settaggio adsl

[dottor nick]

ciao ho una adsl tiscali 4 mega mi potete dire come settare i parametri in tcp optimizer? grazie

[Sunflower]

Basta che selezioni la tua velocità (4000) sulla barra in alto e clicchi su "optimal settings" e "apply settings".Ti imposta automaticamente MTU=1500,che va bene nel tuo caso dato che mi pare Tiscali usi solo il PPPoA,e RWIN=256960.

[dottor nick]

ho fatto come dici ma dopo aver messo MTU 1500 il test di speedguide mi da questo risultato


TCP options string = 020405960103030201010402
MTU = 1470
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1430
Maximum useful data in each packet = 1430, which equals MSS.
Default TCP Receive Window (RWIN) = 257400
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 64350

RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
503360 (MSS x 44 * scale factor of 8)
251680 (MSS x 44 * scale factor of 4)
125840 (MSS x 44 * scale factor of 2)
62920 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 10296 kbps (1287 KBytes/s) @ 200ms
Your TCP Window limits you to: 4118 kbps (515 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 55 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

se spunto ppoe, MTU si blocca a 1492
se ti può servire sto usando un modem trust md-3100

[Sunflower]

Originariamente inviato da dottor nick

se spunto ppoe, MTU si blocca a 1492
se ti può servire sto usando un modem trust md-3100

è normale,se spunti PPPoE ti mette MTU=1492.Ma il test poi ti rileva 1492 o sempre 1470?

[dottor nick]

con ppoe mi rileva 1492
ti posto i risultati del test, mi puoi dire se i valori sono corretti?

TCP options string = 020405ac0103030201010402
MTU = 1492
MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1452
MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value.
Default TCP Receive Window (RWIN) = 261360
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 65340


RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
511104 (MSS x 44 * scale factor of 8)
255552 (MSS x 44 * scale factor of 4)
127776 (MSS x 44 * scale factor of 2)
63888 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 10454 kbps (1307 KBytes/s) @ 200ms
Your TCP Window limits you to: 4182 kbps (523 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 55 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

[Sunflower]

Originariamente inviato da dottor nick
con ppoe mi rileva 1492
ti posto i risultati del test, mi puoi dire se i valori sono corretti?

TCP options string = 020405ac0103030201010402
MTU = 1492
MTU is optimized for PPoE DSL broadband. If not, consider raising MTU to 1500 for optimal throughput.
MSS = 1452
MSS is optimized for PPPoE DSL broadband. If not, consider raising your MTU value.
Default TCP Receive Window (RWIN) = 261360
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 65340


RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
511104 (MSS x 44 * scale factor of 8)
255552 (MSS x 44 * scale factor of 4)
127776 (MSS x 44 * scale factor of 2)
63888 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 10454 kbps (1307 KBytes/s) @ 200ms
Your TCP Window limits you to: 4182 kbps (523 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 55 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

Guarda i valori possono andare,come MTU secondo me ti conviene lasciare 1492 visto che a quanto pare se lo setti a 1500 ti viene limitato a 1470...
Cmq fai delle prove per vedere con quale MTU hai i risultati migliori:test di McLink (così controlli anche l'upload) e download di un grosso file dal solito http://debian.fastweb.it/debian-cd/3.1_r2/i386/iso-cd/

[dottor nick]

senza più modificare nulla, rifacendo il test mi da questi risultati


TCP options string = 020405960103030201010402
MTU = 1470
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1430
Maximum useful data in each packet = 1430, which equals MSS.
Default TCP Receive Window (RWIN) = 261688
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 65422

For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
503360 (MSS x 44 * scale factor of 8)
251680 (MSS x 44 * scale factor of 4)
125840 (MSS x 44 * scale factor of 2)
62920 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 10468 kbps (1308 KBytes/s) @ 200ms
Your TCP Window limits you to: 4187 kbps (523 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 55 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

non ho modificato nulla ora perchè MTU è 1470???

