公开(公告)号：US20190222504A1

公开(公告)日：2019-07-18

申请号：US15870309

申请日：2018-01-12

Applicant: Juniper Networks, Inc.

Inventor： Swamy Sadashivaiah Renu Kananda ,  Nitin Kumar ,  Scott Mackie ,  Surya Chandra Sekhar Nimmagadda

IPC: H04L12/751

CPC classification number: H04L45/02 ,  H04L45/38 ,  H04L45/64 ,  H04L67/42

Abstract: In one example, a method comprises receiving, by a forwarding manager for an internal forwarding path executed by at least one packet processor of a forwarding unit of a network device, one or more packet processing operations from a control unit of the network device; generating, by the forwarding manager based on the one or more packet processing operations, a plurality of nodes each comprising a unique token, wherein a first node of the plurality of nodes includes a token reference set to a value for the token of a second node of the plurality of nodes; configuring, by the forwarding manager based on the nodes, the forwarding path to include respective forwarding path elements for the plurality of nodes; and processing, by the packet processor, a packet received by the forwarding unit by executing the forwarding path elements.

公开(公告)号：US20190199622A1

公开(公告)日：2019-06-27

申请号：US16285943

申请日：2019-02-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ishan VAISHNAVI ,  David Perez ,  Qing Wei

IPC: H04L12/721 ,  H04L12/947

CPC classification number: H04L45/38 ,  H04L41/0889 ,  H04L41/0893 ,  H04L41/20 ,  H04L45/64 ,  H04L49/25

Abstract: This embodiments of the invention relates to a data packet forwarding unit (202) configured to forward data packets within a data transmission network on the basis of data packet forwarding rules, wherein the data transmission network comprises a control plane and a separate data plane. The data packet forwarding unit (202) comprises a storage unit (202b) configured to store at least one of data transmission profiles, wherein each data transmission profile comprises at least one data packet forwarding rule, and a processor (202a) configured to select a data transmission profile from the at least one data transmission profiles and to forward data packets within the data transmission network on the basis of the at least one data packet forwarding rule of the selected data transmission profile.

公开(公告)号：US20190190814A1

公开(公告)日：2019-06-20

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: H04L12/755 ,  H04L12/715 ,  H04L12/703 ,  H04L12/741

CPC classification number: H04L45/021 ,  H04L45/28 ,  H04L45/42 ,  H04L45/44 ,  H04L45/54 ,  H04L45/56 ,  H04L45/64

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.

公开(公告)号：US20190140947A1

公开(公告)日：2019-05-09

申请号：US16236782

申请日：2018-12-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Shunwan Zhuang ,  Junlin Zhang ,  Nan Wu

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L45/306 ,  H04L45/64

Abstract: A service function chaining (SFC)-based packet forwarding method, an apparatus, and a system, where the packet forwarding method includes receiving, by a first service function forwarding node, a packet forwarding rule from a control node, where the packet forwarding rule indicating a mapping relationship between a match item of traffic characteristic information of a packet and route prefix information, receiving, by the first service function forwarding node, a first packet, where a header of the first packet carries traffic characteristic information of the first packet, determining, by the first service function forwarding node based on the packet forwarding rule, target route prefix information corresponding to the traffic characteristic information of the first packet, determining, by the first service function forwarding node, target next-hop information based on the target route prefix information, and forwarding the first packet based on the target next-hop information.

公开(公告)号：US20190104087A1

公开(公告)日：2019-04-04

申请号：US15844338

申请日：2017-12-15

Applicant: Juniper Networks, Inc.

Inventor： Babu Singarayan ,  Nitin Kumar ,  Raghavendra Mallya ,  Jeyananth Minto Jeganathan ,  Kaliraj Vairavakkalai

IPC: H04L12/933 ,  H04L12/947 ,  H04L12/721 ,  H04L12/715

CPC classification number: H04L49/15 ,  H04L45/02 ,  H04L45/64 ,  H04L45/66 ,  H04L49/25 ,  H04L49/70

Abstract: In one example, a management component executing on a single-chassis network device configures a virtual node with an abstract fabric interface having, as a destination address, identifiers of packet processors (e.g., PTFE-IDs) assigned to the virtual node on the other end of the abstract fabric interface. The management component of the single-chassis network device pre-creates an underlay network by using the fabric links at the packet processor. When the management component creates and connects an abstract fabric interface on the virtual nodes, the management component forms an overlay network and attaches the overlay network to the underlay network, e.g., by programming the forwarding plane packet processor, to connect the virtual nodes. However, users of the network device, external devices, and routing protocols will not view the abstract fabric interface as an overlay interface, but as a regular Ethernet interface (e.g., a Gigabit Ethernet interface)

公开(公告)号：US20190028381A1

公开(公告)日：2019-01-24

申请号：US16137817

申请日：2018-09-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenbin LI ,  Shunwan ZHUANG ,  Xia CHEN ,  Nan WU ,  Qiandeng LIANG

IPC: H04L12/715 ,  H04L12/741 ,  H04L12/713 ,  H04L12/46 ,  H04L29/06

CPC classification number: H04L45/04 ,  H04L12/4641 ,  H04L29/06 ,  H04L45/54 ,  H04L45/586 ,  H04L45/64 ,  H04L69/03

Abstract: Embodiments of the present invention provide a Flow Specification-based communications method, device, and system. The method includes: obtaining, by a controller, a requirement indicating that a first resource on a forwarding device needs to be associated with a second resource on the forwarding device; and sending, by the controller, a Border Gateway Protocol Flow Specification BGP Flow Spec protocol packet according to the requirement, where the BGP Flow Spec protocol packet includes a network layer reachability information field and an extended community attribute field, the network layer reachability information field carries characteristic information of the first resource, the extended community attribute field carries a global identifier GID used to indicate the second resource, and the BGP Flow Spec protocol packet is used to instruct to associate the first resource with the second resource.

