To check your mtu, simply provide your ip or dns hostname. we will test the pmtu (path maximum transfer unit) aka maximum mtu size (unfragmented) between our host and your destination, most likely the outside of your router or firewall.. Drop the test packet size down (10 or 12 bytes) and test again. notice that the packet still needs to be fragmented. (figure 2) step 4 drop the test packet size down more and test again until your. Windows 98/98se (or 95 with dun 1.3) - changing mtu use drtcp to change mtu. mtu and other os for linux, it is a matter of using the ifconfig command (read the main page for ifconfig)..
How to: change and check windows mtu size as part of network troubleshooting, you may need to check or change the maximum transmission unit (mtu) on your windows machine network interface card. the mtu is the size of a network packet that can be communicated in a single network transmission.. Changing the mtu size in windows vista, 7 or 8. altering the mtu size can help resolve these problems. this guide shows you how. open a command prompt in administrator mode: click the windows button on the task bar. replacing the numbers 1458 with 1430 – restart the computer and test again.. How to test your mtu thresholds using ping size this is just a quick post to show the command needed to vary the ping packet size. this is useful if when trying to determine a receiving system’s mtu threshold..
