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1. 发明申请

US20080089247A1 Multi-chassis emulated switch 有权
标题翻译：多机箱仿真开关
公开(公告)号：US20080089247A1
公开(公告)日：2008-04-17
申请号：US11582194
申请日：2006-10-16
申请人： Sanjay Sane , Lawrence Kreeger , Thomas Edsall , Elango Ganesan , Soei-Shin Hang , Ramana Mellacheruvu
发明人： Sanjay Sane , Lawrence Kreeger , Thomas Edsall , Elango Ganesan , Soei-Shin Hang , Ramana Mellacheruvu
IPC分类号： H04L12/28
CPC分类号： H04L12/462 , H04L45/00 , H04L45/245 , H04L45/48 , H04L45/586 , H04L47/125 , H04L49/351 , H04L49/70
摘要： A solution is provided wherein the interfaces between multiple chassis (e.g., edge switches) in a network of layer 2 devices and a spanning tree device are treated as a single emulated switch. This emulated switch effectively enables two different views to the two different sides. Thus, frames from the network of layer 2 switches destined to any port of the emulated switch may take any of the links (through any of the physical switches), thereby enabling effective load-balancing for frames traveling from the layer 2 network side into the spanning tree device. Meanwhile the spanning tree device does not recognize an illegal loop in its connection to two different edge switches as it views the two links as a single logical EtherChannel.
摘要翻译：提供了一种解决方案，其中层2设备的网络中的多个机箱（例如，边缘交换机）与生成树设备之间的接口被视为单个仿真开关。该模拟开关有效地实现了两个不同的视图。因此，去往模拟交换机的任何端口的第二层交换机的网络的帧可以采用任何链路（通过任何物理交换机），从而使得从第2层网络侧行进到帧的帧能够进行有效的负载平衡生成树设备。同时，生成树设备在将两个链路视为单个逻辑以太通道时，不识别其连接到两个不同边缘交换机的非法回路。

2. 发明授权

US08531991B2 Multi-chassis emulated switch 有权
标题翻译：多机箱仿真开关
公开(公告)号：US08531991B2
公开(公告)日：2013-09-10
申请号：US11582194
申请日：2006-10-16
申请人： Sanjay Sane , Lawrence Kreeger , Thomas Edsall , Elango Ganesan , Soei-Shin Hang , Ramana Mellacheruvu
发明人： Sanjay Sane , Lawrence Kreeger , Thomas Edsall , Elango Ganesan , Soei-Shin Hang , Ramana Mellacheruvu
IPC分类号： H04L12/28 , H04L12/413 , G01R31/08
CPC分类号： H04L12/462 , H04L45/00 , H04L45/245 , H04L45/48 , H04L45/586 , H04L47/125 , H04L49/351 , H04L49/70
摘要： A solution is provided wherein the interfaces between multiple chassis (e.g., edge switches) in a network of layer 2 devices and a spanning tree device are treated as a single emulated switch. This emulated switch effectively enables two different views to the two different sides. Thus, frames from the network of layer 2 switches destined to any port of the emulated switch may take any of the links (through any of the physical switches), thereby enabling effective load-balancing for frames traveling from the layer 2 network side into the spanning tree device. Meanwhile the spanning tree device does not recognize an illegal loop in its connection to two different edge switches as it views the two links as a single logical EtherChannel.
摘要翻译：提供了一种解决方案，其中层2设备的网络中的多个机箱（例如，边缘交换机）与生成树设备之间的接口被视为单个仿真开关。该模拟开关有效地实现了两个不同的视图。因此，去往模拟交换机的任何端口的第二层交换机的网络的帧可以采用任何链路（通过任何物理交换机），从而使得从第2层网络侧行进到帧的帧能够进行有效的负载平衡生成树设备。同时，生成树设备在将两个链路视为单个逻辑以太通道时，不识别其连接到两个不同边缘交换机的非法回路。

