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21. 发明授权

US07937492B1 LSP ping and traceroute for bypass tunnels 有权
标题翻译：旁路隧道的LSP ping和traceroute
公开(公告)号：US07937492B1
公开(公告)日：2011-05-03
申请号：US12241158
申请日：2008-09-30
申请人： Kireeti Kompella , Nitin Bahadur
发明人： Kireeti Kompella , Nitin Bahadur
IPC分类号： G06F15/173 , H04L12/28
CPC分类号： H04L43/0811 , H04L43/10 , H04L45/22 , H04L45/28 , H04L45/50
摘要： A method performed by a network device may include assembling a multiprotocol label switching (MPLS) echo request, the echo request including an instruction for a transit node to forward the echo request via a bypass path associated with the transit node, and an instruction for an egress node to send an echo reply indicating that the echo request was received on the bypass path. The method may also include sending the MPLS echo request over a functioning label switched path (LSP).
摘要翻译：由网络设备执行的方法可以包括组合多协议标签交换（MPLS）回波请求，所述回应请求包括用于传送节点的指令，以经由与所述传输节点相关联的旁路路径来转发所述回声请求，以及用于出口节点发送回应应答，指示在旁路路径上接收到回应请求。该方法还可以包括通过功能标签交换路径（LSP）发送MPLS回应请求。

22. 发明申请

US20100296517A1 NETWORK ROUTING USING INDIRECT NEXT HOP DATA 有权
标题翻译：使用间接下一个HOP数据的网络路由
公开(公告)号：US20100296517A1
公开(公告)日：2010-11-25
申请号：US12847735
申请日：2010-07-30
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： H04L12/56
CPC分类号： H04L45/20 , H04L12/44 , H04L12/56 , H04L45/02 , H04L45/46 , H04L45/48 , H04L45/60
摘要： A router maintains routing information including (i) route data representing destinations within a computer network, (ii) next hop data representing interfaces to neighboring network devices, and (iii) indirect next hop data that maps a subset of the routes represented by the route data to a common one of the next hop data elements. In this manner, routing information is structured such that routes having the same next hop use indirect next hop data structures to reference common next hop data. In particular, in response to a change in network topology, the router need not change all of the affected routes, but only the common next hop data referenced by the intermediate data structures. This provides for increased efficiency in updating routing information after a change in network topology, such as link failure.
摘要翻译：路由器维护路由信息，包括（i）表示计算机网络内的目的地的路由数据，（ii）表示到相邻网络设备的接口的下一跳数据，以及（iii）映射路由表示的路由的子集的间接下一跳数据数据到下一跳数据元素中的共同的一个。以这种方式，路由信息的结构使得具有相同下一跳的路由使用间接的下一跳数据结构来引用公共的下一跳数据。特别地，为了响应网络拓扑的变化，路由器不需要改变所有受影响的路由，而只能改变由中间数据结构引用的公共下一跳数据。这提高了在网络拓扑变化（如链路故障）后更新路由信息的效率。

23. 发明申请

US20100214913A1 LOAD BALANCING NETWORK TRAFFIC ON A LABEL SWITCHED PATH USING RESOURCE RESERVATION PROTOCOL WITH TRAFFIC ENGINEERING 有权
标题翻译：使用资源预留协议与交通工程的标签交换路径的负载平衡网络交通
公开(公告)号：US20100214913A1
公开(公告)日：2010-08-26
申请号：US12507200
申请日：2009-07-22
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： H04L12/56
CPC分类号： H04L47/724 , H04L45/125 , H04L45/50 , H04L45/745 , H04L47/125 , H04L47/70 , H04L47/726
摘要： Techniques are describe for establishing an overall label switched path (LSP) for load balancing network traffic being sent across a network using the a resource reservation protocol such as Resource Reservation Protocol with Traffic Engineering (RSVP-TE). The techniques include extensions to the RSVP-TE protocol that enable a router to send Path messages for establishing a tunnel that includes a plurality of sub-paths for the overall LSP. The tunnel may comprise a single RSVP-TE Label Switched Path (LSP) that is configured to load balance network traffic across different sub-paths of the RSVP-TE LSP over the network.
摘要翻译：描述了用于建立用于负载平衡网络流量的整体标签交换路径（LSP）的技术，其使用诸如具有流量工程的资源预留协议（RSVP-TE）的资源预留协议通过网络发送。这些技术包括RSVP-TE协议的扩展，使得路由器能够发送Path消息来建立包括整个LSP的多个子路径的隧道。隧道可以包括单个RSVP-TE标签交换路径（LSP），其被配置为通过网络在RSVP-TE LSP的不同子路径之间负载平衡网络流量。

