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1. 发明授权

US08422514B1 Dynamic configuration of cross-domain pseudowires 有权
标题翻译：跨域伪线的动态配置
公开(公告)号：US08422514B1
公开(公告)日：2013-04-16
申请号：US12755990
申请日：2010-04-07
申请人： Bhupesh Kothari , Nischal Sheth
发明人： Bhupesh Kothari , Nischal Sheth
IPC分类号： H04J3/16 , H04J3/22
CPC分类号： H04L12/4633
摘要： In general, techniques are described for dynamically configuring cross-domain pseudowires (PWs). A network device positioned between a first domain and a second domain of a computer network may implement the techniques. The intermediate network device comprises at least one interface and an LDP module, a transformation module and a routing protocol module. The interface receives a label distribution protocol (LDP) message that includes data for configuring a cross-domain PW from a first provider edge (PE) device of the first domain. The LDP module parses the received LDP message to extract the cross-domain PW configuration data. The translation module transforms the extracted data to conform to routing protocol extensions for advertising the cross-domain PW configuration data. The routing protocol module forms a routing protocol message that includes the transformed data. The interface outputs the routing protocol message to the second intermediate device of the second domain to establish the cross-domain PW.
摘要翻译：通常，描述了用于动态配置跨域伪线（PW）的技术。位于计算机网络的第一域和第二域之间的网络设备可以实现这些技术。中间网络设备包括至少一个接口和LDP模块，变换模块和路由协议模块。该接口接收标签分发协议（LDP）消息，其中包含用于从第一域的第一供应商边缘（PE）设备配置跨域PW的数据。 LDP模块解析接收的LDP消息，提取跨域PW配置数据。翻译模块将提取的数据转换为符合路由协议扩展，以广告跨域PW配置数据。路由协议模块形成包括转换数据的路由协议消息。接口将路由协议报文输出到第二域的第二中间设备，建立跨域PW。

2. 发明申请

US20120300620A1 FAST RESTORATION FOR PROVIDER EDGE NODE AND ACCESS LINK FAILURES 有权
标题翻译：快速恢复供应商边缘节点和访问链路故障
公开(公告)号：US20120300620A1
公开(公告)日：2012-11-29
申请号：US13563174
申请日：2012-07-31
申请人： Bhupesh Kothari , Nischal Sheth
发明人： Bhupesh Kothari , Nischal Sheth
IPC分类号： H04W24/00
CPC分类号： H04L45/28 , H04L45/22 , H04L45/68
摘要： A first network device creates a protection path to a second network device associated with a first service site, and creates a pseudowire between the first service site and a second service site via the first network device and the second network device. The first network device also detects a failure between the first network device and the first service site, and forwards traffic, provided by the pseudowire between the first service site and the second service site, via the protection path. The second network device uses the traffic on the protection path as a trigger to activate a link between the second network device and the first service site.
摘要翻译：第一网络设备创建到与第一服务站点相关联的第二网络设备的保护路径，并且经由第一网络设备和第二网络设备在第一服务站点和第二服务站点之间创建伪线。第一网络设备还检测第一网络设备和第一服务站点之间的故障，并且经由保护路径转发由第一服务站点和第二服务站点之间的伪线提供的流量。第二网络设备使用保护路径上的流量作为触发来激活第二网络设备和第一服务站点之间的链路。

3. 发明授权

US08259563B1 Fast restoration for provider edge node and access link failures 有权
标题翻译：快速恢复供应商边缘节点和访问链路故障
公开(公告)号：US08259563B1
公开(公告)日：2012-09-04
申请号：US12565468
申请日：2009-09-23
申请人： Bhupesh Kothari , Nischal Sheth
发明人： Bhupesh Kothari , Nischal Sheth
IPC分类号： G01R31/00
CPC分类号： H04L45/28 , H04L45/22 , H04L45/68
摘要： A first network device creates a protection path to a second network device associated with a first service site, and creates a pseudowire between the first service site and a second service site via the first network device and the second network device. The first network device also detects a failure between the first network device and the first service site, and forwards traffic, provided by the pseudowire between the first service site and the second service site, via the protection path. The second network device uses the traffic on the protection path as a trigger to activate a link between the second network device and the first service site.
摘要翻译：第一网络设备创建到与第一服务站点相关联的第二网络设备的保护路径，并且经由第一网络设备和第二网络设备在第一服务站点和第二服务站点之间创建伪线。第一网络设备还检测第一网络设备和第一服务站点之间的故障，并且经由保护路径转发由第一服务站点和第二服务站点之间的伪线提供的流量。第二网络设备使用保护路径上的流量作为触发来激活第二网络设备和第一服务站点之间的链路。

