公开(公告)号：US11706125B2

公开(公告)日：2023-07-18

申请号：US17028772

申请日：2020-09-22

Applicant: Cisco Technology, Inc.

Inventor： Sebastian Jeuk ,  Ralf Rantzau ,  Gonzalo Salgueiro

IPC: H04L45/16 ,  H04L12/18 ,  H04L12/54 ,  H04L45/74 ,  H04L12/70

CPC classification number: H04L45/16 ,  H04L12/185 ,  H04L12/56 ,  H04L45/74 ,  H04L2012/5625

Abstract: In an embodiment, a data processing method comprises receiving, at a BIER replicator node that is programmed to implement Bit Index Explicit Replication (BIER) protocol, from a data source, a multicast stream packet identifying a service-level multicast group address; using the BIER replicator node, replicating the multicast stream packet according to BIER protocol and transmitting two or more replicated packet streams to two or more BIER receiver nodes that are programmed to implement BIER; using the two or more BIER receiver nodes, transmitting the two or more replicated packet streams to two or more receivers. Other embodiments may use modified iOAM (In-situ Operations, Administration, and Maintenance) techniques.

公开(公告)号：US10855577B2

公开(公告)日：2020-12-01

申请号：US16107040

申请日：2018-08-21

Applicant: Cisco Technology, Inc.

Inventor： Sebastian Jeuk ,  Ralf Rantzau ,  Gonzalo Salgueiro

IPC: H04L12/761 ,  H04L12/18 ,  H04L12/54 ,  H04L12/741 ,  H04L12/70

Abstract: In an embodiment, a data processing method comprises receiving, at a BIER replicator node that is programmed to implement Bit Index Explicit Replication (BIER) protocol, from a data source, a multicast stream packet identifying a service-level multicast group address; using the BIER replicator node, replicating the multicast stream packet according to BIER protocol and transmitting two or more replicated packet streams to two or more BIER receiver nodes that are programmed to implement BIER; using the two or more BIER receiver nodes, transmitting the two or more replicated packet streams to two or more receivers. Other embodiments may use modified iOAM (In-situ Operations, Administration, and Maintenance) techniques.

公开(公告)号：US10742686B2

公开(公告)日：2020-08-11

申请号：US16116521

申请日：2018-08-29

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Ralf Rantzau ,  Rajath Agasthya ,  Sebastian Jeuk ,  Sridar Kandaswamy

IPC: H04L29/06

Abstract: A method and apparatus for dynamic integration of a covert namespace are provided. A Software-Defined Networking (SDN) controller is configured to send a request for workload transfer to an endpoint where the endpoint is connected to a virtual switch. The SDN controller determines that a connection between the endpoint and the virtual switch is secure based on a tenant-specific policy associated with the endpoint. A first covert namespace is configured to be connected between the endpoint and the virtual switch to communicate to the endpoint and the virtual switch directly. The operations of the virtual switch are executed using the first covert namespace according to the tenant-specific policy. A workload is caused to be transmitted to the endpoint through the first covert namespace.

公开(公告)号：US20200021663A1

公开(公告)日：2020-01-16

申请号：US16581636

申请日：2019-09-24

Applicant: Cisco Technology, Inc.

Inventor： Marc Solanas Tarre ,  Ralf Rantzau ,  Debojyoti Dutta ,  Manoj Sharma

IPC: H04L29/08

Abstract: Approaches are disclosed for distributing messages across multiple data centers where the data centers do not store messages using a same message queue protocol. In some embodiment, a network element translates messages from a message queue protocol (e.g., Kestrel, RABBITMQ, APACHE Kafka, and ACTIVEMQ) to an application layer messaging protocol (e.g., XMPP, MQTT, WebSocket protocol, or other application layer messaging protocols). In other embodiments, a network element translates messages from an application layer messaging protocol to a message queue protocol. Using the new approaches disclosed herein, data centers communicate using, at least in part, application layer messaging protocols to disconnect the message queue protocols used by the data centers and enable sharing messages between messages queues in the data centers. Consequently, the data centers can share messages regardless of whether the underlying message queue protocols used by the data centers (and the network devices therein) are compatible with one another.

公开(公告)号：US10419294B2

公开(公告)日：2019-09-17

申请号：US15278740

申请日：2016-09-28

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Rahul Ramakrishna ,  Yathiraj B. Udupi ,  Ralf Rantzau

IPC: H04L12/24 ,  H04L12/26 ,  H04L29/08 ,  H04L12/801

Abstract: In an example, there is disclosed a logging server computing apparatus, having: a processor; a memory; and a logging engine to: analyze a network; build an entity-state matrix M from an entity vector e and a state vector s; determine that there is a strong correlation between an entity ec and a state sc; and report the strong correlation.

公开(公告)号：US20190147070A1

公开(公告)日：2019-05-16

申请号：US15811124

申请日：2017-11-13

Applicant: Cisco Technology, Inc.

Inventor： Ralf Rantzau ,  Madhu S. Kumar ,  Johnu George ,  Amit Kumar Saha ,  Debojyoti Dutta

IPC: G06F17/30 ,  G06F11/14

Abstract: Systems, methods, and computer-readable media for managing storing of data in a data storage system using a client tag. In some examples, a first portion of a data load as part of a transaction and a client identifier that uniquely identifies a client is received from the client at a data storage system. The transaction can be tagged with a client tag including the client identifier and the first portion of the data load can be stored in storage at the data storage system. A first log entry including the client tag is added to a data storage log in response to storing the first portion of the data load in the storage. The first log entry is then written from the data storage log to a persistent storage log in persistent memory which is used to track progress of storing the data load in the storage.