端口对网络流量进行非中断监控。本发明的优选实施例与交换端口分析器（“SPAN”）和/或远程SPAN（“RSPAN”）特征结合使用。 SPAN模式操作允许通过网络设备的任何光纤通道接口的流量被复制并传送到同一网络设备上的单个端口。 Ingress SPAN允许监视进入指定端口的某些或所有数据包。出口SPAN允许监视某些或所有出口指定端口或端口的数据包。 RSPAN允许将复制的流量传送到远程网络设备上的端口。例如，可以将过滤应用于具有选择的虚拟存储区域网络号的SPAN分组。

2. 发明授权

US07324441B1 Methods and apparatus for alleviating deadlock in a fibre channel network 有权
标题翻译：减轻光纤通道网络死锁的方法和装置
公开(公告)号：US07324441B1
公开(公告)日：2008-01-29
申请号：US10620301
申请日：2003-07-14
申请人： Raymond J. Kloth , Maurilio Cometto
发明人： Raymond J. Kloth , Maurilio Cometto
IPC分类号： H04J1/16 , H04J3/14
CPC分类号： H04L47/10 , H04L47/39
摘要： Methods and apparatus are provided for alleviating deadlock and controlling congestion in a network such as a fibre channel network. Techniques are provided for detecting stalled frames at a fibre channel switch. Reserve credits are released when stalled frames are detected. In some instances, reserve credits are released after a predetermined period of time. Reserve credits allow transmission to effectively reduce deadlock and congestion. Reserve credits are particularly effective in reducing deadlock resulting from transient loops in a fibre channel network.
摘要翻译：提供了用于减轻诸如光纤通道网络的网络中的死锁和控制拥塞的方法和装置。提供技术用于在光纤通道开关处检测失速的帧。当检测到停滞的帧时，预留积分被释放。在某些情况下，在预定时间段之后释放储备金。储备信用允许传输有效地减少死锁和拥塞。储备信用在减少由光纤通道网络中的瞬态环路引起的死锁时特别有效。

3. 发明授权

US07474666B2 Switch port analyzers 有权
标题翻译：切换端口分析仪
公开(公告)号：US07474666B2
公开(公告)日：2009-01-06
申请号：US10655452
申请日：2003-09-03
申请人： Raymond J. Kloth , Thomas James Edsall , Kalyan K. Ghosh , Gaurav Rastogi , Dinesh Ganapathy Dutt , Matthew Cressa
发明人： Raymond J. Kloth , Thomas James Edsall , Kalyan K. Ghosh , Gaurav Rastogi , Dinesh Ganapathy Dutt , Matthew Cressa
IPC分类号： H04L12/28
CPC分类号： H04L43/00 , H04L43/18 , H04L49/357 , H04L49/555 , H04L2212/00
摘要： Methods and devices are provided for non-disruptive monitoring of network traffic through one or more ports of a Fibre Channel network device. Preferred embodiments of the invention are used in conjunction with the switched port analyzer (“SPAN”) and/or remote SPAN (“RSPAN”) features. SPAN mode operation allows traffic through any Fibre Channel interface of a network device to be replicated and delivered to a single port on the same network device. Ingress SPAN allows the monitoring of some or all packets that ingress a specified port or ports. Egress SPAN allows the monitoring of some or all packets that egress a specified port or ports. RSPAN allows the delivery of the replicated traffic to a port on a remote network device. Filtering may be applied, for example, to SPAN packets having selected virtual storage area network numbers.
摘要翻译：提供了方法和设备，用于通过光纤通道网络设备的一个或多个端口对网络流量进行非中断监控。本发明的优选实施例与交换端口分析器（“SPAN”）和/或远程SPAN（“RSPAN”）特征结合使用。 SPAN模式操作允许通过网络设备的任何光纤通道接口的流量被复制并传送到同一网络设备上的单个端口。 Ingress SPAN允许监视进入指定端口的某些或所有数据包。出口SPAN允许监视某些或所有出口指定端口或端口的数据包。 RSPAN允许将复制的流量传送到远程网络设备上的端口。例如，可以将过滤应用于具有选择的虚拟存储区域网络号的SPAN分组。

