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1. 发明申请

US20150288536A1 Avoiding Micro-loops in a Ring Topology of a Network 审中-公开
标题翻译：避免网络环形拓扑中的微环路
公开(公告)号：US20150288536A1
公开(公告)日：2015-10-08
申请号：US14743715
申请日：2015-06-18
申请人： Stewart Frederick Bryant , Clarence Filsfils , Ian Michael Charles Shand
发明人： Stewart Frederick Bryant , Clarence Filsfils , Ian Michael Charles Shand
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。

2. 发明申请

US20130089097A1 Forwarding IPv6 Packets based on Shorter Addresses Derived from Their IPv6 Destination Addresses 有权
标题翻译：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
申请人： Clarence Filsfils , Stefano Benedetto Previdi , Ian Michael Charles Shand , John H. W. Bettink
发明人： Clarence Filsfils , Stefano Benedetto Previdi , Ian Michael Charles Shand , John H. W. Bettink
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。

3. 发明授权

US08238232B2 Constructing a transition route in a data communication network 有权
标题翻译：在数据通信网络中构建转换路由
公开(公告)号：US08238232B2
公开(公告)日：2012-08-07
申请号：US11968499
申请日：2008-01-02
申请人： Stewart Frederick Bryant , Ian Michael Charles Shand
发明人： Stewart Frederick Bryant , Ian Michael Charles Shand
IPC分类号： H04J1/16 , H04J3/14
CPC分类号： H04L45/18 , H04L45/00 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/48 , H04L2212/00
摘要： A method is described of constructing a transition route in a data communication network having as components nodes and links. Upon receipt of a transition notification identifying a first component a non-neighboring node constructs a transition route around the first component. In an embodiment, a node performs detecting the first component transition; issuing a transition notification identifying the first component and recognizable by nodes configured to construct a transition route around the first component; and upon expiry of a notification transition period, issuing a transition advertisement recognizable by all nodes on the network.
摘要翻译：描述了在具有节点和链路的组件的数据通信网络中构建转换路由的方法。当接收到标识第一组件的转换通知时，非相邻节点构成围绕第一组件的转换路径。在一个实施例中，节点执行检测第一分量转换; 发出标识所述第一组件的转换通知，并且可被被配置为围绕所述第一组件构建转换路径的节点识别; 并且在通知转换期限届满时，发布由网络上的所有节点可识别的转换广告。

4. 发明申请

US20120044811A1 CREATING BALANCED LINK-DISJOINT TOPOLOGIES IN A COMPUTER NETWORK 有权
标题翻译：在计算机网络中创建平衡链路解析拓扑
公开(公告)号：US20120044811A1
公开(公告)日：2012-02-23
申请号：US12859692
申请日：2010-08-19
申请人： Russell White , Ian Michael Charles Shand
发明人： Russell White , Ian Michael Charles Shand
IPC分类号： H04L12/26
CPC分类号： H04L45/28 , H04L45/02 , H04L45/1283 , H04L45/34 , H04L45/64
摘要： In one embodiment, each node in a computer network determines a shortest looping ring back to the node through each of its neighbors. Each of these rings may then be marked in a particular direction, ensuring that any ring that shares a link with another ring is marked in such a way that the shared link is in the same direction in each of the rings that share the link. The links that are marked in the particular direction may be stored as part of a first topology. Conversely, the opposite direction on the links (e.g., bidirectional links or parallel unidirectional links) may be stored as a second topology that is link-disjoint from the first topology.
摘要翻译：在一个实施例中，计算机网络中的每个节点通过其每个邻居来确定回节点的最短循环环。然后可以将这些环中的每一个以特定方向标记，确保与另一个环共享链接的任何环以这样的方式被标记，使得共享链路在共享链路的每个环中处于相同的方向。在特定方向上标记的链接可以存储为第一拓扑的一部分。相反，链路上相反的方向（例如，双向链路或并行单向链路）可以被存储为与第一拓扑链接不相交的第二拓扑。

