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51. 发明申请

US20060221861A1 Multicast routing over unidirectional links 有权
标题翻译：通过单向链路进行组播路由
公开(公告)号：US20060221861A1
公开(公告)日：2006-10-05
申请号：US11118533
申请日：2005-04-29
申请人： Stefano Previdi , Dino Farinacci , Ijsbrand Wijnands
发明人： Stefano Previdi , Dino Farinacci , Ijsbrand Wijnands
IPC分类号： H04L12/28 , H04L12/56 , H04J3/26
CPC分类号： H04L12/1836 , H04L12/5692 , H04L45/00 , H04L45/16
摘要： Various systems and methods are disclosed for performing multicast routing over unidirectional links. For example, one method involves maintaining a multicast adjacency sate, which is associated with an interface that is coupled to receive messages from a network device via a unidirectional link. The multicast adjacency state identifies a network address of the network device. The method also involves sending a multicast protocol control message to the network device via a bidirectional path. The destination address of the network multicast protocol control message is the network address in the multicast adjacency state.
摘要翻译：公开了用于通过单向链路执行组播路由的各种系统和方法。例如，一种方法涉及维护多播邻接状态，其与被耦合以经由单向链路从网络设备接收消息的接口相关联。组播邻接状态标识网络设备的网络地址。该方法还涉及通过双向路径向网络设备发送组播协议控制消息。网络组播协议控制消息的目的地址是组播邻接状态的网络地址。

52. 发明申请

US20060203819A1 Small group multicast in a computer network 有权
标题翻译：计算机网络中的小组多播
公开(公告)号：US20060203819A1
公开(公告)日：2006-09-14
申请号：US11429699
申请日：2006-05-07
申请人： Dino Farinacci , Joel Bion , Alex Tweedly , Mike Shand
发明人： Dino Farinacci , Joel Bion , Alex Tweedly , Mike Shand
IPC分类号： H04L12/56
CPC分类号： H04L45/00 , H04L45/16 , H04L45/26 , H04L45/48
摘要： A data structure is stored in a memory of a router, the router located along a path between a source end station and a plurality of destination end stations in a multicast distribution tree. In response to receipt of trace packets containing a listing of network devices in the multicast distribution tree, the data structure is updated. When the source end station desires to send a multicast packet, it transmits a packet to the router. The router then writes the path information stored in the data structure into the packet. Such path information may include a tree list that specifies the arrangement of network devices along the multicast distribution tree and an address list that specifies the Internet Protocol (IP) addresses of these network devices along the multicast distribution tree. By storing the complete description of the network devices of the multicast distribution tree in the packet, routing demands on the devices along the multicast path are minimized.
摘要翻译：数据结构被存储在路由器的存储器中，路由器沿着源端站和多播分发树中的多个目的端站之间的路径定位。响应于在组播分发树中收到包含网络设备列表的跟踪包，更新数据结构。当源端站希望发送组播数据包时，会向路由器发送一个数据包。然后路由器将存储在数据结构中的路径信息写入分组。这种路径信息可以包括指定沿着多播分发树的网络设备的布置的树列表以及指定沿多播分发树的这些网络设备的因特网协议（IP）地址的地址列表。通过将组播分发树的网络设备的完整描述存储在分组中，对组播路径上的设备的路由需求最小化。

53. 发明授权

US08879429B2 Acknowledgement-based rerouting of multicast traffic 有权
标题翻译：基于确认的组播流量重新路由
公开(公告)号：US08879429B2
公开(公告)日：2014-11-04
申请号：US13430230
申请日：2012-03-26
申请人： Stefano Previdi , Dino Farinacci , Ijsbrand Wijnands , Arjen Boers
发明人： Stefano Previdi , Dino Farinacci , Ijsbrand Wijnands , Arjen Boers
IPC分类号： H04L12/28 , H04L12/56 , H04L12/18 , H04L12/701 , H04L12/761
CPC分类号： H04L45/00 , H04L12/185 , H04L12/1877 , H04L45/16
摘要： Various techniques for exchanging control messages in order to gracefully reroute multicast traffic are disclosed. For example, one method involves sending a join message for a multicast group towards a root of a new multicast tree and forwarding multicast traffic, addressed to the multicast group, on a current multicast tree until an acknowledgment corresponding to the join message is received. The new multicast tree can be identified in response to detection of a topology change within the network. Until the acknowledgment is received, multicast traffic that is received via the new multicast tree can be dropped.
摘要翻译：公开了用于交换控制消息以便正确地重新路由组播业务的各种技术。例如，一种方法包括向新的多播树的根发送一个组播组的加入消息，并在当前的多播树上转发寻址到组播组的组播流，直到接收到与加入消息对应的确认。可以响应于网络内的拓扑变化的检测来识别新的多播树。在接收到确认之前，可以删除通过新的多播树接收的组播流量。

