A devices that links two homogeneous packet-broadcast local network, is
A devices that links two homogeneous packet-broadcast local network, is Gateway.
A default gateway allows computers on a network to communicate with computers on another network. Without it, the network is isolated from the outside. Basically, computers send data that is bound for other networks (one that does not belong to its local IP range) through the default gateway.
A gateway is a node (router) in a computer network, a key stopping point for data on its way to or from other networks. ... In a workplace, the gateway is the computer that routes traffic from a workstation to the outside network that is serving up the Web pages.
While forwarding an IP packet to another network, the gateway might or might not perform Network Address Translation. A gateway is an essential feature of most routers, although other devices (such as any PC or server) can function as a gateway.