1.4 Peer-to-Peer Communication
The term peer-to-peer identifies two communicating entities, functioning or operating at the same layer of the stack, as peers. The peers are usually on different systems that are connected by one or more networks, as shown in Figure 1-1.
Figure 11 Peer relationships
Key Learning Points
The two ends of a communication are at the same layer of the stack.
The peer entities may be application processes or protocols.
The following section identifies protocols by the Requests for Comments (RFCs) that formally describe them.