International Business Machines Corporation

Lenovo (singapore) Pte. Ltd.

Globalfoundries Inc.

Mircea R Gusat

Cyriel Johan Minkenberg

Casimer M DeCusatis

Keshav G Kamble

Daniel Crisan

Fredy Daniel Neeser

Renato John Recio

Claude Basso

Kenneth Michael Valk

Nikolaos Chrysos

Robert Birke

Vijoy A Pandey

Rolf Clauberg

Vinit Jain

William Joseph Armstrong

Chih-Jen Chang

Bhalachandra G Banavalikar

Maria Soimu

Bruno Michel

Thomas E Morf

Ronald Peter Luijten

Jeffrey James Lynch

Yiyu L Chen

Andreea Anghel

Wolfgang Emil Denzel

Kenneth M Walk

Rajaram B Krishnamurthy

Charalampos Pozidis

Clark Debs Jeffries

Ioannis Koltsidas

Silvio Dragone

Elli Androulaki

Francois Abel

Patricia Maria Sagmeister

Maria Gabrani

Ronald Pete Luijten

Michael Anthony Ko

Thomas Schlipf

Walter Hirt

Antonius Paulus Engbersen

German Rodriguez Herrera

Cyriel J A Minkenberg

Andreas Christian Döring

Georgios Kathareios

Hoyt Edwin Bowen, Jr

Mohanraj Krishnaraj

Cyriel Johan Agnes Minkenberg

Serge Monney

Akos Mate

DeCusatis M Casimer

Marc Verhappen

Jose Dusto

Lili Lyubchova Georgieva

Andreea-Simona Anghel

Sebastien Ragot

An embodiment for root cause analysis of computerized system anomalies is provided. The embodiment may include monitoring key performance indicators (KPIs) for a computerized system, wherein KPI values of the monitored KPIs form respective timeseries. The embodiment may include detecting an anomaly in the computerized system based on the monitored KPIs. The embodiment may include determining a troubleshooting time window extending over a given time period. The embodiment may include identifying a strict subset of the monitored KPIs based on portions of the respective timeseries spanning the given time period. The strict subset comprises abnormal KPIs (aKPIs) and potential explanatory KPIs (xKPIs). The embodiment may include obtaining a causal graph of vertices mapping KPIs of the strict subset by running a causality algorithm to evaluate weights of directed edges connecting the vertices and accordingly obtain one or more directed paths. The embodiment may include returning the obtained causal graph.

Root cause analysis of computerized system anomalies based on causal graphs

IEEE 802.1Q and Enhanced Transmission Selection provide only eight different traffic classes that may be used to control bandwidth in a particular physical connection (or link). Instead of relying only on these eight traffic classes to manage bandwidth, the embodiments discussed herein disclose using an Enhanced Transmission Selection scheduler that permits a network device to set the bandwidth for an individual virtual LAN. Allocating bandwidth in a port based on a virtual LAN ID permits a network device to allocate bandwidth to, e.g., millions of unique virtual LANs. Thus, this technique may increase the granular control of the network fabric and its performance.

Flexible and scalable enhanced transmission selection method for network fabrics

Distinct sets of non-stationary data seen on a switch in data communication with one or more of computerized units in a network, are mirrored via two switch ports, which include a first port and a second port. A dual analysis is performed while mirroring said distinct sets of data. First data obtained from data mirrored at the first port are analyzed (e.g., using a trained machine learning model) and, based on the first data analyzed, the switch is reconfigured for the second port to mirror second data, which are selected from non-stationary data as seen on the switch (e.g., data received and/or transmitted by the switch). The second data mirrored at the second port is analyzed (e.g., using a different analysis scheme, suited for the selected data).

Dual-port mirroring system for analyzing non-stationary data in a network

In one embodiment, a method includes receiving a plurality of flows, each flow comprising packets of data and assigning a service credit to each of the plurality of flows. In addition, the method includes assigning a weight parameter to each of the plurality of flows, and selecting a flow from a head of a first control queue unless the first control queue is empty or there is indication that the first control queue should be avoided. A flow is selected from a head of a second control queue in response to a determination that the first control queue is empty or there is indication that the first control queue should be avoided. Additionally, the method includes providing a number of units of service to the selected flow. Moreover, the method includes decreasing the selected flow's service credit by an amount corresponding to the number of units of service provided thereto.

