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1. 发明申请

US20110242968A1 Method and Apparatus for Improving Network Communication Using BFD and VRRP Tracking System 审中-公开
标题翻译：使用BFD和VRRP跟踪系统改善网络通信的方法和装置
公开(公告)号：US20110242968A1
公开(公告)日：2011-10-06
申请号：US13159286
申请日：2011-06-13
申请人： Sasha Cirkovic , Chirayu A. Shah , Balaji Rajagopalan , Anuradha Karuppiah
发明人： Sasha Cirkovic , Chirayu A. Shah , Balaji Rajagopalan , Anuradha Karuppiah
IPC分类号： G06F11/00
CPC分类号： H04L45/28 , H04L43/0811 , H04L45/00 , H04L45/22 , H04L45/30 , H04W40/12
摘要： An apparatus and method of a network system between a host and a group of routers using virtual router redundancy protocol (“VRRP”) messages and bidirectional forwarding detection (“BFD”) sessions are disclosed. The network system is capable of facilitating a first communication between a host and a master router of multiple VRRP routers and establishing a BFD session between the host and the master router. When the BFD session fails, the priority of the master router is subsequently lowered and a backup router is activated. In one embodiment, the backup router capable of performing functions of the master router becomes a new master until the BFD session resumes.
摘要翻译：公开了使用虚拟路由器冗余协议（“VRRP”）消息和双向转发检测（“BFD”）会话的主机与一组路由器之间的网络系统的装置和方法。该网络系统能够促进多台VRRP路由器的主机与主路由器之间的第一次通信，并在主机与主路由器之间建立BFD会话。当BFD会话失败时，主路由器的优先级随后降低，备份路由器被激活。在一个实施例中，能够执行主路由器的功能的备份路由器在BFD会话恢复之前成为新主机。

2. 发明授权

US07990852B1 Methods and apparatus for improving network communication using BFD and VRRP tracking system 有权
标题翻译：使用BFD和VRRP跟踪系统改善网络通信的方法和装置
公开(公告)号：US07990852B1
公开(公告)日：2011-08-02
申请号：US12421847
申请日：2009-04-10
申请人： Sasha Cirkovic , Chirayu A. Shah , Balaji Rajagopalan , Anuradha Karuppiah
发明人： Sasha Cirkovic , Chirayu A. Shah , Balaji Rajagopalan , Anuradha Karuppiah
IPC分类号： G01R31/08 , G06F11/00
CPC分类号： H04L45/28 , H04L43/0811 , H04L45/00 , H04L45/22 , H04L45/30 , H04W40/12
摘要： An apparatus and method of a network system between a host and a group of routers using virtual router redundancy protocol (“VRRP”) messages and bidirectional forwarding detection (“BFD”) sessions are disclosed. The network system is capable of facilitating a first communication between a host and a master router of multiple VRRP routers and establishing a BFD session between the host and the master router. When the BFD session fails, the priority of the master router is subsequently lowered and a backup router is activated. In one embodiment, the backup router capable of performing functions of the master router becomes a new master until the BFD session resumes.
摘要翻译：公开了使用虚拟路由器冗余协议（“VRRP”）消息和双向转发检测（“BFD”）会话的主机与一组路由器之间的网络系统的装置和方法。该网络系统能够促进多台VRRP路由器的主机与主路由器之间的第一次通信，并在主机与主路由器之间建立BFD会话。当BFD会话失败时，主路由器的优先级随后降低，备份路由器被激活。在一个实施例中，能够执行主路由器的功能的备份路由器在BFD会话恢复之前成为新主机。

