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1. 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。

2. 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。

3. 发明授权

US08949662B2 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：US08949662B2
公开(公告)日：2015-02-03
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： G06F11/00 , H04L12/24 , G06F11/14 , H04L29/14 , H04L29/08
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。

4. 发明授权

US07801061B2 Seamless spanning tree upgrade of a linecard 有权
标题翻译：线卡的无缝生成树升级
公开(公告)号：US07801061B2
公开(公告)日：2010-09-21
申请号：US11329863
申请日：2006-01-10
申请人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
发明人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/28
CPC分类号： H04L12/4625 , H04L45/18 , H04L45/563
摘要： Disclosed are methods and apparatus for restarting a first network device having a plurality of ports for receiving and transmitting layer 2 data. The first network device belongs to a network of network devices. When a restart of at least a portion of the first network device is imminent whereby the restarting network device portion can no longer alter a spanning tree protocol (STP) state of one or more of the ports and such ports that remain in a fixed state during the restart are referred to as restarting ports, a current state (such as forwarding) of each restarting port is maintained during the restart under predefined conditions. During the restart, each of the restarting ports of the restarting network device portion cooperate with its peer port of a second non-restarting network device that is a neighbor of the first network device so as to prevent layer 2 loops in the network.
摘要翻译：公开了用于重新启动具有用于接收和发送第二层数据的多个端口的第一网络设备的方法和装置。第一个网络设备属于网络设备网络。当第一网络设备的至少一部分的重新启动即将来临时，由此重新启动的网络设备部分不再可以改变一个或多个端口和这些端口的生成树协议（STP）状态，这些端口和这些端口在该固定状态期间保持在固定状态重新启动被称为重新启动端口，在预定义条件下重新启动期间维护每个重新启动端口的当前状态（例如转发）。在重新启动期间，重新启动网络设备部分的每个重新启动端口与作为第一网络设备的邻居的第二非重新启动网络设备的对等端口协作，以防止网络中的第二层环路。

5. 发明申请

US20070159988A1 Seamless spanning tree upgrade of a linecard 有权
标题翻译：线卡的无缝生成树升级
公开(公告)号：US20070159988A1
公开(公告)日：2007-07-12
申请号：US11329863
申请日：2006-01-10
申请人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
发明人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/28
CPC分类号： H04L12/4625 , H04L45/18 , H04L45/563
摘要： Disclosed are methods and apparatus for restarting a first network device having a plurality of ports for receiving and transmitting layer 2 data is disclosed. The first network device belongs to a network of network devices. When a restart of at least a portion of the first network device is imminent whereby the restarting network device portion can no longer alter a spanning tree protocol (STP) state of one or more of the ports and such ports that remain in a fixed state during the restart are referred to as restarting ports, a current state (such as forwarding) of each restarting port is maintained during the restart under predefined conditions. During the restart, each of the restarting ports of the restarting network device portion cooperate with its peer port of a second non-restarting network device that is a neighbor of the first network device so as to prevent layer 2 loops in the network.
摘要翻译：公开了用于重新启动具有用于接收和发送第二层数据的多个端口的第一网络设备的方法和装置。第一个网络设备属于网络设备网络。当第一网络设备的至少一部分的重新启动即将来临时，由此重新启动的网络设备部分不再可以改变一个或多个端口和这些端口的生成树协议（STP）状态，这些端口和这些端口在该固定状态期间保持在固定状态重新启动被称为重新启动端口，在预定义条件下重新启动期间维护每个重新启动端口的当前状态（例如转发）。在重新启动期间，重新启动网络设备部分的每个重新启动端口与作为第一网络设备的邻居的第二非重新启动网络设备的对等端口协作，以防止网络中的第二层环路。

6. 发明申请

US20070159987A1 Seamless spanning tree restart of a single supervisor 有权
标题翻译：单个主管的无缝生成树重启
公开(公告)号：US20070159987A1
公开(公告)日：2007-07-12
申请号：US11329681
申请日：2006-01-10
申请人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
发明人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/28
CPC分类号： H04L45/18 , H04L45/00 , H04L45/02 , H04L45/48 , H04L49/552 , H04L49/65
摘要： Disclosed are methods and apparatus for restarting a first network device having a plurality of ports for receiving and transmitting layer 2 data is disclosed. The first network device belongs to a network of network devices. When a restart of at least a portion of the first network device is imminent whereby STP is no longer functioning for the first network device during the restart and can no longer alter a spanning tree protocol (STP) state of one or more of the ports and such ports that remain in a fixed state during the restart are referred to as restarting ports, a current state (such as forwarding) of each restarting port is maintained during the restart under predefined conditions. During the restart, each of the restarting ports of the restarting network device portion cooperate with its peer port of a second non-restarting network device that is a neighbor of the first network device so as to prevent layer 2 loops in the network.
摘要翻译：公开了用于重新启动具有用于接收和发送第二层数据的多个端口的第一网络设备的方法和装置。第一个网络设备属于网络设备网络。当第一网络设备的至少一部分的重新启动迫在眉睫，由此在重新启动期间STP不再对第一网络设备起作用，并且不能再改变一个或多个端口的生成树协议（STP）状态，并且在重新启动期间保持在固定状态的端口被称为重新启动端口，在预定义条件下在重新启动期间维护每个重新启动端口的当前状态（例如转发）。在重新启动期间，重新启动网络设备部分的每个重新启动端口与作为第一网络设备的邻居的第二非重新启动网络设备的对等端口协作，以防止网络中的第二层环路。

