Problem
1. Which fields of the IP header change from router to router?
2. Calculate the HLEN value if the total length is 1200 bytes, 1176 of which is data from the upper layer. 3. lists the MTUs for many different protocols. The MTUs range from 296 to 65,535. What would be the advantages of having a large MTU? What would be the advantages of having a small MTU?