24. 发明授权

US07649904B1 Seamless split-horizon flooding of layer two (L2) network traffic on non-native and mixed architectures 有权
标题翻译：在非本地和混合架构上的第二层（L2）网络流量的无缝分裂溢流
公开(公告)号：US07649904B1
公开(公告)日：2010-01-19
申请号：US12034299
申请日：2008-02-20
申请人： Kaushik Ghosh , Kireeti Kompella , Junan Chen , Raj Tuplur
发明人： Kaushik Ghosh , Kireeti Kompella , Junan Chen , Raj Tuplur
IPC分类号： H04L12/54
CPC分类号： H04L45/50 , H04L45/02 , H04L45/025
摘要： A forwarding component of a routing node floods copies of a packet to a plurality of next hops associated with the same layer two (L2) network as an interface on which the packet was received. The plurality of next hops excludes a next hop that corresponds to the interface that received the packet. The forwarding component requires that forwarding information installed by a control unit specify the plurality of next hops to which to flood the copies of the packet, and the forwarding component is not capable of deriving the plurality of next hops to which to flood the copies of the packet from a single flooding next hop identifier after the packet is received. Prior to receiving the packet, a flooding next hop control module derives the plurality of next hops based on the flooding next hop and installs the derived next hops into the forwarding information.
摘要翻译：路由节点的转发组件将分组的副本泛洪到与其接收分组的接口相关联的多个与相同的第二层（L2）网络相关联的下一跳。多个下一跳排除了对应于接收到分组的接口的下一跳。转发组件要求由控制单元安装的转发信息指定多个下一跳，洪泛化分组的副本，并且转发组件不能导出多个下一跳，洪泛的副本在接收到分组之后，来自单个洪泛下一跳标识符的分组。在接收到分组之前，洪泛的下一跳控制模块基于洪泛下一跳导出多个下一跳，并将导出的下一跳安装到转发信息中。

25. 发明申请

US20090296713A1 DECOUPLING FUNCTIONALITY RELATED TO PROVIDING A TRANSPARENT LOCAL AREA NETWORK SEGMENT SERVICE 有权
标题翻译：与提供透明的本地区域网络部门服务相关的功能解除
公开(公告)号：US20090296713A1
公开(公告)日：2009-12-03
申请号：US12541052
申请日：2009-08-13
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： H04L12/56
CPC分类号： H04L45/02 , H04L12/4633 , H04L45/08 , H04L45/66 , H04L45/74
摘要： A transport LAN segment service is provided over a transport network. Responsibilities for configuring, provisioning and forwarding over a transport LAN segment are divided between layer 2 and 3 service provider edge devices, where the layer 3 edge device handles discovery and tunneling responsibilities, the layer 2 edge device handles learning and flooding responsibilities, and information can be exchanged between the layer 2 and 3 edge devices. Configuration is simplified by advertising TLS-label information, layer 2 address learning, and flooding when the needed configuration information has not yet been learned or discovered.
摘要翻译：通过传输网络提供传输LAN段服务。通过传输LAN段配置，配置和转发的职责划分在第2层和第3层服务提供商边缘设备之间，其中第3层边缘设备处理发现和隧道职责，第2层边缘设备处理学习和洪泛责任以及信息在第2层和第3层边缘设备之间进行交换。通过在尚未学习或发现所需的配置信息时，通过广告TLS标签信息，第2层地址学习和洪泛来简化配置。

