I don't understand some things in Store and Forward equation:D  -> Number of channels and switches pairs. tr -> Routing time.tw -> Transfer time in a channel.What is the L/W?And normally exercises provide me tw (time transfer in a link), but now I am doing an exercise in which tw is not provided. I think I should compute with the speed of the links and the data size transferred. But I don't know what should be the size for the data.Thanks.
transmission delay in store and forward, what is L/W and how to compute tw
computer networks