NRF52840 zigbee router's neighbour table (management lqi) is not updating even if the end device is disconnected

[Bhavit Rajput]

I have created zigbee network using nordic dk board, i am trying to fetch all the active nodes in the network using zdo mgmt_lqi cli and i am getting those details but when i power off any device and then if i fetch the neighbour table i am getting that powered off device too. I have tried to fetch even after 15 minutes but still i am getting that device.

Is there any timeout is defined for this ? or how can i update this neighbour table details?

[Marte Myrvold]

Hi,

If you're using end device keep alive, then the router parent should delete a child from it's neighbor table if it doesn't receive a keep alive message during the timeout period. The end device timeout period can be configured with zb_set_ed_timeout, and how often the keep alive message is sent can be configured by zb_set_keepalive_timeout. Please note that you should set this period in such a way that the end device sends at least 3 keep alive messages during the end device timeout period. You can read more about end device keep alive here. There are also several examples that use this that you can take a look at to see how it's used, like the light control example, where you can find it at line 534 in main.c in the light switch code in v4.1.0 of the SDK.

Best regards,

Marte

[Bhavit Rajput]

Ok, this will work for end device but what for Router, will it work for Router too?