Is this good ?

[Andrew]

I got win2k pro, 500mhz with 192mb ram. With Cable modem

Test running..........
** Speed 4354(down)/827(up) kbps **
(At least 86 times faster than a 56k modem)
Finish.
TCP options string = 020405b40103030301010402

MTU = 1500
MTU is fully optimized for broadband.

MSS = 1460
Maximum useful data in each packet = 1460, which is equal to MSS.

Default Receive Window (RWIN) = 417560
RWIN Scaling (RFC1323) = 3 bits
Unscaled Receive Window = 52195
RWIN is a multiple of MSS
Other values for RWIN that might work well with your current MTU/MSS:
513920 (MSS x 44 * scale factor of 8)
256960 (MSS x 44 * scale factor of 4)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 16702.4 kbps (2087.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 6680.96 kbps (835.12 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 31 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

[JawZ]

you look good but how is the stability of real downloads? Not speed tests, actual downloads of large files. To give you an example, I can d/l AOL 6.0 which is a 29.1 MB file in 46 seconds. I get a sustained 649 KBps transfer rate. It is rock solid. That how you want your d/l to be...stable...not fluctuating up and down. Let me know how you test with downloads.