5. 发明授权

US07920566B2 Forwarding data in a data communication network 有权
标题翻译：在数据通信网络中转发数据
公开(公告)号：US07920566B2
公开(公告)日：2011-04-05
申请号：US11788106
申请日：2007-04-18
申请人： Stewart Frederick Bryant , Ian Michael Charles Shand
发明人： Stewart Frederick Bryant , Ian Michael Charles Shand
IPC分类号： H04L12/28
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28 , H04L45/50 , H04L45/507
摘要： An apparatus for forwarding data in a data communications network having as components nodes and links therebetween is described. The apparatus is arranged to forward data towards a destination on a label switched path and advertise in a label advertisement to nodes in the network in a label advertisement its label for the label switched path and its label for a repair label switched path for use in the event of non availability of a component in the network. The apparatus is further arranged to advertise to a remote node in the network in a label advertisement additional information for deriving repair label switched path information at the remote node.
摘要翻译：描述了一种用于在数据通信网络中转发数据的装置，其具有作为其间的节点和链路的组件。该设备被布置为在标签交换路径上向目的地转发数据，并且在标签广告中向标签广告中的节点通告标签公告其标签交换路径的标签及其用于维护标签交换路径的标签网络中组件不可用的事件。所述装置还被布置为在标签广告中向网络中的远程节点通告用于在远程节点处导出修复标签交换路径信息的附加信息。

6. 发明授权

US07852751B2 Constructing repair paths around multiple non-available links in a data communications network 有权
标题翻译：围绕数据通信网络中的多个不可用链路构建修复路径
公开(公告)号：US07852751B2
公开(公告)日：2010-12-14
申请号：US12032274
申请日：2008-02-15
申请人： Stewart Frederick Bryant , Ian Michael Charles Shand
发明人： Stewart Frederick Bryant , Ian Michael Charles Shand
IPC分类号： H04L12/26
CPC分类号： H04L45/18 , H04L45/02 , H04L45/22 , H04L45/28 , H04L45/50
摘要： A data processing apparatus is configured for initiating a not-via approach for creating repair path information for a first link between the first network node and a second network node; creating a list of other network nodes that the not-via repair path traverses; creating and storing entries in the FIB identifying repair addresses for the network nodes and that cause (a) packets directed to all addresses normally reachable through the first link to be encapsulated to the second node not via the first node, (b) packets directed to a not-via address that is normally reachable through the first link to be encapsulated to the second node not via the first node, and (c) dropping packets directed to a not-via address that is normally reachable through the first link when the not-via address is in the list; repeating the preceding steps for all other links of the first network node.
摘要翻译：数据处理装置被配置为启动用于为第一网络节点和第二网络节点之间的第一链路创建修复路径信息的非通路方法; 创建非通路修复路径穿过的其他网络节点的列表; 创建和存储FIB中的条目，以识别网络节点的修复地址，并导致（a）指向通过第一链路正常可到达的所有地址的分组，而不是经由第一节点封装到第二节点;（b）指向通常可通过第一链路到达不通过第一节点封装到第二节点的非通过地址，以及（c）丢弃通过第一链路正常可到达的非通过地址的分组， -via地址在列表中; 对第一网络节点的所有其他链路重复前述步骤。

7. 发明授权

US07701845B2 Forwarding data in a data communications network 有权
标题翻译：在数据通信网络中转发数据
公开(公告)号：US07701845B2
公开(公告)日：2010-04-20
申请号：US11526933
申请日：2006-09-25
申请人： Stewart F. Bryant , Ian Michael Charles Shand
发明人： Stewart F. Bryant , Ian Michael Charles Shand
IPC分类号： G01R31/08 , G06F11/00
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28
摘要： An apparatus is described for forwarding data in a data communications network having as components nodes and links therebetween in which nodes obtain a reachability metric between a neighbor node and one or more other nodes in the network and in which a repair path is created between an instigating repair node and a receiving repair node around a failure component therebetween. A propagatable repair address for the receiving repair node is reachable by the repair path notvia the failure component. The apparatus is arranged to treat propagatability of the repair address differently via the failure component than via other components.
摘要翻译：描述了一种用于在数据通信网络中转发数据的装置，该数据通信网络具有作为组件之间的节点和链路的组件，其中节点获得相邻节点与网络中的一个或多个其他节点之间的可达性度量，并且其中在启动之间创建修复路径修复节点和接收修复节点之间的故障组件。接收修复节点的可扩展修复地址可通过修复路径而不是故障组件来实现。该装置被设置为通过故障部件不同于经由其他部件来处理修复地址的可扩散性。