4. 发明授权

US08665711B2 Fast restoration for provider edge node and access link failures 有权
标题翻译：快速恢复供应商边缘节点和访问链路故障
公开(公告)号：US08665711B2
公开(公告)日：2014-03-04
申请号：US13563174
申请日：2012-07-31
申请人： Bhupesh Kothari , Nischal Sheth
发明人： Bhupesh Kothari , Nischal Sheth
IPC分类号： G01R31/08 , G06F11/00
CPC分类号： H04L45/28 , H04L45/22 , H04L45/68
摘要： A first network device creates a protection path to a second network device associated with a first service site, and creates a pseudowire between the first service site and a second service site via the first network device and the second network device. The first network device also detects a failure between the first network device and the first service site, and forwards traffic, provided by the pseudowire between the first service site and the second service site, via the protection path. The second network device uses the traffic on the protection path as a trigger to activate a link between the second network device and the first service site.
摘要翻译：第一网络设备创建到与第一服务站点相关联的第二网络设备的保护路径，并且经由第一网络设备和第二网络设备在第一服务站点和第二服务站点之间创建伪线。第一网络设备还检测第一网络设备和第一服务站点之间的故障，并且经由保护路径转发由第一服务站点和第二服务站点之间的伪线提供的流量。第二网络设备使用保护路径上的流量作为触发来激活第二网络设备和第一服务站点之间的链路。

5. 发明授权

US08634418B2 Providing extended administrative groups in computer networks 有权
标题翻译：在计算机网络中提供扩展的管理组
公开(公告)号：US08634418B2
公开(公告)日：2014-01-21
申请号：US13174962
申请日：2011-07-01
申请人： Ambrose Kwong , Nischal Sheth , Hannes Gredler , Nitin Bahadur , Harish Sitaraman , Avneesh Sachdev
发明人： Ambrose Kwong , Nischal Sheth , Hannes Gredler , Nitin Bahadur , Harish Sitaraman , Avneesh Sachdev
IPC分类号： H04L12/28
CPC分类号： H04L45/245 , H04L45/02 , H04L45/50 , Y02D50/30
摘要： In general, techniques are described for providing extended administrative groups in networks. A network device comprising an interface and a control unit may implement the techniques. The interface receives a routing protocol message that advertises a link. This message includes a field for storing first data associated with the link in accordance with the routing protocol. The field is defined by the routing protocol as a field having a different function from an administrative group field defined by the same routing protocol. The control unit determines that this field has been repurposed to store second data, wherein this second data specifies an extended administrative group for the link different from those that may be specified by the administrative group field. The control unit then updates routing information to associate the advertised link with the extended administrative group and performs path selection to select paths based on the updated routing information.
摘要翻译：一般来说，描述了在网络中提供扩展管理组的技术。包括接口和控制单元的网络设备可以实现这些技术。接口接收通告链路的路由协议消息。该消息包括用于根据路由协议存储与链路相关联的第一数据的字段。该字段由路由协议定义为具有与由相同路由协议定义的管理组字段不同的功能的字段。控制单元确定该字段已被重新利用以存储第二数据，其中该第二数据指定用于该链接的扩展管理组，其不同于可由管理组字段指定的那些。然后，控制单元更新路由信息以将通告的链路与扩展管理组相关联，并且基于更新的路由信息执行路径选择以选择路径。

6. 发明授权

US08611359B1 Scaling MPLS across areas of an autonomous system using labeled interior border gateway protocol 有权
标题翻译：使用标记的内部边界网关协议在自治系统的区域范围内扩展MPLS
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。

7. 发明申请

US20130003728A1 PROVIDING EXTENDED ADMINISTRATIVE GROUPS IN COMPUTER NETWORKS 有权
标题翻译：在计算机网络中提供扩展的管理组
公开(公告)号：US20130003728A1
公开(公告)日：2013-01-03
申请号：US13174962
申请日：2011-07-01
申请人： Ambrose Kwong , Nischal Sheth , Hannes Gredler , Nitin Bahadur , Harish Sitaraman , Avneesh Sachdev
发明人： Ambrose Kwong , Nischal Sheth , Hannes Gredler , Nitin Bahadur , Harish Sitaraman , Avneesh Sachdev
IPC分类号： H04L12/56
CPC分类号： H04L45/245 , H04L45/02 , H04L45/50 , Y02D50/30
摘要： In general, techniques are described for providing extended administrative groups in networks. A network device comprising an interface and a control unit may implement the techniques. The interface receives a routing protocol message that advertises a link. This message includes a field for storing first data associated with the link in accordance with the routing protocol. The field is defined by the routing protocol as a field having a different function from an administrative group field defined by the same routing protocol. The control unit determines that this field has been repurposed to store second data, wherein this second data specifies an extended administrative group for the link different from those that may be specified by the administrative group field. The control unit then updates routing information to associate the advertised link with the extended administrative group and performs path selection to select paths based on the updated routing information.
摘要翻译：一般来说，描述了在网络中提供扩展管理组的技术。包括接口和控制单元的网络设备可以实现这些技术。接口接收通告链路的路由协议消息。该消息包括用于根据路由协议存储与链路相关联的第一数据的字段。该字段由路由协议定义为具有与由相同路由协议定义的管理组字段不同的功能的字段。控制单元确定该字段已被重新利用以存储第二数据，其中该第二数据指定用于该链接的扩展管理组，其不同于可由管理组字段指定的那些。然后，控制单元更新路由信息以将通告的链路与扩展管理组相关联，并且基于更新的路由信息执行路径选择以选择路径。

