What if the parent node route goes down?

RE: What if the parent node route goes down?

liisa — Wed, 21 May 2025 00:33:37 GMT

Ok,thank you very much.

RE: What if the parent node route goes down?

Amanda Hsieh — Tue, 20 May 2025 12:55:18 GMT

Hi,

Seems you want to know MLE Child Timeout, after which time or 4 consequtives frame transmission failures, a child will try to find a new parent. If you use NCS (2.9.0+), you may use CONFIG_OPENTHREAD_MLE_CHILD_TIMEOUT to configure the timeout.

Nevertheless, the API is: otThreadSetChildTimeout

Links:

RE: What if the parent node route goes down?

liisa — Mon, 19 May 2025 00:55:33 GMT

Hi Amanda H,

Thank you for your reply, Can you tell me which API and macro definitions describe it in the code?

Best regards,

liisa

RE: What if the parent node route goes down?

Amanda Hsieh — Fri, 16 May 2025 12:41:52 GMT

Hi liisa,

The Thread protocol provides the reconnection mechanism for the device to ensure that the other device is available for communication. This check can be done both by a child device to verify that its parent is available and by the parent to monitor the status of its child.

Regards,
Amanda H.