Deteriming MTU packet size

[BTRY B 529th FA BN]

I am trying to determine my maximum packet size before it needs to be fragmented.

I am doing ping in CMD

ping "address" -f -l
I am starting out at 1500 - in what increments do i lower my MTU size to determine what is best?

Thanks

 

[BTRY B 529th FA BN]

I found a max MTU of 1442, then i jumped out of the game and checked again and 1442 MTU size needed to be fragmented. The next size I found was 1400 - is that normal for it to be fine one minute then need to be lower the next?

 

[jlazzaro]

what type of Internet connection do you have?

 

[JackMDS]

You are assuming that there is one magical MTU that would yield max efficiency under all circumstance.

Just set it to 1500 if you have cable, or 1492 if you are using DSL, and spend your valuable time on something more fruitful.

 

[spidey07]

You are assuming that there is one magical MTU that would yield max efficiency under all circumstance.

Just set it to 1500 if you have cable, or 1492 if you are using DSL, and spend your valuable time on something more fruitful.

But what if he's using FDDI or token ring? 1500 would be pretty darn inefficient!
😀

 

[xSauronx]

But what if he's using FDDI or token ring? 1500 would be pretty darn inefficient!
😀

*crickets chirping*

 

[Nothinman]

I found a max MTU of 1442, then i jumped out of the game and checked again and 1442 MTU size needed to be fragmented. The next size I found was 1400 - is that normal for it to be fine one minute then need to be lower the next?

You'll never find what you want unless you can control all of the equipment between you and your destination.

 

[BTRY B 529th FA BN]

ok, i didn't know that, thanks