26. 发明授权

US07577143B1 Decoupling functionality related to providing a transparent local area network segment service 有权
标题翻译：解耦功能与提供透明的局域网分段服务相关
公开(公告)号：US07577143B1
公开(公告)日：2009-08-18
申请号：US10254021
申请日：2002-09-24
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： H04L12/56
CPC分类号： H04L45/02 , H04L12/4633 , H04L45/08 , H04L45/66 , H04L45/74
摘要： A transport LAN segment service is provided over a transport network. Responsibilities for configuring, provisioning and forwarding over a transport LAN segment are divided between layer 2 and 3 service provider edge devices, where the layer 3 edge device handles discovery and tunneling responsibilities, the layer 2 edge device handles learning and flooding responsibilities, and information can be exchanged between the layer 2 and 3 edge devices. Configuration is simplified by advertising TLS-label information, layer 2 address learning, and flooding when the needed configuration information has not yet been learned or discovered.
摘要翻译：通过传输网络提供传输LAN段服务。通过传输LAN段配置，配置和转发的职责划分在第2层和第3层服务提供商边缘设备之间，其中第3层边缘设备处理发现和隧道职责，第2层边缘设备处理学习和洪泛责任以及信息在第2层和第3层边缘设备之间进行交换。通过在尚未学习或发现所需的配置信息时，通过广告TLS标签信息，第2层地址学习和洪泛来简化配置。

27. 发明授权

US07447149B1 Virtual interface with active and backup physical interfaces 有权
标题翻译：具有主动和备用物理接口的虚拟接口
公开(公告)号：US07447149B1
公开(公告)日：2008-11-04
申请号：US10952457
申请日：2004-09-28
申请人： Michael J. Beesley , Kireeti Kompella , Ramalingam K. Anand
发明人： Michael J. Beesley , Kireeti Kompella , Ramalingam K. Anand
IPC分类号： G01R31/08
CPC分类号： H04L45/60 , H04L45/22 , H04L45/28 , H04L45/586 , H04L49/254 , H04L49/30 , H04L49/70
摘要： A network device, such as a router, utilizes a virtual interface to hide the presence of redundant backup physical interfaces from a router control unit. If traffic needs to be redirected from a primary physical interface, the router remaps the virtual interface to the backup physical interface without needing to update routes and select one or more alternative routes due to the need to redirect traffic. Instead, the router control unit redirects network traffic associated with the primary physical interface to the associated backup physical interface. In this manner, delays associated with route updating can be avoided, and a relatively seamless switchover can be achieved from the primary to the backup physical interface.
摘要翻译：诸如路由器的网络设备利用虚拟接口从路由器控制单元隐藏冗余备份物理接口的存在。如果流量需要从主物理接口重定向，路由器将虚拟接口重新映射到备份物理接口，而不需要更新路由，并且由于需要重定向流量而选择一个或多个替代路由。相反，路由器控制单元将与主物理接口相关联的网络流量重定向到关联的备份物理接口。通过这种方式，可以避免与路由更新相关的延迟，从主从物理接口可以实现相对无缝切换。

28. 发明授权

US07319700B1 Communicating constraint information for determining a path subject to such constraints 有权
标题翻译：通信约束信息用于确定受这种限制的路径
公开(公告)号：US07319700B1
公开(公告)日：2008-01-15
申请号：US09752501
申请日：2000-12-29
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： H04L12/28 , H04L12/56 , G01R31/08 , G06F11/00
CPC分类号： H04L45/50 , H04L45/02 , H04L45/20 , H04L45/62
摘要： Path determination constraints may be encoded in the form of a program having one or more instructions. Each of instructions may include an operation code, and operands (or pointers to locations where operands are stored). In this way, an extensible, interoperable way for a nodes (e.g., label-switching routers) to communicate constraints within a network is provided. Such constraints may be inserted (e.g., as one or more CONSTRAINT objects) into signaling messages (e.g., a PATH RSVP message). By enabling the signaling of constraints, the determination of constraint-based (label-switched) paths can be distributed among a number of (label-switching) routers or other nodes. Upon receiving a message with constraints (e.g., a CONSTRAINT object(s)), a node may (i) ignore the constraints if the node is a tail-end node (label-switching router), (ii) apply the constraints to a link if the next hop in the (label-switched) path is strict, and/or (iii) perform a constraint-based path determination to a next hop if the next hop is loose.
摘要翻译：路径确定约束可以以具有一个或多个指令的程序的形式进行编码。每个指令可以包括操作码和操作数（或指向存储操作数的位置的指针）。以这种方式，提供了用于节点（例如，标签交换路由器）在网络内传送约束的可扩展的可互操作的方式。可以将这样的约束（例如，作为一个或多个CONSTRAINT对象）插入信令消息（例如，PATH RSVP消息）中。通过启用约束的信令，可以在多个（标签交换）路由器或其他节点之间分配基于约束的（标签交换）路径的确定。在接收到具有约束的消息（例如，CONSTRAINT对象）时，如果节点是尾端节点（标签交换路由器），则节点可以（i）忽略约束，（ii）将约束应用于如果（标签交换）路径中的下一跳是严格的，和/或（iii）如果下一跳是松散的，则对下一跳执行基于约束的路径确定。

