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11. 发明授权

US07885294B2 Signaling compression information using routing protocols 有权
标题翻译：使用路由协议的信令压缩信息
公开(公告)号：US07885294B2
公开(公告)日：2011-02-08
申请号：US11844119
申请日：2007-08-23
申请人： Keyur Patel , Abhay Roy , Robert Raszuk
发明人： Keyur Patel , Abhay Roy , Robert Raszuk
IPC分类号： H04J3/18
CPC分类号： H04L45/04 , H04L69/04
摘要： An ability to compress packets is announced from a customer edge router (CE) to other CEs through a routing protocol packet. An announcement of that ability is received from another CE through a routing protocol packet. A compression technique is then matched. The CE receives compression information from the other CE in a routing protocol packet, and determines that a compression technique identified therein matches any compression technique the CE is programmed to use. The CE then flags packets transmitted from/received by the CE to be compressed/decompressed according to the matched compression technique. Alternatively, the CE may match by transmitting compression information identifying a compression technique to the another CE in a routing protocol packet; the another CE receives the routing protocol packet and determines that a compression technique identified in the compression information of the routing protocol packet matches any compression technique the another CE is programmed to use.
摘要翻译：通过路由协议包从客户边缘路由器（CE）到其他CE，宣布压缩数据包的能力。通过路由协议包从另一个CE接收到该能力的通知。然后匹配压缩技术。 CE在路由协议分组中从其他CE接收压缩信息，并确定其中识别的压缩技术与CE被编程使用的任何压缩技术相匹配。 CE然后根据匹配的压缩技术标记由CE发送/接收的数据包以进行压缩/解压缩。或者，CE可以通过在路由协议分组中向另一CE发送标识压缩技术的压缩信息来匹配; 另一个CE接收路由协议分组，并确定在路由协议分组的压缩信息中识别的压缩技术与另一个CE被编程使用的任何压缩技术匹配。

12. 发明授权

US07688819B2 Faster routing protocol convergence using efficient message markup 有权
标题翻译：使用有效的消息标记更快地路由协议收敛
公开(公告)号：US07688819B2
公开(公告)日：2010-03-30
申请号：US11369262
申请日：2006-03-06
申请人： Anantha Ramaiah , Keyur Patel , David D. Ward , Robert Raszuk
发明人： Anantha Ramaiah , Keyur Patel , David D. Ward , Robert Raszuk
IPC分类号： H04L12/28 , H04L12/56
CPC分类号： H04L45/04 , H04L45/02
摘要： Devices executing routing protocols can mark routing protocol messages as urgent so that peer devices are signaled to consume the messages on an expedited basis. Performance of routing protocols improves as a result; for example, Border Gateway Protocol convergence time is reduced. An example router comprises a network interface, a processor, a transport layer protocol module that implements a transport layer network protocol, a routing protocol module that implements a network packet routing protocol and sends peering session messages over transport layer connections, and instructions to perform providing a first routing protocol message to the transport layer protocol module that comprises urgent data at least in part; requesting the transport layer protocol module to mark, as urgent, one or more data segments that carry the first routing protocol message; marking, as urgent, one or more segments that carry the first routing protocol message; and sending the segments to peer devices over the connections.
摘要翻译：执行路由协议的设备可以将路由协议消息标记为紧急，以便对等设备进行信号通知以快速消费消息。因此，路由协议的性能得到改善; 例如，边界网关协议收敛时间减少。示例路由器包括网络接口，处理器，实现传输层网络协议的传输层协议模块，实现网络分组路由协议并通过传输层连接发送对等会话消息的路由协议模块，以及执行提供的指令至少部分地包括紧急数据的传输层协议模块的第一路由协议消息; 请求传输层协议模块紧急地标记携带第一路由协议消息的一个或多个数据段; 标记为紧急的携带第一路由协议消息的一个或多个段; 并通过连接将段发送到对等设备。