8. 发明申请

US20100296414A1 SUPPORTING VIRTUAL PRIVATE NETWORKS USING A FIRST NETWORK TOPOLOGY FOR FORWARDING AND A SUBSET OF THE FIRST NETWORK TOPOLOGY OR A SMALLER TOPOLOGY FOR SIGNALING 有权
标题翻译：支持虚拟私人网络，使用第一个网络拓扑来转发第一个网络拓扑学或一个小信号拓扑学
公开(公告)号：US20100296414A1
公开(公告)日：2010-11-25
申请号：US12852225
申请日：2010-08-06
申请人： Quaizar Vohra , Nischal Sheth
发明人： Quaizar Vohra , Nischal Sheth
IPC分类号： H04L12/28
CPC分类号： H04L45/00 , H04L12/4633 , H04L12/4675 , H04L45/02 , H04L45/028 , H04L45/586
摘要： Virtual Private Networks (VPNs) are supported in which customers may use popular internet gateway protocol (IGPs) without the need to convert such IGPs, running on customer devices to a single protocol, such as the border gateway protocol (BGP). Scaling problems, which might otherwise occur when multiple instances of an IGP flood link state information, are avoided by using a flooding topology which is smaller than a forwarding topology. The flooding topology may be a fully connected sub-set of the forwarding topology.
摘要翻译：支持虚拟专用网络（VPN），其中客户可以使用流行的互联网网关协议（IGP），而不需要将在客户设备上运行的这样的IGP转换为单一协议，例如边界网关协议（BGP）。通过使用小于转发拓扑的洪泛拓扑来避免IGP洪泛链路状态信息的多个实例可能发生的扩展问题。洪泛拓扑可以是完全连接的转发拓扑的子集。

9. 发明授权

US07792987B1 Supporting virtual private networks using a first network topology for forwarding and a subset of the first network topology or a smaller topology for signaling 有权
标题翻译：支持使用第一网络拓扑进行转发的虚拟专用网络和第一网络拓扑的子集，或用于信令的较小拓扑
公开(公告)号：US07792987B1
公开(公告)日：2010-09-07
申请号：US10419370
申请日：2003-04-21
申请人： Quaizar Vohra , Nischal Sheth
发明人： Quaizar Vohra , Nischal Sheth
IPC分类号： G06F15/173
CPC分类号： H04L45/00 , H04L12/4633 , H04L12/4675 , H04L45/02 , H04L45/028 , H04L45/586
摘要： Virtual Private Networks (VPNs) are supported in which customers may use popular internet gateway protocol (IGPs) without the need to convert such IGPs, running on customer devices to a single protocol, such as the border gateway protocol (BGP). Scaling problems, which might otherwise occur when multiple instances of an IGP flood link state information, are avoided by using a flooding topology which is smaller than a forwarding topology. The flooding topology may be a fully connected sub-set of the forwarding topology.
摘要翻译：支持虚拟专用网络（VPN），其中客户可以使用流行的互联网网关协议（IGP），而不需要将在客户设备上运行的这样的IGP转换为单一协议，例如边界网关协议（BGP）。通过使用小于转发拓扑的洪泛拓扑来避免IGP洪泛链路状态信息的多个实例可能发生的扩展问题。洪泛拓扑可以是完全连接的转发拓扑的子集。

10. 发明申请

US20100142548A1 METHODS AND APPARATUS FOR USING BOTH LDP AND RSVP IN A COMMUNICATIONS SYSTEM 有权
标题翻译：在通信系统中使用两种LDP和RSVP的方法和装置
公开(公告)号：US20100142548A1
公开(公告)日：2010-06-10
申请号：US12705936
申请日：2010-02-15
申请人： Nischal Sheth
发明人： Nischal Sheth
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L65/00 , H04L45/507
摘要： Methods and apparatus for allowing routers in an autonomous system to implement LDP and RSVP at the same time. RSVP can be used in the network core with LDP being used in network regions surrounding the core. LDP LSPs are tunneled through the RSVP network core using RSVP LSPs and label stacking techniques. During route selection LDP LSPs which use an RSVP LSP tunnel are preferred over alternative LDP LSPs having an equal cost associated with them to create a preference for traffic engineered routes.
摘要翻译：允许自治系统中的路由器同时实现LDP和RSVP的方法和装置。 RSVP可用于网络核心，LDP用于围绕核心的网络区域。 LDP LSP使用RSVP LSP和标签堆叠技术通过RSVP网络进行隧道传输。在路由选择期间，使用RSVP LSP隧道的LDP LSP优先于具有与其相关联的相同成本的替代LDP LSP，以创建对流量工程路由的偏好。

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