公开(公告)号：DE69024514D1

公开(公告)日：1996-02-15

申请号：DE69024514

申请日：1990-01-16

Applicant: IBM

Inventor： REYNOLDS FRANK STANLEY ,  RICCI LOUIS WILLIAM

IPC: G06F11/22 ,  G06F11/267 ,  G06F11/26

Abstract: An error injection tool for injecting errors into a computer channel wherein the error injection is under microcode control in the channel itself. Error injection may be random or precise, based upon inputted parameters. The injection can be either immediate or delayed, as desired. The resulting error injection may be layered such that an event may be set up to trigger a later error injection, with the layered error injection occurring in the true running environment of the channel. A time of day log may be constructed for timing the exact initiation and recovery time of an error.

公开(公告)号：CA2819159C

公开(公告)日：2020-04-14

申请号：CA2819159

申请日：2012-04-11

Applicant: IBM

Inventor： HATHORN ROGER ,  FLANAGAN JOHN ,  RICCI LOUIS WILLIAM ,  CARLSON SCOTT ,  KALOS MATTHEW JOSEPH ,  YUDENFRIEND HARRY ,  RIEDY DALE ,  CASPER DANIEL FRANCIS

IPC: G06F13/42

Abstract: A computer program product is provided for performing: sending, by a channel subsystem, a process login (PRLI) request message to the control unit that indicates whether the channel subsystem supports bi-directional data transfer; receiving a PRLI response message from the control unit that indicates whether the control unit supports bi-directional data transfer; gathering a plurality of commands, at least one which specifies an input data transfer and at least one specifying an output data transfer; sending at least one output data message to the control unit including output data to be transferred to the control unit, the output data message associated with the at least one of the plurality of commands specifying an output data transfer; and receiving at least one input message from the control unit including input data to be stored in a main storage of the host computer system.

公开(公告)号：GB2503638B

公开(公告)日：2015-01-07

申请号：GB201202181

申请日：2010-07-07

Applicant: IBM

Inventor： HATHORN ROGER ,  RICCI LOUIS WILLIAM ,  EISENHAUER DANIEL

IPC: H04L49/111

Abstract: Provided are a computer program product, system, and method for supporting non-delivery notification between a switch and device in a network. A login with a switch is initiated including a test service parameter requesting a non-delivery notification service to cause the switch to return a non-delivery notification in response to a test path request indicating a destination node that is unavailable. Indication is made that the test service is available for the login in response to receiving a reply from the switch that the switch accepts the login with the non-delivery notification service. The test path request is sent to the switch to determine whether the destination node is available. The non-delivery notification is received from the switch in response to the switch determining that the destination node to which the test path request is directed is unavailable.

公开(公告)号：GB2505380B

公开(公告)日：2014-12-17

申请号：GB201321835

申请日：2012-05-30

Applicant: IBM

Inventor： EISENHAUER DANIEL ,  HATHORN ROGER G ,  MAY HENRY JOSEPH ,  RICCI LOUIS WILLIAM

IPC: H04L45/02

Abstract: System and computer program product embodiments for fiber channel forwarder fabric login sequence in a fiber channel switch environment, where a Fiber Channel Forwarder (cFCF) is separated from a Fiber Channel over Ethernet (FCoE) data forwarder (FDF), are provided. In one embodiment, by way of example only, at a Fiber Channel Login (FLOGI) to a target device from an initiator device, a node address acceptance notification is held from reaching the initiator device until each of the zoning distributions have been considered to have been completed.

公开(公告)号：GB2505814A

公开(公告)日：2014-03-12

申请号：GB201321890

申请日：2012-05-03

Applicant: IBM

Inventor： FLANAGAN JOHN ,  RICCI LOUIS WILLIAM ,  CARLSON SCOTT ,  KALOS MATTHEW JOSEPH ,  YUDENFRIEND HARRY ,  RIEDY DALE ,  CASPER DANIEL FRANCIS ,  CANDELARIA SUSAN KAY ,  HATHORN ROGER

IPC: G06F13/12 ,  G06F13/38

Abstract: A computer program product is configured for performing a method including: receiving at least one command message specifying an I/O operation at a control unit from a channel subsystem, the at least one command message including one or more device command words (DCWs) having a data count and a suppress-length indication (SLI), the SLI configured to instruct the control unit whether to continue to perform the I/O operation in response to the control unit detecting an incorrect length condition; processing at least one of the one or more DCWs; and returning a transport response message including an incorrect length (IL) value, the IL value being a first IL value in response to the SLI being a first SLI value and the data count not matching the amount of data required, the IL value being a second IL value in response to the SLI being a second SLI value and the data count not matching the amount of data required.

公开(公告)号：GB2504255A

公开(公告)日：2014-01-29

申请号：GB201119301

申请日：2010-07-22

Applicant: IBM

Inventor： HATHORN ROGER ,  EISENHAUER DANIEL ,  RICCI LOUIS WILLIAM

IPC: H04L12/46 ,  H04L45/28

Abstract: An apparatus, system, and method are disclosed for establishing a point-to-point connection using Fibre Channel over Ethernet (FCoE). The point-to-point connection is established as part of the FCoE Initialization Protocol (FIP). A first computing device sends a FIP discovery solicitation to a predefined address such as ALL-FCF-MACs. The first computing device also listens to the local ALL-FCF-MACs address and determines whether or not there are any switches in the fabric connecting the first computing device and the second computing device. If there are no switches, the first computing device sends a second FIP discovery solicitation with a point-to-point indicator. If the first computing device receives a similar FIP discovery solicitation from the second computing device, it sends a FIP discovery advertisement with the point-to-point indicator. The first computing device and second computing device then perform fabric login and establish a point to point connection.

公开(公告)号：GB2503638A

公开(公告)日：2014-01-08

申请号：GB201202181

申请日：2010-07-07

Applicant: IBM

Inventor： HATHORN ROGER ,  RICCI LOUIS WILLIAM ,  EISENHAUER DANIEL

IPC: H04L49/111

Abstract: Provided are a computer program product, system, and method for supporting non-delivery notification between a switch and device in a network. A login with a switch is initiated including a test service parameter requesting a non-delivery notification service to cause the switch to return a non-delivery notification in response to a test path request indicating a destination node that is unavailable. Indication is made that the test service is available for the login in response to receiving a reply from the switch that the switch accepts the login with the non-delivery notification service. The test path request is sent to the switch to determine whether the destination node is available in response to determining that the non-delivery notification service is available for the switch login. The non-delivery notification is received from the switch in response to the switch determining that the destination node to which the test path request is directed is unavailable.