Network bridge: Meaning (information, definition, explanation, facts)

A network bridge is an abstract device that connects multiple network segments along the data link layer.

A concrete example of a bridge in a computer network is the network switch.

A USB-to-USB network bridge is a cable that connects two computers to transfer files (without a network switch). See InterLnk, null-modem.

A repeater is a similar abstract device that connects network segments at the physical layer. A hub is an example of a repeater.