Question

How communication works in peer to peer architecture?

Answer 1

Hey, ur answer is here,
It is a network where a few computers having equal capacity and capabilities are connected together to use the resources available on the network. In peer-to-peer network, there is no central server instead each computer can act as a server as well as client. Peer-to-Peer Communication

Protocol layers may be defined in such a way that the communications within a layer is independent of the operation of the layer being being used. This is known as "peer-to-peer" communication and is an important goal of the OSI Reference Model.

Each layer provides a protocol to communicate with its peer. When a packet is transmitted by a layer, a header consisting of Protocol Control Information (PCI) is added to the data to be sent. In OSIterminology, the packet data (also known as the Payload) is called a Protocol Data Unit (PDU). The packet so-formed, called a Service Data Unit (SDU) is passed via a service access point to the layer below. This is sent using the service of the next lower protocol layer.
Peer to peer communication using the services of a lower layer.
Hope it helps you. ☺️