SWITCH :- A network switch is used to connect devices together in a computer network. It increase the number of devices within a network. Maximum ports on a switch could be 128. It is a layer 2 device of OSI reference model, also it is a LAN device, It works on MAC addresses. The internal circuit of the switch is like star topology. Port number start from f0/0 to f0/128.
BRIDGE :- It was layer 2 device also. It joint different network. It was only used in LAN level Organization. This was work on MAC addresses, there were 2 collision domain in Bridge. This device is not in use, this is outdated.
FRAME RELAY :- It is a special kind of switch neither work on IP addresses nor on MAC addresses. It works on virtual links.
BRIDGE :- It was layer 2 device also. It joint different network. It was only used in LAN level Organization. This was work on MAC addresses, there were 2 collision domain in Bridge. This device is not in use, this is outdated.
FRAME RELAY :- It is a special kind of switch neither work on IP addresses nor on MAC addresses. It works on virtual links.