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1.发明授权Method and apparatus for constructing a backup route in a data communications network 有权在数据通信网络中构建备份路由的方法和装置公开(公告)号：US07707307B2
公开(公告)日：2010-04-27
申请号：US10340371
申请日：2003-01-09
申请人： Kevin George Miles , Ian Michael Charles Shand , Stewart Frederick Bryant , Stefano Benedetto Previdi , John Anthony Harper , Clarence Filsfils
发明人： Kevin George Miles , Ian Michael Charles Shand , Stewart Frederick Bryant , Stefano Benedetto Previdi , John Anthony Harper , Clarence Filsfils
IPC分类号： G06F15/173 , G01R31/08
摘要： A method is disclosed for constructing a backup route from a source node around an adjacent component. The source node derives a first set of nodes reachable from it without traversing the adjacent component and a second set of nodes from which a neighbor node of adjacent components is reachable without traversing the adjacent component. The source node then constructs a backup route via an intermediate node in the intersection of the first and second sets.
摘要翻译： 公开了一种用于从邻近组件周围的源节点构建备用路由的方法。 源节点导出可从其到达的第一组节点，而不穿过相邻组件和相邻组件的相邻节点可到达的第二组节点，而不穿过相邻组件。 源节点然后经由第一和第二组的交集中的中间节点构建备用路由。
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2.发明授权公开(公告)号：US07042838B1
公开(公告)日：2006-05-09
申请号：US10848669
申请日：2004-05-18
IPC分类号： G01R31/08
摘要： A method of forwarding data in a data communications network comprising a plurality of nodes comprises the step of forwarding data according to a forwarding strategy implemented at a forwarding node. Where the implemented strategy comprises a repair strategy to compensate for a change in the network, the method further comprises the step of encapsulating the data in a primary repair encapsulating packet and marking the primary repairing encapsulating packet as repaired.
摘要翻译： 在包括多个节点的数据通信网络中转发数据的方法包括根据在转发节点处实现的转发策略来转发数据的步骤。 在实施的策略包括补偿网络变化的修复策略的情况下，该方法还包括将数据封装在主修复封装分组中并标记被修复的主修复封装分组的步骤。
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公开(公告)号：US09942057B2
公开(公告)日：2018-04-10
申请号：US14743715
申请日：2015-06-18
IPC分类号： H04L12/437 , H04L12/705 , H04L12/703 , H04L12/427 , H04L12/26
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
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公开(公告)号：US20130088974A1
公开(公告)日：2013-04-11
申请号：US13269617
申请日：2011-10-09
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
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公开(公告)号：US20150288536A1
公开(公告)日：2015-10-08
申请号：US14743715
申请日：2015-06-18
IPC分类号： H04L12/437 , H04L12/703 , H04L12/427 , H04L12/26
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
摘要翻译： 在一个实施例中，通过改变关于特定分组交换设备和相邻分组交换设备之间的故障通信的链路状态信息的传播顺序来避免分组交换设备的环形拓扑中的微环路。 在一个实施例中，特定分组交换设备传送特定通信的高成本（例如，从特定到相邻分组交换设备的方向）的链路状态信息，使得该链路状态信息将向特定分组交换设备传播 至少来自当前配置为通过特定分组交换设备转发具有相邻分组交换设备的目的地地址的分组的环形拓扑中的最远分组交换设备。
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公开(公告)号：US09094329B2
公开(公告)日：2015-07-28
申请号：US13269617
申请日：2011-10-09
IPC分类号： H04L12/26 , H04L12/28 , H04L12/703 , H04L12/705 , H04L12/437
CPC分类号： H04L12/437 , H04L12/427 , H04L43/0811 , H04L45/18 , H04L45/28
摘要： In one embodiment, micro-loops are avoided in ring topologies of packet switching devices by changing the order of propagation of link state information concerning failed communications between a particular packet switching device and a neighbor packet switching device. In one embodiment, the particular packet switching device communicates link state information of a high cost of the particular communications (e.g., in the direction from particular to neighbor packet switching devices) such that this link state information will propagate towards the particular packet switching device from at least from the furthest packet switching device in the ring topology that is currently configured to forward packets having a destination address of the neighbor packet switching device through the particular packet switching device.
