公开(公告)号：US12034651B2

公开(公告)日：2024-07-09

申请号：US17867345

申请日：2022-07-18

Applicant: NEVION AS

Inventor： Andrew Rayner

IPC: H04L49/55 ,  H04L49/35 ,  H04L49/60 ,  H04L49/90 ,  H04L65/1101 ,  H04L65/61 ,  H04L65/65 ,  H04L65/75 ,  H04L69/08 ,  H04N21/234 ,  H04N21/236 ,  H04N21/2381 ,  H04N21/434 ,  H04N21/438 ,  H04N21/643 ,  H04L49/101 ,  H04L49/351 ,  H04N21/44

CPC classification number: H04L49/557 ,  H04L49/35 ,  H04L49/602 ,  H04L49/90 ,  H04L65/1101 ,  H04L65/61 ,  H04L65/65 ,  H04L65/765 ,  H04L69/08 ,  H04N21/23406 ,  H04N21/23602 ,  H04N21/2381 ,  H04N21/4342 ,  H04N21/4383 ,  H04N21/64322 ,  H04L49/101 ,  H04L49/351 ,  H04N21/44004

Abstract: An asynchronous switching system and method for processing data streams, the system and method utilizing one or more buffers for cleaning up an output of a dirty switch.

公开(公告)号：US11882061B2

公开(公告)日：2024-01-23

申请号：US17619189

申请日：2019-06-24

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Shoko Oteru ,  Shuhei Yoshida ,  Yuta Ukon ,  Namiko Ikeda ,  Koyo Nitta

IPC: H04L49/9057 ,  H04L1/1607 ,  H04L47/28 ,  H04L47/34 ,  H04L49/55

CPC classification number: H04L49/9057 ,  H04L1/1621 ,  H04L47/28 ,  H04L47/34 ,  H04L49/557

Abstract: A data sequence correction method for temporarily saving data with sequence information in a ring buffer and performing sequence correction is provided. The ring buffer includes a number of storage regions, a monitoring section having one or more continuous sequence numbers, and an acceptance section having a first or second sequence number of the monitoring section as a start sequence number and a sequence number immediately preceding the start sequence number of the monitoring section as an end sequence number. The method includes, when a value determined based on a remainder obtained by dividing a sequence number of received data by the number of storage regions is inside the acceptance section, writing the received data in a position of the storage region corresponding to the determined value, and when data are written in the entire monitoring section, reading out all the data in the monitoring section.

公开(公告)号：US20190222306A1

公开(公告)日：2019-07-18

申请号：US16358832

申请日：2019-03-20

Applicant: ORCKIT IP, LLC

Inventor： Daniel Cohn ,  Rafi Ram

IPC: H04B10/032 ,  H04L12/939 ,  H04Q11/00 ,  H04L12/721 ,  H04L12/703

CPC classification number: H04B10/032 ,  H04L45/28 ,  H04L45/68 ,  H04L49/557 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: A method is presented for supporting SNCP over a packet network connecting to two SDH sub-networks and transporting one or more SDH paths that are SNCP-protected in both SDH sub-networks. The packet network connects to each of two sub-network interconnection points by a working path and a protection path. The packet sub-network may provide the same type of path protection as an SDH sub-network using SNCP, while avoiding bandwidth duplication.

公开(公告)号：US20180248800A1

公开(公告)日：2018-08-30

申请号：US15753826

申请日：2016-08-09

Applicant: POCO-APOCO NETWORKS CO. LTD.

Inventor： Kazunari INOUE

IPC: H04L12/743 ,  G06F12/00 ,  G11C15/04 ,  H04L12/26

CPC classification number: H04L45/7453 ,  G06F12/00 ,  G06F12/0875 ,  G06F12/1483 ,  G11C15/00 ,  G11C15/04 ,  H04L43/026 ,  H04L43/12 ,  H04L45/7457 ,  H04L47/6215 ,  H04L49/109 ,  H04L49/557 ,  H04L49/9047

Abstract: A memory device is configured as single chip to achieve routing control, bandwidth control, traffic monitoring, buffering, and access control of network functions. The memory device includes a search unit that includes a first memory unit and performs a search operation by searching, from the first memory unit, a piece of data corresponding to an input search key, a statistical information processing unit that includes a second memory unit that stores statistical information including the input search key, with which the piece of data has been successfully searched by the search unit, and an address of the piece of data in the first memory unit, and an arithmetic operation unit that updates the statistical information when the search unit successfully searches the pieces of data corresponding to the input search key.

公开(公告)号：US09979678B2

公开(公告)日：2018-05-22

申请号：US14989904

申请日：2016-01-07

Applicant: III HOLDINGS 1, LLC

Inventor： Kaiyuan Huang ,  Michael F. Kemp

IPC: H04L12/939 ,  G06F11/20 ,  H04L12/46 ,  H04L12/707 ,  H04L12/703 ,  H04L12/753 ,  H04L12/721 ,  H04L12/26

CPC classification number: H04L49/557 ,  G06F11/2005 ,  G06F11/2007 ,  H04L12/4641 ,  H04L43/0811 ,  H04L45/123 ,  H04L45/22 ,  H04L45/28 ,  H04L45/48

Abstract: In a networked multi computer environment with redundant links, network interface cards (NICs) are commonly duplicated and teamed to provide a recovery mechanism when network components fail. Embodiments of the present inventions avoid teaming of pairs of NICs and provide a computing host with redundant network connections for the computing host through a switch that is transparent to the computing host. The computing host itself; that is, its hardware and software, is relieved of the duty of network access redundancy and returned to the simple, simplex networking operating mode. The switch replaces a potentially large number of NICs and the need for computing host network access redundancy management which leads to hardware and software cost reductions and increases the robustness and reliability of the system through redundant network access.

