公开(公告)号：US20080219153A1

公开(公告)日：2008-09-11

申请号：US11518405

申请日：2006-09-08

Applicant: Mike Shand ,  Stewart F. Bryant ,  David D. Ward ,  Gargi Nalawade ,  Keyur Patel ,  Stefano B. Previdi ,  Robert Raszuk

Inventor： Mike Shand ,  Stewart F. Bryant ,  David D. Ward ,  Gargi Nalawade ,  Keyur Patel ,  Stefano B. Previdi ,  Robert Raszuk

IPC: G01R31/08

CPC classification number: H04L45/22 ,  H04L45/04 ,  H04L45/28

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20080212610A1

公开(公告)日：2008-09-04

申请号：US11713504

申请日：2007-03-02

Applicant: David D. Ward ,  Earl Hardin Booth ,  Stefano Previdi

Inventor： David D. Ward ,  Earl Hardin Booth ,  Stefano Previdi

IPC: H04J3/16

CPC classification number: H04J3/14 ,  H04J2203/006 ,  H04J2203/0083 ,  H04L12/66

Abstract: In one embodiment, software code in a respective computer system such as one or more data communication devices establishes multiple layer 2 network links between a first data communication device and a second data communication device. The first data communication device and the second data communication device include corresponding layer 3 interfaces enabling layer 3 network communications over each of the multiple layer 2 network links. The first and second data communication devices route traffic over one (e.g., a primary layer 2 link) of the multiple layer 2 network links using the layer 3 network communications. The private links are media independent. Upon detection of a failure associated with the primary layer 2 link, the data communication devices can automatically switch to sending traffic over a backup link of the multiple layer 2 network links without disrupting publicly advertised routing topology information.

Abstract translation: 在一个实施例中，诸如一个或多个数据通信设备的相应计算机系统中的软件代码在第一数据通信设备和第二数据通信设备之间建立多个第2层网络链路。 第一数据通信设备和第二数据通信设备包括相应的层3接口，其能够在多层2网络链路中的每一个上实现层3网络通信。 第一和第二数据通信设备使用第3层网络通信路由多层2网络链路的一个（例如，主层2链路）上的业务。 私人链接是媒体独立的。 在检测到与主层2链路相关联的故障时，数据通信设备可以自动切换到通过多层2网络链路的备份链路发送流量，而不会中断公开发布的路由拓扑信息。

公开(公告)号：US07415706B1

公开(公告)日：2008-08-19

申请号：US10726272

申请日：2003-12-01

Applicant: Satyanarayana Raju ,  David Anthony Tanner ,  David D. Ward

Inventor： Satyanarayana Raju ,  David Anthony Tanner ,  David D. Ward

IPC: G06F9/44

CPC classification number: G06F8/65 ,  G06F9/44536

Abstract: A method and an apparatus are disclosed for managing multiple software component versions. The method and apparatus detect a version change to one software component on a network. Then, the method and apparatus automatically identify other software components that both need to be changed to remain compatible with the changed software component and also depend on the changed software component.

Abstract translation: 公开了用于管理多个软件组件版本的方法和装置。 该方法和装置检测网络上的一个软件组件的版本更改。 然后，该方法和装置自动识别需要改变的其他软件组件以保持与改变的软件组件的兼容性，并且还取决于改变的软件组件。

公开(公告)号：US07411963B2

公开(公告)日：2008-08-12

申请号：US11040629

申请日：2005-01-19

Applicant: David D. Ward ,  Jean-Philippe Vasseur ,  Stefano B. Previdi

Inventor： David D. Ward ,  Jean-Philippe Vasseur ,  Stefano B. Previdi

IPC: H04L12/26 ,  H04J3/14 ,  G08C15/00 ,  G06F11/00

CPC classification number: H04L45/50 ,  H04L45/02 ,  H04L45/52

Abstract: A method and apparatus for the dissemination of non-routing information to nodes of a network is provided. A new type of IS-IS packet (called a NRI IS-IS packet) is described that exclusively carries non-routing information. When the NRI IS-IS packet is received by a router, the router may send the NRI IS-IS packet to an appropriate component responsible for processing non-routing information, without analyzing, verifying, and validating the information carried in each TLV and sub-TLV of the NRI IS-IS packet. Advantageously, the time it takes for routers of the network to achieve convergence is decreased since a IS-IS packet reader need not analyze, verify, and validate information not related to network topology and IP routing. Therefore, when NRI IS-IS packets are received, there is no impact in the convergence time of nodes in the network.

Abstract translation: 提供了一种用于将非路由信息传播到网络节点的方法和装置。 描述了一种新型的IS-IS分组（称为NRI IS-IS分组），其独有地携带非路由信息。 当路由器接收到NRI IS-IS报文时，路由器可以将NRI IS-IS报文发送给负责处理非路由信息的适当组件，而无需分析，验证和验证每个TLV和Sub -TLV的NRI IS-IS包。 有利的是，由于IS-IS分组读取器不需要分析，验证和验证与网络拓扑和IP路由不相关的信息，所以网络路由器实现收敛所需的时间被减少。 因此，当收到NRI IS-IS报文时，网络节点的收敛时间不会有任何影响。

公开(公告)号：US20080062861A1

公开(公告)日：2008-03-13

申请号：US11518382

申请日：2006-09-08

Applicant: Mike Shand ,  Stewart F. Bryant ,  David D. Ward ,  Gargi Nalawade ,  Robert Raszuk ,  Keyur Patel ,  Clarence Filsfils ,  Stefano B. Previdi

Inventor： Mike Shand ,  Stewart F. Bryant ,  David D. Ward ,  Gargi Nalawade ,  Robert Raszuk ,  Keyur Patel ,  Clarence Filsfils ,  Stefano B. Previdi

IPC: H04J3/14

CPC classification number: H04L45/04 ,  H04L45/02 ,  H04L45/28

Abstract: 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.

Abstract translation: 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。