摘要翻译： 在一个实施例中，通过改变关于特定分组交换设备和相邻分组交换设备之间的故障通信的链路状态信息的传播顺序来避免分组交换设备的环形拓扑中的微环路。 在一个实施例中，特定分组交换设备传送特定通信的高成本（例如，从特定到相邻分组交换设备的方向）的链路状态信息，使得该链路状态信息将向特定分组交换设备传播 至少来自当前配置为通过特定分组交换设备转发具有相邻分组交换设备的目的地地址的分组的环形拓扑中的最远分组交换设备。
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公开(公告)号：US07852772B2
公开(公告)日：2010-12-14
申请号：US11254609
申请日：2005-10-20
申请人： Clarence Filsfils , Stewart Bryant , Ian Michael Charles Shand , David D. Ward , John Galen Scudder
发明人： Clarence Filsfils , Stewart Bryant , Ian Michael Charles Shand , David D. Ward , John Galen Scudder
IPC分类号： H04L12/26
摘要： A method of implementing a backup path in an autonomous system (AS) for failure of an inter-AS link is described. The method comprises forwarding data elements destined for the failed link via a backup path and including a loop prevention attribute in the packet.
摘要翻译： 描述了在自治系统（AS）中实现AS间链路故障的备用路径的方法。 该方法包括经由备份路径转发去往故障链路的数据元素，并在分组中包括环路防止属性。
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8.发明授权Forwarding IPv6 packets based on shorter addresses derived from their IPv6 destination addresses 有权基于从其IPv6目的地址导出的较短地址转发IPv6数据包公开(公告)号：US08751686B2
公开(公告)日：2014-06-10
申请号：US13253674
申请日：2011-10-05
IPC分类号： G06F15/16
CPC分类号： H04L45/741 , H04L45/04
摘要： In one embodiment, a packet switching device is configured to convert an Internet Protocol Version 6 (IPv6) destination address, of a received particular IPv6 packet, to a second, shorter destination address. This second destination address is then used to determine forwarding information for the received IPv6 packet, which is forwarded accordingly. In one embodiment, this second address is a 32-bit address, and in particular, an Internet Protocol Version 4 (IPv4) address. Thus, one embodiment can use the IPv4 forwarding infrastructure of a packet switching device for determining how to forward IPv6 packets. In a network according to one embodiment, packets are encapsulated in an IPv6 packet using an IPv6 destination address (that can be converted to an IPv4 address) of an egress edge packet switching device. Thus, core packet switching devices can forward IPv6 packets using IPv4 lookup operations.
摘要翻译： 在一个实施例中，分组交换设备被配置为将接收到的特定IPv6分组的因特网协议版本6（IPv6）目的地地址转换为第二较短的目的地地址。 然后，该第二目的地地址用于确定所接收的IPv6分组的转发信息，所述转发信息被相应地转发。 在一个实施例中，该第二地址是32位地址，特别是因特网协议版本4（IPv4）地址。 因此，一个实施例可以使用分组交换设备的IPv4转发基础设施来确定如何转发IPv6分组。 在根据一个实施例的网络中，使用出口边缘分组交换设备的IPv6目的地址（可以转换为IPv4地址）将分组封装在IPv6分组中。 因此，核心分组交换设备可以使用IPv4查找操作转发IPv6分组。
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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。
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10.发明申请Forwarding IPv6 Packets based on Shorter Addresses Derived from Their IPv6 Destination Addresses 有权基于IPv6目标地址的较短地址转发IPv6数据包公开(公告)号：US20130089097A1
公开(公告)日：2013-04-11
申请号：US13253674
申请日：2011-10-05
IPC分类号： H04L12/56
CPC分类号： H04L45/741 , H04L45/04
摘要： In one embodiment, a packet switching device is configured to convert an Internet Protocol Version 6 (IPv6) destination address, of a received particular IPv6 packet, to a second, shorter destination address. This second destination address is then used to determine forwarding information for the received IPv6 packet, which is forwarded accordingly. In one embodiment, this second address is a 32-bit address, and in particular, an Internet Protocol Version 4 (IPv4) address. Thus, one embodiment can use the IPv4 forwarding infrastructure of a packet switching device for determining how to forward IPv6 packets. In a network according to one embodiment, packets are encapsulated in an IPv6 packet using an IPv6 destination address (that can be converted to an IPv4 address) of an egress edge packet switching device. Thus, core packet switching devices can forward IPv6 packets using IPv4 lookup operations.
摘要翻译： 在一个实施例中，分组交换设备被配置为将接收到的特定IPv6分组的因特网协议版本6（IPv6）目的地地址转换为第二较短的目的地地址。 然后，该第二目的地地址用于确定所接收的IPv6分组的转发信息，所述转发信息被相应地转发。 在一个实施例中，该第二地址是32位地址，特别是因特网协议版本4（IPv4）地址。 因此，一个实施例可以使用分组交换设备的IPv4转发基础设施来确定如何转发IPv6分组。 在根据一个实施例的网络中，使用出口边缘分组交换设备的IPv6目的地址（可以转换为IPv4地址）将分组封装在IPv6分组中。 因此，核心分组交换设备可以使用IPv4查找操作转发IPv6分组。
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