Patent ID: 6243830
Filing Date: 2001-06-05
Classification: H04L

Abstract:
A method of managing state information of a communications system having a bus to which a plurality of communication units are connected, said plurality of communication units including a designated collecting unit and a plurality of interconnected reporting units, said method comprising:monitoring, within each reporting unit, state information of a respective reporting unit and when a change of state information occurs, overwriting previous state information stored in a memory portion of each respective reporting unit with current state information;transmitting a single recovery command from the collecting unit to a first one of said plurality of reporting units;within said first reporting unit, adding respective current state information to said recovery command and re-transmitting the recovery command with said added respective current state information to successive reporting units;within each successive reporting unit, cumulatively adding respective current state information to the recovery command received from a previous reporting unit and re-transmitting the recovery command with said added respective current state information to another successive reporting unit;in said collecting unit, receiving said recovery command having said cumulatively added current state information from a last one of said successive reporting units.