Knowledge Base

Network Bridging

Network bridging describes the action taken by network equipment to allow two or more communication networks. It is also used to allow two or more network segments to create an aggregate network. It is distinct from routing, which allows the networks to communicate independently as separate networks. A bridge is a network device that connects more than one network segment. In the OSI model bridging acts in the first two layers.

Network Bridging Technologies

There are four types of bridging technologies. They are simple bridging, multi-port bridging, learning, or transparent bridging, and source-route bridging.

Transparent bridging was originally developed by the Digital Equipment Corporation (DEC) in the 1980s. Transparent bridging uses a table called the forwarding information base to control the forwarding of frames between network segments.

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