公开(公告)号：US09954800B2

公开(公告)日：2018-04-24

申请号：US13059037

申请日：2009-08-05

Applicant: Jon Beecroft ,  Anthony Michael Ford ,  David Charles Hewson

Inventor： Jon Beecroft ,  Anthony Michael Ford ,  David Charles Hewson

IPC: H04L12/939 ,  H04L12/947 ,  H04L12/933 ,  H04L12/937

CPC classification number: H04L49/557 ,  H04L49/1515 ,  H04L49/25 ,  H04L49/253

Abstract: A multi-path network for use in a bridge, switch, router, hub or the like, includes a plurality of network ports; a plurality of network elements; and a plurality of network links interconnecting the network elements and the network ports, for transporting data packets. Each network element has a fault monitor for detecting faults on the network links to which the network element is connected, a plurality of dynamically selectable output ports and output port selection mechanism. Each network element also being adapted to communicate the existence of a fault back to one or more other network elements so that network elements connected to the faulty network link can be bypassed, and each network element being adapted to update the output port selection mechanism when communication of the existence of a fault is received so that only those output ports which ensure the faulty network link is bypassed are dynamically selectable. Also, a method of managing faults in a multi-path network utilizes a similar methodology to insure that identified faults are avoided.

公开(公告)号：US20180034746A1

公开(公告)日：2018-02-01

申请号：US15483591

申请日：2017-04-10

Applicant: General Electric Technology GmbH

Inventor： Mitalkumar G. Kanabar ,  Ihab Hamour

IPC: H04L12/939 ,  H04L12/24

CPC classification number: H04L49/557 ,  H02J13/0006 ,  H04L41/0654 ,  H04L41/069 ,  H04L41/0806 ,  Y02E60/723 ,  Y02E60/724 ,  Y02E60/74 ,  Y04S10/16 ,  Y04S10/18 ,  Y04S10/30

Abstract: Systems and methods for network failover in digital substations are provided. One method includes receiving, by an intelligent electronic device (IED) from a process interface unit (PIU), in parallel a pre-configured data stream via a point-to point connection and one or more other data streams via an Ethernet network. The method further includes determining that at least one of the following failure conditions is satisfied: a frame in the pre-configured data stream is lost or delayed, quality of the data in the frame in the data stream is below a first threshold, period of the time associated with the data in the frame in the data stream is below a second threshold, or a health indicator associated with the PIU is below a third threshold. The method further allows identifying at least one redundant frame in the one or more other data streams. If the quality of data in redundant frame is satisfactory, the method proceeds to use the redundant frame for further processing.

公开(公告)号：US09866428B2

公开(公告)日：2018-01-09

申请号：US14725493

申请日：2015-05-29

Applicant: Juniper Networks, Inc.

Inventor： Usha Sharma

IPC: H04L12/50 ,  H04L12/24 ,  H04L29/14 ,  H04L12/947 ,  H04L12/939 ,  G06F11/16

CPC classification number: H04L41/0654 ,  G06F11/16 ,  G06F11/2005 ,  H04L49/25 ,  H04L49/557 ,  H04L69/40

Abstract: A network device includes a first and a second control board, with each control board having a separate control plane and fabric plane. The network device is configured to establish an active control plane on the first control board and an active fabric plane on the second control board. The network device is configured to establish a standby fabric plane on the first control board and a standby control plane on the second control board. The network device is configured to detect a failure on the first control board or the second control board and switch the status of the control plane on the second control board from standby to active, when the failure is on the first control board, and switches the status of the fabric plane on the first control board from standby to active when the failure is on the second control board.

公开(公告)号：US20170353236A1

公开(公告)日：2017-12-07

申请号：US15663763

申请日：2017-07-30

Applicant: ORCKIT IP, LLC

Inventor： Daniel Cohn ,  Rafi Ram

IPC: H04B10/032 ,  H04L12/721 ,  H04L12/703 ,  H04L12/939 ,  H04Q11/00

CPC classification number: H04B10/032 ,  H04L45/28 ,  H04L45/68 ,  H04L49/557 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: A method is presented for supporting SNCP over a packet network connecting to two SDH sub-networks and transporting one or more SDH paths that are SNCP-protected in both SDH sub-networks. The packet network connects to each of two sub-network interconnection points by a working path and a protection path. The packet sub-network may provide the same type of path protection as an SDH sub-network using SNCP, while avoiding bandwidth duplication.

公开(公告)号：US09813329B2

公开(公告)日：2017-11-07

申请号：US14727773

申请日：2015-06-01

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Madhavan Jayabalan ,  Arnab Choudhury ,  Kousik Nandy

IPC: H04L1/00 ,  H04L12/703 ,  H04L12/24 ,  H04L12/741 ,  H04L12/751 ,  H04L12/939 ,  H04L12/26

CPC classification number: H04L45/28 ,  H04L41/0654 ,  H04L41/0663 ,  H04L43/0805 ,  H04L45/026 ,  H04L45/74 ,  H04L49/557

Abstract: A method is implemented by a network device for improving availability of network component using multi-chassis redundancy by efficiently re-routing data traffic intended for the network component in the event of a link or node failure. The network device is in a set of network devices hosting the network component each network device in the set of network devices having a shared cluster identifier and a separate node identifier. The set of network devices hosting the network component share a virtual internet protocol address.