What is the Difference Between Bridge and Router?

The main difference between a bridge and a router lies in their functions and the layers of the OSI model they operate in. Here is a comparison of their key features:

Function: Routers connect multiple networks or LANs (Local Area Networks) and manage traffic between them, while bridges connect multiple network segments or LANs within a local network or create a connection between them.
Layer: Routers operate at the network layer (Layer 3) of the OSI model, while bridges operate at the data link layer (Layer 2).
Address Handling: Routers use IP addresses for packet forwarding, while bridges use MAC addresses for packet forwarding.
Packet Forwarding: Routers determine routes using IP addresses, while bridges forward packets using MAC addresses.
Traffic Filtering: Bridges use filtering tables to decide if a frame should be forwarded or dropped.
Ports: Routers typically have more than two ports, while bridges have only two ports.
Cost: Bridges are generally less expensive than routers.
Broadcast Domain: Bridges work on a single broadcast domain, while routers work on multiple broadcast domains.
Configuration: Bridges are easier to configure, while routers are more difficult to set up and configure.

In summary, routers and bridges are both network connecting devices, but they serve different purposes and have distinct capabilities. Routers are used for connecting and managing traffic between different networks, while bridges are used for connecting network segments within a local network or for creating connections between them.