公开(公告)号：US20180183704A1

公开(公告)日：2018-06-28

申请号：US15392794

申请日：2016-12-28

Applicant: OZYEGIN UNIVERSITESI

Inventor： Selçuk CEVHER

IPC: H04L12/707 ,  H04L12/741 ,  H04L12/721 ,  H04L29/06 ,  H04L12/46

CPC classification number: H04L45/24 ,  H04L12/4641 ,  H04L45/22 ,  H04L45/38 ,  H04L45/745

Abstract: A software defined networking (SDN) controller and methods for protecting against failure of a network element in a forwarding plane are provided. A multi-topology routing based IP fast re-route (MTR-IPFRR) process is configured to: if a new traffic flow is detected in the forwarding plane, determine a primary path for relaying network traffic to a destination node using primary forwarding tables; for each network element along the primary path, determine and associate a virtual topology (VT) which protects the network element from relaying network traffic; determine a protecting path for each protected network element along the primary path using an associated VT; and program each node along the primary path to be switchable to a protecting path associated with an adjacent network element to reroute network traffic from an anticipated failed network element.

公开(公告)号：US10009264B2

公开(公告)日：2018-06-26

申请号：US15023020

申请日：2013-09-20

Applicant: NOKIA SOLUTIONS AND NETWORKS GMBH & CO. KG

Inventor： Klaus Hoffmann

IPC: H04L12/28 ,  H04L12/721 ,  H04L12/24 ,  H04L12/46 ,  H04L12/741 ,  H04L29/08 ,  H04L12/26

CPC classification number: H04L45/38 ,  H04L12/4633 ,  H04L41/0206 ,  H04L41/0213 ,  H04L41/0806 ,  H04L43/026 ,  H04L43/10 ,  H04L45/745 ,  H04L67/34

Abstract: There are provided measures for handling a signaling message on a data plane in a software-defined architecture. Such measures may exemplarily comprise establishing, in a control plane entity, an instruction for reacting to a specific incoming signaling message on the data plane with a corresponding outgoing message on the data plane, providing the established instruction from the control plane entity to a data plane entity for instructing the data plane entity to react to the specific incoming signaling message with the corresponding outgoing message in accordance with the established instruction, and reacting, in the data plane entity, upon detection of the specific incoming signaling message on the data plane, to the specific incoming signaling message on the data plane in accordance with the provided instruction.

公开(公告)号：US20180176294A1

公开(公告)日：2018-06-21

申请号：US15736220

申请日：2015-06-26

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Juliano Vacaro ,  Sebastien Tandel ,  Bryan Stiekes

IPC: H04L29/08 ,  H04L12/803 ,  H04L12/721

CPC classification number: H04L67/1004 ,  H04L45/38 ,  H04L47/125 ,  H04L67/1002

Abstract: Examples relate to load balancing servers. In one example, a computing device may: receive a network packet from a source device, the network packet including data specifying a value; divide the value included in the network packet by a divisor; determine, from a plurality of servers, a destination server for the network packet based on a remainder of the division; and forward the network packet to the destination server.

公开(公告)号：US10003503B2

公开(公告)日：2018-06-19

申请号：US15298476

申请日：2016-10-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jiao Wang

IPC: H04L12/46 ,  H04L12/24 ,  H04L12/721 ,  H04L12/715

CPC classification number: H04L41/12 ,  H04L12/4633 ,  H04L45/38 ,  H04L45/64

Abstract: A tunnel type selection method and apparatus, which relate to the field of information technologies, and can reduce data packet forwarding complexity. The method includes first, combining, by a controller, a code and a label value that are corresponding to a tunnel type supported by a next-hop switch, generating an OXM_OF_TUNNEL_ID match field, and sending a forwarding policy that carries the OXM_OF_TUNNEL_ID match field to a previous-hop OPENFLOW switch, then, extracting, by the previous-hop OPENFLOW switch, the code and the label value that are corresponding to the tunnel type, and encapsulating a data packet according to the code and the label value that are corresponding to the tunnel type, finally, sending, by the previous-hop OPENFLOW switch, the encapsulated data packet to the next-hop switch. The embodiments of the present disclosure are applicable to data packet forwarding in a hybrid networking environment of an OPENFLOW switch and a conventional switch.

公开(公告)号：US20180167338A1

公开(公告)日：2018-06-14

申请号：US15373616

申请日：2016-12-09

Applicant: Cisco Technology, Inc.

Inventor： Sameer Dilip MERCHANT ,  Sarang DHARMAPURIKAR ,  Praveen JAIN

IPC: H04L12/931 ,  H04L12/721 ,  H04L12/725 ,  H04L29/06

CPC classification number: H04L49/70 ,  H04L45/304 ,  H04L45/38 ,  H04L45/7457 ,  H04L63/0218 ,  H04L63/0254 ,  H04L63/101 ,  H04L63/1441 ,  H04L63/166

Abstract: Techniques for providing a reflexive access control list (ACL) on a virtual switch are provided. Embodiments receive a first packet corresponding to a first network flow and a second packet corresponding to a second network flow. Upon determining that a SYN flag is set within the first packet, a first entry is created in the reflexive ACL for the first network flow. Upon determining that the first packet was received over a client port of the first physical switch, the first packet is forwarded to a second physical switch within virtual switch. Upon determining that the second packet has a SYN flag enabled, a second entry is created in the reflexive ACL. Finally, upon determining that the second packet was received from the second physical switch, the second packet is forwarded over an uplink port to a destination defined by the second packet.