3. 发明授权

US09288140B2 Multichassis failover and recovery for MLPPP wireless backhaul 有权
标题翻译： MLPPP无线回程的多机架故障切换和恢复
公开(公告)号：US09288140B2
公开(公告)日：2016-03-15
申请号：US13544723
申请日：2012-07-09
申请人： Chirayu A. Shah , Sasha Cirkovic
发明人： Chirayu A. Shah , Sasha Cirkovic
IPC分类号： H04L12/703 , H04L12/775 , H04L12/707
CPC分类号： H04L45/28 , H04L45/24 , H04L45/58
摘要： A procedure, and an apparatus, system and computer program that operate in accordance with the procedure, for operating a dual homed communications network. In the procedure, a backup aggregation n ode is configured in accordance with a configuration of a primary multi-service router. A failure is detected in a first communication path that includes a primary multi-service router. In response to the detection, a second, backup communication path is activated that includes a backup multi-service router. In response to the activation, a router is negotiated with so that traffic forwarded by the router is provided to the second, backup communication path instead of the first communication path.
摘要翻译：根据该过程操作以用于操作双重归属通信网络的过程以及装置，系统和计算机程序。在该过程中，根据主要多业务路由器的配置配置备份聚合。在包括主多业务路由器的第一通信路径中检测到故障。响应于检测，第二备份通信路径被激活，其包括备份多业务路由器。响应于激活，路由器被协商，使得由路由器转发的流量被提供给第二备用通信路径而不是第一通信路径。

4. 发明申请

US20140010073A1 MULTICHASSIS FAILOVER AND RECOVERY FOR MLPPP WIRELESS BACKHAUL 有权
标题翻译： MLPPP无线对讲机的多机构故障恢复和恢复
公开(公告)号：US20140010073A1
公开(公告)日：2014-01-09
申请号：US13544723
申请日：2012-07-09
申请人： Chirayu A. Shah , Sasha Cirkovic
发明人： Chirayu A. Shah , Sasha Cirkovic
IPC分类号： H04L12/56
CPC分类号： H04L45/28 , H04L45/24 , H04L45/58
摘要： A procedure, and an apparatus, system and computer program that operate in accordance with the procedure, for operating a dual homed communications network. In the procedure, a backup aggregation n ode is configured in accordance with a configuration of a primary multi-service router. A failure is detected in a first communication path that includes a primary multi-service router. In response to the detection, a second, backup communication path is activated that includes a backup multi-service router. In response to the activation, a router is negotiated with so that traffic forwarded by the router is provided to the second, backup communication path instead of the first communication path.
摘要翻译：根据该过程操作以用于操作双重归属通信网络的过程以及装置，系统和计算机程序。在该过程中，根据主要多业务路由器的配置配置备份聚合。在包括主多业务路由器的第一通信路径中检测到故障。响应于检测，第二备份通信路径被激活，其包括备份多业务路由器。响应于激活，路由器被协商，使得由路由器转发的流量被提供给第二备用通信路径而不是第一通信路径。

5. 发明申请

US20100208593A1 Method and apparatus for supporting network communications using point-to-point and point-to-multipoint protocols 有权
标题翻译：用于支持使用点对点和点对多点协议的网络通信的方法和装置
公开(公告)号：US20100208593A1
公开(公告)日：2010-08-19
申请号：US12378662
申请日：2009-02-17
申请人： Yee Ming Soon , Chirayu A. Shah
发明人： Yee Ming Soon , Chirayu A. Shah
IPC分类号： G06F11/30 , H04L12/56
CPC分类号： H04L12/287 , H04L12/2859 , H04L12/4633 , H04L45/50 , H04L45/66
摘要： Methods and apparatuses are disclosed for interworking a first protocol, e.g., Provider Backbone Bridge Traffic Engineering (PBB-TE), that provides Ethernet carrier-class traffic engineering, with a second protocol, e.g., Virtual Private LAN Service, that emulates local area network (LAN) service. Unicast, multicast, and broadcast transmissions are enabled across an Ethernet aggregation network and an MPLS core network. Dual homing protection and end-to-end traffic engineering with adjustable granularity are also provided. These capabilities are not available with traditional PBB-TE networks or with an interworking between PBB and VPLS that has been previously proposed. Embodiments of the invention terminate a PBB-TE tunnel at a user-facing provider edge (UPE) node and attach instance service identifiers (ISIDs) to different virtual switching instances (VSI)s. As a result, inexpensive Ethernet-only aggregation networks can be designed to interoperate with VPLS with increased reliability and control, benefiting service providers and end users.
摘要翻译：公开了用于互通第一协议的方法和装置，例如，提供以太网电信级流量工程的提供商骨干网桥流量工程（PBB-TE）与第二协议（例如，虚拟专用LAN服务），模拟局域网（LAN）服务。单播，组播和广播传输在以太网聚合网络和MPLS核心网络之间启用。还提供双重归位保护和可调颗粒度的端到端流量工程。这些功能不适用于传统的PBB-TE网络，也不适用于以前提出的PBB和VPLS之间的互通。本发明的实施例在面向用户的提供商边缘（UPE）节点处终止PBB-TE隧道，并将实例服务标识符（ISID）附加到不同的虚拟交换实例（VSI）。因此，廉价的仅适用于以太网的聚合网络可以设计为与VPLS进行互操作，具有更高的可靠性和控制性，有利于服务提供商和终端用户。

