Help with my RWIN

[cholla]

mrproper;I asked VanBuren to explain some of the settings for ADSL & PPPoA to me in your other post I would like to know myself.

dlewis23;If I understand the way that MTU works is that if it is 1 byte too large the packets need to be defragmented & even if it is just 1 byte over it gets its own packet.

This is why with a MTU of 1500 you can Ping testmy.net -f -l 1472 & the packet doesn't fragment but if you Ping testmy.net -f -l 1473 it does fragment.

The ping order varies some with OS's For example yours might work better with Ping -f -l testmy.net 1472 or Ping  -f -l 1472 testmy.net .I just use testmy for an example this is with any site you can ping. The reason for 1472 is the header of 28 bytes. 1472 +28 =1500. & thats -l a small L not a 1 or I.

My ISP blocks ping but I can still show you the basics of what I am talking about.Your ping in the second .jpg will look like it usually does except the latency should be more. Mine is what blocked ping looks like but the packets don't defragment until I use 1473.

The first pic just shows the ping options I have.

The 3rd one shows packets fragmenting.

[mrproper]

the MTU is off, since your on PPPoA the MTU should be 1500

read the manual for your router/modem and see if you can set MTU manually to 1500

you show packetloss here

1    <1 ms    <1 ms    <1 ms  192.168.1.1

  2     *       43 ms     *     framed-user-32.62.151.30.ya.com [62.151.30.32]

thats between your modem/router and CO. If you use a phone extension wire, try replace it or bypass it and connect modem/router direct to your house main phone socket.

I had MTU set to 1500 vefore, but I changed because of TCPOptimizer suggestion. I have set it again to 1500. And I repeat the tests now. I don't have extensionss or something like that.

TCP options string = 020405b00103030301010402

MTU = 1496

MTU is fully optimized for broadband.

MSS = 1456

Maximum useful data in each packet = 1456, which equals MSS.

Default TCP Receive Window (RWIN) = 513968

RWIN Scaling (RFC1323) = 3 bits (scale factor of 6)

Unscaled TCP Receive Window = 64246

RWIN is a multiple of MSS

Other RWIN values that might work well with your current MTU/MSS:

512512 (MSS x 44 * scale factor of

256256 (MSS x 44 * scale factor of 4)

128128 (MSS x 44 * scale factor of 2)

64064 (MSS x 44)

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 20558.72 kbps (2569.84 KBytes/s) @ 200ms

Your TCP Window limits you to: 8223.488 kbps (1027.936 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 55 hops

TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)

----------------------------

TCP/Web100 Network Diagnostic Tool v5.3.3e

click START to begin

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 479.73Kb/s

running 10s inbound test (server to client) . . . . . . 7.41Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

click START to re-test

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 479.68Kb/s

running 10s inbound test (server to client) . . . . . . 7.44Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

-------------------------------------------

Microsoft Windows XP [Versi

[VanBuren]

I had MTU set to 1500 vefore, but I changed because of TCPOptimizer suggestion. I have set it again to 1500. And I repeat the tests now. I don't have extensionss or something like that.

Make sure to set MTU to 1500 for all adapters, and reboot your PC after that...

Do I have to modify any settings in Cablenut with MTU=1500?

Thank you again.

the cablenut settings i gave you, is made for a 1500 MTU, but your router or NIC adapter is forced to 1496

VanBuren

[mrproper]

Vanburen, I forced MTU ** in the router** to 1496 because TCPOptimizer told me that it was the optimum value. Now I have changed again the value ** in the router ** and set to 1500, and rebooted PC. But where else do you want me to change the value?

[VanBuren]

Vanburen, I forced MTU ** in the router** to 1496 because TCPOptimizer told me that it was the optimum value. Now I have changed again the value ** in the router ** and set to 1500, and rebooted PC. But where else do you want me to change the value?

open TCP Optimizer, and click Custom, change MTU to 1500

scroll in the list of adapters (see the arrow) so all adapters is set to 1500

click apply and reboot your PC

make a new speed test both against Swizz NDT test and testmy.net, also a test here https://www.speedguide.net:8080/

post results

VanBuren

[cholla]

Hey VanBuren;I know your helping mrproper here but how about a lesson on :

Hey VanBuren:Time for a tutorial for me.