13. 发明授权

US07675912B1 Method and apparatus for border gateway protocol (BGP) auto discovery 有权
标题翻译：边界网关协议（BGP）自动发现的方法和装置
公开(公告)号：US07675912B1
公开(公告)日：2010-03-09
申请号：US11175461
申请日：2005-07-05
申请人： David D. Ward , Robert Raszuk , Keyur Patel
发明人： David D. Ward , Robert Raszuk , Keyur Patel
IPC分类号： H04L12/28
CPC分类号： H04L45/04 , H04L45/02 , H04L45/026
摘要： A method is disclosed for Border Gateway Protocol (BGP) service auto discovery. A first message is received from a first BGP host. The first message comprises first information that indicates that the first BGP host provides reachability information associated with one or more route types. The first information is stored. The first information is sent in a second message to a second BGP host, where the first BGP host and the second BGP host are not conducting a BGP peering session.
摘要翻译：公开了一种用于边界网关协议（BGP）服务自动发现的方法。从第一个BGP主机接收到第一个消息。第一消息包括指示第一BGP主机提供与一个或多个路由类型相关联的可达性信息的第一信息。第一个信息被存储。第一个信息被发送到第二个BGP主机，第二个BGP主机和第二个BGP主机不进行BGP对等体会话。

14. 发明申请

US20080219153A1 Constructing a repair path in the event of failure of an inter-routing domain system link 有权
标题翻译：在路由间域网系统链路故障的情况下构建修复路径
公开(公告)号：US20080219153A1
公开(公告)日：2008-09-11
申请号：US11518405
申请日：2006-09-08
申请人： Mike Shand , Stewart F. Bryant , David D. Ward , Gargi Nalawade , Keyur Patel , Stefano B. Previdi , Robert Raszuk
发明人： Mike Shand , Stewart F. Bryant , David D. Ward , Gargi Nalawade , Keyur Patel , Stefano B. Previdi , Robert Raszuk
IPC分类号： G01R31/08
CPC分类号： H04L45/22 , H04L45/04 , H04L45/28
摘要： An apparatus and method as described for constructing a repair path for use in the event of failure of an inter-routing domain connection between respective components in first and second routing domains of a data communications network. The apparatus is arranged to assign a propagatable repair address for use in the event of failure of the inter-routing domain connection and to propagate the repair address via data communications network components other than the inter-routing domain connection.
摘要翻译：描述的用于构建修复路径的装置和方法，用于在数据通信网络的第一和第二路由域中的各个组件之间的路由间域间连接发生故障的情况下使用。该装置被配置为分配可传播的修复地址，用于在路由间连接域连接失败的情况下使用，并且经由除了路由间连接之外的数据通信网络组件来传播修复地址。

15. 发明申请

US20120281539A1 Detecting and Avoiding Routing Loops with BGP Route Server Extensions 有权
标题翻译：使用BGP路由服务器扩展检测和避免路由环路
公开(公告)号：US20120281539A1
公开(公告)日：2012-11-08
申请号：US13098628
申请日：2011-05-02
申请人： Keyur Patel , Robert Raszuk , Ryan Bickhart , Alton Lo
发明人： Keyur Patel , Robert Raszuk , Ryan Bickhart , Alton Lo
IPC分类号： H04L12/26
CPC分类号： H04L45/026 , H04L45/04
摘要： In an embodiment, a method comprises: receiving, at a data packet router, a path advertisement comprising information about an available path; determining whether the path advertisement comprises an originator identifier of an originator of the available path; in response to determining that the path advertisement comprises the originator identifier of the originator of the available path, determining whether the originator identifier of the available path is a router identifier of the data packet router, and in response to determining that the originator identifier of the available path is the router identifier of the data packet router, not accepting the path advertisement; wherein the method is performed by one or more processors of the data packet router.
摘要翻译：在一个实施例中，一种方法包括：在数据分组路由器处接收包括关于可用路径的信息的路径通告; 确定路径广告是否包括可用路径的始发者的始发者标识符; 响应于确定路径广告包括可用路径的发起者的始发者标识符，确定可用路径的始发者标识符是否是数据分组路由器的路由器标识符，并且响应于确定所述可用路径的始发者标识符可用路径是数据包路由器的路由器标识符，不接受路径广告; 其中所述方法由所述数据分组路由器的一个或多个处理器执行。