6. 发明授权

US08553581B2 Method and apparatus for provisioning a network element 有权
标题翻译：用于配置网元的方法和装置
公开(公告)号：US08553581B2
公开(公告)日：2013-10-08
申请号：US12378661
申请日：2009-02-17
申请人： Yee Ming Soon , Chirayu A. Shah
发明人： Yee Ming Soon , Chirayu A. Shah
IPC分类号： H04L12/28
CPC分类号： H04L41/0806 , H04L12/462 , H04L12/4654 , H04L12/4658 , H04L12/4662
摘要： Methods and apparatuses are disclosed for configuring a Provider Backbone Bridge (PBB) interface within Virtual Private LAN Service using Multi-Protocol Border Gateway Protocol (MP-BGP). Previously, the only ways to enable PBB interfaces for transmission were by learning, which poses security and scalability concerns due to flooding, or by manual configuration, which is impractical for large networks. Embodiments of the present invention enable custom topologies to be built in a controlled manner, which has not previously been possible for PBB over VPLS. By using MP-BGP messages to exchange PBB interface information between nodes, peering relationships are established, and communities may be built with any desired topology. Previously, PBB has only been used as a connectionless bridge; embodiments of the present invention use PBB as a connection between edge nodes. Network designers are provided increased flexibility, and security and congestion are improved, benefiting end users.
摘要翻译：公开了用于使用多协议边界网关协议（MP-BGP）在虚拟专用LAN服务内配置提供商骨干网桥（PBB）接口的方法和装置。以前，PBB接口进行传输的唯一方法是通过学习，这会导致由于洪泛而导致的安全性和可扩展性问题，或手动配置，这对于大型网络来说是不切实际的。本发明的实施例使得定制拓扑能够以受控的方式构建，这对于PBB over VPLS来说以前是不可能的。通过使用MP-BGP消息在节点之间交换PBB接口信息，建立对等关系，并且可以使用任何所需的拓扑构建社区。以前，PBB仅用作无连接桥; 本发明的实施例使用PBB作为边缘节点之间的连接。网络设计师提供了更多的灵活性，安全性和拥塞得到改善，使终端用户受益。

