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1. 发明授权

US09838947B2 Mobile node host route installation and withdrawal 有权
公开(公告)号：US09838947B2
公开(公告)日：2017-12-05
申请号：US15018687
申请日：2016-02-08
申请人： Juniper Networks, Inc.
发明人： Hendrikus G. P. Bosch , Martin Djernaes
IPC分类号： H04W88/06 , H04L12/46 , H04L29/12 , H04L12/751 , H04L12/757 , H04W40/36 , H04W40/34 , H04L12/715 , H04W40/24 , H04W84/12
CPC分类号： H04W40/34 , H04L12/4641 , H04L45/02 , H04L45/023 , H04L45/64 , H04L61/2007 , H04W40/248 , H04W40/36 , H04W84/12 , H04W88/06
摘要： In general, techniques are described for atomically installing and withdrawing host routes along paths connecting network routers to attenuate packet loss for mobile nodes migrating among wireless LAN access networks and a mobile network. In some examples, whenever the mobile node moves from one attachment point to the next, it triggers the distribution of its host route from the new attachment point toward the service provider network hub provider edge (PE) router that anchors the mobile node on a service provider network. Routers participating in the Mobile VPN install the host route “atomically” from the attachment point to the mobile gateway so as to ensure convergence of the network forwarding plane with the host route toward the new attachment point prior to transitioning mobile node connectivity from a previous attachment point.

2. 发明申请

US20170091258A1 Packet Processing Rule Versioning 审中-公开
公开(公告)号：US20170091258A1
公开(公告)日：2017-03-30
申请号：US15007191
申请日：2016-01-26
申请人： Nicira, Inc.
发明人： Jarno Rajahalme
IPC分类号： G06F17/30 , H04L29/12 , H04L12/741
CPC分类号： H04L45/023 , H04L45/021 , H04L45/38 , H04L45/54 , H04L45/64
摘要： Some embodiments provide a method for a managed forwarding element that processes packets through a set of packet processing tables by matching rules in the tables. The method receives an update that requires modification to at least one of the packet processing tables. Each rule in the packet processing tables is assigned a range of packet processing table versions in which the rule is valid for processing packets. The method modifies the packet processing tables according to the received update by at least one of (i) modifying the range of packet processing table versions in which an existing rule is valid to end after a current packet processing table version and (ii) adding a new rule with a range of valid packet processing table versions that begins with a next packet processing table version. The method increments the current version of the packet processing tables to commit the modifications.

3. 发明申请

US20160164770A1 Method and Apparatus for Operating a Routing Device and Relevant Routing Device 有权
标题翻译：用于操作路由设备和相关路由设备的方法和设备
公开(公告)号：US20160164770A1
公开(公告)日：2016-06-09
申请号：US14907629
申请日：2013-08-05
申请人： TELEFONAKTIEBOLAGET L M ERICSSON
发明人： Yanxing LIU
IPC分类号： H04L12/757 , H04L12/721
CPC分类号： H04L45/023 , H04L41/12 , H04L45/12
摘要： One of the embodiments of the present invention relates to a method for operating a routing device in a network. The method comprises: receiving, during routing table calculation for a first topology change associated with a first routing device, a message indicative of a second topology change associated with a second routing device; determining a time duration of a hold time period based on a running time required for performing shortest path first calculations for a shortest path between the routing device and the second routing device, wherein the running time is retrieved from a running time database and the running time database is configured to store plural values each of which is indicative of a running time required for performing shortest path first calculations for a shortest path between the routing device and each of other routing devices in the network, wherein during the hold time period, the routing device does not perform any further routing table calculation. The present invention also relates to corresponding routing device.
摘要翻译：本发明的实施例之一涉及一种在网络中操作路由设备的方法。该方法包括：在与第一路由设备相关联的第一拓扑变化的路由表计算期间接收指示与第二路由设备相关联的第二拓扑变化的消息; 基于对路由设备和第二路由设备之间的最短路径进行最短路径优先计算所需的运行时间来确定保持时间段的持续时间，其中从运行时间数据库检索运行时间，并且运行时间数据库被配置为存储多个值，每个值表示对路由设备和网络中的每个其他路由设备之间的最短路径执行最短路径优先计算所需的运行时间，其中在保持时间段期间，路由设备不执行任何进一步的路由表计算。本发明还涉及对应的路由设备。

