Follow the instructions in kb283165 - how to change the pppoe mtu size in windows xp; use dr. tcp (note: windows 2000/xp only) tested with windows xp service pack 3. see also. configure tcpip max transfer unit (mtu) size in vista; setting the mtu in windows vista; change mtu settings help! kb283165 - how to change the pppoe mtu size in windows xp. Personally i have never had to manually manipulate the mtu value on any of my pcs ever. ms-mvp windows desktop experience, "when all else fails, read the instructions" ms-mvp windows expert - consumer "when all else fails read the instructions". For additional information about mtu size in microsoft windows nt 4.0, click the following article number to view the article in the microsoft knowledge base: 183229 ras uses fixed tcp/ip mtu size for more information about ppp, see request for comments (rfc) 1548..
Mtu (maximum transmission unit) size is determined in the wireless adapter or ethernet adapter of the client, not the router. the managing software (windows 10 in this case) in the client machine for the particular adapter sets the packet size transmitted from the client to the network.. On windows xp, vista and 7, click on start button and click on “run“, type “cmd” and click “ok“. on windows 8, right click at bottom left corner and select “ command prompt (admin )”. 2 type the below command and hit enter to check current mtu value .. Begin increasing the packet size from this number in small increments until you find the largest size that does not fragment. add 28 to that number (ip/icmp headers) to get the optimal mtu setting. for example, if the largest packet size from ping tests is 1462, add 28 to 1462 to get a total of 1490 which is the optimal mtu setting..