7. 发明申请

US20120069742A1 Method and Apparatus for Network OAM Interworking 有权
标题翻译：网络OAM互通的方法和装置
公开(公告)号：US20120069742A1
公开(公告)日：2012-03-22
申请号：US12887901
申请日：2010-09-22
申请人： William A. Kaufmann , Douglas J. Hawn , Chirayu A. Shah , Bruce M. Lasley , Ian P. Butler , Jason T. Ledgerwood Jesseph
发明人： William A. Kaufmann , Douglas J. Hawn , Chirayu A. Shah , Bruce M. Lasley , Ian P. Butler , Jason T. Ledgerwood Jesseph
IPC分类号： H04L12/26
CPC分类号： H04L43/0811 , H04L41/022
摘要： Network service providers have largely addressed the growth in demand for communications networks in two ways: employing faster and more robust communications protocols through equipment upgrades and increasing use of Operations, Administrations, and Management (OAM) procedures for improved network performance. Typically, OAM operations procedures used by a network protocol are unique to that protocol and are not compatible with other network protocols. Service providers with networks that use multiple communications protocols, such as networks using legacy and newly installed equipment, can have difficulty ensuring optimal performance due to non-compatible OAM operations. A method, and corresponding apparatus, for supporting OAM interworking between first and second communications protocols used in an interworking circuit of a communications network is disclosed. The method, or corresponding apparatus, allows network service providers to ensure optimal network performance in a manner that does not affect customer traffic, is transparent to customers, and can be seamlessly integrated into existing interworking network nodes.
摘要翻译：网络服务提供商主要通过两种方式来解决通信网络需求的增长：通过设备升级采用更快更强大的通信协议，并增加使用操作，管理和管理（OAM）程序来提高网络性能。通常，网络协议使用的OAM操作过程对于该协议是唯一的，并且与其他网络协议不兼容。具有使用多种通信协议的网络的服务提供商（例如使用传统和新安装的设备的网络）可能难以确保由于不兼容的OAM操作而导致的最佳性能。公开了一种用于支持在通信网络的互通电路中使用的第一和第二通信协议之间的OAM互配的方法和相应装置。该方法或相应的装置允许网络服务提供商以不影响客户流量的方式确保最佳网络性能，对客户是透明的，并且可以无缝集成到现有的互通网络节点中。

8. 发明申请

US20100208615A1 Method and apparatus for provisioning a network element 有权
标题翻译：用于配置网元的方法和装置
公开(公告)号：US20100208615A1
公开(公告)日：2010-08-19
申请号：US12378661
申请日：2009-02-17
申请人： Yee Ming Soon , Chirayu A. Shah
发明人： Yee Ming Soon , Chirayu A. Shah
IPC分类号： H04L12/28
CPC分类号： H04L41/0806 , H04L12/462 , H04L12/4654 , H04L12/4658 , H04L12/4662
摘要： Methods and apparatuses are disclosed for configuring a Provider Backbone Bridge (PBB) interface within Virtual Private LAN Service using Multi-Protocol Border Gateway Protocol (MP-BGP). Previously, the only ways to enable PBB interfaces for transmission were by learning, which poses security and scalability concerns due to flooding, or by manual configuration, which is impractical for large networks. Embodiments of the present invention enable custom topologies to be built in a controlled manner, which has not previously been possible for PBB over VPLS. By using MP-BGP messages to exchange PBB interface information between nodes, peering relationships are established, and communities may be built with any desired topology. Previously, PBB has only been used as a connectionless bridge; embodiments of the present invention use PBB as a connection between edge nodes. Network designers are provided increased flexibility, and security and congestion are improved, benefiting end users.
摘要翻译：公开了用于使用多协议边界网关协议（MP-BGP）在虚拟专用LAN服务内配置提供商骨干网桥（PBB）接口的方法和装置。以前，PBB接口进行传输的唯一方法是通过学习，这会导致由于洪泛而导致的安全性和可扩展性问题，或手动配置，这对大型网络来说是不切实际的。本发明的实施例使得定制拓扑能够以受控的方式构建，这对于PBB over VPLS来说以前是不可能的。通过使用MP-BGP消息在节点之间交换PBB接口信息，建立对等关系，并且可以使用任何所需的拓扑构建社区。以前，PBB仅用作无连接桥; 本发明的实施例使用PBB作为边缘节点之间的连接。网络设计师提供了更多的灵活性，安全性和拥塞得到改善，使终端用户受益。