4. 发明授权

US09270574B2 Method and apparatus providing delayed path calculations based on service type 有权
标题翻译：基于服务类型提供延迟路径计算的方法和装置
公开(公告)号：US09270574B2
公开(公告)日：2016-02-23
申请号：US13737415
申请日：2013-01-09
申请人： AVAYA INC.
发明人： Daniel R. Joyal
IPC分类号： G06F15/173 , H04L12/751 , H04L12/757
CPC分类号： H04L45/025 , H04L45/023
摘要： A method, apparatus and computer program product for providing delayed path calculations based on service type is presented. A first network device sends to at least one of a plurality of other network devices in a network, link state information directing receivers of the link state information, when computing routes transiting though the first network device, to refrain from using the first network device on at least one of the group consisting of per Network Layer Protocol Identifier (NLPID), per address family, and per service within an address family.
摘要翻译：提出了一种基于服务类型提供延迟路径计算的方法，装置和计算机程序产品。当计算经过第一网络设备的路由时，第一网络设备向网络中的多个其他网络设备中的至少一个发送链路状态信息的链接状态信息，以避免使用第一网络设备所述组中的至少一个由每个网络层协议标识符（NLPID），每个地址系列以及地址系列中的每个服务组成。

5. 发明授权

US09258762B2 Mobile node host route installation and withdrawal 有权
标题翻译：移动节点主机路由安装和撤销
公开(公告)号：US09258762B2
公开(公告)日：2016-02-09
申请号：US14543754
申请日：2014-11-17
申请人： Juniper Networks, Inc.
发明人： Hendrikus G. P. Bosch , Martin Djernaes
IPC分类号： H04W88/06 , H04L12/46 , H04L29/12 , H04L12/751 , H04L12/757 , H04W40/36 , H04W84/12
CPC分类号： H04W40/34 , H04L12/4641 , H04L45/02 , H04L45/023 , H04L45/64 , H04L61/2007 , H04W40/248 , H04W40/36 , H04W84/12 , H04W88/06
摘要： In general, techniques are described for atomically installing and withdrawing host routes along paths connecting network routers to attenuate packet loss for mobile nodes migrating among wireless LAN access networks and a mobile network. In some examples, whenever the mobile node moves from one attachment point to the next, it triggers the distribution of its host route from the new attachment point toward the service provider network hub provider edge (PE) router that anchors the mobile node on a service provider network. Routers participating in the Mobile VPN install the host route “atomically” from the attachment point to the mobile gateway so as to ensure convergence of the network forwarding plane with the host route toward the new attachment point prior to transitioning mobile node connectivity from a previous attachment point.
摘要翻译：一般来说，描述了沿着连接网络路由器的路径原子安装和撤回主机路由以衰减在无线LAN接入网络和移动网络之间迁移的移动节点的分组丢失的技术。在一些示例中，每当移动节点从一个附接点移动到下一个连接点时，它触发其主机路由从新附接点向服务提供商网络中心提供商边缘（PE）路由器的分配，该路由器将移动节点锚定在服务上提供商网络。参与移动VPN的路由器将主机路由从附件点“原始地”安装到移动网关，以便在从先前的附件转移移动节点连接之前，确保网络转发平面与主机路由向新连接点的融合点。

