Communication device that performs automatic failure recovery and automatic failure recovery method
AssigneeNEC Corporation
InventorTatsuya Shiragaki
Life of this patent
Estimating the term…
Abstract
If failure is detected in multiple layers, a failure detection recovery processing unit is activated simultaneously in each layer and performs operations up to immediately before switching a main signal. The first layer to reach that stage notifies the other layer of this fact through inter-layer failure recovery information communication terminal and processing units to stop the failure recovery operation of the other layer. The other layer sends back a response to it through the inter-layer failure recovery information communication terminal and processing units, and the layer that first reaches the stage up to immediately before actually switches the main signal based on the result of the response.
Claims32
A communication device having a failure recovery function for multiple layers, comprising:
- failure detection and recovery processing means for processing failure detection and failure recovery of each layer;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between multiple layers,
- said failure detection recovery processing means of each layer being activated when a failure is detected in multiple layers,
- operations being performed up to immediately before switching a main signal, the first layer to reach the stage immediately before notifying the other layer of this fact through said failure recovery information processing means to stop the failure recovery operation of the other layer,
- the other layer sending back an authorization response through said failure recovery information means, and the first layer to reach the stage immediately before actually switching the main signal based on the response result.
A communication device having a failure recovery function in a network consisting of multiple layers,
- each communication device consisting of;
- failure detection and recovery processing means for processing failure detection and failure recovery of each layer;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between layers in which a failure is recovered by the other communication device,
- said failure detection processing means of each communication device being activated when a failure is detected in multiple layers,
- operations being performed up to immediately before switching a main signal, the first layer to reach the stage immediately before notifying the communication device of the other layer of this fact through said failure recovery information processing means to stop the failure recovery operation of the other layer,
- the communication device of the other layer sending back an authorization response through said failure recovery information means, and the first layer to reach the stage immediately before actually switching the main signal based on the response result.
An automatic failure recovery method of a communication network having a failure recovery function for multiple layers, comprising the steps of:
- when a failure is detected in the multiple layers,
- starting each failure recovery operation in the multiple layers;
- and
- completing the failure recovery operation only in the layer that ended the failure recovery operation in advance.
An automatic failure recovery method of a communication network having a failure recovery function for multiple layers, comprising the steps of:
- when a failure is detected in the multiple layers,
- starting the failure recovery operation only in a specific layer having priority, and
- starting the failure recovery operation in the other layer, by recognizing that the specific layer having priority failed in the failure recovery operation, when the other layer recognized the failure recovery request the other layer was notified of.
An automatic failure recovery method of a communication network having a failure recovery function for multiple layers, comprising the steps of:
- when a failure is detected in the multiple layers,
- starting the failure recovery operation only in a specific layer having priority, and
- starting the failure recovery operation in the other layer when the time since the failure was detected in the other layer exceeds a preset time.
An automatic failure recovery method of a communication network having a failure recovery function for multiple layers, comprising the steps of:
- when a failure is detected in the multiple layers,
- starting the failure recovery operation only in a specific layer having priority, and
- starting the failure recovery operation in the other layer, by recognizing that the specific layer having priority failed in the failure recovery operation, when the other layer recognized the failure recovery request the other layer was notified of, or when the time since the failure was detected in the other layer exceeds a preset time.
A communication device having a failure recovery function of multiple failure recovery areas on a network, comprising:
- failure detection recovery processing means for processing the failure detection and failure recovery of each failure recovery area;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between multiple failure recovery areas,
- said failure detection recovery processing means in each failure recovery area being activated when failure is detected in the multiple failure recovery areas to perform operations up to immediately before switching a main signal,
- the first failure recovery area to reach a stage immediately before notifying the other failure recovery area of this fact through said failure recovery information processing means to stop the failure recovery operation of the other failure recovery area,
- the other failure recovery area sending back an authorization response through said failure recovery information means, and the first failure recovery area to reach the stage immediately before actually switching the main signal based on the response result.
A communication device having a failure recovery function in a network having multiple failure recovery areas, comprising:
- each communication device consisting of;
- failure detection recovery processing means for processing the failure detection and failure recovery of each failure recovery area;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between failure recovery areas in which a failure is recovered by the other communication device,
- said failure detection recovery processing means in each communication device being activated when failure is detected in the multiple failure recovery areas to perform operations up to immediately before switching a main signal,
- the first failure recovery area to reach a stage immediately before notifying the communication device of the other failure recovery area of this fact through said failure recovery information processing means to stop the failure recovery operation of the communication device of the other failure recovery area,
- the communication device of the other failure recovery area sending back an authorization response through said failure recovery information processing means, and the first failure recovery area to reach the stage immediately before actually switching the main signal based on the response result.
An automatic failure recovery method of a communication network having a failure recovery function for multiple failure recovery areas, comprising the steps of:
- when a failure is detected in the multiple failure recovery areas,
- starting each failure recovery operation in the multiple failure recovery areas;
- and
- completing the failure recovery operation only in the failure recovery area that ended the failure recovery operation in advance.
An automatic failure recovery method of a communication network having a failure recovery function of multiple failure recovery areas, comprising the steps of:
- when a failure is detected in the multiple failure recovery areas,
- starting the failure recovery operation only in a specific failure recovery area having priority, and
- starting the failure recovery operation in the other failure recovery area, by recognizing that the specific failure recovery area having priority failed in the failure recovery operation, when the other failure recovery area recognized the failure recovery request the other failure recovery area was notified of.
