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1. 发明授权

US07644179B1 Inter-VSAN routing with NAT 有权
标题翻译：具有NAT的VSAN间路由
公开(公告)号：US07644179B1
公开(公告)日：2010-01-05
申请号：US11292684
申请日：2005-12-01
申请人： Ankur Jain , Thomas J. Edsall , Subrata Banerjee , Vinay Gaonkar , Madhava Rao Cheethirala , Badrinarayanan Ramaswamy
发明人： Ankur Jain , Thomas J. Edsall , Subrata Banerjee , Vinay Gaonkar , Madhava Rao Cheethirala , Badrinarayanan Ramaswamy
IPC分类号： G06F15/173 , G06F15/177 , G06F15/16 , H04L12/28
CPC分类号： H04L61/2535 , H04L29/12424 , H04L29/12886 , H04L61/6045 , H04L67/1097
摘要： Disclosed are apparatus and methods for facilitating communication between two devices from two different VSANs by propagating each device's presence from a first VSAN to the other device's different VSAN using a network address translation (NAT) mechanism. For instance, a first device, such as a host H1, from VSAN_A is allowed to access data from a second device, such as disk D1, of VSAN_B by propagating D1's presence into VSAN_A and H1's presence into VSAN_B. This awareness is accomplished by propagating an identifier for each device into the edge VSAN of the other device, as well as into any transit VSAN. So as to not duplicate identifiers in any one of the VSANs, a device's presence is propagated into a particular VSAN by assigning an unused domain for use by such device in the particular VSAN.
摘要翻译：公开了通过使用网络地址转换（NAT）机制将每个设备的存在从第一VSAN传播到另一设备的不同VSAN来促进来自两个不同VSAN的两个设备之间的通信的装置和方法。例如，允许来自VSAN_A的第一设备，例如主机H1，通过将D1的存在传播到VSAN_A和H1存在于VSAN_B中来访问来自VSAN_B的第二设备（例如盘D1）的数据。该感知通过将每个设备的标识符传播到另一设备的边缘VSAN以及任何传输VSAN来实现。为了不在任何一个VSAN中重复标识符，设备的存在通过分配一个未使用的域来传播到特定的VSAN中，供特定VSAN中的这种设备使用。

2. 发明授权

US07519062B1 Method and apparatus for implementing forwarding decision shortcuts at a network switch 有权
标题翻译：在网络交换机上实现转发决策快捷方式的方法和装置
公开(公告)号：US07519062B1
公开(公告)日：2009-04-14
申请号：US10999823
申请日：2004-11-30
申请人： Ray Kloth , Thomas J. Edsall , Luca Cafiero
发明人： Ray Kloth , Thomas J. Edsall , Luca Cafiero
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L49/602 , H04L49/251 , H04L49/354
摘要： In one embodiment, a first packet is forwarded based on a network layer routing decision rendered by a router. A shortcut entry is generated based on a first header of the first packet. The shortcut entry is stored. In response to the shortcut entry, and absent a network layer routing decision rendered by a router, subsequent packets having a subsequent header are forwarded if the subsequent header has at least one field which matches a field of the first header. Such technique may be implemented by a switch coupled to the router.
摘要翻译：在一个实施例中，基于由路由器呈现的网络层路由决定来转发第一分组。基于第一分组的第一报头生成快捷条目。快捷方式条目被存储。响应于快捷项，并且缺少由路由器呈现的网络层路由决定，如果随后的报头具有与第一报头的字段匹配的至少一个字段，则转发具有后续报头的后续分组。这种技术可以通过耦合到路由器的交换机来实现。

