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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

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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 发明申请

US20080062861A1 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：US20080062861A1
公开(公告)日：2008-03-13
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： H04J3/14
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。

10. 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。

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