Sifr
10-04-2005, 07:58
Ciao a tutti,
ho da poco installato un router (Zyxel Prestige 650H-E1) passando cosė dal PPPoA del modem USB al PPPoE del modem ethernet. Ora stavo provando a cambiare alcuni settaggi della connessione, soprattutto MTU ed MSS. Il problema č che non riesco a fargli nulla! Ho prima installato la patch di speedguide per le connessioni over Ethernet, riavviato e testato i valori, sempre uguali... Poi ho provato a cambiare il registro manualmente, e i valori sono esatti, tuttavia continua a girare con 1440\1400 di MTU e MSS... E' possibile che il router abbia dei settaggi di default che non conosco? Oppure č un problema mio (magari non ho fatto qualcosa che con il modem USB non serviva ma con il router sė)...
TCP options string = 020405780103030101010402
MTU = 1440
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.
MSS = 1400
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.
Default Receive Window (RWIN) = 65800
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled Receive Window = 32900
RWIN is not fully optimized (even though it is a comparatively large number). The unscaled RWIN value is lower than it should be. Also, RWIN being close to and above 65535 does not justify the header overhead of enabling TCP Options. You might want to use one of the recommended RWIN values below.
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
515200 (MSS x 46 * scale factor of 8)
257600 (MSS x 46 * scale factor of 4)
128800 (MSS x 46 * scale factor of 2)
64400 (MSS x 46)
bandwidth * delay product (Note this is not a speed test):
Your RcvWindow limits you to: 2632 kbps (329 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1052.8 kbps (131.6 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 54 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000
Bye
Sifr
ho da poco installato un router (Zyxel Prestige 650H-E1) passando cosė dal PPPoA del modem USB al PPPoE del modem ethernet. Ora stavo provando a cambiare alcuni settaggi della connessione, soprattutto MTU ed MSS. Il problema č che non riesco a fargli nulla! Ho prima installato la patch di speedguide per le connessioni over Ethernet, riavviato e testato i valori, sempre uguali... Poi ho provato a cambiare il registro manualmente, e i valori sono esatti, tuttavia continua a girare con 1440\1400 di MTU e MSS... E' possibile che il router abbia dei settaggi di default che non conosco? Oppure č un problema mio (magari non ho fatto qualcosa che con il modem USB non serviva ma con il router sė)...
TCP options string = 020405780103030101010402
MTU = 1440
MTU is not fully optimized for broadband. Consider increasing your MTU to 1500 for better throughput.
MSS = 1400
MSS is not fully optimized for broadband (although it might work well for slower connections). Consider increasing your MTU value.
Default Receive Window (RWIN) = 65800
RWIN Scaling (RFC1323) = 1 bits (scale factor of 2)
Unscaled Receive Window = 32900
RWIN is not fully optimized (even though it is a comparatively large number). The unscaled RWIN value is lower than it should be. Also, RWIN being close to and above 65535 does not justify the header overhead of enabling TCP Options. You might want to use one of the recommended RWIN values below.
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
515200 (MSS x 46 * scale factor of 8)
257600 (MSS x 46 * scale factor of 4)
128800 (MSS x 46 * scale factor of 2)
64400 (MSS x 46)
bandwidth * delay product (Note this is not a speed test):
Your RcvWindow limits you to: 2632 kbps (329 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1052.8 kbps (131.6 KBytes/s) @ 500ms
MTU Discovery (RFC1191) = ON
Time to live left = 54 hops
TTL value is ok.
Timestamps (RFC1323) = OFF
Selective Acknowledgements (RFC2018) = ON
IP type of service field (RFC1349) = 00000000
Bye
Sifr