014.01.28.5. Explain the limitation mentioned in the text regarding the direct transmission of frames between two different Ethernet networks. How can higher network layers, such as the internet layer, overcome this limitation using routers?
If we have 2 different ethernet networks with 1 host attached to both networks( and two different network interface devices), you can't directly transmit a frame from one ethernet to other unless, one sets up an ethernet bridge, this is where network layers such as ineternet layer come in. It is overcome using routers, a router takes the data out of a frame, repackages it and sends it to a host on a different physical network.
In the context of Ethernet networks, a limitation arises when attempting to directly transmit frames between two different Ethernet networks, even if a host is attached to both networks with two different network interface devices. Direct transmission is not possible unless an Ethernet bridge is set up. However, to overcome this limitation, higher layers, such as the Internet Layer (routing), utilize routers. Unlike bridges, routers operate at the network layer and can efficiently handle data transfer between different physical networks. A router takes the data out of a frame, repackages it, and then sends it to a host on a different physical network, enabling seamless communication between disparate Ethernet networks.
