A network bridge is a device that connects two local area networks together. With each incoming data packet or frame, the network bridge decides which local area network the packet belongs to. If it belongs to the same local area network that sent that packet, the bridge sends the packet back to the network; else, it sends the packet across the network across the bridge. This action ensures that only the destination network gets the data frame or packet and also ensures that the other network is kept free from unwanted traffic.
Differences Between a Switch and a Bridge
Both bridges and switches operate similarly. A bridge connects two networks, whereas a switch can connect multiple networks together. A switch can be considered as a larger version of a bridge.
Bridge Models
Bridges come in several different types of models. Each model can vary in the amount of traffic that it can handle. Smaller bridges generally support around 10 Mbps traffic. Larger switches may support several gigabytes of data.
Configuration of a Bridge
Commercially available bridges normally require only minimal configurations. The default factory settings are generally sufficient with a few additional settings about networks. Each bridge usually comes with a manual that helps to easily configure the device. Additional information about the device is usually available on manufacturer websites.
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