16. 发明授权

US07318108B2 Method and apparatus providing prioritized convergence in border gateway protocol 有权
标题翻译：在边界网关协议中提供优先收敛的方法和装置
公开(公告)号：US07318108B2
公开(公告)日：2008-01-08
申请号：US11023056
申请日：2004-12-22
申请人： Arjun Sreekantiah , Ruchi Kapoor , Keyur Patel , Robert Raszuk
发明人： Arjun Sreekantiah , Ruchi Kapoor , Keyur Patel , Robert Raszuk
IPC分类号： G06F15/173
CPC分类号： H04L45/02 , H04L45/04
摘要： A method is disclosed for providing prioritized routing table convergence in Border Gateway Protocol (BGP) hosts, as part of a BGP process that is executed by a route processor in a network, wherein the processor hosts a plurality of BGP routing tables each associated with a specified sub-address family (SAFI). A convergence priority order value is created and stored in association with each routing table. As part of performing a convergence phase of BGP processing, the convergence priority order value of each routing table is obtained. The convergence phase is then performed for the routing tables only according to an order that is represented by the convergence priority order values. Therefore, convergence proceeds more quickly and values needed by other routing processes become available earlier.
摘要翻译：公开了一种用于在边界网关协议（BGP）主机中提供优先级路由表收敛的方法，作为由网络中的路由处理器执行的BGP进程的一部分，其中处理器承载多个BGP路由表，每个BGP路由表与指定的子地址族（SAFI）。与每个路由表相关联地创建和存储收敛优先级顺序值。作为执行BGP处理收敛阶段的一部分，获得每个路由表的收敛优先级顺序值。然后，仅根据由收敛优先级顺序值表示的顺序为路由表执行收敛阶段。因此，收敛进展得更快，其他路由进程所需的值越来越早。

17. 发明申请

US20060233181A1 Method and apparatus for accelerating border gateway protocol convergence 有权
公开(公告)号：US20060233181A1
公开(公告)日：2006-10-19
申请号：US11106414
申请日：2005-04-13
申请人： Robert Raszuk , Rex Fernando , Himanshu Shah , Keyur Patel
发明人： Robert Raszuk , Rex Fernando , Himanshu Shah , Keyur Patel
IPC分类号： H04L12/28
CPC分类号： H04L45/28 , H04L45/02 , H04L45/04 , H04L45/54
摘要： A method and apparatus are disclosed for accelerating Border Gateway Protocol (BGP) route convergence in an autonomous system. A virtual link identifier is assigned to each link of a set of communication links that are established between a BGP host and one or more network elements in one or more networks. For a particular link of the set of communication links, one or more routes that are reachable on the link are determined. The BGP host stores an association of the one or more routes with a BGP identifier of the BGP host and the virtual link identifier that is assigned to the particular link. The BGP host advertises the one or more routes to a BGP peer in a message, where the message includes the BGP identifier and the virtual link identifier.

18. 发明申请

US20060203744A1 Withdrawing multiple advertised routes based on a query defined in a withdraw message which may be of particular use in border gateway protocol 有权
标题翻译：根据可能在边界网关协议中特别使用的撤销消息中定义的查询撤销多个通告的路由
公开(公告)号：US20060203744A1
公开(公告)日：2006-09-14
申请号：US11077776
申请日：2005-03-11
申请人： Keyur Patel , Chandrashekhar Appanna , Robert Raszuk
发明人： Keyur Patel , Chandrashekhar Appanna , Robert Raszuk
IPC分类号： H04L12/28 , H04L12/26 , H04L12/56 , H04L1/00
CPC分类号： H04L45/02 , H04L45/04
摘要： Disclosed are, inter alia, methods, apparatus, data structures, computer-readable media, mechanisms, and means for withdrawing routes based on a query defined in a withdraw message. One or more route update messages identifying multiple routes with associated attributes and Type-Length-Value (TLV) values are received, and a routing database is updated to include the routes and their associated attributes and TLVs. A particular message associated with a route withdraw operation is received, with the particular message including an indication of at least two specified values and an operator, with each of the specified values being an attribute or a TLV. One or more routes are withdrawn from the routing database matching a query defined based on the specified values and the operator. In one embodiment, each of said attributes is a Border Gateway Protocol attribute. One embodiment includes sending a message including an advertisement of supporting MP_AGGREGATE_WITHDRAW capability.
摘要翻译：公开的方法，装置，数据结构，计算机可读介质，机制和用于基于在撤回消息中定义的查询来撤回路线的装置。接收到标识具有相关属性和类型长度值（TLV）值的多个路由的一个或多个路由更新消息，并且更新路由数据库以包括路由及其相关属性和TLV。接收与路由提取操作相关联的特定消息，其中特定消息包括至少两个指定值的指示和操作符，其中每个指定值是属性或TLV。一个或多个路由从路由数据库中取出，匹配基于指定值定义的查询和运算符。在一个实施例中，每个所述属性是边界网关协议属性。一个实施例包括发送包括支持MP_AGGREGATE_WITHDRAW能力的广告的消息。

