Title:
PRESERVING LOOP FAIRNESS WITH DYNAMIC HALF-DUPLEX
Document Type and Number:
WIPO Patent Application WO1999043002
Kind Code:
A3
Abstract:
A method and apparatus for preserving loop fairness. Some embodiments include a dynamic half-duplex feature. One aspect includes a communications channel system and method for preserving loop fairness that includes a first channel node having one or more ports, each port supporting and attached to a fibre-channel arbitrated-loop serial communications channel. One of the ports will arbitrate for control of that port's attached channel, wherein control of the channel loop, once arbitration is won, a fairness-preserving apparatus causes control of the communications channel to be released based at least in part on whether a predetermined amount of use has occurred between the first port and the communications channel. In some embodiments, the predetermined amount of use includes a transfer of a first predetermined amount of data. In some embodiments, release of control of the channel is inhibited if less than a second predetermined amount of data remains to be transferred.
Inventors:
MILLER MICHAEL H
WESTBY JUDY LYNN
WESTBY JUDY LYNN
Application Number:
PCT/US1999/003955
Publication Date:
October 28, 1999
Filing Date:
February 24, 1999
Export Citation:
Assignee:
SEAGATE TECHNOLOGY (US)
International Classes:
H04J3/02; H04L12/433; H04L12/56; (IPC1-7): H04J3/02
Foreign References:
| US5638518A | 1997-06-10 | |||
| US5598541A | 1997-01-28 | |||
| US5831985A | 1998-11-03 |
Download PDF: