relay node in mesh

Question

i am using three boards , one is client (nrf52840) and other two boards as server(nRF52832) using light switch example . i want to get the message from client board ,to relay node and from relay node to server. i want to do hopping from A ---B-----C using relay . 
 1. what are the changes i need to do in light switch example (both in client and server) 
 2. how to publish /subscribe in nRF mesh app for these three boards one client , one relay node and another server , procedure to achieve this .i am placing the A and C nodes far away which is not in the range of A . 
 anyone have done this please guide me 
 thanks in advance

tesc · Answer

Hi, 
 ps_anu said: i want to transmit the data for a long distance so that my destination node will be not dependent on source node. 
 And that is exactly what Bluetooth mesh does, without any configuration. The message will take multiple hops until it has spread through the whole network. (Up until a configurable maximum number of hops known as the Time To Live (TTL), ranging from one to 127 hops.) 
 Regards, Terje

tesc · Answer

Hi, 
 You bind the same application key to client and server. Then you either: 
 
 configure the client to publish to the server unicast address, or 
 configure the client to publish to a group address and configure the server to subscribe to that same group address. 
 
 After that, whenever the client publishes a message that message should propagate through the network and reach the server. 
 All you need to do is the configuration in the "ends" (client and server.) How the message is relayed is automatically handled by the network. Both clients and servers can act as relay nodes. The relay feature is not related to mesh models. 
 Regards, Terje

relay node in mesh

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