US 2019/0097905 A1Published application

Method and a device for generating report data related to an interface status

AssigneeCoriant Oy

InventorsVille HALLIVUORI, Mika SILVOLA, Mika LINDGREN, Jarkko VÄÄNÄNEN

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Abstract

Disclosed is a method and a device for generating report data related to a status of an interface of a network element are presented. The method includes: activating a delay timer when the interface status changes, setting delay-based data to express the interface status at the end of a delay determined by the delay-timer, setting dampening-based data to express the interface status if a penalty value fulfils a pre-determined condition and otherwise to express that the interface is non-utilizable, and setting the report data to express that the interface is utilizable if both the delay-based data and the dampening-based data express that the interface is utilizable. The penalty value is decreased with a dampening rule, and the penalty value is increased when the interface becomes non-utilizable and increasing the penalty value within a time-window is below a desired limit.

Claims16

Dependent claims

A device for generating report data related to a status of an interface of a network element, the report data being suitable for informing a control plane about the status of the interface so that flapping between utilizable and non-utilizable states of the interface is filtered out from the report data, the device comprising a delay timer and a processor system configured to:

receive status data having an on-value when the interface is utilizable and an off-value when the interface is non-utilizable,
initialize, in response to a situation which the status data is received for a first time, delay-based data to have a value of the status data and dampening-based data to have the value of the status data,
activate the delay timer in response to a situation in which the status data changes while the delay timer is inactive,
set, at an end of a delay determined by the delay timer, the delay-based data to have a value of the status data occurring at the end of the delay,
set, regardless of the delay timer, the dampening-based data to have the value of the status data if a penalty value fulfils a condition defined with one or more penalty thresholds, and otherwise set the dampening-based data to have the off-value,
set, regardless of the delay timer, the report data to have a value of the delay-based data if the dampening-based data has the on-value, and otherwise set the report data to have the off-value,
decrease, regardless of the delay timer and in response to a situation in which the penalty value is greater than zero, the penalty value in accordance with a predetermined rule over time,
set, regardless of the delay timer, penalty control data to have a preventive value in response to a situation in which increasing the penalty value during a time window exceeds a predetermined limit, the time-window including a current moment of time and having a pre-determined temporal length, and
increase, regardless of the delay timer, the penalty value in response to a situation in which i) the status data changes from the on-value to the off-value and ii) the penalty control data has a value other than the preventive value.

6 more elements

A network element for a data transfer network, the network element comprising:

interfaces for connecting to the data transfer network,
a processing system for running a control plane for configuring the network element to operate as a part of the data transfer network and for running a data plane for forwarding data, and
a device for generating report data so as to inform at least the control plane about a status of at least one of the interfaces of the network element, the report data being suitable for informing the control plane about the status of the at least one of the interfaces so that flapping between utilizable and non-utilizable states of the interface is filtered out from the report data,
wherein the device comprises a delay timer and a processor system configured to:
receive status data having an on-value when the interface is utilizable and an off-value when the interface is non-utilizable,
initialize, in response to a situation which the status data is received for a first time, delay-based data to have a value of the status data and dampening-based data to have the value of the status data,
activate the delay timer in response to a situation in which the status data changes while the delay timer is inactive,
set, at an end of a delay determined by the delay timer, the delay-based data to have a value of the status data occurring at the end of the delay,
set, regardless of the delay timer, the dampening-based data to have the value of the status data if a penalty value fulfils a condition defined with one or more penalty thresholds, and otherwise set the dampening-based data to have the off-value,
set, regardless of the delay timer, the report data to have a value of the delay-based data if the dampening-based data has the on-value, and otherwise set the report data to have the off-value,
decrease, regardless of the delay timer and in response to a situation in which the penalty value is greater than zero, the penalty value in accordance with a predetermined rule over time,
set, regardless of the delay timer, penalty control data to have a preventive value in response to a situation in which increasing the penalty value during a time window exceeds a predetermined limit, the time-window including a current moment of time and having a pre-determined temporal length, and
increase, regardless of the delay timer, the penalty value in response to a situation in which i) the status data changes from the on-value to the off-value and ii) the penalty control data has a value other than the preventive value.

10 more elements

A method for generating report data related to a status of an interface of a network element, the report data being suitable for informing a control plane about the status of the interface so that flapping between utilizable and non-utilizable states of the interface is filtered out from the report data, the method comprising:

receiving status data having an on-value when the interface is utilizable and an off-value when the interface is non-utilizable,
initializing, in response to a situation which the status data is received for a first time, delay-based data to have a value of the status data and dampening-based data to have the value of the status data,
activating a delay timer in response to a situation in which the status data changes while the delay timer is inactive,
setting, at an end of a delay determined by the delay timer, the delay-based data to have a value of the status data occurring at the end of the delay,
setting, regardless of the delay timer, the dampening-based data to have the value of the status data if a penalty value fulfils a condition defined with one or more penalty thresholds, and otherwise setting the dampening-based data to have the off-value,
setting, regardless of the delay timer, the report data to have a value of the delay-based data if the dampening-based data has the on-value, and otherwise setting the report data to have the off-value,
decreasing, regardless of the delay timer and in response to a situation in which the penalty value is greater than zero, the penalty value in accordance with a predetermined rule over time,
setting, regardless of the delay timer, penalty control data to have a preventive value in response to a situation in which increasing the penalty value during a time window exceeds a predetermined limit, the time-window including a current moment of time and having a pre-determined temporal length, and
increasing, regardless of the delay timer, the penalty value in response to a situation in which i) the status data changes from the on-value to the off-value and ii) the penalty control data has a value other than the preventive value.

6 more elements

A non-transitory computer readable medium encoded with a computer program for generating report data related to a status of an interface of a network element, the report data being suitable for informing a control plane about the status of the interface so that flapping between utilizable and non-utilizable states of the interface is filtered out from the report data, the computer program comprising computer executable instructions for controlling a programmable processor to:

receive status data having an on-value when the interface is utilizable and an off-value when the interface is non-utilizable,
initialize, in response to a situation which the status data is received for a first time, delay-based data to have a value of the status data and dampening-based data to have the value of the status data,
activate a delay timer in response to a situation in which the status data changes while the delay timer is inactive,
set, at an end of a delay determined by the delay timer, the delay-based data to have a value of the status data occurring at the end of the delay,
set, regardless of the delay timer, the dampening-based data to have the value of the status data if a penalty value fulfils a condition defined with one or more penalty thresholds, and otherwise set the dampening-based data to have the off-value,
set, regardless of the delay timer, the report data to have a value of the delay-based data if the dampening-based data has the on-value, and otherwise set the report data to have the off-value,
decrease, regardless of the delay timer and in response to a situation in which the penalty value is greater than zero, the penalty value in accordance with a predetermined rule over time,
set, regardless of the delay timer, penalty control data to have a preventive value in response to a situation in which increasing the penalty value during a time window exceeds a predetermined limit, the time-window including a current moment of time and having a pre-determined temporal length, and
increase, regardless of the delay timer, the penalty value in response to a situation in which i) the status data changes from the on-value to the off-value and ii) the penalty control data has a value other than the preventive value.

6 more elements

Dependencies are inferred from the claim text.