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11. 发明申请

US20110026533A1 METHOD AND APPARATUS FOR ADVERTISING UPDATE MESSAGES TO PEERS AND PEER GROUPS IN A BORDER GATEWAY PROTOCOL PROCESS 有权
标题翻译：在边界网关协议过程中向对等体和对等体组织更新消息的方法和装置
公开(公告)号：US20110026533A1
公开(公告)日：2011-02-03
申请号：US12533666
申请日：2009-07-31
申请人： Gargi Nalawade
发明人： Gargi Nalawade
IPC分类号： H04L12/56 , G06F15/16
CPC分类号： H04L67/104 , H04L45/00 , H04L45/025 , H04L45/04
摘要： A method is disclosed for advertising update messages to peers and peer entities. In an embodiment, all update messages that are to be advertised to a specific peer entity are formatted and enqueued to a peer associated with that peer entity before update messages are formatted for another peer entity. In an aspect, the method advertises update messages to peer entities in a communication network comprises, among a quantity of update messages, formatting one or more of the update messages to establish a quantity of formatted update messages for a peer entity, wherein said peer entity is one of a peer group and a peer, wherein the quantity of the formatted update messages is less than or equal to the quantity of update messages, and among the formatted update messages, enqueueing to a queue, one or more formatted update messages, to establish a quantity of enqueued formatted update messages, wherein the quantity of enqueued formatted update messages is less or equal to the quantity of formatted update messages, and wherein at least one of the quantity of formatted update messages and the quantity of the enqueued formatted update messages is a programmable quantity.
摘要翻译：公开了一种用于向对等体和对等实体广告更新消息的方法。在一个实施例中，对于另一个对等实体格式化更新消息之前，将被通告给特定对等实体的所有更新消息被格式化并入队列到与该对等体实体相关联的对等体。在一方面中，向通信网络中的对等实体通告更新消息的方法包括：在多个更新消息中，格式化一个或多个更新消息，以建立对等实体的格式化更新消息的数量，其中所述对等实体是对等体组和对等体之一，其中格式化的更新消息的数量小于或等于更新消息的数量，并且在格式化的更新消息中排队到队列，一个或多个格式化的更新消息到建立一定数量的入队格式化的更新消息，其中排队格式化的更新消息的数量小于或等于格式化的更新消息的数量，并且其中格式化的更新消息的数量和入队的格式化的更新消息的数量中的至少一个是一个可编程的数量。

12. 发明授权

US07633874B1 Soft notification messaging for a routing protocol 有权
标题翻译：路由协议的软通知消息
公开(公告)号：US07633874B1
公开(公告)日：2009-12-15
申请号：US10833811
申请日：2004-04-28
申请人： Gargi Nalawade , Keyur P. Patel , John Galen Scudder , David D. Ward
发明人： Gargi Nalawade , Keyur P. Patel , John Galen Scudder , David D. Ward
IPC分类号： G06F11/00 , G01R31/08 , G08C15/00 , G06F15/173
CPC分类号： H04L45/00 , H04L45/04
摘要： A soft notification technique isolates address family application based errors or events occurring within a routing protocol, such as the Border Gateway Protocol (BGP), used to exchange routing information between a router and its peer router over a BGP session operating on a reliable transport. The technique apportions the session into a plurality of logical subsets, each of which is associated with an address family application (AFI/SAFI) module of a BGP protocol executing on the routers. BGP soft notification messaging is employed to allow the router to notify its peer of an isolated error condition or event associated with an AFI/SAFI module. Isolation of the error/event enables restart (“soft reset”) of only the associated AFI/SAFI module, thereby obviating the need to reset or terminate the entire BGP session and reliable transport between the router and peer. Notably, soft reset of the module occurs without disrupting services provided by other AFI/SAFI modules of the BGP protocol.
摘要翻译：软通知技术隔离在路由协议（如边界网关协议（BGP））中发生的地址族应用程序错误或事件，用于通过在可靠传输上运行的BGP会话在路由器与其对等路由器之间交换路由信息。该技术将会话分配到多个逻辑子集中，每个逻辑子集与在路由器上执行的BGP协议的地址族应用（AFI / SAFI）模块相关联。使用BGP软通知消息传递来允许路由器通知其对等体与AFI / SAFI模块相关联的隔离的错误状况或事件。隔离错误/事件只能使相关的AFI / SAFI模块重新启动（“软复位”），从而避免重置或终止整个BGP会话以及路由器和对等体之间的可靠传输。值得注意的是，模块的软复位不会中断BGP协议的其他AFI / SAFI模块提供的服务。

