Differentiate between routers, bridges and gateways

Bridges:-

1. A bridge operates at the data link layer of the OSI model.
2. A bridge transmits the frames between similar networks.
3. Bridges are mostly used in LANs.
4. A bridge is slower.

Routers:-

1. A router operates at the network layer of the OSI model.
2. A router transmits the packets only across networks using similar protocols.
3. Routers are used in internetworking.
4. A router is faster.

Gateways:-

1. A gateway can operate in all seven layers of the OSI model
2. A gateway can transfer the packets between different protocol networks.
3. A common use of a gateway is to connect a LAN and an SNA.
4. A gateway is much slower than a router.