TCP High Performance Test Failed

tonytoff

New Member
Please help,

Ive tried everyone -Netgear support, DSLzoneUK, Tiscali forums and posted on here with no reply!
I have ran the Microsoft conectivity test many times on my new Netgear DG834G V4(firmware v5.01.09) and it fails on the TCP high performance test(see screenshot attached) I like my Vista tweaks and always had it set to highlyrestricted with my old Tiscali standard Siemens SE587 receiving speeds of over 7Mb on a 8Mb connection almost everyday.
Some of my DSLzone forum buddies have said that theirs passes the test but why does mine fail. I have asked Netgear support and they cannot tell me whether this router supports this feature or not....what a joke!

here is the link to the connectivity test for all routers but you must use Internet Ezplorer; http://www.microsoft.com/windows/using/tools/igd/default.mspx

Please try and solve this mystery for me. I have just recovered my system recently and it still fails the test so its not my computers set-up.

Thanks for any assistance.:)

I will try and attach it seperately this time.
(Click on the X in the bottom right corner after clicking on the image to expand)

[URL="http://www.vistax64.com/attachment.php?attachmentid=4948&d=1215393849"][/URL]
 

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  • TCP test.jpg
    TCP test.jpg
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My Computer

Have you disabled TCP Autotuning?
 

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Hi John,
thanks for the reply, Ive tried everywhere! I have everything disabled now including "auto-tuning" I got the same results as mentioned above when I had it enabled so I am not sure what it could be? I have not reset my router though but found no need as I have only changed the MTU in it. I may reset it this week and will post back if something changes.
Can I ask; Is that test in which my router failed definitely Auto-Tuning?? Im just curious?
If you think of anything then please advise, Its time for bed unfortunately.
I will try again tommorow with and without auto-tuning disabled.

Thanks John.
 

My Computer

sorry, what I meant to ask was; does that test indicate that "AUTO-TUNING" is not supported or is it some other Vista tweak? like ECN or RSS that is not supported?

thanks.
 

My Computer

Auto Tuning is supported by Vista - but changing the MTU in your router amounts to not allowing Vista to use auto tuning - reset your router to defaults and try the test and you should be golden.
 

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Thanks John,

I see what you mean and will follow your advice as instructed tommorow as it sounds correct, BUT Im sure some of the boys over here will be in total disagreement simply because we all have out MTUs set in our routers and them guys(with the same router) all pass the test!
I personally hope your right mate and it is the MTU causing the problem and I wont be surprised if you are.

Thanks for your assistance mate and I will post back tommorow on the results.

Anthony.:D
 

My Computer

Look at it this way - if *everything* in Vista is default and *everything* in the router is default and it does not work, then your boys are right - which means you need to look at your ISP.

If any of you all share the same ISP, package and live in the same neighborhood, then you have to figure out why this only happens to you.

however, I have a feeling it is either the router (try exchanging it for a new one) or your ISP.
 

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    eVGA X58 Classified 3 (141-GT-E770-A1)
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    3 * Mushkin 998981 Redline Enhanced triple channel DDR3 4 GB CL7 DDR3 1600 MHz (PC3-12800)
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    Logitech G15 (gen 2)
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    Internet Speed
    AT&T Lightspeed Gigabit duplex
  • Operating System
    Sabayon Linux (current, weekly updates, 5.1.x kernel)
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HI John,
good point man! I was thinking something similar to this myself! why is it only happening to me! as you said. ah sod it Im resetting the router right now!
Oh, "try exchanging it for a new one" erm; bad subject that one mate lol, this is the 3rd one. The first time I ordered the Thomsons 585v7 but lost loads of sync, so I asked them to replace it for a Netgear(same model as now) and it was not functioning properly - the power supply was faulty and was pretty dangerous, the router would flash on and was shorting! This is the third one.
 

My Computer

Hi John,
No joy Im afraid, I reset it to defaults firstly within the user interface - this did not work so I reset fully using the reset switch on the back of the router and setting back up via the installation CD!
I accept your theory that it could be related to the ISP but I used to pass the test with my ISP issued Siemens router??? I can say for sure on Friday because this is when my line changes over to my new ISP.

Thanks John, when I get home from work later today I shall investigate further.