公开(公告)号：US20180152381A1

公开(公告)日：2018-05-31

申请号：US15880828

申请日：2018-01-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaojun LIU

IPC: H04L12/801

CPC classification number: H04L47/12 ,  G06F9/45533 ,  H04L41/0896 ,  H04L41/5022 ,  H04L41/5025 ,  H04L41/5054 ,  H04L41/5096 ,  H04L45/38

Abstract: Embodiments of the present invention disclose a flow control method and apparatus under an NFV architecture. The method includes: virtualizing a physical resource into multiple virtual resources that are used to independently run services, and dividing the physical resource into multiple sub physical resources, where there is a correspondence between the virtual resource and the sub physical resource; obtaining a preset mapping relationship between a service priority and the virtual resource, and setting a priority for the virtual resource according to the preset mapping relationship between the service priority and the virtual resource; and when a service traffic burst causes congestion of the physical resource, controlling, according to the priority of the virtual resource and the correspondence between the virtual resource and the sub physical resource, the sub physical resource that is used by the virtual resource.

公开(公告)号：US09985870B2

公开(公告)日：2018-05-29

申请号：US15222982

申请日：2016-07-29

Applicant: NANNING FUGUI PRECISION INDUSTRIAL CO., LTD.

Inventor： Bo-Run Shao ,  Shih-Neng Lin ,  Chia-Wei Yuan

IPC: G06F11/00 ,  H04J1/16 ,  H04L1/00 ,  H04L12/26 ,  H04L12/727 ,  H04L12/715 ,  H04L29/06 ,  H04L12/721 ,  H04L12/707 ,  H04L12/751 ,  H04N7/15 ,  H04N7/14

CPC classification number: H04L45/121 ,  H04L45/02 ,  H04L45/22 ,  H04L45/38 ,  H04L45/64 ,  H04L65/403 ,  H04L65/608 ,  H04N7/147 ,  H04N7/15

Abstract: A network service method based Software Defined Networking (SDN) assigns forwarding devices according to network addresses and identification of a client and provides the client with an optimum route according to user requirements and current network states. A continuous monitoring process is continuously performed for route optimization based on network states, topology variations, and user feedbacks.

公开(公告)号：US20180145949A1

公开(公告)日：2018-05-24

申请号：US15858623

申请日：2017-12-29

Applicant: SonicWALL US Holdings Inc.

Inventor： Hui Ling ,  Zhong Chen

IPC: H04L29/06 ,  H04L29/08 ,  H04L29/12

CPC classification number: H04L63/0254 ,  H04L43/028 ,  H04L45/38 ,  H04L45/42 ,  H04L61/2007 ,  H04L63/0245 ,  H04L63/1408 ,  H04L63/1441 ,  H04L67/10 ,  H04L69/22

Abstract: The present invention relates to a method and system for performing deep packet inspection of messages transmitted through a network switch in a Software Defined Network (SDN). Embodiments of the invention include a network switch, a controller, and a firewall in a software defined networking environment. In the present invention, the network switch is a simple network switch that is physically separate from the controller and the firewall. The invention may include a plurality of physically distinct network switches communicating with one or more controllers and firewalls. In certain instances, communications between the network switch, the controller, and the firewall are performed using the Open Flow standard communication protocol.

公开(公告)号：US20180145908A1

公开(公告)日：2018-05-24

申请号：US15357849

申请日：2016-11-21

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Kevin C. Fox

IPC: H04L12/741 ,  H04L12/755 ,  H04L12/745 ,  H04L29/08 ,  H04L29/12 ,  H04L29/06

CPC classification number: H04L45/745 ,  H04L45/02 ,  H04L45/021 ,  H04L45/306 ,  H04L45/38 ,  H04L45/7453 ,  H04L45/748 ,  H04L61/1552 ,  H04L63/126 ,  H04L67/1097 ,  H04L67/141 ,  H04L67/16 ,  H04L67/2804 ,  H04L67/2842 ,  H04L67/327

Abstract: One embodiment provides a system which facilitates exchanging identifying information between connected nodes. During operation, the system generates, by an intermediate node for an adjacent node, an interest which includes an identifier for the intermediate node and a name for a link between the intermediate node and the adjacent node. In response to the interest, the system receives from the adjacent node a content object which includes an identifier for the adjacent node. The system creates an entry in a first data structure mapping the adjacent node's identifier to a first outgoing interface associated with the link. In response to receiving a first routing update for a first name prefix based on the adjacent node's identifier, the system updates a first forwarding information base based on the adjacent node's identifier, thereby facilitating the exchange of the identifying information between the connected nodes without requiring an external agent.

公开(公告)号：US09979640B2

公开(公告)日：2018-05-22

申请号：US14580981

申请日：2014-12-23

Applicant: Intel Corporation

Inventor： Anil Vasudevan ,  Parthasarathy Sarangam ,  Eric Mann ,  Daniel Cohn

IPC: G06F11/00 ,  H04L12/741 ,  H04L12/801 ,  H04L12/873 ,  H04L12/863 ,  H04L12/721

CPC classification number: H04L45/74 ,  H04L45/38 ,  H04L47/115 ,  H04L47/52 ,  H04L47/54

Abstract: Devices and techniques for reorder resilient transport are described herein. A device may store data packets in sequential positions of a flow queue in an order in which the data packets were received. The device may retrieve a first data packet from a first sequential position and a second data packet from a second sequential position that is next in sequence to the first sequential position in the flow queue. The device may store the first data packet and the second data packet in a buffer and refrain from providing the first data packet and the second data packet to upper layer circuitry if the packet order information for the first data packet and the second data packet indicate that the first data packet and the second data packet were received out of order. Other embodiments are also described.