中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

35 records (took 0.023 seconds)

    Rerouting tunnel traffic in communication networks
    14.
    发明授权
    Rerouting tunnel traffic in communication networks 有权

    公开(公告)号：US09954770B2

    公开(公告)日：2018-04-24

    申请号：US14508699

    申请日：2014-10-07

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

    Inventor： John Gregory Klincewicz ,  Gagan Choudhury ,  Kathleen S. Meier-Hellstern

    IPC: H04L12/703 ,  H04L12/707 ,  H04L12/891 ,  H04L12/26

    CPC classification number: H04L45/28 ,  H04L43/0817 ,  H04L45/22 ,  H04L47/41

    Abstract: Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to reroute tunnel traffic in a network are disclosed. Example methods disclosed herein include, in response to detecting an event associated with routing first traffic in the network, determining a plurality of paths to carry respective traffic for a plurality of tunnels between pairs of routers in the network, the plurality of paths being determined based on a quality metric characterizing an aggregate tunnel bandwidth to be carried by the plurality of paths for the plurality of tunnels. Such disclosed example methods also include sending first routing information describing the plurality of paths to the routers in the network to cause the routers to route the respective traffic for the plurality of tunnels using the plurality of paths.

    CENTRALIZED METHOD FOR COMPUTING BYPASS/FRR (FAST RE-ROUTE) TUNNELS
    16.
    发明公开
    CENTRALIZED METHOD FOR COMPUTING BYPASS/FRR (FAST RE-ROUTE) TUNNELS 审中-公开

    公开(公告)号：US20230261980A1

    公开(公告)日：2023-08-17

    申请号：US17672388

    申请日：2022-02-15

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

    Inventor： Narayan Padi ,  Shweta Vachhani ,  Aswatnarayan Raghuram ,  Juby J. Chacko ,  Harpreet Ahluwalia ,  Kenichi Futamura ,  Gagan Choudhury ,  Alvin C. Goddard

    IPC: H04L45/28 ,  H04L43/0882 ,  H04L43/16

    CPC classification number: H04L45/28 ,  H04L43/16 ,  H04L43/0882

    Abstract: Aspects of the subject disclosure may include, for example, obtaining for a first path carrying first network traffic a corresponding first alternate path; obtaining for a second path carrying second network traffic a corresponding second alternate path, at least a first portion of the first alternate path being the same as at least a second portion of the second alternate path; responsive to a first detected failure on the first path, causing communication of first re-directed network traffic via the first alternate path instead of via the first path; responsive to a second detected failure on the second path, detecting whether total traffic, including the first re-directed network traffic, on the first portion of the first alternate path meets a threshold; responsive to the detected meeting of the threshold, obtaining for the second path a corresponding back-up alternate path; and causing communication of second re-directed network traffic via the back-up alternative path instead of via the second path. Other embodiments are disclosed.

    Rerouting tunnel traffic in communication networks
    19.
    发明授权
    Rerouting tunnel traffic in communication networks 有权

    公开(公告)号：US10425326B2

    公开(公告)日：2019-09-24

    申请号：US15960147

    申请日：2018-04-23

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

    Inventor： John Gregory Klincewicz ,  Gagan Choudhury ,  Kathleen S. Meier-Hellstern

    IPC: H04L12/703 ,  H04L12/707 ,  H04L12/891 ,  H04L12/26

    Abstract: Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to reroute tunnel traffic in a network are disclosed. Example methods disclosed herein include, in response to detecting an event associated with routing first traffic in the network, determining a plurality of paths to carry respective traffic for a plurality of tunnels between pairs of routers in the network, the plurality of paths being determined based on a quality metric characterizing an aggregate tunnel bandwidth to be carried by the plurality of paths for the plurality of tunnels. Such disclosed example methods also include sending first routing information describing the plurality of paths to the routers in the network to cause the routers to route the respective traffic for the plurality of tunnels using the plurality of paths.

    Routing stability in hybrid software-defined networking networks
    20.
    发明授权
    Routing stability in hybrid software-defined networking networks 有权

    公开(公告)号：US10411990B2

    公开(公告)日：2019-09-10

    申请号：US15845335

    申请日：2017-12-18

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

    Inventor： Shih-Hao Tseng ,  Ao Tang ,  Simon Tse ,  Gagan Choudhury

    IPC: H04L12/703 ,  H04L12/715 ,  H04L12/717 ,  H04L12/721 ,  H04L12/741 ,  H04L12/755 ,  H04L12/771

    Abstract: Concepts and technologies disclosed herein are directed to routing stability in a hybrid software-defined networking (“SDN”) network in which control plane functionality is shared between a centralized SDN controller and a plurality of local routers. The controller can collect data plane messages from the plurality of local routers, extract information corresponding to source nodes and edges of a graph representative of the hybrid SDN network, and store the information as entries in a table. The controller can identify any outdated entries and remove any outdated entries from the table. The controller can obtain recovered information missing from the information collected from the data plane messages. The controller also can calculate an effective capacity of the edges. The controller can then generate a stable routing pattern based upon the recovered information and the effective capacity. The controller can deploy the stable routing pattern in the hybrid SDN network.

Patent Agency Ranking