· Network Maximum Frame size
Use ping to find max frame size The response, Packet needs to be fragmented but DF set, means that the frame is too large to be on the network and needs to be fragmented. You need to try different sizes until you find the max size
From Windows box
A. Type ping www.website.com in the command prompt window, and press Enter to find its IP address.
B. type ping www.website.com –f –l 1500 and press Enter.
C. type ping www.website.com –f –l 1300 and press Enter.
D. Keep going up and down to find the max size allowed