3. 发明授权

US07817580B2 Preventing transient loops in broadcast/multicast trees during distribution of link state information 有权
标题翻译：在分发链路状态信息期间防止广播/多播树中的瞬态环路
公开(公告)号：US07817580B2
公开(公告)日：2010-10-19
申请号：US11378990
申请日：2006-03-17
申请人： Sachin Jain , Ramana Mellacheruvu , Sanjay Sane
发明人： Sachin Jain , Ramana Mellacheruvu , Sanjay Sane
IPC分类号： H04L12/28
CPC分类号： H04L45/16 , H04L45/02 , H04L45/18 , H04L45/48 , H04L47/32
摘要： According to the present invention, methods and apparatus are provided to improve the link state routing protocol (LSRP) to prevent transient loops during topology changes. Broadcast and shared multicast traffic may be dropped on particular ports upon detecting link state change until neighboring nodes have computed routes using updated link state information. An acknowledgment is sent upon receiving a link state record. Sync and sync-ack packets are used to determine when link state information is synchronized with that of peer nodes.
摘要翻译：根据本发明，提供了用于改善链路状态路由协议（LSRP）以防止拓扑变化期间的瞬时环路的方法和装置。在检测到链路状态改变之后，广播和共享多播流量可能被丢弃在特定端口上，直到相邻节点使用更新的链路状态信息来计算路由。在收到链接状态记录时发送确认。同步和同步数据包用于确定链路状态信息与对等节点的链路状态信息是否同步。

4. 发明授权

US08917732B2 Method of selectively and seamlessly segregating san traffic in I/O consolidated networks 有权
标题翻译：在I / O综合网络中选择性和无缝地隔离SAN流量的方法
公开(公告)号：US08917732B2
公开(公告)日：2014-12-23
申请号：US12551387
申请日：2009-08-31
申请人： Smitha Narayanaswamy , Ganesan Rajagopal , Sanjay Sane , Ramana Mellacheruvu , Umesh Mahajan
发明人： Smitha Narayanaswamy , Ganesan Rajagopal , Sanjay Sane , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/54 , H04L29/08 , H04L29/06
CPC分类号： H04L47/803 , H04L12/46 , H04L12/4645 , H04L63/0236 , H04L63/0876 , H04L67/1097
摘要： Methods and apparatus for segregating traffic are disclosed. In accordance with one embodiment, a traffic splitter identifies a set of links coupled to the traffic splitter, where the set of links includes two or more uplinks, wherein each of the two or more uplinks are implemented in a common physical media. The two or more uplinks include a LAN uplink coupled to a LAN and a SAN uplink coupled to a SAN. The traffic splitter prevents SAN traffic from reaching the LAN via the LAN uplink. In addition, the traffic splitter prevents LAN traffic from reaching the SAN via the SAN uplink.
摘要翻译：公开了用于隔离业务的方法和装置。根据一个实施例，业务分配器识别耦合到业务分路器的一组链路，其中该组链路包括两个或更多个上行链路，其中两个或更多个上行链路中的每一个在公共物理介质中实现。两个或更多个上行链路包括耦合到LAN的LAN上行链路和耦合到SAN的SAN上行链路。流量分配器防止SAN流量通过LAN上行链路到达LAN。此外，流量分配器防止LAN流量通过SAN上行链路到达SAN。

5. 发明申请

US20100165994A1 METHOD OF SELECTIVELY AND SEAMLESSLY SEGREGATING SAN TRAFFIC IN I/O CONSOLIDATED NETWORKS 有权
标题翻译：在I / O综合网络中选择性和无缝分隔SAN交通的方法
公开(公告)号：US20100165994A1
公开(公告)日：2010-07-01
申请号：US12551387
申请日：2009-08-31
申请人： Smitha Narayanaswamy , Ganesan Rajagopal , Sanjay Sane , Ramana Mellacheruvu , Umesh Mahajan
发明人： Smitha Narayanaswamy , Ganesan Rajagopal , Sanjay Sane , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/28 , G06F15/173
CPC分类号： H04L47/803 , H04L12/46 , H04L12/4645 , H04L63/0236 , H04L63/0876 , H04L67/1097
摘要： Methods and apparatus for segregating traffic are disclosed. In accordance with one embodiment, a traffic splitter identifies a set of links coupled to the traffic splitter, where the set of links includes two or more uplinks, wherein each of the two or more uplinks are implemented in a common physical media. The two or more uplinks include a LAN uplink coupled to a LAN and a SAN uplink coupled to a SAN. The traffic splitter prevents SAN traffic from reaching the LAN via the LAN uplink. In addition, the traffic splitter prevents LAN traffic from reaching the SAN via the SAN uplink.
摘要翻译：公开了用于隔离业务的方法和装置。根据一个实施例，业务分配器识别耦合到业务分路器的一组链路，其中该组链路包括两个或更多个上行链路，其中两个或更多个上行链路中的每一个在公共物理介质中实现。两个或更多个上行链路包括耦合到LAN的LAN上行链路和耦合到SAN的SAN上行链路。流量分配器防止SAN流量通过LAN上行链路到达LAN。此外，流量分配器防止LAN流量通过SAN上行链路到达SAN。

