International Business Machines Corporation

Lenovo (singapore) Pte. Ltd.

Other

William Joseph Armstrong

Naresh Nayar

David R Engebretsen

Claude Basso

Josep Cors

Gregory Michael Nordstrom

Kyle Alan Lucke

Troy David Armstrong

Randal Craig Swanberg

John Michael Borkenhagen

Bruce Marshall Walk

Martin Joseph Crippen

Dhruv Manmohandas Desai

Philip Rogers Hillier, Iii

James Edward Hughes

Jeffrey James Lynch

Steven M Tri

James A O'Connor

William Gavin Holland

Michal Ostrowski

Colin Beaton Verrilli

Gary Ross Ricard

Chih-Jen Chang

Orran Yaakov Krieger

Balaram Sinharoy

Steven Mark Thurber

Cyriel Johan Minkenberg

Mircea R Gusat

David Anthony Larson

Kenneth Michael Valk

Curtis Shannon Eide

Curtis Carl Wollbrink

Michael Joseph Corrigan

Yu-Cheng Hsu

Adalberto Guillermo Yanes

David Alan Shedivy

Michael Howard Hartung

Scott Neil Dunham

Paul Edward Movall

Timothy Joseph Torzewski

Eric G Thiemann

Glenn Rowan Wightwick

Jeffrey Jay Scheel

Chris Francois

Renato John Recio

Michael Stephen Floyd

Charles Scott Graham

Daniel Gene Eisenhauer

Ronald Nick Kalla

Fredy Daniel Neeser

Kenneth Charles Vossen

Larry Scott Leitner

Bruce Gerard Mealey

Carlos Francisco Fuente

Richard Louis Arndt

Pravin S Patel

Richard Loise Arndt

Peter Joseph Heyrman

Cathy May

Theodore Brian Vojnovich

Henry Joseph May

Andrew T Koch

Bradley David McCredie

Christopher Francois

Kenneth M Walk

Naresh Nayer

Giles R Frazier

Vinit Jain

Michael Edward Factor

Christoph Raisch

Shmuel Ben-Yehuda

Stuart Zachary Jacobs

Scott Barnett Swaney

Mehul M Shah

Thomas R Sand

Nilanjan Mukherjee

Wade Byron Ouren

Alain Charles Azagury

Jacobo A Vargas

John Thomas O'Quin, Ii

Adam Charles Lange-Pearson

Ronald Ernest Freking

Richard Karl Kirkman

Amiram Hayardeny

James Walter Rymarczyk

Sandy K Kao

Lynn Allen McMahon

Tracy James Bashore

Eliezer Dekel

Christopher Patrick Abbey

Jay Paul Kurtz

Timothy R Marchini

Michael Brian Brutman

David Alan Bailey

Stephanie Maria Forsman

Mark Gregory Manges

Robert J Battista

Kevin Patrick Stamschror

William G Hollan

James A O'Connoor

A first logical partition in a first processing complex of a server cluster is operated in an active mode and a second logical partition in the processing complex is operated in a standby mode. Upon detection of a failure in a second processing complex of the server cluster. the standby mode logical partition in the first processing complex is activated to an active mode. In one embodiment, partition resources are transferred from an active mode logical partition to the logical partition activated from standby mode. Other embodiments are described and claimed.

Cluster availability management

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

A system and method performs packet analysis in a distributed communication network. Packet processors tap into data packet flow at various points in the distributed network. The packet processors processes data packets from the packet flow and select a set of packets using a packet signature function and packet selection criteria. A packet record is created by each packet processor and sent to other packet processors in the distributed network. The other packet processors add data to the packet record for the same set of packets. The packet records are analyzed to gather comparative data to identify problems in the network.

Problem detection in a distributed digital network through distributed packet analysis

A data handling system network includes a data handling system that is communicatively coupled to a switch by a network. The data handling system includes one or more logical partitions. Each logical partition includes a plurality of virtual switches and a plurality of virtual network interface cards. Each virtual network interface card is associated with a particular virtual switch and includes a plurality of QoS queues. The switch includes one or more switch partitions. Each switch partition includes a plurality of QoS queues that are associated with the QoS queues of the virtual network interface card. A packet is received with the virtual switch and the virtual switch sets and associates a QoS priority flag with the received packet. The virtual switch forwards the packet to a QoS queue comprised within the virtual network interface card based upon the QoS priority flag.

Quality of service in multi-tenant network

A method in a data processing system is provided for processing a service request of a client partition. The method includes: obtaining by a service partition of the data processing system the service request from the client partition, wherein both the client and service partitions execute above a hypervisor of the data processing system; and processing the service request by the service partition utilizing a processor quantum assigned to the client partition and donated by the client partition to the service partition. The client partition controls scheduling of the service partition by queuing the service request at the client partition until the client partition decides to proceed with execution of the service request by the service partition. In one implementation, the service partition is a partition adjunct of the data processing system, which utilizes donated virtual address space of the client partition.

Client partition scheduling and prioritization of service partition work

A network fabric may divide a physical connection into a plurality of VLANs as defined by IEEE 802.1Q. Moreover, many network fabrics use Priority Flow Control to identify and segregate network traffic based on different traffic classes or priorities. Current routing protocols define only eight traffic classes. In contrast, a network fabric may contain thousands of unique VLANs. When network congestion occurs, network devices (e.g., switches, bridges, routers, servers, etc.) can negotiate to pause the network traffic associated with one of the different traffic classes. Pausing the data packets associated with a single traffic class may also stop the data packets associated with thousands of VLANs. The embodiments disclosed herein permit a network fabric to individually pause VLANs rather than entire traffic classes.

Flexible and scalable data link layer flow control for network fabrics

Techniques are provided for packet routing in a distributed network switch. The distributed network switch includes multiple switch modules operatively connected to one another, and each switch module includes multiple bridge elements and a management controller. In one embodiment, a shared interface routing (SIR) framework is provided that includes an analysis and bifurcation layer, at least one packet interface, and an analysis assist layer. A packet is received over a first logical network and via a physical port, the packet being destined for at least a first application executing on the management controller. The analysis assist layer analyzes the packet to determine a reason code to assign to the packet. The analysis and bifurcation layer then analyzes the packet based at least in part on the reason code.

Packet routing with analysis assist for embedded applications sharing a single network interface over multiple virtual networks

A firmware update process for a self-virtualizing IO resource such as an SRIOV adapter is incorporated into a platform firmware update process to systematically update the resource firmware in a manner that is for the most part transparent to the logical partitions sharing the adapter. In particular, resource firmware associated with a self-virtualizing IO resource is bundled with firmware for at least one adjunct partition associated with that self-virtualizing IO resource within a common firmware image so that, upon restart of the adjunct partition to use the updated firmware image, the resource firmware is also updated, with a logical partition that uses the self-virtualizing IO resource maintained in an active state during the restart, and without requiring the self-virtualizing IO resource to be deconfigured from the logical partition.

Transparent update of adapter firmware for self-virtualizing input/output device

Techniques are provided for packet routing in a distributed network switch. The distributed network switch includes multiple switch modules operatively connected to one another, and each switch module includes multiple bridge elements and a management controller. In one embodiment, a shared interface routing (SIR) framework is provided that includes an analysis and bifurcation layer and at least one packet interface. A packet is received over a first logical network and via a physical port, the packet being destined for at least a first application executing on the management controller. The analysis and bifurcation layer analyzes the packet and sends the packet to the packet interface, which then routes the packet to the first application.

Packet routing for embedded applications sharing a single network interface over multiple virtual networks

Growing community of inventors

Rochester, MN, United States of America

William Joseph Armstrong