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1. 发明授权

US09054951B2 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：US09054951B2
公开(公告)日：2015-06-09
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： H04L12/28 , H04L12/751 , H04L12/715
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。

2. 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。

3. 发明申请

US20090052452A1 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：US20090052452A1
公开(公告)日：2009-02-26
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： H04L12/56
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。

4. 发明授权

US07697416B2 Constructing a repair path in the event of non-availability of a routing domain 有权
标题翻译：在路由域不可用的情况下构建修复路径
公开(公告)号：US07697416B2
公开(公告)日：2010-04-13
申请号：US11518382
申请日：2006-09-08
申请人： Mike Shand , Stewart F. Bryant , David D. Ward , Gargi Nalawade , Robert Raszuk , Keyur Patel , Clarence Filsfils , Stefano B. Previdi
发明人： Mike Shand , Stewart F. Bryant , David D. Ward , Gargi Nalawade , Robert Raszuk , Keyur Patel , Clarence Filsfils , Stefano B. Previdi
IPC分类号： H04L1/00 , H04L12/26 , H04L12/28 , H04L12/56
CPC分类号： H04L45/04 , H04L45/02 , H04L45/28
摘要： In one embodiment, an apparatus and method are described for constructing a repair path in the event of non-availability of a routing domain component of a routing domain comprising, as components, links and nodes. The apparatus is arranged to receive respective network repair addresses from each of the far-side and near-side advertising node for use in the event of non-availability of a routing domain component between the advertising node. The apparatus is further arranged to advertise the near-side advertising node network repair address to one or more far-side nodes via a path external to the routing domain.
摘要翻译：在一个实施例中，描述了在路由域的路由域组件的不可用性的情况下构建修复路径的装置和方法，该路由域组件包括作为组件的链路和节点。该装置被安排为从广播节点和广播节点之间的路由域组件不可用的情况下接收来自远侧和近侧广告节点的相应网络修复地址。该装置还被布置成经由路由域外部的路径将近侧广告节点网络修复地址通告给一个或多个远侧节点。

5. 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。

6. 发明申请

US20070214280A1 Backup BGP paths for non-multipath BGP fast convergence 有权
标题翻译：备份用于非多路径BGP快速收敛的BGP路径
公开(公告)号：US20070214280A1
公开(公告)日：2007-09-13
申请号：US11371522
申请日：2006-03-09
申请人： Keyur Patel , Robert Raszuk , Clarence Filsfils
发明人： Keyur Patel , Robert Raszuk , Clarence Filsfils
IPC分类号： G06F15/173
CPC分类号： H04L45/22 , H04L45/04 , H04L45/124 , H04L45/28
摘要： A technique institutes backup Border Gateway Protocol (BGP) paths for non-multipath BGP Fast Convergence in a computer network. According to the novel technique, a protecting node, e.g., a border router, calculates a best BGP path to a destination prefix, and also calculates one or more backup BGP paths (i.e., non-multipath paths) to the destination prefix. The best path is selected as a utilized path for the destination prefix, e.g., the path over which to send traffic destined for the prefix from the border router. Upon determining that the best BGP path has failed, one of the backup BGP paths is selected as the utilized path for the destination prefix.
摘要翻译：技术为计算机网络中的非多路径BGP快速收敛提供了备份边界网关协议（BGP）路径。根据新技术，保护节点（例如边界路由器）计算到目的地前缀的最佳BGP路径，并且还计算到目的地前缀的一个或多个备用BGP路径（即，非多路径路径）。选择最佳路径作为目的地前缀的利用路径，例如，从边界路由器发送去往前缀的流量的路径。在确定最佳BGP路径失败后，其中一条备份BGP路径将被选择作为目标前缀的使用路径。

7. 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.

8. 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。

9. 发明授权

US08559414B2 Automatically detecting best paths from shadow route reflectors 有权
标题翻译：自动检测阴影路径反射器的最佳路径
公开(公告)号：US08559414B2
公开(公告)日：2013-10-15
申请号：US13031188
申请日：2011-02-19
申请人： Selma Yilmaz , Keyur Patel , Nitin Kumar , Robert Raszuk , Satish Mynam
发明人： Selma Yilmaz , Keyur Patel , Nitin Kumar , Robert Raszuk , Satish Mynam
IPC分类号： H04L12/28
CPC分类号： H04L45/123 , H04L45/02 , H04L45/04 , H04L45/12 , H04L45/42 , H04L45/52
摘要： In an embodiment, a method comprises receiving a path advertisement comprising information about an available path and a well-known community value associated with the available path. A modified best path calculation is performed in response to receiving the available path either from a higher-ranked device or from a device that is not participating in diverse path calculation, resulting in creating a particular best path. The particular best path is advertised to other routers with or without a restriction indicator based on whether it is a client learned path or non-client iBGP peer learned path and based on whether the advertisement is directed to a client or a non-client iBGP peer.
摘要翻译：在一个实施例中，一种方法包括接收包括关于可用路径的信息和与可用路径相关联的公知社区值的路径通告。响应于从更高排名的设备或不参与不同路径计算的设备接收可用路径而执行修改的最佳路径计算，导致创建特定的最佳路径。根据客户端学习路径还是非客户端iBGP对等体学习路径，并根据广告是指向客户端还是非客户端iBGP对等体，将特定最佳路径通告给具有或不具有限制指示符的其他路由器。

10. 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。

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