said by stevemayman:If the packet has to travel along a path that has a lower MTU for one or more links...
1) The packets are split which doubles the transmission overhead. In the case above this overhead is just 8/1492 which doubles to 16/1492 so you would presumably only double the 0.5% overhead adding 0.5% to your max throughput speed. Not a big deal for a typical user like me.
or
2) The router asks the sending computer to resend the data with a smaller packet size that will fit through the pipe. The sending computer then splits the packet and you end up with the situation in #1 above, except that now each piece of data may have to be sent twice, which could presumably double the transmission time. A big deal!
