I was trying to perform the ping task in the lab manual. when I tried to perform the ping with "ping www.moviescope.com -f -l 4000 . I changed the buffer size to 65500 still I am not getting any error, as described in the manual. I would like to know why this test is required (What is the advantage of knowing the maximum frame size). Why I am not getting any error?, I am I doing it correctly?.