公开(公告)号：AU2003214470A8

公开(公告)日：2003-11-10

申请号：AU2003214470

申请日：2003-04-01

Applicant: IBM

Inventor： BEUKEMA BRUCE LEROY ,  NEAL DANNY MARVIN ,  RECIO RENATO JOHN ,  GREGG THOMAS ANTHONY

IPC: G06F9/54 ,  H04L12/28 ,  H04L12/56 ,  H04L29/06 ,  H04L29/08 ,  G06F13/42 ,  G06F15/17 ,  G06F13/12 ,  G06F13/40

Abstract: A method, system, and product in a data processing system are disclosed for managing data transmitted from a first end node to a second end node included in the data processing system. A logical connection is established between the first end node and the second end node prior to transmitting data between the end nodes. An instance number is associated with this particular logical connection. The instance number is included in each packet transmitted between the end nodes while this logical connection remains established. The instance number remains constant during this logical connection. The instance number is altered, such as by incrementing it, each time a logical connection between these end nodes is reestablished. Thus, each packet is associated with a particular instance of the logical connection. When a packet is received, the instance number included in the packet may be used to determine whether the packet is a stale packet transmitted during a previous logical connection between these end nodes.

公开(公告)号：DE69029189D1

公开(公告)日：1997-01-02

申请号：DE69029189

申请日：1990-08-17

Applicant: IBM

Inventor： GREGG THOMAS ANTHONY ,  SKARSHINSKI LEON

IPC: H04L7/00 ,  H04L7/08 ,  H04L25/49 ,  H04L29/08

Abstract: An apparatus and method for transmitting commands over a serial link having a switch (10) intermediate a channel and a control unit wherein continuous sequences of idle characters (K.28.5) are sent over the link for maintaining character synchronization. Commands and response information is sent between ports (P) of the switch and the channel (22, 24) and/or the control unit (26, 29) by modifying every other idle character to a modified idle character to which a command or response function has been assigned. In the modification, a selected number of the bits of the idle character are held invariant, and only those bits are varied which form data characters according to the rules of the 8B/10B encoding method. Code points for a total of 124 modified idle characters are disclosed to which a separate command or response may be assigned.

公开(公告)号：DE69022359T2

公开(公告)日：1996-03-28

申请号：DE69022359

申请日：1990-10-10

Applicant: IBM

Inventor： CASPER DANIEL FRANCIS ,  FLANAGAN JOHN RICHARD ,  GREGG THOMAS ANTHONY ,  HUANG CATHERINE CHE-WEN ,  KALOS MATTHEW JOSEPH

IPC: H04J3/06 ,  H04L7/00 ,  H04L7/02 ,  H04L7/04 ,  H04L7/08

公开(公告)号：DE3784182D1

公开(公告)日：1993-03-25

申请号：DE3784182

申请日：1987-03-27

Applicant: IBM

Inventor： CALTA SALVATORE ANTHONY ,  GREGG THOMAS ANTHONY ,  SKARSHINSKI LEON ,  STRANGWAYES RICHARD

IPC: G06F13/00 ,  G06F13/12 ,  G06F13/28 ,  G06F13/42