13. 发明申请

US20080062986A1 Providing reachability information in a routing domain of an external destination address in a data communications network 有权
标题翻译：在数据通信网络中的外部目的地地址的路由域中提供可达性信息
公开(公告)号：US20080062986A1
公开(公告)日：2008-03-13
申请号：US11518383
申请日：2006-09-08
申请人： Mike Shand , Stewart F. Bryant , David D. Ward , Gargi Nalawade , Keyur Patel , Clarence Filsfils , Stefano B. Previdi , Robert Raszuk
发明人： Mike Shand , Stewart F. Bryant , David D. Ward , Gargi Nalawade , Keyur Patel , Clarence Filsfils , Stefano B. Previdi , Robert Raszuk
IPC分类号： H04L12/56
CPC分类号： H04L45/22 , H04L45/02 , H04L45/04 , H04L45/28
摘要： An apparatus for providing reachability in a routing domain of a data communications network having as components nodes and links therebetween for a routing domain—external destination address is described. The apparatus is arranged to advertise destination address reachability internally to nodes in the routing domain and associate a reachability category with said internal advertisement of said destination address reachability.
摘要翻译：描述了一种用于在数据通信网络的路由域中提供可达性的装置，其具有用于路由域 - 外部目的地地址之间的节点和链路之间的组件。该装置被布置为在内部向路由域中的节点通告目的地址可达性，并将可达性类别与所述目的地址可达性的所述内部广告相关联。

14. 发明申请

US20060133298A1 Selectively sending link state messages in a network link state protocol based on interest of network nodes 有权
标题翻译：基于网络节点的兴趣在网络链路状态协议中选择性地发送链路状态消息
公开(公告)号：US20060133298A1
公开(公告)日：2006-06-22
申请号：US11023292
申请日：2004-12-22
申请人： Sandy Ng , Gargi Nalawade , Steven Luong
发明人： Sandy Ng , Gargi Nalawade , Steven Luong
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/02
摘要： In a link state protocol such as an interior gateway protocol (IGP), link state advertisements or link state packets (LSA/LSPs) are sent only to network nodes that have expressed interest in them, rather than always flooding them.
摘要翻译：在诸如内部网关协议（IGP）的链路状态协议中，链路状态通告或链路状态分组（LSA / LSP）仅被发送到对它们表示兴趣的网络节点，而不是总是淹没它们。

15. 发明申请

US20060088031A1 Method and apparatus for providing multicast messages within a virtual private network across a data communication network 有权
公开(公告)号：US20060088031A1
公开(公告)日：2006-04-27
申请号：US10974419
申请日：2004-10-26
申请人： Gargi Nalawade
发明人： Gargi Nalawade
IPC分类号： H04L12/56 , H04L12/54
CPC分类号： H04L12/185 , H04L12/4633 , H04L12/4641 , H04L45/16
摘要： A method and apparatus for providing multicast messages across a data communication network, the method comprising the computer-implemented steps of: receiving a multicast join message; adding to the multicast join message a next hop and an address of a router to which the multicast message is to be sent; forwarding the multicast message based on the next hop address.

