ERCOLINO ha scritto:
Se usi il PPPoE va messo 1492
Se metti la barra a 7 ,poi su optimal setting mette lui in automatico il RWIn giusto in base all'MTU e alla barra
Attenzione però se si usa il modem di alice anche se si cambia l'MTU nel tcp ,dovrebbe rimanere sempre 1480 perchè lo rileva dal modem
I valori sono cambiati, adesso è scritto TCP Window: 522720 (multiple of MSS)
« SpeedGuide.net TCP Analyzer Results »
Tested on: 12.13.2007 16:56
IP address: 87.12.xxx.xxx
TCP options string: 020405a00103030301010402
MSS: 1440
MTU: 1480
TCP Window: 522720 (multiple of MSS)
RWIN Scaling: 3
Unscaled RWIN : 65340
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 20909kbps (2614KBytes/s)
BDP limit (500ms): 8364kbps (1045KBytes/s)
MTU Discovery: ON
TTL: 47
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
Pinging [66.230.207.58] with 40 bytes ->bytes=40 time=191ms TTL=52
Pinging [66.230.207.58] with 750 bytes ->bytes=750 time=205ms TTL=52
Pinging [66.230.207.58] with 1125 bytes ->bytes=1125 time=217ms TTL=52
Pinging [66.230.207.58] with 1312 bytes ->bytes=1312 time=221ms TTL=52
Pinging [66.230.207.58] with 1406 bytes ->bytes=1406 time=219ms TTL=52
Pinging [66.230.207.58] with 1453 bytes -> ..fragmented
Pinging [66.230.207.58] with 1430 bytes ->bytes=1430 time=219ms TTL=52
Pinging [66.230.207.58] with 1441 bytes ->bytes=1441 time=219ms TTL=52
Pinging [66.230.207.58] with 1447 bytes ->bytes=1447 time=221ms TTL=52
Pinging [66.230.207.58] with 1450 bytes ->bytes=1450 time=219ms TTL=52
Pinging [66.230.207.58] with 1451 bytes ->bytes=1451 time=221ms TTL=52
Pinging [66.230.207.58] with 1452 bytes ->bytes=1452 time=224ms TTL=52
The largest possible non-fragmented packet is 1452 (1480 - 28 ICMP & IP headers).
You can set your MTU to 1480
Perchè esce ancora fragmented?
Poi mi da sempre MTU: 1480, anche se l'ho impostato su 1492.