The MTU for ADSL with PPPoA is supposed to be 1500 like cable broadband?

The MTU for DSL & possibly ADSL with PPPoE is supposed to be 1492 ?

If I have those correct now please explain why.

mrproper's MTU & MSS have tested off in this & the other post at least with the TCPIP analyzer test.They show MTU1496 & MSS 1456.

I wanted to ask is the TCPIP analyzer test At speedguide.net any good for Windows XP It seems to be more for 9X OS's. The RWIN it reads seems to be MSS based instead of AFD parameter based.

mrproper : Theres no problem with seeking more help & VanBuren knows a lot about these settings.That's why I'm asking him to explain this better to me so I can help someone better the next time.

why the ADSL with

[dlewis23]

The MTU for ADSL with PPPoA is supposed to be 1500 like cable broadband?

i dont know about that cholla, ive always been told that for any ADSL connection the MTU is suppose to be 1492 no matter if its PPPoA, or PPPoE.

[VanBuren]

Hey VanBuren;I know your helping mrproper here but how about a lesson on :why the ADSL with

all i know is that PPPoA using 1500 as MTU instead of 1492 for PPPoE

thats the most common values.

but sometimes ISP

[VanBuren]

try this aswell

A: Download DRTCP021.zip from Here to your desktop.

For MTU, using the drop-down menu in DRTCP, set your NIC (Ethernet adapter) to 1500. Tab to Apply and click it, Exit, re-boot, re-test, re-post.

If you use PPPoA, follow the same directions, but use your dial-up adapter instead.

quote from http://www.dslreports.com/faq/tweaks/4.+MTU#708

VanBuren

[cholla]

The MTU for ADSL with PPPoA is supposed to be 1500 like cable broadband?

The MTU for DSL & possibly ADSL with PPPoE is supposed to be 1492 ?

dlewis23;Those were questions I was asking VanBuren .He answered that.I don't know why  that is what the common value is yet.Or even that it was until Van answered.I agree with you I always saw the 1492 as the setting for ADSL & other DSL It was supposed to have something to do with the header Like the -28 for checking the ping for a MTU of 1500 .Or the

-40 from the MTU for the MSS value.I read somewhere the exact  reason for the 1492 but I don't remember it right now.I will see if I can find something on it & post it.Just remember I have dial-up & all this is just what I'm still learning.

[mrproper]

open TCP Optimizer, and click Custom, change MTU to 1500

scroll in the list of adapters (see the arrow) so all adapters is set to 1500

click apply and reboot your PC

make a new speed test both against Swizz NDT test and testmy.net, also a test here https://www.speedguide.net:8080/

post results

VanBuren

First of all, I have attache some .jpg files with some screens.

... Well, checked MTU in my [glow=red,2,300]router [/glow] (1500).

... Changed MTU to 1500 in [glow=red,2,300]TCPOptimizer [/glow]: chosen "Intel ® PRO/1000 PM Network Connection" in "Network Adapter Selection". I have two more adapters. I have twice "Network Adapter 1394", but I haven't changed anything of them. What are these adapters? Perhaps a capturer video graph? (I think I have one).

... Results of  SpeedGuide.net [glow=red,2,300]TCP/IP Analyzer[/glow]:

MTU = 1500

MTU is fully optimized for broadband.

MSS = 1460

Maximum useful data in each packet = 1460, which equals MSS.

Default TCP Receive Window (RWIN) = 513920

RWIN Scaling (RFC1323) = 3 bits (scale factor of 6)

Unscaled TCP Receive Window = 64240

RWIN is a multiple of MSS

Other RWIN values that might work well with your current MTU/MSS:

513920 (MSS x 44 * scale factor of <-- current value

256960 (MSS x 44 * scale factor of 4)

128480 (MSS x 44 * scale factor of 2)

64240 (MSS x 44)

bandwidth * delay product (Note this is not a speed test):

Your TCP Window limits you to: 20556.8 kbps (2569.6 KBytes/s) @ 200ms

Your TCP Window limits you to: 8222.72 kbps (1027.84 KBytes/s) @ 500ms

MTU Discovery (RFC1191) = ON

Time to live left = 54 hops

TTL value is ok.

