公开(公告)号：AT293864T

公开(公告)日：2005-05-15

申请号：AT02712095

申请日：2002-02-20

Applicant: IBM

Inventor： CALVIGNAC JEAN LOUIS ,  HEDDES MARCO ,  PARK WINCHESTER ,  LOGAN JOSEPH FRANKLIN ,  VERPLANKEN FABRICE JEAN

IPC: H04L12/861 ,  H04L29/06 ,  H04L12/56

Abstract: A method and system for reducing the number of accesses to memory to obtain the desired field information in frame control blocks. In one embodiment of the present invention, a system comprises a processor configured to process frames of data. The processor may comprise a data flow unit configured to receive and transmit frames of data, where each frame of data may have an associated frame control block. Each frame control block comprises a first and a second control block. The processor may further comprise a first memory coupled to the data flow unit configured to store field information for the first control block. The processor may further comprise a scheduler coupled to the data flow unit where the scheduler is configured to schedule frames of data received by data flow unit. The scheduler may comprise a second memory configured to store field information for the second control block.

公开(公告)号：AT303691T

公开(公告)日：2005-09-15

申请号：AT02770125

申请日：2002-10-28

Applicant: IBM

Inventor： BROWN DEANNA LYNN QUIGG ,  PARK WINCHESTER ,  FERNANDES LILIAN SYLVIA ,  HURSLEY PARK WINCHESTER ,  JAIN VINIT ,  VALLABHANENI VASU

IPC: G06F15/00 ,  H04L12/24 ,  H04L12/66

Abstract: A data processing network and system in which a network connection is enabled to migrate among a multitude of available servers and/or clients to provide the connection using the most efficient available set of resources. Typically a server and client would indicate their respective support of this connection migration feature when the connection is established. An operating system or application program would monitor existing connections for characteristics including basic functionality and performance. If an existing connection were found to be faulty or low performing and the client and sever associated with the connection supported connection migration, the software would then determine if an alternative and more effective connection existed. Upon discovering such a connection, the parameters that define the connection would be altered to migrate the connection to the preferred hardware. In an embodiment in which the network connections are established with a transmission control protocol (TCP), each connection includes a four-tuple that completely defines the connection, namely, a source IP address, a source port number, a destination IP address, and a destination port number. By altering one or more of the connection's defining four-tuple, the invention is configured to migrate the connection to a NIC or system that is functioning more efficiently.