4. 发明授权

US06868065B1 Method and apparatus for implementing a quality of service policy in a data communications network 失效
标题翻译：用于在数据通信网络中实现服务质量策略的方法和装置
公开(公告)号：US06868065B1
公开(公告)日：2005-03-15
申请号：US10391683
申请日：2003-03-18
申请人： Raymond J. Kloth , Thomas J. Edsall , Michael Fine , Dinesh G. Dutt
发明人： Raymond J. Kloth , Thomas J. Edsall , Michael Fine , Dinesh G. Dutt
IPC分类号： H04L12/56 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04L12/28
CPC分类号： H04L47/41 , H04L45/7453 , H04L47/10 , H04L47/215 , H04L47/2408 , H04L47/2416 , H04L47/2441 , H04L47/30 , H04L47/32 , Y02D50/30
摘要： A method and apparatus for implementing Quality of Service (QoS) policy in a data communications network. An active flow content addressable memory (CAM) contains entries of flow information for each active flow of packets passing through a given node of the data communications network. The CAM has associated with each entry a packet counter, a byte counter, a token bucket, and a contract value. Each flow is assigned one of a plurality of output queues and optionally at least one output threshold value. A token bucket algorithm is employed on each flow to determine whether packets from that flow exceed the contract value. Such packets may be dropped or optimally modified to reflect an alternate output queue and/or alternate threshold before being sent to the selected output queue for transmission from the node.
摘要翻译：一种用于在数据通信网络中实现服务质量（QoS）策略的方法和装置。活动流内容可寻址存储器（CAM）包含通过数据通信网络的给定节点的每个活动流的流的信息条目。 CAM与每个条目相关联，分组计数器，字节计数器，令牌桶和合同值。每个流被分配多个输出队列中的一个和可选的至少一个输出阈值。在每个流中使用令牌桶算法来确定来自该流的分组是否超过了合同值。在发送到所选择的输出队列以便从节点传输之前，可以丢弃或最佳地修改这样的分组以反映替代输出队列和/或替代阈值。

5. 发明授权

US06798746B1 Method and apparatus for implementing a quality of service policy in a data communications network 有权
标题翻译：用于在数据通信网络中实现服务质量策略的方法和装置
公开(公告)号：US06798746B1
公开(公告)日：2004-09-28
申请号：US10156971
申请日：2002-05-28
申请人： Raymond J. Kloth , Thomas J. Edsall , Michael Fine , Dinesh G. Dutt
发明人： Raymond J. Kloth , Thomas J. Edsall , Michael Fine , Dinesh G. Dutt
IPC分类号： G01R3108
CPC分类号： H04L47/32 , H04L47/10 , H04L47/20 , H04L47/215 , H04L47/24 , H04L47/2441 , H04L47/29 , H04L49/90
摘要： A content addressable memory (CAM or L3 Table) contains flow information for each active flow of packets passing through a given node of a data communications network. The CAM has associated with each entry (corresponding to each active flow) a packet counter, a byte counter, a token bucket and a contract value. Each flow is assigned one of a plurality of output queues and optionally at least one output threshold value. A token bucket algorithm is employed on each flow to determine whether packets from that flow exceed the contract value. Such packets may be dropped or optimally modified to reflect an alternate output queue and/or alternate threshold before being sent to the selected output queue for transmission from the node. In another aspect an access control list CAM (ACLCAM) contains masked flow information. The ACLCAM provides an index to internal token bucket counters and preconfigured contract values of an aggregate flow table which becomes affected by the packet statistics. In this way flows are aggregated for assignment of output queues and thresholds, possible dropping and possible modification of packets. In another aspect the CAM contains active flow information, the ACLCAM and the aggregate flow table are combined in one system and used to produce in parallel a pair of traffic rate limiting and prioritizing decisions for each packet. The two results are then resolved to yield a single result.
摘要翻译：内容可寻址存储器（CAM或L3表）包含通过数据通信网络的给定节点的分组的每个活动流的流信息。 CAM与分组计数器，字节计数器，令牌桶和合同值的每个条目（对应于每个活动流）相关联。每个流被分配多个输出队列中的一个和可选的至少一个输出阈值。在每个流中使用令牌桶算法来确定来自该流的分组是否超过了合同值。在发送到所选择的输出队列以便从节点传输之前，可以丢弃或最佳地修改这样的分组以反映替代输出队列和/或替代阈值。在另一方面，访问控制列表CAM（ACLCAM）包含被屏蔽的流信息。 ACLCAM为内部令牌桶计数器提供索引，并为分组统计信息影响的聚合流表的预配置合同值。以这种方式，聚合流量以分配输出队列和阈值，可能丢弃和可能的修改数据包。在另一方面，CAM包括活动流信息，ACLCAM和聚合流表在一个系统中组合并且用于并行地产生一对每个分组的业务速率限制和优先级决定。然后解析两个结果以产生单个结果。

