VTCP.386 not fixed in Windows ME

[StoneManAl]

Is there a vtcp.386 fix available for Windows ME? The TCP Analyzer is giving me the wrong value for RWIN. The IP address is right so it looks like the vtcp.386 problem still hasn't been fixed. help!

[Lobo]

Set Tcp1323Opts to 1, no 386th for ME

[StoneManAl]

Thanks for the suggestion Lobo but it's still no go. I edited the registry as you suggested, rebooted the machine, checked the TCP Analyzer and it still reads an RWIN of 65535. I've got it set to 256960. Any other thoughts?

[Lobo]

Please click in my signature where it says Test your tweak here, then:
At top where it says edit click and select, Select all,
Then go back to same edit button at top, click and select copy.
Come back to Speedguide, same thread you were on, in post reply box, with cursor blinking at begining of box go to top, edit, click, select paste, click, this will put information in box. Please X out your IP address, Thank you.

[chaobox99]

I've had the same problem before. After I installed cablenut adjuster, I ran TCP/IP tests using different RWIN values, but all the RWIN values in the tests turned out to be 65535. The problem was solved after I installed the SG speed & web patches.
One of the values in the registry might have caused that, but I dunno which one.

Tcp1323opts sounds like the right one (allowing scaling with no imestamps), I wonder why it doesn't go
Try install the SG patches see if it works.

[Lobo]

If you loaded a ccs file, RWIN 64240, Tcp1323Opts would have been set at 0, thus if you raised RWIN above 65535 you would get reading of 65535 until you changed Tcp1323Opts to 1

[chaobox99]

Gotcha

[StoneManAl]

MainCable ModemsDiscussionWindows 9xReviewsEditorialsInformationTweaks & PatchesSG TCP/IP AnalyzerSetting up a LANSecurityBits and BytesInteresting StoriesAutologin with RRCable/DSL FAQTerms & DefinitionsCable / DSL Links">">">">">">">">
Tue Aug 14 13:05:11 2001.



SpeedGuide.net TCP/IP Analyzer
TCP properties for IP = xxxxxxxxxxxxxxxx
Note: Read the FAQ if the above is not your IP address.
Browser/OS = Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; Win 9x 4.90)

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 = 116 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000


P.S. I haven't installed the SG tweaks yet. Will this help?

[Lobo]

Do you have Cablenuts adjuster installed and are you going through proxy server UP above it says Tcp1323Opts is set at 0

[Lobo]

Do not load ccs file, follow directions
Click on help page below in signature and follow directions exactly, please leave your OS and system specs if you have not done so.Also if you have Cablenuts adjuster installed I need to know that. On 2nd page of help page at bottom are some Tips and how to do speed test. Thank you and good luck.

[StoneManAl]

SpeedGuide.net TCP/IP Analyzer
TCP properties for IP = xxxxxxxxxxxxxxxxx
Note: Read the FAQ if the above is not your IP address.
Browser/OS = Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; Win 9x 4.90)

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) = 256960
RWIN Scaling (RFC1323) = 2 bits
Unscaled Receive Window = 64240
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)
128480 (MSS x 44 * scale factor of 2)
64240 (MSS x 44)

bandwidth * delay product:
Your RcvWindow limits you to: 10278.4 kbps (1284.8 KBytes/s) @ 200ms
Your RcvWindow limits you to: 4111.36 kbps (513.92 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 52 hops
TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349)= 00000000



No cablenuts and no proxy. Just installed SG tweaks. Here's the latest analysis. I think this is okay now. Agree? Thanks much for all of your help and patience.

[Lobo]

Yes it looks OK, our patch set Tcp1323 at 1

[StoneManAl]

Lobo - Here's the additional info: PIIIMMX, 128MB RAM, Windows ME. Using a cable modem and IE 5.5.

[Lobo]

What size CPU

[chaobox99]

Hey, Lobo, how did u tell his TCp1323 is set at 0 from the TCP/IP test result, besides that RWIN scaling = 0

[Lobo]

Thats it, no scaling 0

[StoneManAl]

Lobo - Sorry! It's a 500Mhz

Thanks again. This thing seems to be cooking now!

[StoneManAl]

Lobo - Sorry! It's a 500Mhz. Thanks again. This thing's cookin' now!

[Lobo]

Tells you where and how to change RWIN (Defaulr Rvc Window) here

Try RWIN's of 64240, 449680, 467200, 470120


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 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 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 www.AOL.com seems to be fastest download site, at bottom download aol 6.0)
Or if you wish you may go to www.testmyspeed.com and do one of the online tests, these vary to much for me but you may like them.