== Network & Routing Layer ==
 
== Network & Routing Layer ==
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Contiki automatically forms a wireless IPv6 network with the help of routing protocol called RPL (Routing Protocol for Low-power and Lossy Networks (LLNs)).<br>
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* Contiki automatically forms a wireless IPv6 network with the help of routing protocol called RPL (Routing Protocol for Low-power and Lossy Networks (LLNs)).<br>
RPL forms routing graph from root node or AP (Access Point). It builds acyclic graph from root node called DODAG (Destination Oriented Directed Acyclic Graph).<br>
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* RPL forms routing graph from root node or AP (Access Point). It builds acyclic graph from root node called DODAG (Destination Oriented Directed Acyclic Graph).<br>
 
[[File:RPLDODAG.png|center|frame|RPL DODAG]]<br>
 
[[File:RPLDODAG.png|center|frame|RPL DODAG]]<br>
Exception encountered, of type "Error"