6. 发明授权

US06570877B1 Search engine for forwarding table content addressable memory 有权
标题翻译：搜索引擎转发表内容可寻址内存
公开(公告)号：US06570877B1
公开(公告)日：2003-05-27
申请号：US09287301
申请日：1999-04-07
申请人： Raymond J. Kloth , Kevin D. Morishige , Venkateshwar Rao Pullela
发明人： Raymond J. Kloth , Kevin D. Morishige , Venkateshwar Rao Pullela
IPC分类号： G06F1338
CPC分类号： H04L45/00 , H04L45/7453 , H04L49/90
摘要： A hardware search engine facility is provided to allow CPU search and update of a Forwarding Table CAM under the control of software running on the CPU. The hardware search engine provides one or more comparand-mask pairs which allow for a match, exclusion or magnitude comparison on specific entry values and/or the option to ignore or “don't care” certain bits of the entry. Control registers may be set in software to specify a start address and stop address in the CAM for the search. An indication of valid or invalid entries may be provided as well. Once the search is initiated by software, the search engine will read the entries sequentially starting from the programmed start address. It will perform a compare using the comparand-mask pair and attempt to identify a match. The locations in the CAM which match the search criteria may be put into a CPU-accessible memory. If the memory fills up before it can be read by the software, the search may be halted until the memory is emptied. A programmable action may instead, or in addition, be set to take place in the event of a match. Such programmable actions may include, but are not limited to, marking the entry, deleting the entry, change status bits corresponding to the entry, rewriting some of the entry, and the like.
摘要翻译：提供硬件搜索引擎设备，以便在CPU上运行的软件控制下CPU搜索和更新转发表CAM。硬件搜索引擎提供一个或多个比较屏蔽对，其允许对特定输入值进行匹配，排除或幅度比较和/或忽略或“不关心”条目的某些位的选项。软件中可以设置控制寄存器，以指定搜索的CAM中的起始地址和停止地址。也可以提供有效或无效的条目的指示。一旦搜索由软件启动，搜索引擎将从编程的起始地址顺序读取条目。它将使用比较掩码对执行比较，并尝试识别匹配。符合搜索条件的CAM中的位置可以放入CPU可访问的存储器中。如果在软件读取之前内存填满，则可能会停止搜索，直到内存清空为止。可以替代地或另外设置可编程动作，以在匹配的情况下进行。这样的可编程动作可以包括但不限于标记条目，删除条目，对应于条目的改变状态位，重写条目中的一些等等。

7. 发明授权

US07327744B2 Fibre channel forwarding information base 有权
标题翻译：光纤通道转发信息库
公开(公告)号：US07327744B2
公开(公告)日：2008-02-05
申请号：US11035158
申请日：2005-01-12
申请人： Pawan Agrawal , Sujatha Sundararaman , Raymond J. Kloth , Deepak Goel , Nitin Garg , Sachin Jain
发明人： Pawan Agrawal , Sujatha Sundararaman , Raymond J. Kloth , Deepak Goel , Nitin Garg , Sachin Jain
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L45/04 , H04L45/22 , H04L45/54
摘要： According to the present invention, methods and apparatus are provided to improve the techniques and mechanisms for forwarding packets at a fiber channel switch. A combined area table/domain table (ATDT) is accessed using destination information associated with a fiber channel packet. Area/port or domain information can be used to address entries in the ATDT. Each entry provides one or more paths to a given destination. Traffic shaping, load balancing, and other policy based forwarding considerations can be applied.
摘要翻译：根据本发明，提供了用于改进在光纤信道交换机处转发分组的技术和机制的方法和装置。使用与光纤信道分组相关联的目的地信息来访问组合区域表/域表（ATDT）。区域/端口或域信息可用于处理ATDT中的条目。每个条目提供到给定目的地的一条或多条路径。可以应用流量整形，负载均衡和其他基于策略的转发注意事项。

