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How Packet switching, Circuit switching and Message switching works?

What is Switching and understanding different types of switching. 1. Connection less (Packet Switching) 2. Connection oriented (Circuit Switching) 3. Message switching Switching: Switching is a process to send the packets coming in from one switchport to another switch port leading towards the destination. • Switching is process of Data Link Layer (2 layer) of the OSI model. • The data at this level is called Segment. • The Segment receiving port called Ingress port and segment sending port called Egress port. Connectionless (Packet Switching): • It is also known as datagram switching. • Data is broken into small chunks called packets. Source and Destination switching information is added to header and transmitted individually. • It is easy for intermediate networking devices to store small size packets which don’t take much resources like CPU/Memory • The internet uses packet switching. • Priority can be used to differentiate data during process. A data with High priority is sent first. Connection Oriented: (Circuit Switching): • It is mostly used for voice traffic. • In Circuit Switching a dedicated channel (or circuit) is set up for a single connection between the sender and recipient. Circuit switching is pass through three phases 1. Establish a circuit 2. Transfer the data 3. Disconnect the circuit Note: A normal voice call is the example of Circuit Switching Message Switching: • No independent connection made • Consider complete data as independent block. • Message is checked for error on every intermediate device and wait for the next hope to allow it to send data. • This is also called as store-and-forward technique