Handling errors in an error-tolerant distributed computer system
First Claim
1. Method of dealing with faults in a fault-tolerant distributed computer system with a plurality of node computers (K1 . . . K4) which are connected by means of communication channels (c11 . . . c42) and each node computer has an autonomous communication control unit (CON) wherein access to the communication channels takes place according to a cyclic time slicing method and the correctness of messages leaving the node computers is checked by guardians (GUA) and characterised in that the independently formed guardians (GUA) convert a message burdened with an SOS (“
- slightly off specifications”
) fault either into a correct message or into a message which can be recognised by all receiving node computers (K1 . . . K4) as clearly incorrect.
2 Assignments
0 Petitions
Accused Products
Abstract
Method of dealing with faults in a fault-tolerant distributed computer system, as well as such a system, with a plurality of node computers (K1 . . . K4) which are connected by means of communication channels (c11 . . . c42) and access to the channels takes place according to a cyclic time slicing method. Messages leaving node computers (K1 . . . K4) are checked by independently formed guardians (GUA) which convert a message burdened with an SOS (“slightly off specification”) fault either into a correct message or into a message which can be recognised by all node computers as clearly incorrect.
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Citations
11 Claims
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1. Method of dealing with faults in a fault-tolerant distributed computer system with a plurality of node computers (K1 . . . K4) which are connected by means of communication channels (c11 . . . c42) and each node computer has an autonomous communication control unit (CON) wherein access to the communication channels takes place according to a cyclic time slicing method and the correctness of messages leaving the node computers is checked by guardians (GUA) and characterised in that the independently formed guardians (GUA) convert a message burdened with an SOS (“
- slightly off specifications”
) fault either into a correct message or into a message which can be recognised by all receiving node computers (K1 . . . K4) as clearly incorrect. - View Dependent Claims (2, 3, 4, 5, 8)
- slightly off specifications”
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6. Fault-tolerant distributed computer system with a plurality of node computers (K1 . . . K4) which are connected to each other by at least one distributor unit (V1, V2) and communication channels (c11 . . . c42), each node computer has an autonomous communication control unit (CON), access to the communication channels takes place according to a cyclic time slicing method and guardians (GUA) are provided for the purpose of checking the messages leaving the node computers characterised in that the independently formed guardians (GUA) are adapted to convert a message burdened with an SOS (“
- slightly off specifications”
) fault either into a correct message or into a message which can be recognised by all receiving node computers (K1 . . . K4) as clearly incorrect. - View Dependent Claims (7, 9, 10, 11)
- slightly off specifications”
Specification