3. 发明授权

US07437507B2 Online restriping technique for distributed network based virtualization 有权
标题翻译：基于分布式网络的虚拟化的在线重新分配技术
公开(公告)号：US07437507B2
公开(公告)日：2008-10-14
申请号：US11146457
申请日：2005-06-06
申请人： Samar Sharma , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan , Thomas J. Edsall
发明人： Samar Sharma , Dinesh Dutt , Sanjaya Kumar , Umesh Mahajan , Thomas J. Edsall
IPC分类号： G06F12/00
CPC分类号： G06F3/0632 , G06F3/0617 , G06F3/067
摘要： A technique is provided for implementing online restriping of a volume in a storage area network. A first instance of the volume is instantiated at a first port of the fibre channel fabric for enabling I/O operations to be performed at the volume. While restriping operations are being performed at the volume, the first port is able to concurrently perform I/O operations at the volume.
摘要翻译：提供了一种用于实现存储区域网络中的卷的在线重新排列的技术。该卷的第一个实例在光纤通道结构的第一个端口处被实例化，以便在卷上执行I / O操作。当卷上执行重新启动操作时，第一个端口能够同时在卷上执行I / O操作。

4. 发明授权

US06950400B1 Method and apparatus for performing high-speed traffic shaping 失效
标题翻译：用于执行高速流量整形的方法和装置
公开(公告)号：US06950400B1
公开(公告)日：2005-09-27
申请号：US09879553
申请日：2001-06-12
申请人： Christina H. Tran , Daniel R. Ullum , Yichou Lin , Yan-ming Chen , Silvano Gai , Thomas J. Edsall
发明人： Christina H. Tran , Daniel R. Ullum , Yichou Lin , Yan-ming Chen , Silvano Gai , Thomas J. Edsall
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L47/10 , H04L47/22
摘要： A network traffic shaper provides high-speed, multi-level shaping. The traffic shaper is in communicating relationship with a forwarding engine, and includes a queue controller having a plurality of queues for storing messages, a scheduler for computing release times, at least one time-searchable memory and a corresponding memory controller. Each queue is preferably associated with a corresponding traffic specifier, and a release time is computed for each queue and stored in the time-searchable memory. When a stored release time expires, the message at the head of the corresponding queue is retrieved and is either moved into a different queue or forwarded by the network device. By moving messages through two or more queues, each having its own release time computed in response to a different traffic specifier, the traffic shaper can perform multi-level shaping on network messages.
摘要翻译：网络流量整形器提供高速，多层次的整形。流量整形器与转发引擎处于通信关系中，并且包括具有用于存储消息的多个队列的队列控制器，用于计算释放时间的调度器，至少一个时间可搜索存储器和相应的存储器控制器。每个队列优选地与对应的流量指示符相关联，并且为每个队列计算释放时间并将其存储在时间可搜索的存储器中。当存储的释放时间到期时，检索相应队列头部的消息，并将其移动到不同的队列中或由网络设备转发。通过将消息移动到两个或更多个队列中，每个队列具有响应于不同流量指示符计算的其自己的释放时间，流量整形器可以对网络消息执行多级整形。

5. 发明授权

US06807172B1 Method and apparatus for learning and switching frames in a distributed network switch 有权
标题翻译：分布式网络交换机学习和切换帧的方法和装置
公开(公告)号：US06807172B1
公开(公告)日：2004-10-19
申请号：US09469459
申请日：1999-12-21
申请人： Herman Levenson , Jonathan Davar , Ajit Sanzgiri , Thomas J. Edsall , Chingwei Chang , Rong-Lung Lue , Saravanakumar Rajendran , Tuan Thanh Nguyen , Claudette Lucille Surma
发明人： Herman Levenson , Jonathan Davar , Ajit Sanzgiri , Thomas J. Edsall , Chingwei Chang , Rong-Lung Lue , Saravanakumar Rajendran , Tuan Thanh Nguyen , Claudette Lucille Surma
IPC分类号： H04L1228
CPC分类号： H04L49/3009 , H04L49/101 , H04L49/30 , H04L49/351 , H04L49/354 , H04L49/40
摘要： A technique enables learning and switching of frames between line cards that are interconnected by a switch fabric of a distributed network switch. The network switch comprises a router and a plurality of forwarding engines, each having an associated forwarding table. The distributed learning and switching technique configures (i) the router to issue an extra copy of a routed frame to an ingress card having a port attached to the source of the frame; (ii) the router to ensure that the contents of a source index field of the routed frame header indicate that the frame originated from the ingress card; (iii) the router to assert a shortcut bit in the header of the routed frame; (iv) a forwarding engine on an egress card having a port attached to the destination of the frame to generate and issue a media access control notification frame to the ingress card and (v) a forwarding engine on the ingress card to mark an established entry in a layer 2 (L2) portion of its forwarding table as ineligible for normal L2 aging policies.
摘要翻译：一种技术能够在由分布式网络交换机的交换结构互连的线路卡之间学习和切换帧。网络交换机包括路由器和多个转发引擎，每个转发引擎具有相关联的转发表。分布式学习和切换技术配置（i）路由器向已经连接到帧的源的端口的入口卡发布路由帧的额外副本; （ii）路由器，以确保路由帧头的源索引字段的内容指示帧来自入口卡; （iii）路由器在路由帧的头部中断言快捷位; （iv）在出口卡上的转发引擎，其具有连接到帧的目的地的端口，以生成并向入口卡发布媒体访问控制通知帧，以及（v）在入口卡上的转发引擎来标记已建立的条目在其转发表的第2层（L2）部分不符合正常的L2老化策略。

