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1. 发明申请

US20090109975A1 SEPARATION OF DATA AND CONTROL IN A SWITCHING DEVICE 有权
标题翻译：切换设备中数据和控制的分离
公开(公告)号：US20090109975A1
公开(公告)日：2009-04-30
申请号：US12346918
申请日：2008-12-31
申请人： Pradeep S. SINDHU , Kireeti KOMPELLA , Dennis C. FERGUSON , Bjorn O. LIENCRES , Nalini AGARWAL , Hann-Hwan JU , Raymond Marcelino Manese LIM , Rasoul Mirzazadeh OSKOUY , Sreeram VEERAGANDHAM
发明人： Pradeep S. SINDHU , Kireeti KOMPELLA , Dennis C. FERGUSON , Bjorn O. LIENCRES , Nalini AGARWAL , Hann-Hwan JU , Raymond Marcelino Manese LIM , Rasoul Mirzazadeh OSKOUY , Sreeram VEERAGANDHAM
IPC分类号： H04L12/56
CPC分类号： G06F15/167 , H04L12/5601 , H04L29/06 , H04L45/00 , H04L45/72 , H04L45/7457 , H04L47/6225 , H04L49/103 , H04L49/108 , H04L49/1538 , H04L49/203 , H04L49/25 , H04L49/252 , H04L49/3072 , H04L49/3081 , H04L49/608 , H04L49/90 , H04L49/901 , H04L49/9042 , H04L49/9047 , H04L49/9057 , H04L69/22 , H04L2012/5652 , H04L2012/5679 , H04L2012/5681 , H04Q11/0478
摘要： A method and apparatus for switching a data packet between a source and destination in a network. The data packet includes a header portion and a data portion. The header portion includes routing information for the data packet. The method includes defining a data path in the router comprising a path through the router along which the data portion of the data packet travels and defining a control path comprising a path through the router along which routing information from the header portion travels. The method includes separating the data path and control path in the router such that the routing information can be separated from the data portion allowing for the separate processing of each in the router. The data portion can be stored in a global memory while routing decisions are made on the routing information in the control path.
摘要翻译：一种用于在网络中的源和目的地之间切换数据分组的方法和装置。数据分组包括报头部分和数据部分。报头部分包括用于数据分组的路由信息。该方法包括在路由器中定义数据路径，其包括通过路由器的路径，数据分组的数据部分沿着路径行进，并且定义包括通过路由器的路径的控制路径，路由器沿着路径信息从该路径行进。该方法包括分离路由器中的数据路径和控制路径，使得路由信息可以与数据部分分离，允许路由器中的每一个的单独处理。数据部分可以存储在全局存储器中，同时对控制路径中的路由信息作出路由决定。

2. 发明申请

US20110110373A1 COMPOSITE NEXT HOPS FOR FORWARDING DATA IN A NETWORK SWITCHING DEVICE 有权
标题翻译：用于在网络切换设备中转发数据的复合下一个HOPS
公开(公告)号：US20110110373A1
公开(公告)日：2011-05-12
申请号：US13009367
申请日：2011-01-19
申请人： Kaushik GHOSH , Kireeti KOMPELLA
发明人： Kaushik GHOSH , Kireeti KOMPELLA
IPC分类号： H04L12/56
CPC分类号： H04L45/02 , H04L45/025
摘要： A network device includes a memory, a routing engine and a forwarding engine. The memory stores a forwarding table and the routing engine constructs a first composite next hop that includes multiple next hops, where each of the multiple next hops represents an action to be taken on a data unit as it transits the network device or represents another composite next hop, and where the first composite next hop specifies a function to be performed on the plurality of next hops. The routing engine further stores the composite next hop in an entry of the forwarding table. The forwarding engine retrieves the composite next hop from the forwarding table, and forwards a data unit towards one or more network destinations based on the composite next hop.
摘要翻译：网络设备包括存储器，路由引擎和转发引擎。存储器存储转发表，并且路由引擎构建包括多个下一跳的第一复合下一跳，其中多个下一跳中的每一个表示当数据单元在网络设备上运行时或在代表另一个复合的数据单元上采取的动作并且第一复合下一跳指定要对多个下一跳执行的功能。路由引擎还将复合下一跳存储在转发表的条目中。转发引擎从转发表中检索复合下一跳，并且基于复合下一跳将数据单元转发到一个或多个网络目的地。

