Probleme avec TCP Optimizer

bonjour,
comme expliqué dans les tutoriaux, j'essaye d'optimiser ma ligne en reglant le MTU et autres parametres
mais lors de la premiere etape; pour calculer le MTU, le programme me dit :

Pinging [63.217.30.70] with 1465 bytes ->Request Timed Out
Couldn't determine largest possible MTU due to packets being lost.
You might want to try a different URL


Que faire?

MERCI DE VOTRE AIDE ???

ce pareil. je teste sur 5 sites le meme chose, de que il dit fragmented.. il dit aussy apres Request Timed Out

Pinging [70.84.37.148] with 40 bytes ->bytes=40 time=173ms TTL=44
Pinging [70.84.37.148] with 750 bytes ->bytes=750 time=297ms TTL=44
Pinging [70.84.37.148] with 1125 bytes ->bytes=1125 time=249ms TTL=44
Pinging [70.84.37.148] with 1312 bytes ->bytes=1312 time=237ms TTL=44
Pinging [70.84.37.148] with 1406 bytes ->bytes=1406 time=321ms TTL=44
Pinging [70.84.37.148] with 1453 bytes ->bytes=1453 time=267ms TTL=44
Pinging [70.84.37.148] with 1476 bytes -> ..fragmented
Pinging [70.84.37.148] with 1465 bytes ->Request Timed Out
Pinging [70.84.37.148] with 1465 bytes ->Request Timed Out
Pinging [70.84.37.148] with 1465 bytes ->Request Timed Out
Couldn't determine largest possible MTU due to packets being lost.
You might want to try a different URL

merci .

Moi aussi ca me faisait ca, comme je suis en PPOE, j'ai mis MaxMTU à 1492

Reboot et relance le test, tu verras cette fois ci TCPoptimizer te confirmera un MaxMTU à 1492

bah non....
ca marche po non plus....