https://devzone.nordicsemi.com/f/nordic-q-a/76827/multi-peripheral-and-centralHi, I developed some multi peripheral units. and also i developed some central units which are allowed to connect to the multi peripheral devices. F.E: i got 2 multi peripheral units (marked as MP1 &amp; MP2) and 2 central units (marked as C1 &amp; C2) en-USTelligent Community 13Mon, 28 Jun 2021 13:13:09 GMThttps://devzone.nordicsemi.com/thread/317499?ContentTypeID=1Mon, 28 Jun 2021 13:13:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:55b89cf7-4b47-452e-ba64-e8869d502e2aHung Bui<p>Hi Yuval,&nbsp;</p> <p>Could you describe how you configure the MP1 and MP2 to establish a new connection ? Are you filtering by just the device name or UUID in the advertising packet and connect automatically if match ? (connect_if_match=true)</p> <p>If it&#39;s the case, it explains why the connection is established again with C1/C2. The central doesn&#39;t know if it&#39;s already connected to a device. You may need to&nbsp;some connection manually (connect_if_match = false) and do the filtering on your own. The filtering can be either by address (if the C devices doesn&#39;t change address dynamically) or by using some kind of serial number in the advertising packet.&nbsp;</p><div style="clear:both;"></div>