MLE Service

Specifies the delay wait interval (in milliseconds) used by attach backoff feature after a successful attach before it resets the current backoff interval back to the minimum value.

If it is set to zero then the device resets its backoff attach interval immediately after a successful attach. With a non-zero value, if after a successful attach, the device happens to detach within the delay interval, the reattach process resumes with the previous backoff interval (as if the attach did not happen).

This behavior is helpful in the situation where a battery-powered device has poor link quality to its parent and therefore attaches and detaches frequently from the parent. Using a non-zero wait interval ensures that the attach backoff interval does not reset on each attach and that the device does not drain its battery quickly trying to re-attach too frequently.

Define as 1 to enable attach backoff feature.

When this feature is enabled, an exponentially increasing backoff wait time is added between attach attempts. If device is sleepy, the radio will be put to sleep during the wait time. This ensures that a battery-powered sleepy end-device does not drain its battery by continuously searching for a parent to attach to (when there is no router/parent for it to attach).

The backoff time starts from a minimum interval specified by OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_MINIMUM_INTERVAL, and every attach attempt the wait time is doubled up to OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_MAXIMUM_INTERVAL which specifies the maximum wait time.

Once the wait time reaches the maximum, a random jitter interval is added to it. The maximum value for jitter is specified by OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_JITTER_INTERVAL. The random jitter is selected uniformly within range [-JITTER, +JITTER]. It is only added when the backoff wait interval is at maximum value.

Specifies the maximum jitter interval (in milliseconds) used by attach backoff feature.

Applicable only if attach backoff feature is enabled (see OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_ENABLE).

Please see OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_ENABLE description for more details.

Specifies the maximum backoff wait interval (in milliseconds) used by attach backoff feature.

Applicable only if attach backoff feature is enabled (see OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_ENABLE).

Please see OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_ENABLE description for more details.

Specifies the minimum backoff wait interval (in milliseconds) used by attach backoff feature.

Applicable only if attach backoff feature is enabled (see OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_ENABLE).

Please see OPENTHREAD_CONFIG_MLE_ATTACH_BACKOFF_ENABLE description for more details.

Specifies the desired number of router links that a REED / FED attempts to maintain.

The default child timeout value (in seconds).

Specifies the default value for mLeaderWeightAdjustment in otDeviceProperties.

MUST be from -16 up to +16.

This value is used to adjust the calculated Leader Weight from otDeviceProperties.

Define as 1 to enable feature to set device properties which are used for calculating the local leader weight on a device.

It is enabled by default on Thread Version 1.4 or later.

Define as 1 for a child to inform its previous parent when it attaches to a new parent.

If this feature is enabled, when a device attaches to a new parent, it will send an IP message (with empty payload and mesh-local IP address as the source address) to its previous parent.

The maximum number of supported IPv6 address registrations per child.

The maximum number of IPv6 address registrations for MTD.

Define as 1 to enable Link Metrics initiator feature.

The max number of series that a Link Metrics Subject can track simultaneously.

The max number of series that a Link Metrics Subject (MTD device) can track simultaneously.

Define as 1 to enable Link Metrics subject feature.

Specifies the minimum link margin in dBm required before attempting to establish a link with a neighboring router.

Enable experimental mode for 'deep' networks, allowing packet routes up to 32 nodes.

This mode is incompatible with Thread 1.1.1 and older.

The maximum number of children.

The maximum number of routers in a Thread network.

Define as 1 to support otThreadRegisterParentResponseCallback() API which registers a callback to notify user of received Parent Response message(s) during attach.

This API is mainly intended for debugging and therefore is disabled by default.

Specifies the minimum link margin in dBm required before attempting to merge to a different partition.

Define to 1 to send an MLE Link Request when MAX_NEIGHBOR_AGE is reached for a neighboring router.

Define as 1 to enable sending of a unicast MLE Announce message in response to a received Announce message from a device.

Enable setting steering data out of band.