公开(公告)号：US08050267B2

公开(公告)日：2011-11-01

申请号：US11676444

申请日：2007-02-19

申请人： William Mark Townsley ,  Earl Hardin Booth

发明人： William Mark Townsley ,  Earl Hardin Booth

IPC分类号： H04L12/56

CPC分类号： H04L12/4641 ,  H04L29/12367 ,  H04L29/12424 ,  H04L61/2061 ,  H04L61/2514 ,  H04L61/2535 ,  H04L61/2592 ,  H04L2212/00

摘要： In one embodiment, a method includes establishing a control channel across a wide area network (WAN) from a first gateway that has a first public internetwork layer (L3) address to a second gateway that has a second public L3 address. Each gateway connects a local area network (LAN) to the WAN. Negotiations over the control channel establish a first set of private L3 addresses for the first LAN and a non-overlapping second set for the second LAN. A different address from the first set is provided for each different node in the first LAN. A discovery packet is received from the first LAN. The discovery packet is encapsulated in a tunnel packet directed to the second public L3 address. The tunnel packet is sent over the WAN to the second gateway which extracts the discovery packet. The second gateway sends the discovery packet over the second LAN.

摘要翻译： 在一个实施例中，一种方法包括从具有第一公共互联网层（L3）地址的第一网关到具有第二公共L3地址的第二网关的广域网（WAN）建立控制信道。 每个网关将局域网（LAN）连接到WAN。 通过控制信道的谈判为第一LAN建立第一组专用L3地址，为第二LAN建立不重叠的第二组。 为第一LAN中的每个不同节点提供与第一组不同的地址。 从第一LAN接收到发现分组。 发现分组被封装在指向第二公共L3地址的隧道分组中。 隧道数据包通过WAN发送到提取发现数据包的第二个网关。 第二个网关通过第二个LAN发送发现数据包。

公开(公告)号：US20080198858A1

公开(公告)日：2008-08-21

申请号：US11676444

申请日：2007-02-19

申请人： William Mark Townsley ,  Earl Hardin Booth

发明人： William Mark Townsley ,  Earl Hardin Booth

IPC分类号： H04L12/56

CPC分类号： H04L12/4641 ,  H04L29/12367 ,  H04L29/12424 ,  H04L61/2061 ,  H04L61/2514 ,  H04L61/2535 ,  H04L61/2592 ,  H04L2212/00

摘要： In one embodiment, a method includes establishing a control channel across a wide area network (WAN) from a first gateway that has a first public internetwork layer (L3) address to a second gateway that has a second public L3 address. Each gateway connects a local area network (LAN) to the WAN. Negotiations over the control channel establish a first set of private L3 addresses for the first LAN and a non-overlapping second set for the second LAN. A different address from the first set is provided for each different node in the first LAN. A discovery packet is received from the first LAN. The discovery packet is encapsulated in a tunnel packet directed to the second public L3 address. The tunnel packet is sent over the WAN to the second gateway which extracts the discovery packet. The second gateway sends the discovery packet over the second LAN.

摘要翻译： 在一个实施例中，一种方法包括从具有第一公共互联网层（L3）地址的第一网关到具有第二公共L3地址的第二网关的广域网（WAN）建立控制信道。 每个网关将局域网（LAN）连接到WAN。 通过控制信道的谈判为第一LAN建立第一组专用L3地址，为第二LAN建立不重叠的第二组。 为第一LAN中的每个不同节点提供与第一组不同的地址。 从第一LAN接收到发现分组。 发现分组被封装在指向第二公共L3地址的隧道分组中。 隧道数据包通过WAN发送到提取发现数据包的第二个网关。 第二个网关通过第二个LAN发送发现数据包。

公开(公告)号：US20080212610A1

公开(公告)日：2008-09-04

申请号：US11713504

申请日：2007-03-02

申请人： David D. Ward ,  Earl Hardin Booth ,  Stefano Previdi

发明人： David D. Ward ,  Earl Hardin Booth ,  Stefano Previdi

IPC分类号： H04J3/16

CPC分类号： H04J3/14 ,  H04J2203/006 ,  H04J2203/0083 ,  H04L12/66

摘要： 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.

