Ho windows XP
Ho impostato i valori MTU MRU ed MSS rispettivamente a 1500-1500 1460.li ho modifiati sia dal modem che con tcp optimizer.
Ora,ho fatto un test con speedtest e mi ha riportato i seguenti valori
Ho capito che è importante impostare il TCP RECEIVE WINDOWS,ma non so com fare
SpeedGuide.net TCP/IP Analyzer
TCP properties for IP = 83.xxxxxx
Browser/OS = Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; InfoPath.1)
Notes: Read the Analyzer FAQ if the above is not your IP address.
TCP options string = 020405a00103030101010402
MTU = 1480
MTU is optimized for Windows XP PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1440
MSS is optimized for Windows XP PPPoE DSL broadband. If not, consider raising your MTU value.
Default TCP Receive Window (RWIN) = 128480
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled TCP Receive Window = 64240
For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
506880 (MSS x 44 * scale factor of

253440 (MSS x 44 * scale factor of 4)
126720 (MSS x 44 * scale factor of 2)
63360 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):
Your TCP Window limits you to: 5139 kbps (642 KBytes/s) @ 200ms
Your TCP Window limits you to: 2056 kbps (257 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 49 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)
« SpeedGuide.net TCP Analyzer Results »
Tested on: 04.28.2007 05:44
IP address: 83.190.xxx.xxx
TCP options string: 020405a00103030101010402
MSS: 1440
MTU: 1480
TCP Window: 128480 (NOT multiple of MSS)
RWIN Scaling: 1
Unscaled RWIN : 64240
Reccomended RWINs: 63360, 126720, 253440, 506880
BDP limit (200ms): 5139kbps (642KBytes/s)
BDP limit (500ms): 2056kbps (257KBytes/s)
MTU Discovery: ON
TTL: 49
Timestamps: OFF
SACKs: ON
IP ToS: 00000000 (0)
Cosa devo fare per settare al meglio la mia connessione?in particolare il valore TCP receive windows
Grazie
giuseppe