54. 发明授权

US08755277B2 Differentiated services for unicast and multicast frames in layer 2 topologies 有权
标题翻译：第2层拓扑中的单播和多播帧的差分服务
公开(公告)号：US08755277B2
公开(公告)日：2014-06-17
申请号：US13543395
申请日：2012-07-06
申请人： Ayan Banerjee , Dino Farinacci , Raghava Sivaramu , Abhay Roy , Nair Venugopal , Sanjay Sane
发明人： Ayan Banerjee , Dino Farinacci , Raghava Sivaramu , Abhay Roy , Nair Venugopal , Sanjay Sane
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L12/4675 , H04L45/00 , H04L45/66 , H04L47/10 , H04L47/15 , H04L47/2408
摘要： In one embodiment, a method includes receiving information on layer 2 topologies at a network device in a core network, mapping one or more Virtual Local Area Networks (VLANs) to the layer 2 topologies to provide differentiated services in said layer 2 topologies, defining multiple paths for each of the layer 2 topologies, and forwarding a packet received at the network device on one of the multiple paths. An apparatus and logic for providing differentiated services in layer 2 topologies is also disclosed.
摘要翻译：在一个实施例中，一种方法包括在核心网络中的网络设备处接收关于第2层拓扑的信息，将一个或多个虚拟局域网（VLAN）映射到第2层拓扑，以在所述第2层拓扑中提供差异化服务，定义多个用于每个第二层拓扑的路径，以及在所述多个路径之一上转发在所述网络设备处接收到的分组。还公开了用于在第2层拓扑中提供差异化服务的装置和逻辑。

55. 发明授权

US08630303B2 Preventing loops in networks operating different protocols to provide loop-free topology 有权
标题翻译：防止运行不同协议的网络中的环路提供无环路拓扑
公开(公告)号：US08630303B2
公开(公告)日：2014-01-14
申请号：US12927475
申请日：2010-11-15
申请人： Tameen Khan , Ronak Desai , Dino Farinacci
发明人： Tameen Khan , Ronak Desai , Dino Farinacci
IPC分类号： H04L12/28
CPC分类号： H04L45/18 , H04L12/4633 , H04L45/02 , H04L45/52
摘要： A method and apparatus for preventing loops in a network with network devices operating a spanning tree protocol and network devices operating a link state routing protocol to prevent loops are disclosed. In one embodiment, a method includes receiving from one of the network devices operating a link state protocol, a link state routing synchronization packet at a first network device in communication with one of the network devices operating the spanning tree protocol, blocking at the first network device, boundary ports in communication with the network devices operating the spanning tree protocol, transmitting a link state routing synchronization acknowledgement packet at the first network device after the boundary ports are blocked, and performing a loop-free topology convergence process at the first network device.
摘要翻译：公开了一种用于防止具有操作生成树协议的网络设备的网络中的环路和操作链路状态路由协议以防止环路的网络设备的方法和装置。在一个实施例中，一种方法包括从操作链路状态协议的网络设备中的一个接收第一网络设备的链路状态路由同步分组，其中与运行生成树协议的网络设备之一通信，在第一网络设备，与运行生成树协议的网络设备通信的边界端口，在边界端口被阻塞之后在第一网络设备处发送链路状态路由同步确认分组，并且在第一网络设备处执行无环路拓扑收敛过程。

56. 发明申请

US20120300782A1 TRIPLE-TIER ANYCAST ADDRESSING 有权
标题翻译：三位一体的解决方案
公开(公告)号：US20120300782A1
公开(公告)日：2012-11-29
申请号：US13584546
申请日：2012-08-13
申请人： Dino Farinacci , Thomas Edsall
发明人： Dino Farinacci , Thomas Edsall
IPC分类号： H04L12/56 , H04L12/28
CPC分类号： H04L45/74 , H04L12/4633 , H04L45/00 , H04L45/58 , H04L49/351 , H04L49/552 , H04L49/604 , H04L49/70 , H04L61/103 , H04L61/6022 , H04L61/6077
摘要： In one embodiment, a solution is provided wherein redundant routers are treated as a single emulated switch. When a packet is received at a layer 2 edge switch from a host, the layer 2 edge switch may determine a switch identifier for the emulated switch using a destination anycast hardware address contained in the packet. The anycast hardware address may identify an emulated switch comprising a plurality of routers. Then a header may be added to the packet, the header including the switch identifier. Following that, the packet may be forwarded to another layer 2 switch along a shortest path from the layer 2 edge switch to the emulated switch.
摘要翻译：在一个实施例中，提供了一种解决方案，其中冗余路由器被视为单个仿真开关。当在来自主机的层2边缘交换机处接收到分组时，层2边缘交换机可以使用包含在分组中的目的地任播硬件地址来确定仿真交换机的交换机标识符。任播硬件地址可以标识包括多个路由器的仿真交换机。然后可以向分组添加报头，该报头包括交换机标识符。之后，分组可以沿着从第2层边缘交换机到仿真交换机的最短路径转发到另一层2交换机。