8. 发明申请

US20080074997A1 Forwarding data in a data communications network 有权
标题翻译：在数据通信网络中转发数据
公开(公告)号：US20080074997A1
公开(公告)日：2008-03-27
申请号：US11526933
申请日：2006-09-25
申请人： Stewart F. Bryant , Ian Michael Charles Shand
发明人： Stewart F. Bryant , Ian Michael Charles Shand
IPC分类号： H04J3/14
CPC分类号： H04L45/22 , H04L45/02 , H04L45/28
摘要： An apparatus is described for forwarding data in a data communications network having as components nodes and links therebetween in which nodes obtain a reachability metric between a neighbor node and one or more other nodes in the network and in which a repair path is created between an instigating repair node and a receiving repair node around a failure component therebetween. A propagatable repair address for the receiving repair node is reachable by the repair path notvia the failure component. The apparatus is arranged to treat propagatability of the repair address differently via the failure component than via other components.
摘要翻译：描述了一种用于在数据通信网络中转发数据的装置，该数据通信网络具有作为组件之间的节点和链路的组件，其中节点获得相邻节点与网络中的一个或多个其他节点之间的可达性度量，并且其中在启动之间创建修复路径修复节点和接收修复节点之间的故障组件。接收修复节点的可扩展修复地址可通过修复路径而不是故障组件来实现。该装置被设置为通过故障部件不同于经由其他部件来处理修复地址的可扩散性。

9. 发明授权

US08659991B2 Minimizing the number of not-via addresses 有权
标题翻译：最小化不通过地址的数量
公开(公告)号：US08659991B2
公开(公告)日：2014-02-25
申请号：US12965038
申请日：2010-12-10
申请人： Stewart Frederick Bryant , Ian Michael Charles Shand
发明人： Stewart Frederick Bryant , Ian Michael Charles Shand
IPC分类号： H04L12/28
CPC分类号： H04L41/0668 , H04L45/22 , H04L45/28 , H04L45/42
摘要： In an embodiment, a method comprises determining a set of protected components that are associated with a notifying node; determining a single network repair address for the set of protected components, wherein the single network repair address is for use in response to unavailability of any of the protected components when transmitting network traffic to the notifying node; assigning the single network repair address to each of the protected components; wherein the notifying node is an internetworking device and wherein the method is performed by one or more processors.
摘要翻译：在一个实施例中，一种方法包括确定与通知节点相关联的一组受保护组件; 确定所述一组受保护组件的单个网络修复地址，其中，当将网络业务传输到所述通知节点时，所述单个网络修复地址用于响应于任何所述受保护组件的不可用性; 将单个网络修复地址分配给每个受保护的组件; 其中所述通知节点是互联网络设备，并且其中所述方法由一个或多个处理器执行。

10. 发明授权

US08553527B2 System and method for dynamically assigning values in a network 有权
标题翻译：在网络中动态分配值的系统和方法
公开(公告)号：US08553527B2
公开(公告)日：2013-10-08
申请号：US12476914
申请日：2009-06-02
申请人： Stewart Frederick Bryant , Ian Michael Charles Shand
发明人： Stewart Frederick Bryant , Ian Michael Charles Shand
IPC分类号： G06F11/00
CPC分类号： H04L41/0806 , H04L29/12216 , H04L41/30 , H04L61/2007
摘要： The embodiments described herein present methods and apparatus for dynamically assigning values in a network. A method includes receiving, at a designated value allocator from a network node, a first broadcast message using a link-state protocol. The method then identifies the first broadcast message as including a request to associate a parameter value to the network node and allocates an assigned parameter value to the network node based on the identification of the request included in the first broadcast message. A message that includes the assigned parameter value is then transmitted to the network node. Other embodiments are described.
摘要翻译：本文描述的实施例提出了用于在网络中动态分配值的方法和装置。一种方法包括使用链路状态协议从网络节点在指定值分配器处接收第一广播消息。该方法然后将第一广播消息识别为包括将参数值与网络节点相关联的请求，并且基于包括在第一广播消息中的请求的标识将分配的参数值分配给网络节点。然后将包含分配的参数值的消息发送到网络节点。描述其他实施例。

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