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CAN protocol communication type query

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vnw

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why Peer to peer communication not possible on CAN networks
 

horace1

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CAN is a priority based message passing protocol where a single device can send a message to a number of receivers which are set up to accept the specified ID
however, there is nothing to stop one seting up a higher layer protocol where nodes have addresses and using a peer to peer protocol on top of CAN, e.g. much as one can run a ring protocol on a contention bus
 
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xenos

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There are some protocol that already do one to one communication, eg J1939.

wikipedia said:
SAE J1939 defines five layers in the seven-layer OSI network model
 

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