International Business Machines Corporation

Lenovo (singapore) Pte. Ltd.

Randall Scott Nelson

Eric G Thiemann

Josep Cors

Kyle Alan Lucke

Alan M Bentley

Michael Anthony Migliacio

Mark Harrison Goff

Jesse Paul Arroyo

Andrew Thomas Tauferner

Andrew T Koch

Jonathan Louis Kaus

Lee Hardy Wilson

Robert John Donovan

Christopher A Peterson

David Lee Dosch

Mark Edward Fisher

Timothy W Gee

Yosef Bitton

Brian E Jongekryg

Taylor L Schreck

James W Sylivant

Scott J Timmerman

Russel Roy Garvey

Tokunbo Adeshiyan

Joseph C Lindsay

Darrel W Raknerud

Judith Trousdell

John C Wingertsman, Iii

Larry S Shannon, Jr

Ray A Luechtefeld

Andrew W Wojtowicz

Thanh T Nguyen

Eric Gene Thiemann

Michael Anthony c/o Ibm Uk Lim Migliacio

A method and apparatus for establishing multiple network sessions over an arbitrary network topology comprises receiving network configuration information describing an initiator system and a target controller. The initiator system contains one or more initiator ports. The target controller contains one or more target ports. Each target port is associated with one or more target nodes. A set of pre-defined rules is identified. The set of pre-defined rules governs the establishment of network sessions between the initiator ports and the target nodes through the target ports. One or more network sessions are established based on the set of pre-defined rules and the network configuration information.

Automatic multipath iSCSI session establishment over an arbitrary network topology

A method, system, and computer-readable storage media for granting a device access to a managed group are disclosed. Identification information may be exchanged between a management device in the managed group and a managed device through a secure first channel. If the identification information is verified by the management device, the managed device may be granted access to the managed group through the secure first channel. If access is granted, the managed device may access the managed group through a secure communication session on a network. If the identification information is not verified, the management device may send a cryptographic key to the managed device through the secure first channel. The cryptographic key may be used to create an encrypted communication session between the managed device and management device over the network.

Trusted system network

An apparatus, program product and method dynamically select a physical network interface for use by an application running on a networked computer in a manner that attempts to minimize bandwidth contention between application-related operations and any operating system critical storage operations that may be initiated by an operating system resident on the same networked computer. The dynamic selection prioritizes at least one physical network interface that does not handle operating system critical storage operations over at least one physical network interface that does handle operating system critical storage operations, thus minimizing the likelihood of the application causing poor performance and/or failure of the operating system due to contention over limited network resources.

Physical network interface selection to minimize contention with operating system critical storage operations

Apparatus and methods of assigning a physical adapter local to a computer to a virtual adapter in a computer through which the virtual adapter may receive and transmit data is provided. The apparatus and methods may include (1) providing a system including a plurality of computers coupled via a network, wherein a first computer of the plurality of computers includes a plurality of physical adapters and at least one virtual adapter; (2) for each virtual adapter in the first computer, assigning a rank to each physical adapter in the first computer; and (3) based on the ranks, testing one or more of the physical adapters in the first computer for connectivity to a physical adapter in a second computer with which a first virtual adapter is likely to communicate. Connectivity tests are started in a staggered manner that favors highly ranked physical adapters. Numerous other aspects are provided.

Methods and apparatus for assigning a physical adapter to a virtual adapter

The present invention relates to a method for the safe shut down of an operating system. The invention utilizes a shutdown-monitoring program that is running in an initiator operating system to periodically transmit and pass-through SCSI command to a SCSI target to determine if a shutdown operations is to be performed upon the operating system. In response to the SCSI command the SCSI target returns data back to the initiator operating system, wherein the shutdown-monitoring program analyzes the data. In the event that the shutdown-monitoring program determines that the operating system is to be shut down, then an operating system shutdown is initiated using at least one appropriate API that is provided by the operating system.

Method for a SCSI target controller to safely shut down an operating system by the use of a standard SCSI initiator command

A computer system, program product and method enhances the operation of a communications protocol by monitoring timers associated with the protocol to determine the transmission requirements placed on a transmit queue. The number of frames to be enqueued at a particular system tick is dynamically modified to prevent queue overload. In one embodiment the expiration of timers is adjusted to prevent queue overload. In another embodiment, frame transmission at timer expiry is adjusted to prevent queue overload.

Computer system, program product and method for dynamically optimizing a

The invention relates to a wide area network implemented on a circuit-switched public data network. Terminals have access to a plurality of data channels and a control channel into the network using a balanced protocol. The invention provides a method for reducing connect time between the terminals over the data channels. To do this a conversation is established between a transaction program on the local terminal and a transaction program on the remote terminal. Responsive to generation of a frame for transmission by the transaction program on the local terminal to the transaction program on the remote terminal, a channel connection between the local terminal and a remote terminal including a data channel connecting each terminal into the wide area network is established if no channel connection already exists. Responsive to expiration of a predetermined period after last transmission or receipt of a frame and existence of the channel connection for a minimum connect period, the channel connection is disestablished without interrupting the conversation between the transaction programs. The predetermined period and the minimum connect period are optimized to minimize costs under a tariff structure for the circuit-switched public data network.

Switched circuit connection management over public data networks for

ISDN power source detection circuit

Growing community of inventors

Rochester, MN, United States of America

Randall Scott Nelson