[Sunflower]

Originariamente inviato da dottor nick
senza più modificare nulla, rifacendo il test mi da questi risultati


TCP options string = 020405960103030201010402
MTU = 1470
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput. If you are using a router, it could be limiting your MTU regardless of Registry settings.
MSS = 1430
Maximum useful data in each packet = 1430, which equals MSS.
Default TCP Receive Window (RWIN) = 261688
RWIN Scaling (RFC1323) = 2 bits (scale factor of 4)
Unscaled TCP Receive Window = 65422

For optimum performance, consider changing RWIN to a multiple of MSS.
Other RWIN values that might work well with your current MTU/MSS:
503360 (MSS x 44 * scale factor of 8)
251680 (MSS x 44 * scale factor of 4)
125840 (MSS x 44 * scale factor of 2)
62920 (MSS x 44)
bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 10468 kbps (1308 KBytes/s) @ 200ms
Your TCP Window limits you to: 4187 kbps (523 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 55 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000 (0)

non ho modificato nulla ora perchè MTU è 1470???

credo che sulla rete Tiscali MTU venga limitato a 1470,ho visto altri utenti Tiscali anche su questo forum che non riescono a schiodarsi da quel valore.Cmq per scrupolo su TCP Optimizer prova a fare il test "largest MTU",alla fine ti dice la massima grandezza del pacchetto che non ha subito frammentazione,quello è l'MTU che puoi inserire.

[dottor nick]

questi sono i risultati

Pinging [66.230.207.58] with 40 bytes ->bytes=40 time=143ms TTL=53
Pinging [66.230.207.58] with 750 bytes ->bytes=750 time=159ms TTL=53
Pinging [66.230.207.58] with 1125 bytes ->bytes=1125 time=167ms TTL=53
Pinging [66.230.207.58] with 1312 bytes ->bytes=1312 time=171ms TTL=53
Pinging [66.230.207.58] with 1406 bytes ->bytes=1406 time=173ms TTL=53
Pinging [66.230.207.58] with 1453 bytes ->bytes=1453 time=174ms TTL=53
Pinging [66.230.207.58] with 1476 bytes -> ..fragmented
Pinging [66.230.207.58] with 1465 bytes -> ..fragmented
Pinging [66.230.207.58] with 1459 bytes ->bytes=1459 time=173ms TTL=53
Pinging [66.230.207.58] with 1462 bytes ->bytes=1462 time=173ms TTL=53
Pinging [66.230.207.58] with 1463 bytes ->bytes=1463 time=172ms TTL=53
Pinging [66.230.207.58] with 1464 bytes ->bytes=1464 time=172ms TTL=53
The largest possible non-fragmented packet is 1464 (1492 - 28 ICMP & IP headers).
You can set your MTU to 1492

perche allora se metto MTU 1492 ritorna a 1470???

[Sunflower]

Originariamente inviato da dottor nick
questi sono i risultati

Pinging [66.230.207.58] with 40 bytes ->bytes=40 time=143ms TTL=53
Pinging [66.230.207.58] with 750 bytes ->bytes=750 time=159ms TTL=53
Pinging [66.230.207.58] with 1125 bytes ->bytes=1125 time=167ms TTL=53
Pinging [66.230.207.58] with 1312 bytes ->bytes=1312 time=171ms TTL=53
Pinging [66.230.207.58] with 1406 bytes ->bytes=1406 time=173ms TTL=53
Pinging [66.230.207.58] with 1453 bytes ->bytes=1453 time=174ms TTL=53
Pinging [66.230.207.58] with 1476 bytes -> ..fragmented
Pinging [66.230.207.58] with 1465 bytes -> ..fragmented
Pinging [66.230.207.58] with 1459 bytes ->bytes=1459 time=173ms TTL=53
Pinging [66.230.207.58] with 1462 bytes ->bytes=1462 time=173ms TTL=53
Pinging [66.230.207.58] with 1463 bytes ->bytes=1463 time=172ms TTL=53
Pinging [66.230.207.58] with 1464 bytes ->bytes=1464 time=172ms TTL=53
The largest possible non-fragmented packet is 1464 (1492 - 28 ICMP & IP headers).
You can set your MTU to 1492

perche allora se metto MTU 1492 ritorna a 1470???

questo non te lo so dire,cmq se fai una ricerca anche su questo forum con MTU 1470 vedrai che tanti altri utenti Tiscali sono bloccati a quel valore...