In this time, after we have modified the cost of interface em3 to 66, we can see that the path from router 5 to route 9 has changed. Because of the increment of the cost, we note that network choose a different way which is lighter cost to go to route 9. From route 5>router 6>router 7>router 11 >router 10 >router 9. Besides, we also can find the packers size on the picture is 40 bytes as well as the transmission time between every two routes.