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1. 发明授权

US09032095B1 Routing device having multiple logical routers 有权
标题翻译：具有多个逻辑路由器的路由设备
公开(公告)号：US09032095B1
公开(公告)日：2015-05-12
申请号：US10753026
申请日：2004-01-06
申请人： Paul S. Traina , Manoj Leelanivas , Steven Lin , Nischal Sheth , Wing Eng , Andrew H. Heffernan
发明人： Paul S. Traina , Manoj Leelanivas , Steven Lin , Nischal Sheth , Wing Eng , Andrew H. Heffernan
IPC分类号： G06F15/173 , H04L12/751 , H04L29/06 , H04L12/701 , H04L12/24
CPC分类号： H04L45/02 , H04J14/0227 , H04J14/0241 , H04L12/2856 , H04L12/2874 , H04L29/06 , H04L41/0213 , H04L41/0813 , H04L41/0893 , H04L45/00 , H04L45/44 , H04L45/586 , H04L63/0272 , H04L67/34
摘要： Techniques are described for implementing one or more logical routers within a single physical routing device. These logical routers, as referred to herein, are logically isolated in the sense that they achieve operational and organizational isolation within the routing device without requiring the use of additional or redundant hardware, e.g., additional hardware-based routing controllers. The routing device may, for example, include a computing platform, and a plurality of software process executing within the computing platform, wherein the software processes operate as logical routers. The routing device may include a forwarding component shared by the logical routers to forward network packets received from a network in accordance with the forwarding tables.
摘要翻译：描述了用于在单个物理路由设备内实现一个或多个逻辑路由器的技术。这些逻辑路由器在逻辑上是隔离的，因为它们实现路由设备内的操作和组织隔离，而不需要使用额外的或冗余的硬件，例如附加的基于硬件的路由控制器。路由设备可以例如包括计算平台和在计算平台内执行的多个软件进程，其中软件进程作为逻辑路由器操作。路由设备可以包括由逻辑路由器共享的转发组件，以转发根据转发表从网络接收的网络分组。

2. 发明申请

US20100142370A1 PROTECTING CONNECTION TRAFFIC USING FILTERS 有权
标题翻译：使用过滤器保护连接交通
公开(公告)号：US20100142370A1
公开(公告)日：2010-06-10
申请号：US12705713
申请日：2010-02-15
申请人： Ping PAN , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
发明人： Ping PAN , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
IPC分类号： G06F11/00
CPC分类号： H04L43/0811 , H04L41/0668
摘要： A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending 5 at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
摘要翻译：备份通信网络中的网络节点之间的连接。从连接的第一个网络节点开始创建故障切换标签交换路径（LSP），并在连接的第二个节点处结束5，同时绕过受保护的连接。在连接失败的情况下，通过故障转移LSP传输数据。网络运营商可以通过使用将一个或多个接口上接收到的一种或多种类型的业务绑定到不同的故障切换LSP的过滤器来选择性地保护不同类型的数据。

3. 发明授权

US08619550B2 Protecting connection traffic using filters 有权
标题翻译：使用过滤器保护连接流量
公开(公告)号：US08619550B2
公开(公告)日：2013-12-31
申请号：US13250731
申请日：2011-09-30
申请人： Ping Pan , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
发明人： Ping Pan , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
IPC分类号： G01R31/08
CPC分类号： H04L43/0811 , H04L41/0668
摘要： A connection between network nodes in a communication network is backed up. A failover switched path such as a label-switched path (LSP) is created starting at a first network node of a connection and ending at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover switched path (e.g., LSP). A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover switched paths (LSPs).
摘要翻译：备份通信网络中的网络节点之间的连接。创建从连接的第一个网络节点开始并在连接的第二个节点结束的故障转移交换路径（如标签交换路径（LSP）），同时绕过受保护的连接。在连接失败的情况下，通过故障转移交换路径（例如，LSP）传输数据。网络运营商可以通过使用将通过一个或多个接口接收的一种或多种类型的业务绑定到不同的故障转移交换路径（LSP）的过滤器来选择性地保护不同类型的数据。

4. 发明授权

US08055791B2 Protecting connection traffic using filters 有权
标题翻译：使用过滤器保护连接流量
公开(公告)号：US08055791B2
公开(公告)日：2011-11-08
申请号：US12705713
申请日：2010-02-15
申请人： Ping Pan , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
发明人： Ping Pan , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
IPC分类号： G06F13/00
CPC分类号： H04L43/0811 , H04L41/0668
摘要： A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending 5 at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
摘要翻译：备份通信网络中的网络节点之间的连接。从连接的第一个网络节点开始创建故障切换标签交换路径（LSP），并在连接的第二个节点处结束5，同时绕过受保护的连接。在连接失败的情况下，通过故障转移LSP传输数据。网络运营商可以通过使用将通过一个或多个接口接收的一种或多种类型的业务绑定到不同的故障切换LSP的过滤器来选择性地保护不同类型的数据。

5. 发明申请

US20120020205A1 PROTECTING CONNECTION TRAFFIC USING FILTERS 有权
标题翻译：使用过滤器保护连接交通
公开(公告)号：US20120020205A1
公开(公告)日：2012-01-26
申请号：US13250731
申请日：2011-09-30
申请人： Ping PAN , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
发明人： Ping PAN , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
IPC分类号： H04L12/26
CPC分类号： H04L43/0811 , H04L41/0668
摘要： A connection between network nodes in a communication network is backed up. A failover switched path such as a label-switched path (LSP) is created starting at a first network node of a connection and ending at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover switched path (e.g., LSP). A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover switched paths (LSPs).
摘要翻译：备份通信网络中的网络节点之间的连接。创建从连接的第一个网络节点开始并在连接的第二个节点结束的故障转移交换路径（如标签交换路径（LSP）），同时绕过受保护的连接。在连接失败的情况下，通过故障转移交换路径（例如，LSP）传输数据。网络运营商可以通过使用将通过一个或多个接口接收的一种或多种类型的业务绑定到不同的故障转移交换路径（LSP）的过滤器来选择性地保护不同类型的数据。

6. 发明授权

US07680952B1 Protecting connection traffic using filters 有权
标题翻译：使用过滤器保护连接流量
公开(公告)号：US07680952B1
公开(公告)日：2010-03-16
申请号：US10869501
申请日：2004-06-16
申请人： Ping Pan , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
发明人： Ping Pan , Der-Hwa Gan , Keith E. Holleman , Manoj Leelanivas , Nischal Sheth , Arun Vaidyanathan
IPC分类号： G06F13/00
CPC分类号： H04L43/0811 , H04L41/0668
摘要： A connection between network nodes in a communication network is backed up. A failover label-switched path (LSP) is created starting at a first network node of a connection and ending at the second node of the connection, while bypassing the protected connection. In the event of connection failure, data is transmitted through the failover LSP. A network operator can selectively protect different types of data by using filters that bind one or more types of traffic received over one or more interfaces to different failover LSPs.
摘要翻译：备份通信网络中的网络节点之间的连接。从连接的第一个网络节点开始创建故障转移标签交换路径（LSP），并在连接的第二个节点处结束，同时绕过受保护的连接。在连接失败的情况下，通过故障转移LSP传输数据。网络运营商可以通过使用将通过一个或多个接口接收的一种或多种类型的业务绑定到不同的故障切换LSP的过滤器来选择性地保护不同类型的数据。

7. 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。

8. 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。

9. 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。

10. 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。

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