9. 发明授权

US08897145B2 Method and apparatus for network OAM interworking 有权
标题翻译：网络OAM互通的方法和装置
公开(公告)号：US08897145B2
公开(公告)日：2014-11-25
申请号：US12887901
申请日：2010-09-22
申请人： William A. Kaufmann , Douglas J. Hawn , Chirayu A. Shah , Bruce M. Lasley , Ian P. Butler , Jason T. Ledgerwood Jesseph
发明人： William A. Kaufmann , Douglas J. Hawn , Chirayu A. Shah , Bruce M. Lasley , Ian P. Butler , Jason T. Ledgerwood Jesseph
IPC分类号： H04L1/00 , H04L12/26 , H04L12/24
CPC分类号： H04L43/0811 , H04L41/022
摘要： Network service providers have largely addressed the growth in demand for communications networks in two ways: employing faster and more robust communications protocols through equipment upgrades and increasing use of Operations, Administrations, and Management (OAM) procedures for improved network performance. Typically, OAM operations procedures used by a network protocol are unique to that protocol and are not compatible with other network protocols. Service providers with networks that use multiple communications protocols, such as networks using legacy and newly installed equipment, can have difficulty ensuring optimal performance due to non-compatible OAM operations. A method, and corresponding apparatus, for supporting OAM interworking between first and second communications protocols used in an interworking circuit of a communications network is disclosed. The method, or corresponding apparatus, allows network service providers to ensure optimal network performance in a manner that does not affect customer traffic, is transparent to customers, and can be seamlessly integrated into existing interworking network nodes.
摘要翻译：网络服务提供商主要通过两种方式来解决通信网络需求的增长：通过设备升级采用更快更强大的通信协议，并增加使用操作，管理和管理（OAM）程序来提高网络性能。通常，网络协议使用的OAM操作过程对于该协议是唯一的，并且与其他网络协议不兼容。具有使用多种通信协议的网络的服务提供商（例如使用传统和新安装的设备的网络）可能难以确保由于不兼容的OAM操作而导致的最佳性能。公开了一种用于支持在通信网络的互通电路中使用的第一和第二通信协议之间的OAM互配的方法和相应装置。该方法或相应的装置允许网络服务提供商以不影响客户流量的方式确保最佳网络性能，对客户是透明的，并且可以无缝集成到现有的互通网络节点中。

10. 发明授权

US08059549B2 Method and apparatus for supporting network communications using point-to-point and point-to-multipoint protocols 有权
标题翻译：用于支持使用点对点和点对多点协议的网络通信的方法和装置
公开(公告)号：US08059549B2
公开(公告)日：2011-11-15
申请号：US12378662
申请日：2009-02-17
申请人： Yee Ming Soon , Chirayu A. Shah
发明人： Yee Ming Soon , Chirayu A. Shah
IPC分类号： G06F11/00
CPC分类号： H04L12/287 , H04L12/2859 , H04L12/4633 , H04L45/50 , H04L45/66
摘要： Methods and apparatuses are disclosed for interworking a first protocol, e.g., Provider Backbone Bridge Traffic Engineering (PBB-TE), that provides Ethernet carrier-class traffic engineering, with a second protocol, e.g., Virtual Private LAN Service, that emulates local area network (LAN) service. Unicast, multicast, and broadcast transmissions are enabled across an Ethernet aggregation network and an MPLS core network. Dual homing protection and end-to-end traffic engineering with adjustable granularity are also provided. These capabilities are not available with traditional PBB-TE networks or with an interworking between PBB and VPLS that has been previously proposed. Embodiments of the invention terminate a PBB-TE tunnel at a user-facing provider edge (UPE) node and attach instance service identifiers (ISIDs) to different virtual switching instances (VSI)s. As a result, inexpensive Ethernet-only aggregation networks can be designed to interoperate with VPLS with increased reliability and control, benefiting service providers and end users.
摘要翻译：公开了用于互通第一协议的方法和装置，例如，提供以太网电信级流量工程的提供商骨干网桥流量工程（PBB-TE）与第二协议（例如，虚拟专用LAN服务），模拟局域网（LAN）服务。单播，组播和广播传输在以太网聚合网络和MPLS核心网络之间启用。还提供双重归位保护和可调颗粒度的端到端流量工程。这些功能不适用于传统的PBB-TE网络，也不适用于以前提出的PBB和VPLS之间的互通。本发明的实施例在面向用户的提供商边缘（UPE）节点处终止PBB-TE隧道，并将实例服务标识符（ISID）附加到不同的虚拟交换实例（VSI）。因此，廉价的仅适用于以太网的聚合网络可以设计为与VPLS进行互操作，具有更高的可靠性和控制性，有利于服务提供商和终端用户。

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