6. 发明授权

US6147993A Method and apparatus for implementing forwarding decision shortcuts at a network switch 失效
标题翻译：在网络交换机上实现转发决策快捷方式的方法和装置
公开(公告)号：US6147993A
公开(公告)日：2000-11-14
申请号：US951820
申请日：1997-10-14
申请人： Ray Kloth , Thomas J. Edsall , Luca Cafiero
发明人： Ray Kloth , Thomas J. Edsall , Luca Cafiero
IPC分类号： H04L12/56
CPC分类号： H04L49/602 , H04L49/251 , H04L49/354
摘要： A shortcut technique implements forwarding decision shortcuts at a switch for frames routed between subnetworks of a computer network. The switch monitors the flow of a first frame of a particular type to and from the router, which renders a forwarding decision for routing the frame. The switch records information stored in network layer header of a packet encapsulated within the first frame, and then compares that information with the information stored in network layer headers of packets contained within subsequent frames of that particular type. Forwarding decisions for these subsequent frames are then rendered by hardware logic circuits of the switch rather than by the router.
摘要翻译：快捷方法技术在交换机上实现了在计算机网络的子网之间路由的帧的转发决策快捷方式。交换机监视特定类型的第一帧到路由器和从路由器的流程，这使得路由帧的转发决定。交换机记录存储在第一帧中封装的分组的网络层报头中的信息，然后将该信息与存储在该特定类型的后续帧中的分组的网络层报头中存储的信息进行比较。然后，这些后续帧的转发决定由交换机的硬件逻辑电路而不是由路由器呈现。