29. 发明授权

US09166901B2 Determining liveness of protocols and interfaces 有权
标题翻译：确定协议和接口的活动
公开(公告)号：US09166901B2
公开(公告)日：2015-10-20
申请号：US12839866
申请日：2010-07-20
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： G06F15/173 , H04L12/701 , H04L12/26 , H04L12/751
CPC分类号： H04L43/0817 , H04L41/0654 , H04L43/00 , H04L43/06 , H04L43/0811 , H04L43/10 , H04L45/00 , H04L45/02 , H04L45/026 , H04L45/52 , H04L61/2007 , H04L69/08
摘要： The liveness of routing protocols can be determined using a mechanism to aggregate liveness information for the protocols. The ability of an interface to send and receive packets and the forwarding capability of an interface can also be determined using this mechanism. Since liveness information for multiple protocols, the liveness of interfaces, the forwarding capability of interfaces, or both, may be aggregated in a message, the message can be sent more often than could individual messages for each of the multiple protocols. This allows fast detection of failures, and sending connectivity messages for the individual protocols, such as neighbor “hellos,” to be sent less often.
摘要翻译：路由协议的活动可以使用用于聚合协议的活动信息的机制来确定。接口发送和接收报文的能力以及接口的转发能力也可以使用这种机制来确定。由于多个协议的活动信息，接口的活跃性，接口的转发能力或两者都可以聚合在消息中，所以可以比每个多个协议的单个消息更频繁地发送消息。这允许快速检测故障，并且发送诸如邻居“hellos”的各个协议的连通性消息被更少地发送。

30. 发明授权

US09100281B2 Systems and methods for equal-cost multi-path virtual private LAN service 有权
标题翻译：同等成本的多路径虚拟专用局域网服务的系统和方法
公开(公告)号：US09100281B2
公开(公告)日：2015-08-04
申请号：US13857517
申请日：2013-04-05
申请人： Kireeti Kompella
发明人： Kireeti Kompella
IPC分类号： H04L12/28 , H04L12/751 , H04L12/705 , H04L12/709 , H04L12/721 , H04L12/18 , H04L29/12
CPC分类号： H04L45/02 , H04L12/184 , H04L12/185 , H04L29/12952 , H04L45/18 , H04L45/245 , H04L45/68 , Y02D50/30
摘要： A provider edge device, associated with a virtual private local area network service (VPLS) system, includes a memory to store instructions to implement a pseudowire mechanism to receive a first data frame from a source customer edge (CE) device associated with the VPLS system, incorporate the first data frame into a first VPLS packet, determine whether the source CE device is a single-homed CE device or a multi-homed CE device, and incorporate, into the first VPLS packet, a first pseudowire label, if the source CE device is a single-homed CE device, and incorporate, into the first VPLS packet, a second pseudowire label, different from the first pseudowire label, if the source CE device is a multi-homed CE device; and a processor to execute the instructions.
摘要翻译：与虚拟专用局域网服务（VPLS）系统相关联的提供商边缘设备包括存储器，用于存储指令以实现伪线机制以从与VPLS系统相关联的源客户边缘（CE）设备接收第一数据帧将第一数据帧合并到第一VPLS分组中，确定源CE设备是单归属CE设备还是多归属CE设备，并且将第一伪线标签并入第一VPLS分组中，如果源如果源CE设备是多宿主CE设备，则CE设备是单归属CE设备，并入第一VPLS分组中，与第一伪线标签不同的第二伪线标签; 以及执行指令的处理器。

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