What is the primary function of a bridge in networking?

The primary function of a bridge in networking is to interconnect like LANs (Local Area Networks). Bridges operate at the data link layer (Layer 2) of the OSI model and are used to segment network traffic, making it possible for devices on separate LAN segments to communicate with each other as if they were on the same network.

By connecting like LANs, bridges help in managing network traffic by filtering and forwarding data packets based on MAC addresses. This reduces the amount of collision on the network and can enhance overall performance by ensuring more efficient data transfer.

In the context of networking hardware, bridges are essential when integrating multiple networks or extending the coverage of a single network area, especially if those networks use the same data link protocols. This functionality is particularly useful in larger installations to maintain network efficiency and organization.