US 2021/0243071 A1Published application

Control system and control method

AssigneeHitachi, Ltd.

InventorsHidehiro KAWAI, Hideki OSONOI, Hidenori OMIYA

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Abstract

A route failure and a device failure are detected in a short time without erroneous recognition. A multiplexing system includes: a first system having a pair of processing devices forming a pair; a second system having a pair of processing devices forming a pair that are different from the first system; each processing device of the first system and the second system includes a survival monitoring unit configured to monitor a failure of the each processing device or the each LAN based on a device time-out for confirming survival of the each processing device and a route time-out for confirming survival of the each LAN set to be longer than the device time-out.

Claims8

Dependent claims

A control system of a multiplexing system,

the multiplexing system including:
a first system having a pair of processing devices forming a pair;
a second system having a pair of processing devices forming a pair that are different from the first system;
a first inter-pair LAN directly connecting the pair of processing devices of the first system;
a second inter-pair LAN directly connecting the pair of processing devices of the second system;
a first inter-system LAN directly connecting one processing device of the pair of processing devices of the first system and one processing device of the pair of processing devices of the second system;
a second inter-system LAN directly connecting another processing device of the pair of processing devices of the first system and another processing device of the pair of processing devices of the second system;
an internal LAN connected to receive a processing result from a computing node provided on an internal side of the multiplexing system and perform a predetermined processing and connecting each pair of processing devices of the first system and the second system;
and
an external LAN connected to transmit the processing result from the computing node to a predetermined terminal provided on an external side of the multiplexing system and connecting each pair of processing devices of the first system and the second system, wherein
each processing device of the first system and the second system includes a survival monitoring unit configured to monitor a failure of the each processing device or the each LAN based on a device time-out for confirming survival of the each processing device and a route time-out for confirming survival of the each LAN set to be longer than the device time-out.

8 more elements

A control method performed in a control system of a multiplexing system, the control method comprising:

in each processing device of a first system having a pair of processing devices forming a pair and a second system having a pair of processing devices forming a pair that are different from the first system in the multiplexing system,
monitoring, by a survival monitoring unit, a failure of the each processing device or a LAN based on a device time-out for confirming survival of the each processing device and a route time-out for confirming survival of the each LAN set to be longer than the device time-out via any one of a first inter-pair LAN directly connecting the pair of processing devices of the first system, a second inter-pair LAN directly connecting the pair of processing devices of the second system, a first inter-system LAN directly connecting one processing device of the pair of processing devices of the first system and one processing device of the pair of processing devices of the second system, a second inter-system LAN directly connecting another processing device of the pair of processing devices of the first system and another processing device of the pair of processing devices of the second system, an internal LAN connected to receive a processing result from a computing node provided on an internal side of the multiplexing system and perform a predetermined processing and connecting each pair of processing devices of the first system and the second system, and an external LAN connected to transmit the processing result from the computing node to a predetermined terminal provided on an external side of the multiplexing system and connecting each pair of processing devices of the first system and the second system.

Dependencies are inferred from the claim text.

Facts

Application: 17/137,091Filed 29 Dec 2020
Priority: JP 2020-01424331 Jan 2020
Published: 5 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04L 43/0817
By checking availability: by checking functioning
H04L 12/40176
Flexible bus arrangements: involving redundancy
H04L 12/462
LAN interconnection over a backbone network, e.g. Internet, Frame Relay: lAN interconnection over a bridge based backbone
H04L 41/0631
Management of faults, events, alarms or notifications: using root cause analysis; using analysis of correlation between notifications, alarms or…

Family

US 11,349,705 B2Related patent
US 2021/0243071 A1This patent

From the US filing history. Foreign family members aren’t listed.

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