公开(公告)号：US20190020501A1

公开(公告)日：2019-01-17

申请号：US15650693

申请日：2017-07-14

Applicant: Nicira, Inc.

Inventor： Jia Yu ,  Yong Wang ,  Xinhua Hong

IPC: H04L12/46 ,  H04L12/66 ,  H04L12/24 ,  H04L12/26 ,  H04L12/751 ,  H04L12/733 ,  H04L12/725 ,  H04L12/717 ,  H04L12/721 ,  H04L12/713 ,  H04L12/715 ,  H04L12/741 ,  H04L12/801 ,  H04L12/947 ,  H04L12/935 ,  H04L12/931 ,  H04L12/861 ,  H04L29/12 ,  H04L29/08

CPC classification number: H04L12/4654 ,  H04L12/66 ,  H04L41/0654 ,  H04L41/0806 ,  H04L41/145 ,  H04L43/08 ,  H04L43/0817 ,  H04L43/106 ,  H04L45/02 ,  H04L45/122 ,  H04L45/22 ,  H04L45/306 ,  H04L45/38 ,  H04L45/42 ,  H04L45/44 ,  H04L45/586 ,  H04L45/64 ,  H04L45/72 ,  H04L45/74 ,  H04L45/745 ,  H04L47/19 ,  H04L49/25 ,  H04L49/3009 ,  H04L49/3063 ,  H04L49/354 ,  H04L49/9068 ,  H04L61/103 ,  H04L61/2015 ,  H04L61/2503 ,  H04L61/2585 ,  H04L61/6022 ,  H04L61/6063 ,  H04L67/1002 ,  H04L67/1038 ,  H04L67/1095 ,  H04L67/2842 ,  H04L67/327 ,  H04L69/16 ,  H04L69/321 ,  H04L69/322 ,  H04L69/326 ,  H04L69/329

Abstract: A method of utilizing the same hardware network interface card (NIC) in a gateway of a datacenter to communicate datacenter tenant packet traffic and packet traffic for a set of applications that execute in the user space of the gateway and utilize a network stack in the kernel space of the gateway. The method sends and receives packets for the datacenter tenant packet traffic through a packet datapath in the user space. The method sends incoming packets from the NIC to the set of applications through the datapath in the user space, a user-kernel transport driver connecting the kernel network stack to the datapath in the user space, and the kernel network stack. The method receives outgoing packets at the NIC from the set of applications through the kernel network stack, the user-kernel transport driver, and the data path in the user space.

公开(公告)号：US20180359182A1

公开(公告)日：2018-12-13

申请号：US15969326

申请日：2018-05-02

Applicant: Metaswitch Networks Ltd

Inventor： Simon Wingrove ,  Michael Curtis ,  Shaun Crampton ,  Alex Pollitt

IPC: H04L12/741

CPC classification number: H04L45/74 ,  H04L45/64

Abstract: Measures, including methods, systems, non-transitory computer-readable storage mediums and computer programs for use in routing packet data. At a network switching device, a data packet is received from a device located upstream of the network switching device. The received data packet comprises routing data associated with a routing decision which has been taken for the data packet upstream of the network switching device. The routing data comprises an abstract media access control (MAC) address corresponding to a next hop destination for the data packet located downstream of the network switching device. At the network switching device, the abstract MAC address in the data packet is replaced with a real MAC address of the next hop downstream destination. At the network switching device, the data packet is forwarded towards the next hop downstream destination.

公开(公告)号：US20180352058A1

公开(公告)日：2018-12-06

申请号：US16042273

申请日：2018-07-23

Applicant: International Business Machines Corporation

Inventor： Jin Jing Lin ,  Gang Tang ,  Jian Hua Xia ,  Ming Shuang Xian

IPC: H04L29/08 ,  H04L12/715

CPC classification number: H04L41/5003 ,  H04L45/64 ,  H04L47/2408 ,  H04L49/70 ,  H04L69/325 ,  Y02D30/30

Abstract: An approach is provided in which an information handling system receives, at a network virtualization edge (NVE), a set of Diffserv parameters comprising at least one classifier parameter, at least one meter parameter, at least one marker parameter, and at least one shaper/dropper parameter. The NVE performs a deep inspection on a plurality of data packets to classify the plurality of data packets at one or more classification levels. In turn, the NVE passes the set of Diffserv parameters and the one or more classification levels to underlay switch hardware.

公开(公告)号：US20180331921A1

公开(公告)日：2018-11-15

申请号：US16042710

申请日：2018-07-23

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chengyong Lin ,  Enhui Liu ,  Wenyang Lei

IPC: H04L12/24 ,  H04L29/06 ,  H04L12/931 ,  H04L12/721 ,  H04L12/715

CPC classification number: H04L41/5077 ,  H04L41/5041 ,  H04L45/38 ,  H04L45/64 ,  H04L45/745 ,  H04L49/00 ,  H04L63/0263 ,  H04L63/10

Abstract: A packet processing method, a forwarding plane device and a network device, where the method includes receiving, by a forwarding plane device, a first packet transmitted by a user, where an identity of the user is comprised in the first packet, and a forwarding table is comprised in the forwarding plane device, determining, by the forwarding plane device, an identity of a service according to a corresponding relationship between the identity of the user and the identity of the service as well as the identity of the user in the first packet, generating, by the forwarding plane device, a second packet by encapsulating the first packet with the identity of the service, and transmitting the second packet to a network device to enable the network device to manage the service according to the identity of the service in the second packet.