摘要翻译： 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：US08001252B2

公开(公告)日：2011-08-16

申请号：US12415396

申请日：2009-03-31

申请人： James N. Guichard ,  Mohammed Sayeed ,  Bertrand Duvivier ,  Daniel C. Tappan ,  W. Scott Wainner ,  Earl Hardin Booth ,  Christopher Metz ,  W. Mark Townsley ,  Wojciech Dec

发明人： James N. Guichard ,  Mohammed Sayeed ,  Bertrand Duvivier ,  Daniel C. Tappan ,  W. Scott Wainner ,  Earl Hardin Booth ,  Christopher Metz ,  W. Mark Townsley ,  Wojciech Dec

IPC分类号： G06F15/16

CPC分类号： H04L12/4633

摘要： A method, apparatus and computer program product for routing data within a packet-switched network using a PW wherein the PW is terminated directly on the layer-3 routing device such that certain services and applications can be utilized is presented. The method, apparatus and computer program product receives an encapsulated layer-2 Protocol Data Unit (PDU) from a pseudowire emulating a service. The encapsulation is removed from the encapsulated layer-2 PDU and a layer-2 circuit associated with the pseudowire is terminated. The circuit is treated as an interface and the PDU is forwarded based on upper layer protocol information within the PDU.

摘要翻译： 一种用于使用PW在分组交换网络内路由数据的方法，装置和计算机程序产品，其中PW直接终止在第3层路由设备上，使得可以利用某些服务和应用。 方法，装置和计算机程序产品从模拟服务的伪线接收封装的第二层协议数据单元（PDU）。 从封装层2 PDU去除封装，并终止与伪线相关联的二层电路。 该电路被视为一个接口，并且基于PDU内的上层协议信息转发PDU。

公开(公告)号：US07277931B1

公开(公告)日：2007-10-02

申请号：US09327708

申请日：1999-06-08

申请人： Earl Hardin Booth ,  Charles Bruce Dillon ,  Bret Elliott Harrison ,  Sanjay Damodar Kamat ,  Charles Steven Lingafelt ,  Walter Cade Metz ,  Rajendran Rajan ,  Leo Temoshenko

发明人： Earl Hardin Booth ,  Charles Bruce Dillon ,  Bret Elliott Harrison ,  Sanjay Damodar Kamat ,  Charles Steven Lingafelt ,  Walter Cade Metz ,  Rajendran Rajan ,  Leo Temoshenko

IPC分类号： G06F15/177

CPC分类号： H04L12/66 ,  H04L41/00 ,  H04L41/12 ,  H04L63/20

摘要： A method, apparatus, computer product and structure is presented for representing and managing large amounts of information concerning networks of elements. While being useful for communication networks, it can be also usefully deployed in the context of other networks such as distribution and transportation networks. The method uses a hierarchical construct called “catalog”—a set of elements (which could be “atomic” elements or catalogs themselves)—to organize information about physical or abstract entities relevant for modeling the network. A matrix construct whose rows and columns constitute such elements are used to model connections at different levels of abstraction. A common framework and representation provided using these two constructs is shown to be useful for visualization, administration, configuration, modeling, monitoring and manipulation of the network.

摘要翻译： 提出了一种方法，装置，计算机产品和结构，用于表示和管理有关元素网络的大量信息。 在对通信网络有用的同时，也可以有效地部署在其他网络（如分销和运输网络）的上下文中。 该方法使用称为“目录”的分层结构 - 一组元素（可以是“原子”元素或目录本身） - 组织有关与网络建模相关的物理或抽象实体的信息。 其行和列构成这样的元素的矩阵构造用于对不同抽象级别的连接进行建模。 使用这两种结构提供的通用框架和表示可以用于网络的可视化，管理，配置，建模，监控和操纵。