3. 发明申请

US20100287305A1 DETERMINING LIVENESS OF PROTOCOLS AND INTERFACES 有权
标题翻译：确定协议和接口的生命
公开(公告)号：US20100287305A1
公开(公告)日：2010-11-11
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
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。

4. 发明申请

US20090086644A1 DETECTING DATA PLANE LIVELINESS OF A LABEL-SWITCHED PATH 有权
标题翻译：检测标签路径的数据平面生活
公开(公告)号：US20090086644A1
公开(公告)日：2009-04-02
申请号：US12329708
申请日：2008-12-08
申请人： Kireeti KOMPELLA , Ping Pan , Nischal Sheth
发明人： Kireeti KOMPELLA , Ping Pan , Nischal Sheth
IPC分类号： G06F11/30
CPC分类号： H04L43/50 , H04L43/0811 , H04L43/12
摘要： Detecting if a label-switched path (LSP) is functioning properly. To test that packets that belong to a particular Forwarding Equivalence Class (FEC) actually end their MPLS LSP on an label switching router (LSR) that is an egress for that FEC, a request message carrying information about the FEC whose LSP is being verified may be used. The request message may be forwarded like any other packet belonging to that FEC. A basic connectivity test as well as a fault isolation test are supported. In a basic connectivity test mode, the packet should reach the end of the LSP, at which point it is sent to the control plane of the egress LSR. The LSR then verifies that it is indeed an egress for the FEC. In a fault isolation test mode, the packet is sent to the control plane of each transit LSR, which performs various checks that it is indeed a transit LSR for the LSP. The transit LSR may also return further information that helps check the control plane against the data plane, i.e., that forwarding matches what the routing protocols determined as the path. A reliable return path is used for the reply.
摘要翻译：检测标签交换路径（LSP）是否正常工作。为了测试属于特定转发等价类（FEC）的分组实际上在作为该FEC的出口的标签交换路由器（LSR）上结束其MPLS LSP，携带有关正在被验证LSP的FEC的信息的请求消息可以使用。请求消息可以像属于该FEC的任何其他分组一样转发。支持基本的连接测试以及故障隔离测试。在基本连接测试模式下，分组应到达LSP的末尾，此时将发送到出口LSR的控制平面。然后，LSR验证它确实是FEC的出口。在故障隔离测试模式下，将数据包发送到每个传输LSR的控制平面，进行各种检查，确认它是LSP的传输LSR。传输LSR还可以返回有助于检查控制平面对数据平面的进一步信息，即，该转发与确定为路径的路由协议相匹配。答复使用可靠的返回路径。

5. 发明申请

US20080192762A1 GRACEFUL RESTART FOR USE IN NODES EMPLOYING LABEL SWITCHED PATH SIGNALING PROTOCOLS 有权
标题翻译：使用标签开关路径信号协议的节点使用严格的重启
公开(公告)号：US20080192762A1
公开(公告)日：2008-08-14
申请号：US12101245
申请日：2008-04-11
申请人： Kireeti KOMPELLA , Manoj Leelanivas , Ping Pan , Yakov Rekhter
发明人： Kireeti KOMPELLA , Manoj Leelanivas , Ping Pan , Yakov Rekhter
IPC分类号： H04L12/56
CPC分类号： H04L45/50
摘要： When a node has to restart its control component, or a (e.g., label-switched path signaling) part of its control component, if that node can preserve its forwarding information across the restart, the effects of such restarts on label switched path(s) the include the restarting node are minimized. A node's ability to preserve forwarding information across a control component (part) restart is advertised. In the event of a restart, stale forwarding information can be used for an limited time before. The restarting node can use its forwarding information, as well as received label-path advertisements, to determine which of its labels should be associated with the path, for advertisement to its peers.
摘要翻译：当节点必须重新启动其控制组件或其控制组件的（例如，标签交换路径信令）部分时，如果该节点可以在重新启动时保留其转发信息，则这种重新启动对标签交换路径的影响）包括重启节点被最小化。节点通过控制组件（部分）重新启动来保留转发信息的能力被公布。在重新启动的情况下，过期的转发信息可以在有限的时间内使用。重新启动节点可以使用其转发信息以及接收到的标签路径广告来确定哪个标签应该与路径相关联，以便向对等体通告。