6. 发明申请

US20070127396A1 Preventing transient loops in broadcast/multicast trees during distribution of link state information 有权
标题翻译：在分发链路状态信息期间防止广播/多播树中的瞬态环路
公开(公告)号：US20070127396A1
公开(公告)日：2007-06-07
申请号：US11378990
申请日：2006-03-17
申请人： Sachin Jain , Ramana Mellacheruvu , Sanjay Sane
发明人： Sachin Jain , Ramana Mellacheruvu , Sanjay Sane
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/16 , H04L45/02 , H04L45/18 , H04L45/48 , H04L47/32
摘要： According to the present invention, methods and apparatus are provided to improve the link state routing protocol (LSRP) to prevent transient loops during topology changes. Broadcast and shared multicast traffic may be dropped on particular ports upon detecting link state change until neighboring nodes have computed routes using updated link state information. An acknowledgment is sent upon receiving a link state record. Sync and sync-ack packets are used to determine when link state information is synchronized with that of peer nodes.
摘要翻译：根据本发明，提供了用于改善链路状态路由协议（LSRP）以防止拓扑变化期间的瞬时环路的方法和装置。在检测到链路状态改变之后，广播和共享多播流量可能被丢弃在特定端口上，直到相邻节点使用更新的链路状态信息来计算路由。在收到链接状态记录时发送确认。同步和同步数据包用于确定链路状态信息与对等节点的链路状态信息是否同步。

7. 发明授权

US08225134B2 Logical partitioning of a physical device 有权
标题翻译：物理设备的逻辑分区
公开(公告)号：US08225134B2
公开(公告)日：2012-07-17
申请号：US11697612
申请日：2007-04-06
申请人： Ronak Desai , Ramana Mellacheruvu , Dino Farinacci , Amitkumar Patel , Umesh Mahajan
发明人： Ronak Desai , Ramana Mellacheruvu , Dino Farinacci , Amitkumar Patel , Umesh Mahajan
IPC分类号： G06F11/00
CPC分类号： H04L41/0654 , G06F11/1482 , G06F2201/815 , H04L69/32 , H04L69/40
摘要： In one embodiment, an indication of a fault condition is received relating to a first service running on a physical device in a computer network. The first service is associated with a first virtual device context defined on the physical device. Then, the first service is disabled without affecting operation of a second service on the physical device. The second service is associated with a second virtual device context defined on the physical device. In another embodiment, a first virtual device context is created on a physical device in a computer network. Then, a second virtual device context is created on the physical device. The first virtual device context may then be managed independently of the second virtual device context such that resources assigned to a virtual device context are managed without affecting management of another virtual device context.
摘要翻译：在一个实施例中，接收与在计算机网络中的物理设备上运行的第一服务有关的故障状况的指示。第一服务与在物理设备上定义的第一虚拟设备上下文相关联。然后，第一服务被禁用，而不影响物理设备上的第二服务的操作。第二服务与在物理设备上定义的第二虚拟设备上下文相关联。在另一个实施例中，在计算机网络中的物理设备上创建第一虚拟设备上下文。然后，在物理设备上创建第二虚拟设备上下文。然后可以独立于第二虚拟设备上下文管理第一虚拟设备上下文，使得分配给虚拟设备上下文的资源被管理，而不影响另一虚拟设备上下文的管理。