An automatic failure recovery method of a communication network having a failure recovery function of multiple failure recovery areas, comprising the steps of:
- when a failure is detected in the multiple failure recovery areas,
- starting the failure recovery operation only in a specific failure recovery area having priority, and
- starting the failure recovery operation in the other failure recovery area when the time since the failure was detected in the other failure recovery area exceeds a preset time.
An automatic failure recovery method of a communication network having a failure recovery function of multiple failure recovery areas, comprising the steps of:
- when a failure is detected in the multiple failure recovery areas,
- starting the failure recovery operation only in a specific failure recovery area having priority, and
- starting the failure recovery operation in the other failure recovery area, by recognizing that the specific failure recovery area having priority failed in the failure recovery operation, when the other failure recovery area recognized the failure recovery request the other failure recovery area was notified of, or when the time since the failure was detected in the other failure recovery area exceeds a preset time.
A communication network system in which a communication device having a failure recovery function of multiple layers is placed as a node,
- said communication device comprising;
- failure detection recovery processing means for processing failure detection and failure recovery of each layer;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between the multiple layers,
- said failure detection recovery processing means in each layer being activated when failure is detected in the multiple layers to perform operations up to immediately before switching a main signal,
- the first layer to reach a stage immediately before notifying the other layer of this fact through said failure recovery information processing means to stop the failure recovery operation of the other layer,
- the other layer sending back an authorization response through said failure recovery information processing means, and the first layer to reach the stage immediately before actually switching the main signal based on the response result.
A communication network system placed as a communication device node having a failure recovery function in a network consisting of multiple layers,
- each communication device consisting of;
- failure detection recovery processing means for processing failure detection and failure recovery of each layer;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between layers in which a failure is recovered by the other communication device,
- said failure detection recovery processing means in each communication device being activated when failure is detected in the multiple layers to perform operations up to immediately before switching a main signal,
- the first layer to reach a stage immediately before notifying the communication device of the other layer of this fact through said failure recovery information processing means to stop the failure recovery operation of the other layer,
- the communication device of the other layer sending back an authorization response through said failure recovery information means, and the first layer to reach the stage immediately before actually switching the main signal based on the response result.
A communication network system that has a communication device having a failure recovery function of multiple failure recovery areas on a network,
- said communication device comprising;
- failure detection recovery processing means for processing the failure detection and failure recovery of each failure recovery area;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between the multiple failure recovery areas,
- said failure detection recovery processing means in each failure recovery area being activated when failure is detected in the multiple failure recovery areas to perform operations up to immediately before switching a main signal,
- the first failure recovery area to reach a stage immediately before notifying the other failure recovery area of this fact through said failure recovery information processing means to stop the failure recovery operation of the other failure recovery area,
- the other failure recovery area sending back an authorization response through said failure recovery information means, and the first failure recovery area to reach the stage immediately before actually switching the main signal based on the response result.
A communication network system that has a communication device having a failure recovery function on a network having multiple failure recovery areas,
- each communication device comprising;
- failure detection recovery processing means for processing the failure detection and failure recovery of each failure recovery area;
- and
- failure recovery information processing means for performing communication terminal and information processing of failure recovery information between failure recovery areas in which a failure is recovered by the other communication device,
- said failure detection recovery processing means in each communication device being activated when failure is detected in the multiple failure recovery areas to perform operations up to immediately before switching a main signal,
- the first failure recovery area to reach a stage immediately before notifying the communication device of the other failure recovery area of this fact through said failure recovery information processing means to stop the failure recovery operation of the communication device of the other failure recovery area,
- the communication device of the other failure recovery area sending back an authorization response through said failure recovery information processing means, and the first failure recovery area to reach the stage immediately before actually switching the main signal based on the response result.
An automatic failure recovery program controlling a communication device on a communication network having a failure recovery function for multiple layers to perform failure recovery processing, comprising the functions of:
- a function starting each failure recovery operation in the multiple layers when failure is detected in the multiple layers;
- and
- a function completing the failure recovery operation only in the layer that ended the failure recover operation in advance.
An automatic failure recovery program controlling a communication device on a communication network having a failure recovery function for multiple layers to perform failure recovery processing, comprising the functions of:
- a function starting only the failure recovery operation in the specific layer having priority when failure is detected in the multiple layers;
- and
- a function starting the failure recovery operation in the other layer, by recognizing that the specific layer having priority failed in the failure recovery operation, when the other layer recognized the failure recovery request the other layer was notified of.
An automatic failure recovery program controlling a communication device on a communication network having a failure recovery function for multiple layers to perform failure recovery processing, comprising the functions of:
- a function starting only the failure recovery operation in the specific layer having priority when failure is detected in the multiple layers;
- and
- a function starting the failure recovery operation in the other layer when the time since the failure was detected in the other layer exceeds a preset time.
An automatic failure recovery program controlling a communication device on a communication network having a failure recovery function for multiple layers to perform failure recovery processing, comprising the functions of:
- a function starting only the failure recovery operation in the specific layer having priority when failure is detected in the multiple layers;
- and
- a function starting the failure recovery operation in the other layer, by recognizing that the specific layer having priority failed in the failure recovery operation, when the other layer recognized the failure recovery request the other layer was notified of, or when the time since the failure was detected in the other layer exceeds a preset time.
Dependencies are inferred from the claim text.