https://devzone.nordicsemi.com/f/nordic-q-a/126282/how-to-connect-nrf52840-into-mesh-of-50-devicehow to create the nrf52840 mesh of more than 50 devices ? I am using the chat sample for this mesh network but i am tested with the 12 boards but i am getting reply from only 10 nrf52840 in the mesh network after 10th device i am not getting reply fromen-USTelligent Community 13Wed, 07 Jan 2026 12:53:10 GMThttps://devzone.nordicsemi.com/thread/558150?ContentTypeID=1Wed, 07 Jan 2026 12:53:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c3da9ea9-a959-43ad-872c-ed01ec5ecccetesc<p>Hi,</p> <p>This is most likely the replay protection list (RPL). On each node, this list must be large enough to contain entries for all elements sending messages to that node. If a message is received from a new address, and the RPL is already full, then the message is discarded (as per Bluetooth Mesh specification.)</p> <p>The RPL is only for messages to be received by the node, and not messages for relay. Nevertheless, if all nodes communicates with each other, then the list must be large enough to contain all of the sender addresses, which may include all element addresses on the network.</p> <p>The size (capacity) of the RPL defaults to 10, and it is configured through <a href="https://docs.nordicsemi.com/bundle/ncs-latest/page/kconfig/index.html#CONFIG_BT_MESH_CRPL">CONFIG_BT_MESH_CRPL</a>.</p> <p>Regards,<br />Terje</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/557678?ContentTypeID=1Mon, 29 Dec 2025 13:22:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d5f61758-cab3-4a48-ace4-39f5acc8ad3dsibi<p>ok</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/557677?ContentTypeID=1Mon, 29 Dec 2025 13:20:58 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e3d98dab-bb90-45a2-a517-c1354f80fb8fKenneth<p>Hello,</p> <p>Key personnel is away this week, so we will look into this question next week.</p> <p>Kenneth</p><div style="clear:both;"></div>