57. 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。

58. 发明授权

US08259720B2 Triple-tier anycast addressing 有权
标题翻译：三层Anycast寻址
公开(公告)号：US08259720B2
公开(公告)日：2012-09-04
申请号：US11670544
申请日：2007-02-02
申请人： Dino Farinacci , Thomas Edsall
发明人： Dino Farinacci , Thomas Edsall
IPC分类号： H04L12/56
CPC分类号： H04L45/74 , H04L12/4633 , H04L45/00 , H04L45/58 , H04L49/351 , H04L49/552 , H04L49/604 , H04L49/70 , H04L61/103 , H04L61/6022 , H04L61/6077
摘要： In one embodiment, a solution is provided wherein redundant routers are treated as a single emulated switch. When a packet is received at a layer 2 edge switch from a host, the layer 2 edge switch may determine a switch identifier for the emulated switch using a destination anycast hardware address contained in the packet. The anycast hardware address may identify an emulated switch comprising a plurality of routers. Then a header may be added to the packet, the header including the switch identifier. Following that, the packet may be forwarded to another layer 2 switch along a shortest path from the layer 2 edge switch to the emulated switch.
摘要翻译：在一个实施例中，提供了一种解决方案，其中冗余路由器被视为单个仿真开关。当在来自主机的层2边缘交换机处接收到分组时，层2边缘交换机可以使用包含在分组中的目的地任播硬件地址来确定仿真交换机的交换机标识符。任播硬件地址可以标识包括多个路由器的仿真交换机。然后可以向分组添加报头，该报头包括交换机标识符。之后，分组可以沿着从第2层边缘交换机到仿真交换机的最短路径转发到另一层2交换机。

59. 发明授权

US08259569B2 Differentiated services for unicast and multicast frames in layer 2 topologies 有权
标题翻译：第2层拓扑中的单播和多播帧的差分服务
公开(公告)号：US08259569B2
公开(公告)日：2012-09-04
申请号：US12283207
申请日：2008-09-09
申请人： Ayan Banerjee , Dino Farinacci , Raghava Sivaramu , Abhay Roy , Nair Venugopal , Sanjay Sane
发明人： Ayan Banerjee , Dino Farinacci , Raghava Sivaramu , Abhay Roy , Nair Venugopal , Sanjay Sane
IPC分类号： G01R31/08 , H04L12/28
CPC分类号： H04L12/4675 , H04L45/00 , H04L45/66 , H04L47/10 , H04L47/15 , H04L47/2408
摘要： In one embodiment, a method includes receiving information on layer 2 topologies at a network device in a core network, mapping one or more Virtual Local Area Networks (VLANs) to the layer 2 topologies to provide differentiated services in said layer 2 topologies, defining multiple paths for each of the layer 2 topologies, and forwarding a packet received at the network device on one of the multiple paths. An apparatus for providing differentiated services in layer 2 topologies is also disclosed.
摘要翻译：在一个实施例中，一种方法包括在核心网络中的网络设备处接收关于第2层拓扑的信息，将一个或多个虚拟局域网（VLAN）映射到第2层拓扑，以在所述第2层拓扑中提供差异化服务，定义多个用于每个第二层拓扑的路径，以及在所述多个路径之一上转发在所述网络设备处接收到的分组。还公开了一种用于在第2层拓扑中提供差异化服务的装置。

60. 发明授权

US08166205B2 Overlay transport virtualization 有权
标题翻译：覆盖传输虚拟化
公开(公告)号：US08166205B2
公开(公告)日：2012-04-24
申请号：US11888077
申请日：2007-07-31
申请人： Dino Farinacci , Tony Speakman , Nair Venugopal , Hasmit Grover , Victor Moreno , Dhananjaya Rao
发明人： Dino Farinacci , Tony Speakman , Nair Venugopal , Hasmit Grover , Victor Moreno , Dhananjaya Rao
IPC分类号： G06F15/16
CPC分类号： H04L12/4641 , H04L29/12028 , H04L29/12839 , H04L61/103 , H04L61/106 , H04L61/6022
摘要： In one embodiment, an apparatus includes one or more internal interfaces in communication with one or more network devices in a first network site through a Layer 2 link, an overlay interface in communication through a Layer 3 link with a core network connected to one or more other network sites, and a table mapping addresses for network devices in the other network sites to addresses of edge devices in the same network site as the network device. The apparatus further includes a processor operable to encapsulate a packet received at one of the internal interfaces and destined for one of the network devices in the other network sites, with an IP header including a destination address of the edge device mapped to the destination network device, and forward the encapsulated packet to the core network.
摘要翻译：在一个实施例中，设备包括通过第2层链路与第一网络站点中的一个或多个网络设备通信的一个或多个内部接口，通过与连接到一个或多个网络的核心网络的第3层链路通信的覆盖接口其他网络站点，以及将其他网络站点中的网络设备的地址映射到与网络设备相同的网络站点中的边缘设备的地址。该装置还包括处理器，其可操作以封装在其中一个内部接口处接收的分组，并发往另一个网络中的网络设备之一，其中包括映射到目的地网络设备的边缘设备的目的地地址的IP报头，并将封装的数据包转发到核心网络。

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