6. 发明授权

US09137142B2 Reduced traffic loss for border gateway protocol sessions in multi-homed network connections 有权
标题翻译：减少多归属网络连接中边界网关协议会话的流量损失
公开(公告)号：US09137142B2
公开(公告)日：2015-09-15
申请号：US13436896
申请日：2012-03-31
申请人： Kaliraj Vairavakkalai
发明人： Kaliraj Vairavakkalai
IPC分类号： H04L12/56 , H04L12/757 , H04L12/715
CPC分类号： H04L45/023 , H04L45/04
摘要： This disclosure describes techniques to reduce traffic loss for a Border Gateway Protocol (BGP) session by delaying re-advertisement of routes received from a newly re-established multi-homed router by a primary router until all the routes are installed in a forwarding plane of the primary router. The techniques of this disclosure make use of a BGP marker received from the multi-homed router that indicates the end of a route download for an address family. Upon receiving the BGP marker, a control plane of the primary router requests a route acknowledgement message (Route-ACK) from the forwarding plane for only the last route of the address family received before the BGP marker. When the control plane receives the Route-ACK indicating that the last route has been installed in the forwarding plane, the primary router initiates re-advertisement of the routes to other BGP peer routers.
摘要翻译：本公开描述了通过延迟从主路由器重新发布从新重建的多归属路由器接收到的路由直到所有路由安装在转发平面内的边缘网关协议（BGP）会话的流量损失的技术主路由器。本公开的技术使用从多归属路由器接收的指示地址族的路由下载结束的BGP标记。在接收到BGP标记之后，主路由器的控制平面从转发平面请求路由确认消息（Route-ACK），仅在BGP标记之前接收到的地址族的最后一条路由。当控制平面接收到指示最后一条路由已经安装在转发平面中的Route-ACK时，主路由器启动到其他BGP对等体路由器的路由的重新发布。

7. 发明授权

US09094340B2 LDP IGP synchronization for broadcast networks 有权
标题翻译： LDP IGP同步广播网络
公开(公告)号：US09094340B2
公开(公告)日：2015-07-28
申请号：US14171332
申请日：2014-02-03
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Sriganesh Kini , Wenhu Lu
IPC分类号： H04L12/26 , H04L12/723 , H04L12/751 , H04L12/757 , H04L12/761 , H04L12/707 , H04J3/06 , H04L12/703
CPC分类号： H04L45/507 , H04J3/0635 , H04L45/02 , H04L45/023 , H04L45/16 , H04L45/22 , H04L45/28 , H04L45/50
摘要： A network element that has a broadcast interface to a broadcast network becoming operational determines whether at least one alternate path exists to the broadcast network. The broadcast interface is to carry traffic on a label switched path. If an alternate path exists, the broadcast interface will not be advertised to the broadcast network until label distribution protocol (LDP) is operational with all neighbors on the broadcast interface.
摘要翻译：具有到广播网络的广播接口变得可操作的网络元件确定是否存在至少一个替代路径到广播网络。广播接口是在标签交换路径上携带流量。如果存在备用路径，广播接口将不会广播到广播网络，直到标签分发协议（LDP）与广播接口上的所有邻居一起运行。

8. 发明授权

US08958430B2 OSPF non-stop routing frozen standby 有权
标题翻译： OSPF不间断路由冻结待机
公开(公告)号：US08958430B2
公开(公告)日：2015-02-17
申请号：US13349530
申请日：2012-01-12
申请人： Ing-Wher Chen , Wenhu Lu , Alfred C. Lindem, III
发明人： Ing-Wher Chen , Wenhu Lu , Alfred C. Lindem, III
IPC分类号： H04L12/28 , H04L12/56 , H04L12/721 , H04L12/703
CPC分类号： H04L45/12 , H04L45/023 , H04L45/123 , H04L45/22 , H04L45/28 , H04L45/58 , H04L45/60
摘要： Open Shortest Path First (OSPF) Non-stop Routing (NSR) with frozen standby LSDB is described. A network element includes a first OSPF instance initially acting as an active OSPF instance and a second OSPF instance initially acting as a standby OSPF instance. The second OSPF instance receives LSAs from the first OSPF instance and installs the LSAs in its LSDB. The LSAs in the LSDB are only aged by the active OSPF instance. If and when the second OSPF instance becomes the active OSPF instance, the second OSPF instance then ages the LSAs in the LSDB and processes each of the LSAs according to the aging of that LSA, where processing includes one of purging that LSA and refreshing that LSA.
摘要翻译：描述了具有冻结备用LSDB的开放最短路径优先（OSPF）不间断路由（NSR）。一个网络元素包括最初起作用的活动的OSPF实例的第一个OSPF实例和最初充当备用OSPF实例的第二个OSPF实例。第二个OSPF实例从第一个OSPF实例接收LSA，并在其LSDB中安装LSA。 LSDB中的LSA只能由活动的OSPF实例进行老化。如果当第二个OSPF实例成为活动的OSPF实例时，第二个OSPF实例会老化LSDB中的LSA，并根据该LSA的老化处理每个LSA，其中处理包括清除LSA并刷新该LSA 。

