HUB, Switch, and Router

1. Overview

HUB	SWITCH	ROUTER
HUB works in Physical Layer of OSI Model	SWITCH works in Datalink Layer of OSI Model	ROUTER works in Network Layer of OSI Model
HUB is a broadcast device	SWITCH is a multicast device	ROUTER is a routing device used to create a route for transmitting data packets
HUB sends data in the form of packets	SWITCH sends data in the form of frames	ROUTER sends data in the form packet
HUB only works in half-duplex	SWITCH works in full-duplex	ROUTER works in full-duplex
Only one device can send data at a time	Multiple devices can send data at the same time	Multiple devices can send data at the same time
HUB does not store any MAC/IP address to transfer data	SWITCH stores and uses MAC address of devices to transfer data	ROUTER uses IP address to transfer data

2. Reference

https://www.youtube.com/watch?v=1z0ULvg_pW8

https://www.youtube.com/watch?v=ck3gx9HB9-k