19. 发明授权

US08750099B2 Method for providing border gateway protocol fast convergence on autonomous system border routers 有权
标题翻译：在自治系统边界路由器上提供边界网关协议快速收敛的方法
公开(公告)号：US08750099B2
公开(公告)日：2014-06-10
申请号：US13329113
申请日：2011-12-16
申请人： Keyur Patel , Robert Raszuk
发明人： Keyur Patel , Robert Raszuk
IPC分类号： H04L12/26
CPC分类号： H04L45/04 , H04L45/22 , H04L45/28
摘要： Techniques are disclosed for providing fast convergence on Autonomous System Border Routers (ASBRs). In an embodiment, an ASBR receives first Virtual Private Network (VPN) route information including a first route target, a first route distinguisher, and a first network prefix and second VPN route information including a second route target, a second route distinguisher and a second network prefix. The second route distinguisher received by the ASBR is different than the first route distinguisher. The ASBR compares the first route target to the second route target and the first network prefix with the second network prefix. In response to determining that the first route target matches the second route target and the first network prefix matches the second network prefix, the ASBR associates, in a routing table, a first path based on the first VPN route information with a second path based on the second VPN route information.
摘要翻译：公开了用于在自治系统边界路由器（ASBR）上提供快速融合的技术。在一个实施例中，ASBR接收包括第一路由目标，第一路由识别器和第一网络前缀的第一虚拟专用网（VPN）路由信息和包括第二路由目标的第二VPN路由信息，第二路由标识符和第二路由标识符网络前缀。由ASBR接收的第二个路由标识符与第一个路由标识符不同。 ASBR将第一个路由目标与第二个路由目标进行比较，第一个网络前缀与第二个网络前缀进行比较。响应于确定第一路由目标与第二路由目标匹配，并且第一网络前缀与第二网络前缀匹配，ASBR在路由表中将基于第一VPN路由信息的第一路径与基于第二条VPN路由信息。

20. 发明申请

US20130155845A1 METHOD FOR PROVIDING BORDER GATEWAY PROTOCOL FAST CONVERGENCE ON AUTONOMOUS SYSTEM BORDER ROUTERS 有权
标题翻译：为自动系统边界路由器提供边界网关协议快速收敛的方法
公开(公告)号：US20130155845A1
公开(公告)日：2013-06-20
申请号：US13329113
申请日：2011-12-16
申请人： Keyur Patel , Robert Raszuk
发明人： Keyur Patel , Robert Raszuk
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L45/04 , H04L45/22 , H04L45/28
摘要： Techniques are disclosed for providing fast convergence on Autonomous System Border Routers (ASBRs). In an embodiment, an ASBR receives first Virtual Private Network (VPN) route information including a first route target, a first route distinguisher, and a first network prefix and second VPN route information including a second route target, a second route distinguisher and a second network prefix. The second route distinguisher received by the ASBR is different than the first route distinguisher. The ASBR compares the first route target to the second route target and the first network prefix with the second network prefix. In response to determining that the first route target matches the second route target and the first network prefix matches the second network prefix, the ASBR associates, in a routing table, a first path based on the first VPN route information with a second path based on the second VPN route information.
摘要翻译：公开了用于在自治系统边界路由器（ASBR）上提供快速融合的技术。在一个实施例中，ASBR接收包括第一路由目标，第一路由识别器和第一网络前缀的第一虚拟专用网（VPN）路由信息和包括第二路由目标的第二VPN路由信息，第二路由标识符和第二路由标识符网络前缀。由ASBR接收的第二个路由标识符与第一个路由标识符不同。 ASBR将第一个路由目标与第二个路由目标进行比较，第一个网络前缀与第二个网络前缀进行比较。响应于确定第一路由目标与第二路由目标匹配，并且第一网络前缀与第二网络前缀匹配，ASBR在路由表中将基于第一VPN路由信息的第一路径与基于第二条VPN路由信息。

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