A translationonal bridge can forward datalink layer frames between local area networks (LANs) which utilize different network protocols. A translational bridge can be used to connect such as Ethernet to FDDI, or Ethernet to Token Ring, or Ethernet on unshileded twisted pair (UTP) to coax, and between copper wiring, and fiber-optic cable.

The diagram here shows a token ring network and an ethernet network using a translational bridge.

When the host on the ring wishes to communicate with any host on the ethernet, it transmits the token ring frame which the bridge receives, strips of token ring headers, and reconstructs in ethernet format. The bridge then transmits the frame to the host on the destination segment.

 


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