16. 发明授权

US08619774B2 Method and apparatus for providing multicast messages within a virtual private network across a data communication network 有权
标题翻译：用于在数据通信网络内的虚拟专用网络内提供多播消息的方法和装置
公开(公告)号：US08619774B2
公开(公告)日：2013-12-31
申请号：US10974419
申请日：2004-10-26
申请人： Gargi Nalawade
发明人： Gargi Nalawade
IPC分类号： H04L12/56
CPC分类号： H04L12/185 , H04L12/4633 , H04L12/4641 , H04L45/16
摘要： A method and apparatus for providing multicast messages across a data communication network, the method comprising the computer-implemented steps of: receiving a multicast join message; adding to the multicast join message a next hop and an address of a router to which the multicast message is to be sent; forwarding the multicast message based on the next hop address.
摘要翻译：一种用于通过数据通信网络提供多播消息的方法和装置，所述方法包括以下计算机实现的步骤：接收多播加入消息; 向组播加入消息中添加下一跳和要发送组播消息的路由器的地址; 基于下一跳地址转发组播消息。

17. 发明授权

US07864669B2 Method of constructing a backup path in an autonomous system 有权
标题翻译：在自治系统中构建备份路径的方法
公开(公告)号：US07864669B2
公开(公告)日：2011-01-04
申请号：US11254587
申请日：2005-10-20
申请人： Olivier Bonaventure , Pierre Francois , Clarence Filsfils , Stewart Bryant , David D. Ward , John Galen Scudder , Stefano B. Previdi , Ian Michael Charles Shand , Gargi Nalawade
发明人： Olivier Bonaventure , Pierre Francois , Clarence Filsfils , Stewart Bryant , David D. Ward , John Galen Scudder , Stefano B. Previdi , Ian Michael Charles Shand , Gargi Nalawade
IPC分类号： H04L12/26
CPC分类号： H04L45/22 , H04L45/04 , H04L45/28 , H04L2212/00
摘要： A method of constructing a backup path in an autonomous system (AS) for failure of an inter-AS link is described. The method comprises identifying an alternate inter-AS path and constructing a tunnel to an end point on the alternate path.
摘要翻译：描述了在自治系统（AS）中构建用于AS间链路故障的备用路径的方法。该方法包括识别替代的AS间路径并构建到备用路径上的终点的隧道。

18. 发明授权

US07688714B2 Network routing apparatus that performs soft graceful restart 有权
标题翻译：执行软平滑重启的网络路由设备
公开(公告)号：US07688714B2
公开(公告)日：2010-03-30
申请号：US11395986
申请日：2006-03-30
申请人： Gargi Nalawade , Keyur Patel , Ruchi Kapoor
发明人： Gargi Nalawade , Keyur Patel , Ruchi Kapoor
IPC分类号： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26 , H04L12/28 , H04L12/56 , G06F15/173
CPC分类号： H04L45/28 , H04L45/02 , H04L45/52 , H04L45/563
摘要： A network data packet routing apparatus with BGP is configured to soft reset an AFI or SAFI, so that forwarding on routes associated with the AFI or SAFI can continue even after an event or error. One approach involves establishing a Border Gateway Protocol (BGP) peering session between a first node and a second node in a packet-switched network; detecting a BGP condition requiring a reset of a BGP address family indicator (AFI) data structure or a sub-address family indicator (SAFI) data structure, wherein the BGP condition does not affect states of routes in the AFI or SAFI; preserving a BGP state and a forwarding state of the AFI or SAFI; and forwarding data on routes represented in the AFI or SAFI. Soft notification messaging and marking routes as stale facilitates the approach.
摘要翻译：具有BGP的网络数据分组路由设备被配置为软复位AFI或SAFI，使得即使在事件或错误之后，与AFI或SAFI相关联的路由上的转发也可以继续。一种方法涉及在分组交换网络中的第一节点和第二节点之间建立边界网关协议（BGP）对等体会话; 检测需要复位BGP地址族指示符（AFI）数据结构或子地址族指示符（SAFI）数据结构的BGP条件，其中BGP条件不影响AFI或SAFI中的路由状态; 保持BGP状态和AFI或SAFI的转发状态; 并转发AFI或SAFI所代表的路由数据。软通知消息和标记路由为陈旧方便。

