Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2005-04-12
2005-04-12
Beausoliel, Robert (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S043000, C714S011000, C709S224000
Reexamination Certificate
active
06880100
ABSTRACT:
This inventions discloses a fault or abnormal status detection mechanism applied to distributed networks considering a shared media. A set of programmed routines executing in every node connected to a distributed network establish pairs of inter-monitoring nodes. At system power up, every node searches for another free, unpaired node using random timeout messaging generation to prevent collisions of network messages. After all pairs have been formed, a periodic check message is sent from one node to its associated partner (and vice versa) requesting its operating status. A response, containing a node's status, is generated upon receipt of a check message. If an abnormal status is received, or there is no response, a report is sent to a monitoring station or stored as a failure network event. The timeout period, in the order of seconds, between each check message is adjusted according to the number of connected nodes and available network bandwidth. This prevents excessive traffic generation that could affect performance. A longer timeout period, in the order of minutes, indicates when to restart the pair assignation process again, periodically changing all established pairs.
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Mora Oscar
Pinate Roger
Ponticelli Roberto
Beausoliel Robert
Furr, Esq. Jeffrey
Smartmatic Corp.
Wilson Yolanda L
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