9. 发明授权

US08891450B2 Mobile node host route installation and withdrawal 有权
标题翻译：移动节点主机路由安装和撤销
公开(公告)号：US08891450B2
公开(公告)日：2014-11-18
申请号：US13536740
申请日：2012-06-28
申请人： Hendrikus G. P. Bosch , Martin Djernaes
发明人： Hendrikus G. P. Bosch , Martin Djernaes
IPC分类号： H04L12/46
CPC分类号： H04W40/34 , H04L12/4641 , H04L45/02 , H04L45/023 , H04L45/64 , H04L61/2007 , H04W40/248 , H04W40/36 , H04W84/12 , H04W88/06
摘要： In general, techniques are described for atomically installing and withdrawing host routes along paths connecting network routers to attenuate packet loss for mobile nodes migrating among wireless LAN access networks and a mobile network. In some examples, whenever the mobile node moves from one attachment point to the next, it triggers the distribution of its host route from the new attachment point toward the service provider network hub provider edge (PE) router that anchors the mobile node on a service provider network. Routers participating in the Mobile VPN install the host route “atomically” from the attachment point to the mobile gateway so as to ensure convergence of the network forwarding plane with the host route toward the new attachment point prior to transitioning mobile node connectivity from a previous attachment point.
摘要翻译：一般来说，描述了沿着连接网络路由器的路径原子安装和撤回主机路由以衰减在无线LAN接入网络和移动网络之间迁移的移动节点的分组丢失的技术。在一些示例中，每当移动节点从一个附接点移动到下一个连接点时，它触发其主机路由从新附接点向服务提供商网络中心提供商边缘（PE）路由器的分配，该路由器将移动节点锚定在服务上提供商网络。参与移动VPN的路由器将主机路由从附件点“原始地”安装到移动网关，以便在从先前的附件转移移动节点连接之前，确保网络转发平面与主机路由向新连接点的融合点。

10. 发明授权

US08873376B2 Method of obtaining information representative of an availability, a device for obtaining information, and a corresponding computer program 有权
标题翻译：获取表示可用性的信息的方法，用于获取信息的设备以及相应的计算机程序
公开(公告)号：US08873376B2
公开(公告)日：2014-10-28
申请号：US12823808
申请日：2010-06-25
申请人： Gregory Cauchie , Marc Capelle , Frédéric Fourneau
发明人： Gregory Cauchie , Marc Capelle , Frédéric Fourneau
IPC分类号： G01R31/08 , G06F11/00 , H04L12/28 , G06F15/173 , H04L12/751 , H04L12/26 , H04L12/701 , H04L12/721 , H04L12/757
CPC分类号： H04L12/26 , H04L43/00 , H04L45/00 , H04L45/02 , H04L45/023 , H04L45/70
摘要： A method is provided of obtaining information representative of an availability of a communications network, which includes a plurality of equipment exchanging routing data in accordance with a routing protocol. The method includes a stage of storing in chronological order at least some of the routing data exchanged between at least one first equipment and at least one second equipment; a stage of totaling unavailability times as a function of the routing data stored in chronological order for a predetermined time period; a stage of obtaining the information representative of an availability for the time period as a function of the totaled unavailability times.
摘要翻译：提供了一种获得表示通信网络的可用性的信息的方法，其包括根据路由协议交换路由数据的多个设备。该方法包括按时间顺序存储在至少一个第一设备和至少一个第二设备之间交换的路由数据中的至少一些路由数据的阶段; 作为按照时间顺序存储预定时间段的路由数据的函数的总共不可用时间的阶段; 获取代表该时间段的可用性的信息作为总计不可用时间的函数的阶段。

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