7. 发明授权

US07756066B2 Seamless spanning tree restart of a single supervisor 有权
标题翻译：单个主管的无缝生成树重启
公开(公告)号：US07756066B2
公开(公告)日：2010-07-13
申请号：US11329681
申请日：2006-01-10
申请人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
发明人： Tameen Khan , Amitkumar Patel , Ronak Desai , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： H04L12/28
CPC分类号： H04L45/18 , H04L45/00 , H04L45/02 , H04L45/48 , H04L49/552 , H04L49/65
摘要： Disclosed are methods and apparatus for restarting a first network device having a plurality of ports for receiving and transmitting layer 2 data. The first network device belongs to a network of network devices. When a restart of at least a portion of the first network device is imminent whereby STP is no longer functioning for the first network device during the restart and can no longer alter a spanning tree protocol (STP) state of one or more of the ports and such ports that remain in a fixed state during the restart are referred to as restarting ports, a current state (such as forwarding) of each restarting port is maintained during the restart under predefined conditions. During the restart, each of the restarting ports of the restarting network device portion cooperate with its peer port of a second non-restarting network device that is a neighbor of the first network device so as to prevent layer 2 loops in the network.
摘要翻译：公开了用于重新启动具有用于接收和发送第二层数据的多个端口的第一网络设备的方法和装置。第一个网络设备属于网络设备网络。当第一网络设备的至少一部分的重新启动迫在眉睫，由此在重新启动期间STP不再对第一网络设备起作用，并且不能再改变一个或多个端口的生成树协议（STP）状态，并且在重新启动期间保持在固定状态的端口被称为重新启动端口，在预定义条件下在重新启动期间维护每个重新启动端口的当前状态（例如转发）。在重新启动期间，重新启动网络设备部分的每个重新启动端口与作为第一网络设备的邻居的第二非重新启动网络设备的对等端口协作，以防止网络中的第二层环路。

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. 发明授权

US07599284B1 Restartable spanning tree for high availability network systems 有权
标题翻译：用于高可用性网络系统的可重新生成树
公开(公告)号：US07599284B1
公开(公告)日：2009-10-06
申请号：US11130286
申请日：2005-05-16
申请人： Marco Di Benedetto , Ramana Mellacheruvu , Umesh Mahajan
发明人： Marco Di Benedetto , Ramana Mellacheruvu , Umesh Mahajan
IPC分类号： G01R31/08 , H04L12/28 , G06F15/177
CPC分类号： H04L45/00 , H04L41/00 , H04L45/48 , H04L45/586
摘要： A method and apparatus for continuing the operation of a spanning tree protocol at a network device despite crashes or failures at that device is disclosed. The network device includes a plurality of line cards having ports for receiving and forwarding messages and a plurality of supervisor cards for processing at least some of those messages. Upon start-up, one of the supervisor cards is designated the active supervisor, while all other supervisor cards are designated standby supervisors. The active supervisor runs the spanning tree protocol (STP). The active supervisor informs the standby supervisors of the states of ports set by the STP. When a crash or failure occurs at the active supervisor, one of the standby supervisors is immediately designated to be the new active supervisor, and the new active supervisor uses the states of ports set by the original STP.
摘要翻译：一种用于在网络设备上继续执行生成树协议的方法和装置，尽管公开了该设备上的故障或故障。网络设备包括具有用于接收和转发消息的端口的多个线路卡和用于处理这些消息中的至少一些的多个管理卡。启动时，其中一个主管卡被指定为主管，而所有其他主管卡都被指定为备用主管。活动主管运行生成树协议（STP）。主动主管向备用主管通知STP设置的端口状态。当主动管理员发生故障或故障时，其中一个备用主管立即被指定为新的主动管理员，新的主管主管使用原始STP设置的端口状态。

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