I am currently studying networking at university and I have a question about MTUs and maximum frame sizes.
- What is the difference between the MTU and the maximum frame size? This Wikipedia article implies that although MTU is related to the maximum frame size, it is not quite the same. I am not entirely sure how it works in that case - does the linked layer set the maximum frame size and thereafter the network layer sets the MTU based on the max. frame size (which is smaller or equal to the max. frame size)?
- Can those two values even be different (i.e. MTU 1500 bytes and max. frame size 1600 bytes)?
- If they can be different, when are they different and why are they different?
- If they cannot be different, why use two different terms to describe the same thing? Why does the Wikipedia article imply that they are not quite the same?