SG Broadband Community

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 11:07 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) = 65535
RWIN Scaling (RFC1323) = 0 bits
Unscaled Receive Window = 65535
Note: Under Windows 9x, if you have RWIN set to any other value, and the Analyzer reports 65535 you might need to install the MS Vtcp386 fix.
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: 2621.4 kbps (327.675 KBytes/s) @ 200ms
Your RcvWindow limits you to: 1048.56 kbps (131.07 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 111 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

that what happend when i used 255552 as rwin
shall i download MS Vtcp386 ?

Lobo · Post by **Lobo** » Fri Aug 24, 2001 11:09 am

NO, 386th for ME, set Tcp1323Opts to 1, reboot

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 11:12 am

tell me short how to change that without cablenut becouse cablenut **** up my register

Lobo · Post by **Lobo** » Fri Aug 24, 2001 11:17 am

You can find out how and where here

And no Cablenut software did not mess up your registry, more like you installed with a dirty disk, thousands of people use Cablenut software with no problem

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 11:19 am

never mind about the previuos post
i changed Tcp1323Opts = 1
now its stand:
TCP options string = 020405b40103030201010402

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) = 255552
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 63888
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: 10222.08 kbps (1277.76 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4088.832 kbps (511.104 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 111 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000

what now?

Lobo · Post by **Lobo** » Fri Aug 24, 2001 11:23 am

Turn everything off, firewall, ICQ, AIM, virus scanner and do a fast speed test using the 2 RWIN's I gave you here

For later, real test

How do do speed test
1. The best time is early in the morning (3 AM - 6 AM)
2. Make sure defrag has been run so no files are fragmented
3. Delete Temp internet files, not while testing, but after each test. IE browser, click tools, internet options, click on delete files and no this will not harm system, just get rid of temp files
4. Go to a fast server such as http://www.happypuppy.com and click on 10 demos, select a LARGE file to download (not all of it , just most of it, before you click cancel) this will show you how fast you are downloading, it's not going to be quick except except early in morning when not many people on net. I recommend you go to http://www.analogX.com and download Net State live, run this while downloading as it will give you avg of your download speed, really all you need on Net Stat is incoming data, incoming totals and Local machine, right click on Net Stat anywhere, stactics and check these 3 items, the rest need not be checked unless you want them, all you care about is average. Another fast download site is ftp.lucasarts.com
Put system defrag in scheduled tasks to run everyday.
5. Probably the most important, nothing can be running during test, no firewalls, no virus stuff, no ICQ, no AIM (some of you may have to go into BIOS to disable virus scanner, nothing running except Net Stat live
Scheduled tasks will run disk defrag, 98 & SE in Taskbar, WIN ME in control panel
The people who want speed surfing or doing whatever must close all other programs.
(NOTE: at present time http://www.AOL.com seems to be fastest download site, at bottom download aol 6.0)
Or if you wish you may go to http://www.testmyspeed.com and do one of the online tests, these vary to much for me but you may like them.

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 11:35 am

hehe ok igot about modem speed on both tests but that can be becous idont live in usa ,, i live in europe (sweden)
igot better result with 255552 rwin

Lobo · Post by **Lobo** » Fri Aug 24, 2001 11:55 am

Try RWIN of 371712

Might find a test site over there, yonder

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 12:13 pm

ok i have tested 371712
its seems to work well but if u find a connection tester in europe
plz let me know

thx for all the help

Lobo · Post by **Lobo** » Fri Aug 24, 2001 12:15 pm

Type in your search box test sites in Europe

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 12:17 pm

a test i did in sweden
476 kbps or 59.49 kB/s
ok i never got over 60kB/s with mu adsl so it seems to be ok

Lobo · Post by **Lobo** » Fri Aug 24, 2001 12:20 pm

Try other RWIN's I gave you on that test, I think you can do better

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 12:37 pm

ok i have tested all rwins value that u gave me
am using Netstat live
and i get about average 64kb download
( a file that was 17mb)
when am changing to others values its so little change
how fast shall my adsl go? dont know what my isp has promised me (i think its 512kbps) but all my freinds dont get over 60kb

Lobo · Post by **Lobo** » Fri Aug 24, 2001 12:43 pm

I hope you rebooted everytime you changed RWIN, if not you did not change it, you should check analyzer here at SG to make sure RWIN is in, the # will be right after RWIN on test

Call your ISP to find out what your up/down CAPS are

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 12:45 pm

sure i did reboot and checked the tcp/ip analyz
yup am gonna call my isp
thx again for all help

Cyrgo · Post by **Cyrgo** » Fri Aug 24, 2001 1:00 pm

ok my isp promise 512kbps
yup all this helped me becouse now i coming up to 60kb/s
before i was only at 40-45kb/s
hehe do u have this forum as urs work and getting payed for it or is it only a hobby?

Lobo · Post by **Lobo** » Fri Aug 24, 2001 1:01 pm

I do it for free

Buggyman · Post by **Buggyman** » Fri Aug 24, 2001 1:33 pm

Go here->Speed testers
And look for your country.... Sweden has about 4 or 5 of them there. You'll see Sweden down toward the bottom.

SG Broadband Community

gfh

gfh

eh

ok

Speed Testers