19. 发明授权

US07571241B1 Method and apparatus for advertising update messages to peers and peer groups in a border gateway protocol process 有权
标题翻译：用于在边界网关协议进程中向对等体和对等体组通告更新消息的方法和装置
公开(公告)号：US07571241B1
公开(公告)日：2009-08-04
申请号：US10616555
申请日：2003-07-09
申请人： Gargi Nalawade
发明人： Gargi Nalawade
IPC分类号： G06F15/16
CPC分类号： H04L45/02
摘要： A method is disclosed for advertising update messages to peers and peer entities. In an embodiment, all update messages that are to be advertised to a specific peer entity are formatted and enqueued to a peer associated with that peer entity before update messages are formatted for another peer entity. In an aspect, the method advertises update messages to peer entities in a communication network comprises, among a quantity of update messages, formatting one or more of the update messages to establish a quantity of formatted update messages for a peer entity, wherein said peer entity is one of a peer group and a peer, wherein the quantity of the formatted update messages is less than or equal to the quantity of update messages, and among the formatted update messages, enqueueing to a queue, one or more formatted update messages, to establish a quantity of enqueued formatted update messages, wherein the quantity of enqueued formatted update messages is less or equal to the quantity of formatted update messages, and wherein at least one of the quantity of formatted update messages and the quantity of the enqueued formatted update messages is a programmable quantity.
摘要翻译：公开了一种用于向对等体和对等实体广告更新消息的方法。在一个实施例中，对于另一个对等实体格式化更新消息之前，将被通告给特定对等实体的所有更新消息被格式化并入队列到与该对等体实体相关联的对等体。在一方面中，向通信网络中的对等实体通告更新消息的方法包括：在多个更新消息中，格式化一个或多个更新消息，以建立对等实体的格式化更新消息的数量，其中所述对等实体是对等体组和对等体之一，其中格式化的更新消息的数量小于或等于更新消息的数量，并且在格式化的更新消息中排队到队列，一个或多个格式化的更新消息到建立一定数量的入队格式化的更新消息，其中排队格式化的更新消息的数量小于或等于格式化的更新消息的数量，并且其中格式化的更新消息的数量和入队的格式化的更新消息的数量中的至少一个是一个可编程的数量。

20. 发明授权

US07506194B2 Routing system and method for transparently rocovering routing states after a failover or during a software upgrade 有权
标题翻译：在故障转移或软件升级之后透明地恢复路由状态的路由系统和方法
公开(公告)号：US07506194B2
公开(公告)日：2009-03-17
申请号：US10808040
申请日：2004-03-24
申请人： Chandrashekhar Appanna , Ruchi Kapoor , Barry Friedman , Himanshu Shah , Gargi Nalawade , Shyam Suri , John Harper
发明人： Chandrashekhar Appanna , Ruchi Kapoor , Barry Friedman , Himanshu Shah , Gargi Nalawade , Shyam Suri , John Harper
IPC分类号： G06F11/00
CPC分类号： H04L45/00 , G06F11/2028 , G06F11/2033 , H04L41/0654 , H04L45/28 , H04L45/58 , H04L45/586
摘要： Methods and apparatus for efficiently enabling routing states to be recovered after a failover or during a software upgrade in a system which supports graceful restart and stateful switchover are disclosed. According to one aspect of the present invention, a method for restarting a network device which has a plurality of routers and is in communication with a first peer being arranged to support graceful restart and a second peer includes performing a graceful restart with respect to the first peer. A peer transparent failover is performed with respect to the second peer. The graceful restart and the peer transparent failover are performed in response to a failure associated with the network device.
摘要翻译：公开了在支持平滑重启和状态切换的系统中，在故障切换或软件升级之后有效地恢复路由状态的方法和装置。根据本发明的一个方面，一种重新启动网络设备的方法，该网络设备具有多个路由器并与第一对等体进行通信，以配置为支持平滑重启和第二对等体包括相对于第一同行相对于第二对等体执行对等体透明的故障转移。响应于与网络设备相关联的故障，执行平滑重启和对等体透明故障转移。

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