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    COMMUNICATION NETWORKS THAT PROVIDE A COMMON TRANSPORT DOMAIN FOR USE BY MULTIPLE SERVICE DOMAINS AND METHODS AND COMPUTER PROGRAM PRODUCTS FOR USING THE SAME
    21.
    发明申请
    COMMUNICATION NETWORKS THAT PROVIDE A COMMON TRANSPORT DOMAIN FOR USE BY MULTIPLE SERVICE DOMAINS AND METHODS AND COMPUTER PROGRAM PRODUCTS FOR USING THE SAME 有权
    通过多种服务领域和方法使用的共同运输域的通信网络和使用该方法的计算机程序产品

    公开(公告)号：US20140269730A1

    公开(公告)日：2014-09-18

    申请号：US14294279

    申请日：2014-06-03

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： James Uttaro ,  Richard Todd Harding

    IPC: H04L12/721 ,  H04L12/723

    CPC classification number: H04L45/12 ,  H04L12/66 ,  H04L45/04 ,  H04L45/50 ,  H04L45/72 ,  H04L2012/5618

    Abstract: A method of operating a communication network comprises receiving loopback addresses from a plurality of edge networks at a provider router of a core backbone network, the edge networks and the core backbone network being logically distinct from each other, advertising the loopback addresses to a transport route reflector element, propagating the advertisement of the loopback addresses to other provider routers of the core backbone network using a protocol for communicating between autonomous systems, and using the transport route reflector element to advertise at least one of the loopback addresses to a service route reflector element in one of the plurality of edge networks.

    Abstract translation: 一种操作通信网络的方法包括从核心骨干网络的提供商路由器处接收来自多个边缘网络的环回地址，边缘网络和核心骨干网络在逻辑上彼此不同，将环回地址广播到传输路由 反射器元件，使用用于在自主系统之间通信的协议将所述环回地址的广告传播到所述核心骨干网络的其他提供商路由器，并且使用所述传输路由反射器元件将至少一个所述环回地址通告给服务路由反射器元件 在多个边缘网络中的一个中。

    Virtual router instantiation on public clouds
    23.
    发明授权
    Virtual router instantiation on public clouds 有权

    公开(公告)号：US11456892B1

    公开(公告)日：2022-09-27

    申请号：US17202850

    申请日：2021-03-16

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： James Uttaro ,  Tuan Duong

    IPC: H04L12/28 ,  H04L12/46 ,  H04L41/0806

    Abstract: Aspects of the subject disclosure may include, for example, instantiating a virtual provider edge router (VPE) of a network operator on a layer 3 public cloud network operated by a cloud operator, establishing a virtual layer 2 bridging domain over the layer 3 public cloud network between a core network of the network operator and the VPE, wherein the virtual layer 2 bridging domain shields infrastructure addressing of the core network of the network operator, and establishing an Interior Gateway Protocol (IGP) of the network operator on top of the virtual layer 2 bridging domain for layer 2 communication between the core network of the network operator and the VPE over the layer 3 public cloud network. Other embodiments are disclosed.

    Management of Forwarding Tables at Edge Routers
    24.
    发明申请
    Management of Forwarding Tables at Edge Routers 审中-公开

    公开(公告)号：US20200259735A1

    公开(公告)日：2020-08-13

    申请号：US16858964

    申请日：2020-04-27

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： James Uttaro ,  Han Q. Nguyen

    IPC: H04L12/755 ,  H04L29/06 ,  H04L12/741 ,  H04L12/733

    Abstract: Concepts and technologies are disclosed herein for management of forwarding tables at edge routers. A processor that executes a software defined networking controller can select an edge router associated with a networking environment. The edge router can access or use a forwarding table. The processor can obtain routing information associated with the edge router. The routing information can include forwarding table contents associated with the forwarding table and next hop information that can indicate communication paths associated with the edge router. The processor can analyze the routing information to determine next hops associated with the edge router, generate a next hop graph that represents the next hops, and initiate updating of the forwarding table such that the forwarding table only includes data that corresponds to the next hops.

    Methods and apparatus to reflect routes from a remotely located virtual route reflector
    27.
    发明授权
    Methods and apparatus to reflect routes from a remotely located virtual route reflector 有权

    公开(公告)号：US10069716B2

    公开(公告)日：2018-09-04

    申请号：US14812426

    申请日：2015-07-29

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Chaitanya Yadlapalli ,  James Uttaro

    IPC: H04L12/751 ,  H04L12/721 ,  H04L12/781 ,  H04L12/713 ,  H04L12/773 ,  H04L12/715

    Abstract: Methods, apparatus, systems and articles of manufacture to reflect routes from a virtual route reflector are disclosed. An example method includes requesting, at a virtual route reflector remote from an autonomous system, topology information and external route information from the autonomous system. The external route information identifies a plurality of border routers through which a remote destination can be reached. The example method also includes selecting, using the topology information, a first path from among a plurality of paths emanating from a selected node in the autonomous system, the plurality of paths exiting the autonomous system at respective border routers of the plurality of border routers. The example method further includes advertising, from the virtual route reflector to a client router in the autonomous system, a route to the remote destination, the route including a first border router at which the first path exits the autonomous system.