7. 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。

8. 发明授权

US06831898B1 Multiple packet paths to improve reliability in an IP network 失效
标题翻译：多个分组路径，以提高IP网络的可靠性
公开(公告)号：US06831898B1
公开(公告)日：2004-12-14
申请号：US09593566
申请日：2000-08-16
申请人： Thomas J. Edsall , Silvano Gai , Soei-Shin Hang
发明人： Thomas J. Edsall , Silvano Gai , Soei-Shin Hang
IPC分类号： H04L1228
CPC分类号： H04L47/34 , H04L45/00 , H04L45/16 , H04L45/24 , H04L45/28 , H04L47/2416
摘要： The invention replicates a packet requiring high availability and transmits it from two or more ports of a switch, for example a wiring closet Layer 2 switch. The parent packet carries a unique sequence number. The copies of the packet each carry the parent packet's unique sequence number. Each copy of the packet then travels on separate pathways through routers (Layer 3 network devices). The pathways are maintained separate by assigning high costs in a LSP routing sense to links connecting the two paths, and by assigning low costs to links along the desired paths. The two identical packets converge on the destination station. The destination station accepts the first packet with a particular sequence number, and discards any later packets with the same sequence number. In the event that a link in one path has a catastrophic failure, then the packet travelling along the other path reaches the destination station and service remains operative without interruption. The lost path is then recomputed by the a router (if any) still receiving the lost packet. A new non-converging path may be selected if any are available, depending upon the topology. After the disruption is repaired, the original dual pathways may once again be established.
摘要翻译：本发明复制了需要高可用性的分组，并将其从交换机的两个或更多个端口（例如配线柜第2层交换机）发送。父包携带唯一的序列号。分组的副本每个携带父分组的唯一序列号。然后，数据包的每个副本通过路由器（第3层网络设备）在不同的路径上传播。通过将LSP路由意义中的高成本分配给连接两个路径的链路以及通过沿着期望路径为链路分配低成本来维持路径。两个相同的数据包收敛在目的站。目的站接收具有特定序列号的第一个分组，并丢弃具有相同序列号的任何后续分组。在一条路径中的链路发生灾难性故障的情况下，沿着另一路径行进的分组到达目的站，并且服务保持无间断的运行。丢失的路径然后被路由器（如果有的话）重新计算，仍然收到丢失的数据包。根据拓扑结构，可以选择新的非会聚路径（如果有）。破坏后修复，原来的双重路径可能再次成立。

9. 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。

10. 发明授权

US06741592B1 Private VLANs 有权
标题翻译：私有VLAN
公开(公告)号：US06741592B1
公开(公告)日：2004-05-25
申请号：US09575774
申请日：2000-05-22
申请人： Thomas J. Edsall , Marco Foschiano , Michael Fine , Thomas Nosella
发明人： Thomas J. Edsall , Marco Foschiano , Michael Fine , Thomas Nosella
IPC分类号： G06F15173
CPC分类号： H04L12/4641
摘要： The invention uses a layer 2 switch (L2 switch), or bridge, to separate user's message traffic by use of Virtual Local Area Networks (VLANs) defined within the switch. Three new types of ports are defined, “promiscuous” ports “isolated” ports, and “community” ports. Three types of VLANs internal to the switch are defined, “primary” VLANs, “isolated” VLANs and “community” VLANs. The promiscuous ports are connected to layer 3 or layer 4 devices. Isolated ports and community ports are connected to individual user's servers, etc., and maintain traffic for each user separate from other users. The primary VLAN connects to all promiscuous ports, to all isolated ports, and to all community ports. The primary VLAN is a one way connection from promiscuous ports to isolated or community ports. An isolated VLAN connects to all promiscuous ports and to all isolated ports. The isolated VLAN is a one way connection from an isolated port to the promiscuous ports. A community VLAN is defined as connecting to a group of community ports, and also connecting to all of the promiscuous ports. The group of community ports is referred to as a “community” of community ports. A community VLAN is a one way connection from a community of ports to the promiscuous ports, but allows a packet received by one community port to be transmitted out of the switch, through the other community ports connected to that community VLAN.
摘要翻译：本发明使用第2层交换机（L2交换机）或桥接器来通过使用在交换机内定义的虚拟局域网（VLAN）来分离用户的消息业务。定义了三种新类型的端口，“混杂”端口“隔离”端口和“社区”端口。交换机内部的三种VLAN定义为“主”VLAN，“隔离”VLAN和“社区”VLAN。混杂端口连接到第3层或第4层设备。隔离的端口和社区端口连接到个人用户的服务器等，并保持每个用户与其他用户分开的流量。主VLAN连接到所有混杂端口，所有隔离端口和所有社区端口。主VLAN是从混杂端口到隔离或社区端口的单向连接。隔离VLAN连接到所有混杂端口和所有隔离端口。隔离VLAN是从隔离端口到混杂端口的单向连接。社区VLAN被定义为连接到一组社区端口，并且还连接到所有混杂端口。社区港口群体被称为社区港口的“社区”。社区VLAN是从端口群组到混杂端口的单向连接，但允许通过连接到该社区VLAN的其他社区端口将一个社区端口接收的数据包从交换机传输出去。

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