6. 发明申请

US20110286456A1 TRANSPORT NETWORKS SUPPORTING VIRTUAL PRIVATE NETWORKS, AND CONFIGURING SUCH NETWORKS 有权
标题翻译：运输网络支持虚拟私有网络，并配置此类网络
公开(公告)号：US20110286456A1
公开(公告)日：2011-11-24
申请号：US13205343
申请日：2011-08-08
申请人： Kireeti KOMPELLA
发明人： Kireeti KOMPELLA
IPC分类号： H04L12/56
CPC分类号： H04L41/084 , H04L45/00 , H04L45/10 , H04L45/50
摘要： A layer 2 transport network, and components thereof, supporting virtual network functionality among customer edge devices. Virtual private network configuration can be accomplished with merely local intervention by preprovisioning extra channel (or circuit) identifiers at each customer edge device and by advertising label base and range information corresponding to a list of channel (or circuit) identifiers.
摘要翻译：第2层传输网络及其组件，在客户边缘设备之间支持虚拟网络功能。虚拟专用网络配置可以仅通过在每个客户边缘设备处预先设定额外信道（或电路）标识符的局部干预来实现，并且通过对应于信道（或电路）标识符列表的标签基础和范围信息进行广告来实现。

7. 发明申请

US20110222412A1 OPERATIONS, ADMINISTRATION, AND MANAGEMENT FIELDS FOR PACKET TRANSPORT 有权
标题翻译：运输，管理和管理区域运输
公开(公告)号：US20110222412A1
公开(公告)日：2011-09-15
申请号：US12724102
申请日：2010-03-15
申请人： Kireeti KOMPELLA
发明人： Kireeti KOMPELLA
IPC分类号： H04L12/26
CPC分类号： H04L47/35 , H04L43/0852 , H04L45/00 , H04L45/22 , H04L45/26 , H04L45/70 , H04L47/26 , H04L47/33
摘要： A network includes an egress node connected to an ingress node via a network path. The egress node is configured to receive, from the ingress node, a group of packets via the network path, where each packet includes an operations, administration, and management (OAM) field appended to the packet, and where the OAM field stores OAM information. The egress node is further configured to read the OAM information from the packets; analyze the OAM information, associated with one or more of the packets, to determine that a network condition exists on the network path; and notify the ingress node that the network condition exists to permit the ingress node to perform a rerouting operation.
摘要翻译：网络包括通过网络路径连接到入口节点的出口节点。出口节点被配置为经由网络路径从入口节点接收一组分组，其中每个分组包括附加到分组的操作，管理和管理（OAM）字段，并且其中OAM字段存储OAM信息。出口节点还被配置为从分组读取OAM信息; 分析与一个或多个分组相关联的OAM信息，以确定网络路径上存在网络条件; 并通知入口节点存在网络条件以允许入口节点执行重新路由操作。

8. 发明申请

US20080084890A1 COMMUNICATING CONSTRAINT INFORMATION FOR DETERMINING A PATH SUBJECT TO SUCH CONSTRAINTS 有权
标题翻译：用于确定对这种限制条件的路径的约束信息的通信
公开(公告)号：US20080084890A1
公开(公告)日：2008-04-10
申请号：US11950219
申请日：2007-12-04
申请人： Kireeti KOMPELLA
发明人： Kireeti KOMPELLA
IPC分类号： H04L12/56
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。

9. 发明申请

US20130223283A1 SYSTEMS AND METHODS FOR EQUAL-COST MULTI-PATH VIRTUAL PRIVATE LAN SERVICE 审中-公开
标题翻译：用于均衡多路虚拟私人局域网服务的系统和方法
公开(公告)号：US20130223283A1
公开(公告)日：2013-08-29
申请号：US13857517
申请日：2013-04-05
申请人： Kireeti KOMPELLA
发明人： Kireeti KOMPELLA
IPC分类号： H04L12/56
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。

10. 发明申请

US20110170426A1 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：US20110170426A1
公开(公告)日：2011-07-14
申请号：US13071146
申请日：2011-03-24
申请人： Kireeti KOMPELLA , Nitin Bahadur
发明人： Kireeti KOMPELLA , Nitin Bahadur
IPC分类号： H04L12/26
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输节点的指令，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。

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