-Anthony
 

My Computer

Hi john,
I ran the tests again after the router reset this morning and its still failing! Auto -tuning was set to =normal. So I set Auto-Tuning=disabled and no change unfortunatly, still - not supported!
I am more confused now as one of my friends who says it works on his system has exactly the same router(NetgearDG834Gv4 + same firmware) and surprisingly the same ISP -Tiscali UK.
Although another friend says its not a very reliable test as he has had some results that he knows for certain are wrong from the test. But its so consistent! when I use my old Siemens it passes the test and when I plug this Netgear in it fails.
I dont think I will ever figure it out, hopefully as a long shot the change of ISPs on Friday may provide something?
Another point though where my setup differs from the other guys is the fact that I am doing a Broadband monitoring survey for a popular UK broadband info site that involves a Linksys router/monitoring unit being connected all the time through ethernet to my router! Its collecting stats on UK ISPs and monitoring performance. All it is - is a Linksys WRT54GL with different firmware connected to my router!
Could this cause a problem? I know it runs a test every 10 or 20 mins to test things such as Latency, download speeds, web-site/page load times. I dont think this could interfere with TCP performance but I am a Noob so...

Could you take a look at the screen-shot again that I will post in the next post and jusr read over it again and varify that it is TCP that its saying is not supported??
because if you read the whole paragraph it mentions scaling?? possibly RSS side scaling? if you get time that is.

Thanks again John.
-Anthony.
 

My Computer

Ah and I forgot to mention;

not sure whether its related or not but I have noticed when I reset this router and set it up from scratch I log into the router to find that the MTU has been set at 1458 automatically, everytime.
I figured out my best MTU by pinging the BBC.co.uk as we do over here and I found my best MTU was 1430 (or 1402 + 28= 1430) I did not get a responsive ping until 1402 so why is this Netgear setting it at 1458? is it trying to guess whats best for my connection? do some routers do this? I always thought it was set at 1500 by default?
I have reset it before to 1430 and 1500 and still failed the TCP test though.

Thanks mate.
 

My Computer

That could very *easily* be interfering, as it is analyzing each packet as it is sent through and doing something with it - thereby not giving true readings to any server that you connect to.

That is just conjecture, but you should try it just computer and modem first, and if that works then just add a router - nothing else. If it stops working, it is the router, obviously, and if it never works to begin with then something really goofy is going on.
 

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Hi John,
Yes, with that explanation I see what you mean and understand what you are saying! I will run the test after a re-boot without the monitoring unit(Linksys) attached and see how it goes. The monitoring unit is supposed to be left switched on all the time but I dont think 10 or 20 minutes off will be the end of the world. I will give it a try tonight!
Thanks again for your assistance. I will post back tonight.

Anthony.
 

My Computer

Good luck, and hopefully that is the cause of your problems.
 

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System One System Two

  • Operating System
    Windows 10 Pro X64 Insider Preview (Skip Ahead) latest build
    Manufacturer/Model
    The Beast Model V (homebrew)
    CPU
    Intel Core i7 965 EE @ 3.6 GHz
    Motherboard
    eVGA X58 Classified 3 (141-GT-E770-A1)
    Memory
    3 * Mushkin 998981 Redline Enhanced triple channel DDR3 4 GB CL7 DDR3 1600 MHz (PC3-12800)
    Graphics Card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek HD Audio (onboard)
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2 * 1920 x 1080
    Hard Drives
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD (System)
    Crucial MX100 CT256MX100SSD1 256GB SATA III SSD (User Tree)
    2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM SATA II Mech. HD
    Seagate ST1500DL001-9VT15L Barracuda 7200.12 1.5 TB S
    PSU
    Thermaltake Black Widow TX TR2 850W 80+ Bronze Semi-Mod ATX
    Case
    ThermalTake Level 10 GT (Black)
    Cooling
    Corsair H100 (CPU, dual 140 mm fans on radiator) + Air (2 *
    Keyboard
    Logitech G15 (gen 2)
    Mouse
    Logitech MX Master (shared)
    Internet Speed
    AT&T Lightspeed Gigabit duplex
  • Operating System
    Sabayon Linux (current, weekly updates, 5.1.x kernel)
    Manufacturer/Model
    Lenovo ThinkPad E545
    CPU
    AMD A6-5350M APU
    Motherboard
    Lenovo
    Memory
    8 GB
    Graphics card(s)
    Radeon HD (Embedded)
    Sound Card
    Conextant 20671 SmartAudio HD
    Monitor(s) Displays
    Lenovo 15" Matte
    Screen Resolution
    1680 * 1050
    Hard Drives
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SSD
    PSU
    Lenovo
    Case
    Lenovo
    Cooling
    Lenovo
    Mouse
    Logitech MX Master (shared) | Synaptics TouchPad
    Keyboard
    Lenovo
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
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