公开(公告)号：US08611359B1

公开(公告)日：2013-12-17

申请号：US12626221

申请日：2009-11-25

申请人： Kireeti Kompella ,  Nischal Sheth ,  Shivani Aggarwal ,  Yakov Rekhter

发明人： Kireeti Kompella ,  Nischal Sheth ,  Shivani Aggarwal ,  Yakov Rekhter

IPC分类号： H04L12/28

CPC分类号： H04L45/04 ,  H04L45/50

摘要： Techniques are described for scaling Multiprotocol Label Switching (MPLS) across areas of an autonomous system using a labeled interior Border Gateway Protocol (iBGP). A method includes executing a first label distribution protocol at a border node at a border between two of a plurality of interior gateway protocol (IGP) areas of a single autonomous system (AS), and exchanging label distribution messages using the first label distribution protocol to establish a first intra-area label switched path (LSP) within a first one of IGP areas. The method also includes executing a labeled interior border gateway protocol at the border node, and exchanging label distribution messages using the labeled interior border gateway protocol to establish a hierarchical inter-area LSP that runs over the previously established first intra-area LSP, wherein the hierarchical inter-area LSP extends across the plurality of IGP areas of the AS.

摘要翻译： 描述了使用标记的内部边界网关协议（iBGP）在跨自治系统的区域缩放多协议标签交换（MPLS）的技术。 一种方法包括在单个自治系统（AS）的多个内部网关协议（IGP）区域中的两个之间的边界处的边界节点处执行第一标签分发协议，以及使用第一标签分发协议交换标签分发消息， 在第一个IGP区域内建立第一个区域内标签交换路径（LSP）。 该方法还包括在边界节点处执行标记的内部边界网关协议，并且使用标记的内部边界网关协议来交换标签分发消息，以建立在先前建立的第一区域内LSP上运行的分层区域间LSP，其中， 分层区域间LSP跨越AS的多个IGP区域延伸。

公开(公告)号：US07903651B2

公开(公告)日：2011-03-08

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 ,  G06F15/173

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。

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。

公开(公告)号：US07359377B1

公开(公告)日：2008-04-15

申请号：US10095000

申请日：2002-03-11

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。

公开(公告)号：US07986695B1

公开(公告)日：2011-07-26

申请号：US11329371

申请日：2006-01-10

申请人： Chaitanya Kodeboyina ,  Kireeti Kompella ,  Yakov Rekhter

发明人： Chaitanya Kodeboyina ,  Kireeti Kompella ,  Yakov Rekhter

IPC分类号： H04L12/56

CPC分类号： H04L45/04 ,  H04L45/46 ,  H04L45/64

摘要： Techniques are described for automatically selecting virtual private network (VPN) site-IDs for each customer site within a VPN established over a network. The techniques described herein enable a network router within a VPN to automatically allocate unique site-IDs for each customer site included in the VPN in a dense manner. In some cases, the VPNs may comprise virtual private local area network (LAN) service (VPLS) domains that transmit layer two (L2) traffic between customer sites, i.e., VPLS sites, via the network. For example, a network service provider may configure a network device, such as a router, to belong to one or more VPNs. When a customer site within one of the VPNs connects to the router, the router configures the customer site on the router. The router then automatically selects a site-ID for the customer site configured on the router.

摘要翻译： 描述了用于在通过网络建立的VPN中为每个客户站点自动选择虚拟专用网（VPN）站点ID的技术。 本文描述的技术使得VPN内的网络路由器能够以密集的方式为包括在VPN中的每个客户站点自动分配唯一的站点ID。 在一些情况下，VPN可以包括经由网络在客户站点（即VPLS站点）之间传送第二层（L2）流量的虚拟专用局域网（LAN）服务（VPLS）域。 例如，网络服务提供商可以将诸如路由器的网络设备配置为属于一个或多个VPN。 当一个VPN内的客户站点连接到路由器时，路由器将配置路由器上的客户站点。 路由器然后自动为路由器上配置的客户站点选择一个站点ID。

公开(公告)号：US07805536B1

公开(公告)日：2010-09-28

申请号：US10775544

申请日：2004-02-10

申请人： Kireeti Kompella ,  Yakov Rekhter

发明人： Kireeti Kompella ,  Yakov Rekhter

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： Forwarding liveness, such as the ability of an interface to send and receive packets and forwarding capabilities of the interface, is determined. The determined forwarding liveness may be sent in a single message, allowing forwarding liveness information to be sent more frequently which permits fast detection of failures. The message may also include aggregating liveness information for multiple protocols.

