Types of Bridges
Bridges in the computer network are classified into three types which include the following.
As the name suggests, it is an invisible bridge in the computer network. The main function of this bridge is to block or forward the data depending on the MAC address. The other devices within the network are unaware of the existence of bridges. These types of bridges are most popular and operate in a transparent way to the entire networks which are connected to hosts.
This bridge saves the addresses of MAC within a table that is similar to a routing table. This estimates the information when a packet is routed to its position. So it can also merge several bridges to check incoming traffic in a better way. These bridges are implemented mainly in Ethernet networks.
A translational bridge plays a key role in changing a networking system from one type to another. These bridges are used to connect two different networks like token ring & Ethernet. This bridge can add or remove the data based on the traveling direction, and forward the frames of the data link layer in between LANs which uses various types of network protocols. The different network connections are Ethernet to FDDI/token ring otherwise Ethernet on UTP (unshielded twisted pair) to coax & in between FOC and copper wiring.
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Source-route Bridge is one type of technique used for Token Ring networks and it is designed by IBM. In this bridge, the total frame route is embedded in one frame. So that it allows the bridge to make precise decisions of how the frame is forwarding using the network. By using this method, two similar network segments are connected to the data link layer. It can be done in a distributed way wherever end-stations join within the bridging algorithm.
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