Tweak this cable! [Archive] - SpeedGuide.net Broadband Community

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brandonx
06-25-01, 12:25 AM
TCP options string = 020405b401010402

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) = 6500
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 6500
For optimum performance, consider changing RWIN to 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: 260 kbps (32.5 KBytes/s) @ 200ms
Your RcvWindow limits you to: 104 kbps (13 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.

MTU Discovery (RFC1191) = ON

Time to live left = 113 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000



This is my friends test results, he doesn't have a Forum account, so I posted it for him. His setup is something like 500mhz (at most), 192MB RAM, and cable internet through Cable One. He downloads pretty slow (30k/sec) and wants to go faster. Thanks.

Buggyman
06-25-01, 01:07 AM
He may need to download and install the Microsoft Vtcp.386 Update patch over on the patch page if he is using Windows 95, 98 or 98SE... make sure you get the right patch for the system.

Lobo
06-25-01, 12:01 PM
Does not appear to have anyones speedpatch loaded:
Please follow instructions on help page exactly below in signature, take your time and Welcome to Speedguide
If you did not tell me please I need OS and system specs, thanks
:) :)

Rae Gun
06-28-01, 06:23 AM
bandwidth * delay product:
Your RcvWindow limits you to: 260 kbps (32.5 KBytes/s) @ 200ms Your RcvWindow limits you to: 104 kbps (13 KBytes/s) @ 500ms
Consider increasing your RWIN value to optimize TCP/IP for broadband.



(32.5 KBytes/s) ...you were right about 30k a second. i would recommend that you change the DefaultRcvWindow. thats all that i needed and now i'm blazin' up the internet:rolleyes: :D . anyways i was doomed with...i mean run Win Me and i use defaultrcvwindow - 513920.

Lobo
06-28-01, 06:35 AM
I recommend he follow directions on help page below as stated above, changing RWIN and nothing else just presents more problems:) :)