摘要翻译： 确定接口的发送和接收能力以及接口的转发能力等转发活动。 确定的转发活动可以在单个消息中发送，允许更频繁地发送活动信息，从而允许快速检测到故障。 消息还可以包括聚合多个协议的活动信息。

公开(公告)号：US09166807B2

公开(公告)日：2015-10-20

申请号：US12404786

申请日：2009-03-16

申请人： Rahul Aggarwal ,  Yakov Rekhter ,  Kireeti Kompella

发明人： Rahul Aggarwal ,  Yakov Rekhter ,  Kireeti Kompella

IPC分类号： H04L12/28 ,  H04L12/18 ,  H04L12/761 ,  H04L12/723 ,  H04Q11/00

CPC分类号： H04L12/1886 ,  H04L45/16 ,  H04L45/50

摘要： Principles of the invention relate to techniques for transmission of Layer 2 (L2) traffic over a point to multi-point (P2MP) label switched path (LSP) within a multi-protocol Label Switching (MPLS) network. A source or ingress network device may implement the techniques to connect multiple L2 interfaces to a P2MP LSP within an MPLS network via a P2MP Pseudo-Wire (PW) mechanism that emulates delivery of L2 data units over a packet switched network, such as the MPLS network. The ingress network device first establishes the P2MP LSP and then connects two or more L2 interfaces to the P2MP LSP via the P2MP PW mechanism. Egress network devices may also implement the techniques to terminate the P2MP LSP and de-multiplex traffic arriving via multiple P2MP PWs carried over the same P2MP LSP.

摘要翻译： 本发明的原理涉及用于在多协议标签交换（MPLS）网络内的点到多点（P2MP）标签交换路径（LSP）上传输第2层（L2）业务的技术。 源或入口网络设备可以实现通过P2MP伪线（PW）机制将多个L2接口连接到MPLS网络内的P2MP LSP的技术，所述P2MP伪线（PW）机制通过分组交换网络（诸如MPLS）模拟L2数据单元的传送 网络。 入口网络设备首先建立P2MP LSP，然后通过P2MP PW机制将两个或多个L2接口连接到P2MP LSP。 出口网络设备还可以实现终止P2MP LSP的技术，并对通过相同P2MP LSP承载的多个P2MP PW到达的流量进行解复用。

公开(公告)号：US08693471B2

公开(公告)日：2014-04-08

申请号：US13021017

申请日：2011-02-04

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 ,  G06F15/173

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) 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 a 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，可以在有限的时间内使用陈旧的转发信息。 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。

公开(公告)号：US20110128968A1

公开(公告)日：2011-06-02

申请号：US13021017

申请日：2011-02-04

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) 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 a 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，可以在有限的时间内使用陈旧的转发信息。 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。

公开(公告)号：US20090175274A1

公开(公告)日：2009-07-09

申请号：US12404786

申请日：2009-03-16

申请人： Rahul Aggarwal ,  Yakov Rekhter ,  Kireeti Kompella

发明人： Rahul Aggarwal ,  Yakov Rekhter ,  Kireeti Kompella

IPC分类号： H04L12/56

CPC分类号： H04L12/1886 ,  H04L45/16 ,  H04L45/50

摘要： Principles of the invention relate to techniques for transmission of Layer 2 (L2) traffic over a point to multi-point (P2MP) label switched path (LSP) within a multi-protocol Label Switching (MPLS) network. A source or ingress network device may implement the techniques to connect multiple L2 interfaces to a P2MP LSP within an MPLS network via a P2MP Pseudo-Wire (PW) mechanism that emulates delivery of L2 data units over a packet switched network, such as the MPLS network. The ingress network device first establishes the P2MP LSP and then connects two or more L2 interfaces to the P2MP LSP via the P2MP PW mechanism. Egress network devices may also implement the techniques to terminate the P2MP LSP and de-multiplex traffic arriving via multiple P2MP PWs carried over the same P2MP LSP.

摘要翻译： 本发明的原理涉及用于在多协议标签交换（MPLS）网络内的点到多点（P2MP）标签交换路径（LSP）上传输第2层（L2）业务的技术。 源或入口网络设备可以实现通过P2MP伪线（PW）机制将多个L2接口连接到MPLS网络内的P2MP LSP的技术，所述P2MP伪线（PW）机制通过分组交换网络（诸如MPLS）模拟L2数据单元的传送 网络。 入口网络设备首先建立P2MP LSP，然后通过P2MP PW机制将两个或多个L2接口连接到P2MP LSP。 出口网络设备还可以实现终止P2MP LSP的技术，并对通过相同P2MP LSP承载的多个P2MP PW到达的流量进行解复用。