8. 发明申请

US20060153186A1 In-order fibre channel packet delivery 有权
标题翻译：按顺序光纤通道数据包传送
公开(公告)号：US20060153186A1
公开(公告)日：2006-07-13
申请号：US11027252
申请日：2004-12-29
申请人： Rajeev Bector , Sachin Jain , Ramana Mellacheruvu , Umesh Mahajan
发明人： Rajeev Bector , Sachin Jain , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/56
CPC分类号： H04L49/254 , H04L1/16 , H04L49/3045 , H04L49/357
摘要： Methods and apparatus are provided for improving fibre channel packet delivery. Techniques are provided for the in-order delivery of packets by blocking incoming packets associated with a port channel change at a fibre channel switch and sending flush messages onto links associated with a port channel change. Upon receiving acknowledgments for the flush messages, incoming packets are unblocked.
摘要翻译：提供了用于改善光纤通道分组传送的方法和装置。通过阻止与光纤信道交换机上的端口信道改变相关联的输入分组，并且将冲突消息发送到与端口信道改变相关联的链路上，提供了用于按顺序传送分组的技术。在接收到刷新消息的确认后，传入的数据包被解除阻塞。

9. 发明授权

US06735201B1 Efficient network multicast switching apparatus and methods 有权
公开(公告)号：US06735201B1
公开(公告)日：2004-05-11
申请号：US10238422
申请日：2002-09-10
申请人： Umesh Mahajan , Ramana Mellacheruvu , Thomas J. Edsall , Raymond Kloth
发明人： Umesh Mahajan , Ramana Mellacheruvu , Thomas J. Edsall , Raymond Kloth
IPC分类号： H04L1228
CPC分类号： H04L12/4641 , H04L12/467
摘要： Efficient switched network multicasting techniques are provided. Incoming multicast packets are processed by a central forwarding engine (CFE) in a network switch to generate forwarding indices used to make forwarding decisions for the packets based upon whether the packets are special multicast control packets or data packets. Forwarding of the special multicast control packets is determined by the switch's network management processor (NMP), while data packets are forwarded based upon conventional bridge forwarding techniques.

10. 发明申请

US20120278458A1 Logical Partitioning Of A Physical Device 有权
标题翻译：物理设备的逻辑分区
公开(公告)号：US20120278458A1
公开(公告)日：2012-11-01
申请号：US13543671
申请日：2012-07-06
申请人： Ronak Desai , Ramana Mellacheruvu , Dino Farinacci , Amitkumar Patel , Umesh Mahajan
发明人： Ronak Desai , Ramana Mellacheruvu , Dino Farinacci , Amitkumar Patel , Umesh Mahajan
IPC分类号： G06F15/177
CPC分类号： H04L41/0654 , G06F11/1482 , G06F2201/815 , H04L69/32 , H04L69/40
摘要： In one embodiment, an indication of a fault condition is received relating to a first service running on a physical device in a computer network. The first service is associated with a first virtual device context defined on the physical device. Then, the first service is disabled without affecting operation of a second service on the physical device. The second service is associated with a second virtual device context defined on the physical device. In another embodiment, a first virtual device context is created on a physical device in a computer network. Then, a second virtual device context is created on the physical device. The first virtual device context may then be managed independently of the second virtual device context such that resources assigned to a virtual device context are managed without affecting management of another virtual device context.
摘要翻译：在一个实施例中，接收与在计算机网络中的物理设备上运行的第一服务有关的故障状况的指示。第一服务与在物理设备上定义的第一虚拟设备上下文相关联。然后，第一服务被禁用，而不影响物理设备上的第二服务的操作。第二服务与在物理设备上定义的第二虚拟设备上下文相关联。在另一个实施例中，在计算机网络中的物理设备上创建第一虚拟设备上下文。然后，在物理设备上创建第二虚拟设备上下文。然后可以独立于第二虚拟设备上下文管理第一虚拟设备上下文，使得分配给虚拟设备上下文的资源被管理，而不影响另一虚拟设备上下文的管理。

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