8. 发明授权

US07327680B1 Methods and apparatus for network congestion control 有权
标题翻译：网络拥塞控制的方法和装置
公开(公告)号：US07327680B1
公开(公告)日：2008-02-05
申请号：US10289090
申请日：2002-11-05
申请人： Raymond J. Kloth
发明人： Raymond J. Kloth
IPC分类号： H04L12/56
CPC分类号： H04L47/10 , H04L47/11 , H04L47/28 , H04L47/39
摘要： Methods and apparatus are provided for controlling congestion in a network such as a fiber channel network. Techniques are provided for detecting congestion at a shared resource such as a network node. When a controller sends data to a shared resource, the delay between sending the data and receiving a credit is measured. If the delay is significant, it is assumed that the path towards the destination associated with the data is congested and subsequent traffic from the port associated with the data is blocked.
摘要翻译：提供了用于控制诸如光纤通道网络的网络中的拥塞的方法和装置。提供了用于检测诸如网络节点之类的共享资源的拥塞的技术。当控制器向共享资源发送数据时，测量发送数据和接收信用之间的延迟。如果延迟很大，则假定与数据相关联的到目的地的路径拥塞，并且来自与数据相关联的端口的后续业务被阻塞。

9. 发明授权

US08266431B2 Method and apparatus for performing encryption of data at rest at a port of a network device 有权
标题翻译：用于在网络设备的端口处静止地进行数据的加密的方法和装置
公开(公告)号：US08266431B2
公开(公告)日：2012-09-11
申请号：US11264191
申请日：2005-10-31
申请人： Jonathan M. Parlan , Raymond J. Kloth , Ying Huang , Fabio R. Maino , Pawan Agrawal
发明人： Jonathan M. Parlan , Raymond J. Kloth , Ying Huang , Fabio R. Maino , Pawan Agrawal
IPC分类号： G06F21/00
CPC分类号： H04L9/0897 , H04L9/0891 , H04L9/0894 , H04L9/3247 , H04L63/0428 , H04L63/0485 , H04L2209/56 , H04L2209/80
摘要： Methods and apparatus for performing encryption for data at rest at a port of a network device such as a switch are disclosed. Specifically, when data is received from a host during a write to a storage medium such as a disk, the data is encrypted by the port prior to transmitting the encrypted data to the storage medium. Similarly, when a host attempts to read data from the storage medium, the port of the network device receives the encrypted data from the storage medium, decrypts the data, and transmits the decrypted data to the host. In this manner, encryption and decryption of data at rest are supported by the port of the network device.
摘要翻译：公开了用于在诸如交换机的网络设备的端口处静止的数据执行加密的方法和装置。具体地说，当在向诸如盘的存储介质的写入期间从主机接收到数据时，在将加密数据发送到存储介质之前，数据被端口加密。类似地，当主机尝试从存储介质读取数据时，网络设备的端口从存储介质接收加密的数据，解密数据，并将解密的数据发送到主机。以这种方式，网络设备的端口支持静止数据的加密和解密。

10. 发明授权

US08199764B2 Scalable approach to large scale queuing through dynamic resource allocation 有权
标题翻译：通过动态资源分配进行大规模排队的可扩展方法
公开(公告)号：US08199764B2
公开(公告)日：2012-06-12
申请号：US10648624
申请日：2003-08-25
申请人： Robert Hoffman , Raymond J. Kloth , Alessandro Fulli
发明人： Robert Hoffman , Raymond J. Kloth , Alessandro Fulli
IPC分类号： H04L12/56
CPC分类号： H04L49/9047 , H04L47/6215 , H04L49/30 , H04L49/3045 , H04L49/90
摘要： Methods and devices are provided for the efficient allocation and deletion of virtual output queues. According to some implementations, incoming packets are classified according to a queue in which the packet (or classification information for the packet) will be stored, e.g., according to a “Q” value. For example, a Q value may be a Q number defined as {Egress port number∥Priority number∥Ingress port number}. Only a single physical queue is allocated for each classification. When a physical queue is empty, the physical queue is preferably de-allocated and added to a “free list” of available physical queues. Accordingly, the total number of allocated physical queues preferably does not exceed the total number of classified packets. Because the input buffering requirements of Fiber Channel (“FC”) and other protocols place limitations on the number of incoming packets, the dynamic allocation methods of the present invention result in a sparse allocation of physical queues.
摘要翻译：提供了方法和设备，用于有效分配和删除虚拟输出队列。根据一些实现方式，输入分组根据其中将存储分组（或分组的分类信息）的队列进行分类，例如根据“Q”值。例如，Q值可以是定义为{出口端口号|优先级号|入口端口号}的Q号。每个分类只分配一个物理队列。当物理队列为空时，物理队列优选地被去分配并被添加到可用物理队列的“空闲列表”中。因此，分配的物理队列的总数优选地不超过分类分组的总数。由于光纤通道（“FC”）和其他协议的输入缓冲要求对输入数据包数量的限制，本发明的动态分配方法导致物理队列的稀疏分配。

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