Arbitration of multiple-thousands of flows for convergence enhanced ethernet

A method includes associating overlay network attributes (ONAs) with overlay virtual networks. The ONAs are managed as portable entities. A movement operation is performed on components of at least one overlay virtual network of the overlay virtual networks to servers based on management of the ONAs. An ONA is modified to identify attributes associated with the movement operation of the components of the at least one overlay virtual network.

Overlay network movement operations

Radio-assisted tamper protection in a HSM electronic device. Radio signals received from one or more network elements on a network are used for determining values of a set of network parameters that identify the electronic device in a predefined state. A tamper detection state signal may be generated responsive to the detected tampering state. The electronic device may be inhibited from operation in response to the tamper detection state signal.

Radio-assisted tamper protection of hardware

The present invention is notably directed to methods, systems and computer program products for securing data operations in a computerized system comprising interconnected nodes, wherein the nodes are configured to transmit, receive and store data, and wherein the method comprises executing computerized cryptographic methods to implement two or more proofs of work that comprises: provably crawling, from each node of at least a subset of the interconnected nodes, a respective subset of data stored on nodes of the system; and provably acquiring, at each node of the subset, data in the subset of data.

Cryptographic methods implementing proofs of work in systems of interconnected nodes

A method includes associating overlay network attributes (ONAs) with virtual networks. A movement operation is performed that includes re-assigning the virtual networks to servers of overlay networks based on management of the ONAs.

Congestion management for data traffic in a virtual domain identifies a congestion source and sends a message to the source to adjust data traffic rates. The source may be a virtual machine hosted by a physical server with one or more virtual servers incorporated. A congestion manager may identify the source and send the message to the source without affecting other data sources hosted by the physical server or the virtual servers. In some embodiments, information about the congestion source may be encapsulated in a packet payload readable only by the congestion source so only the congestion source receives the instruction to adjust the transmission rate.

Virtual quantized congestion notification

Embodiments relate to controlling workload flow on converged Ethernet links. An aspect includes coupling, by a processing device, a first control loop to a second control loop. The second control loop monitors the operation of the first control loop. An equilibrium set point is initialized for the second control loop prior to commencing operation of the first control loop. Accordingly, the equilibrium set point value is adjusted in the second control loop continuously based on a rate of operation of the first control loop.

Adaptive setting of the quantized congestion notification equilibrium setpoint in converged enhanced ethernet networks

In one embodiment, a method includes receiving first overlay network traffic via a first input overlay tunnel at a multi-protocol virtual tunnel end point (VTEP) implemented in an accelerated network interface card (NIC) of a server. The method also includes routing the first overlay network traffic to a second overlay network tunnel which adheres to a second overlay network protocol in response to a determination that a destination of the first overlay network traffic is specified as the second overlay network tunnel. Moreover, the method includes receiving second overlay network traffic via the first input overlay tunnel at the multi-protocol VTEP. The method also includes bridging the second overlay network traffic to a first destination overlay network tunnel terminated at the multi-protocol VTEP in response to a determination that a destination of the second overlay network traffic is specified as the first destination overlay network tunnel.

Heterogeneous overlay network translation for domain unification

Adaptive setting of the quantized congestion notification equilibrium setpoint in converged enhanced Ethernet networks

In one embodiment, a method includes selecting a flow from a head of a first control queue or a second control queue. The method also includes providing service to the selected flow. Moreover, the method includes decreasing a service credit of the selected flow by an amount corresponding to an amount of service provided to the selected flow. In another embodiment, a computer program product includes a computer readable storage medium having program code embodied therewith. The embodied program code is readable/executable by a device to select, by the device, a flow from a head of a first control queue or a second control queue. The embodied program code is also readable/executable to provide, by the device, service to the selected flow, and decrease, by the device, a service credit of the selected flow by an amount corresponding to an amount of service provided to the selected flow.

Embodiments of the invention relate to providing virtual network domain movement operations for overlay networks. One embodiment includes a method that includes determining one or more overlay network attributes (ONAs) for a plurality of virtual networks. The one or more ONAs are associated with the virtual networks. The one or more ONAs are managed as one or more portable entities by one or more of creating ONAs, deleting ONAs, moving ONAs, combining ONAs and dividing ONAs. A movement operation is performed on the one or more virtual networks among one or more servers of one or more overlay networks based on the management of the one or more ONAs.

Growing community of inventors

Langnau am Albis, Switzerland

Mircea R Gusat