    METHODS AND APPARATUS TO UTILIZE ROUTE PARAMETER SETS FOR EXCHANGING ROUTES IN A COMMUNICATION NETWORK
    28.
    发明申请
    METHODS AND APPARATUS TO UTILIZE ROUTE PARAMETER SETS FOR EXCHANGING ROUTES IN A COMMUNICATION NETWORK 有权
    利用通信网络中交换路由的路由参数的方法和设备

    公开(公告)号：US20150281053A1

    公开(公告)日：2015-10-01

    申请号：US14739885

    申请日：2015-06-15

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： Eric Rosenberg ,  James Uttaro

    IPC: H04L12/741 ,  H04L12/54 ,  H04L12/755

    CPC classification number: H04L45/04 ,  H04L9/3236 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04L45/02 ,  H04L45/021 ,  H04L45/54 ,  H04L47/10 ,  H04W40/244

    Abstract: Methods and apparatus to utilize route parameter sets for exchanging routes in a communication network are disclosed. An example method to exchange routes in a communication network disclosed herein comprises receiving a route comprising a route identifier identifying the route and a plurality of route parameter values characterizing the route, and sending the route identifier and a pointer to forward the route to a recipient in the communication network, the pointer being associated with a route parameter set comprising the plurality of route parameter values.

    Abstract translation: 公开了在通信网络中交换路由的路由参数集的方法和装置。 在本文公开的通信网络中交换路由的示例性方法包括接收包括标识路由的路由标识符和表征路由的多个路由参数值的路由，以及发送路由标识符和指针以将路由转发到接收者 所述通信网络，所述指针与包括所述多个路由参数值的路由参数集相关联。

    Virtualization Of Control Plane Network Elements
    29.
    发明申请
    Virtualization Of Control Plane Network Elements 有权
    控制平面网络元件的虚拟化

    公开(公告)号：US20140140350A1

    公开(公告)日：2014-05-22

    申请号：US13678649

    申请日：2012-11-16

    Applicant: AT&T INTELLECTUAL PROPERTY I, L.P

    Inventor： James Uttaro ,  Eric Rosenberg

    IPC: H04L29/06

    CPC classification number: H04L45/04 ,  H04L29/06 ,  H04L45/12 ,  H04L45/126

    Abstract: A system includes a first regional network including a first network element; a second regional network including a virtualized control plane network element, the virtualized control plane network element supporting a routing protocol at the first regional network, the routing protocol employing a location-based cost model; and a network connection connecting the virtualized control plane network element to the first regional network, the network connection having a network connection cost, the network connection cost applied in the location-based cost model to support the routing protocol at the first regional network.

    Abstract translation: 一种系统包括：第一区域网络，包括第一网络元件; 包括虚拟化控制平面网元的第二区域网络，在第一区域网络处支持路由协议的虚拟化控制平面网络元件，采用基于位置的成本模型的路由协议; 以及将所述虚拟化控制平面网元连接到所述第一区域网络的网络连接，所述网络连接具有网络连接成本，所述网络连接成本在所述基于位置的成本模型中应用以支持所述第一区域网络处的路由协议。

    Method and system for survival of data plane through a total control plane failure
    30.
    发明授权
    Method and system for survival of data plane through a total control plane failure 有权
    数据平面通过总控制平面故障生存的方法和系统

    公开(公告)号：US08667174B2

    公开(公告)日：2014-03-04

    申请号：US13759567

    申请日：2013-02-05

    Applicant: AT&T Intellectual Property I, L.P.

    Inventor： James Uttaro

    IPC: G06N99/00

    CPC classification number: H04L41/0668 ,  H04L43/0811 ,  H04L45/02 ,  H04L45/04 ,  H04L45/28

    Abstract: A system and method for retaining routes in a control plane learned by an inter-domain routing protocol in the event of a connectivity failure between routers. Routers are classified as either route reflectors or originators. A determination is made whether the connectivity failure occurred between a route reflector and an originator, two originators, or two route reflectors. A determination is then made whether to propagate a withdrawal of learned routes based on whether the connectivity failure occurred between a route reflector and an originator, two originators, or two route reflectors. A withdrawal of learned routes is propagated to neighboring routers if the connectivity failure occurred between two originators, or between a route reflector and an originator that is inaccessible via an intra-domain routing protocol. No withdrawal of learned routes is propagated if the connectivity failure occurred between two route reflectors, or between a route reflector and an originator that is accessible via an intra-domain routing protocol.

    Abstract translation: 在路由器之间发生连接故障的情况下，保留由域间路由协议学习的控制平面中的路由的系统和方法。 路由器被归类为路由反射器或发起者。 确定路由反射器和发起者，两个发起者或两个路由反射器之间是否发生连接故障。 然后，基于路由反射器和发起者，两个发起者或两个路由反射器之间是否发生连接故障，确定是否传播学习路由的撤销。 如果连接失败发生在两个发起者之间，或路由反射器与通过域内路由协议无法访问的发起者之间，则将学习路由的撤销传播到相邻路由器。 如果在两个路由反射器之间发生连接故障，或路由反射器和可通过域内路由协议访问的发起者之间，则不会传播学习路由的撤销。

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