Timestamps (RFC1323) = OFF

Selective Acknowledgements (RFC2018) = ON

IP type of service field (RFC1349) = 00000000 (0)

... Results of speed tests against http://cemp1.switch.ch/network/performance/web100/tcpbw100.html ([glow=red,2,300]SWITCH NDT server[/glow]) (twice):

TCP/Web100 Network Diagnostic Tool v5.3.3e

click START to begin

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 473.20Kb/s

running 10s inbound test (server to client) . . . . . . 6.95Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

click START to re-test

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 479.68Kb/s

running 10s inbound test (server to client) . . . . . . 7.13Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

... Results of speed tests against [glow=red,2,300]testmy.net[/glow] (twice):

:::.. Download Stats ..:::

Download Connection is:: 3618 Kbps about 3.62 Mbps (tested with 5983 kB)

Download Speed is:: 442 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/11 - 12:02pm

Bottom Line:: 63X faster than 56K 1MB Download in 2.32 sec

Tested from a 5983 kB file and took 13.546 seconds to complete

Download Diagnosis:: May need help : running at only 58.19 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-BZWHA6KTI

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) [!]

:::.. Download Stats ..:::

Download Connection is:: 2854 Kbps about 2.85 Mbps (tested with 5983 kB)

Download Speed is:: 348 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/11 - 12:03pm

Bottom Line:: 50X faster than 56K 1MB Download in 2.94 sec

Tested from a 5983 kB file and took 17.172 seconds to complete

Download Diagnosis:: May need help : running at only 55.99 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-YO9P4TC27

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) [!]

Well, that's all you asked me, Vanburen.

[VanBuren]

great, now the MTU is where it suppose to be

but speed could be better, congestion seems to be a problem, so you could try lower the RWIN a bit.

try this, open cablenut

change TcpWindowSize and GlobalMaxTcpWindowsize to 128480

click save to registry and reboot

now test speed again against Swizz and testmy.net

also test speed against my mirror

http://www.testmy.net/tools/test/d_load.php?&st=st&tt=1&ta=1&top=mirror-VanBuren&out_src=20MB

VanBuren

[mrproper]

speed could be better, congestion seems to be a problem, so you could try lower the RWIN a bit.

try this, open cablenut

change TcpWindowSize and GlobalMaxTcpWindowsize to 128480

click save to registry and reboot

now test speed again against Swizz and testmy.net

also test speed against my mirror

http://www.testmy.net/tools/test/d_load.php?&st=st&tt=1&ta=1&top=mirror-VanBuren&out_src=20MB

VanBuren

... [glow=red,2,300]Test results BEFORE doing any change in Cablenut[/glow] (twice each):

SWITCH NDT Server:

TCP/Web100 Network Diagnostic Tool v5.3.3e

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 473.95Kb/s

running 10s inbound test (server to client) . . . . . . 7.49Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 481.21Kb/s

running 10s inbound test (server to client) . . . . . . 7.49Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

Testmy.net:

:::.. Download Stats ..:::

Download Connection is:: 3669 Kbps about 3.67 Mbps (tested with 5983 kB)

Download Speed is:: 448 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/12 - 1:29am

Bottom Line:: 64X faster than 56K 1MB Download in 2.29 sec

Tested from a 5983 kB file and took 13.359 seconds to complete

Download Diagnosis:: 90% + Okay : running at 91 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-DF0J97EQN

:::.. Download Stats ..:::

Download Connection is:: 5766 Kbps about 5.77 Mbps (tested with 5983 kB)

Download Speed is:: 704 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/12 - 1:31am

Bottom Line:: 101X faster than 56K 1MB Download in 1.45 sec

Tested from a 5983 kB file and took 8.5 seconds to complete

Download Diagnosis:: Awesome! 20% + : 43.29 % faster than the average for host (157.215)

D-Validation Link:: https://testmy.net/stats/id-NKE73M1YC

Your mirror:

:::.. Download Stats ..:::

Download Connection is:: 2732 Kbps about 2.73 Mbps (tested with 20972 kB)

Download Speed is:: 333 kB/s

Tested From:: http://hem.bredband.net

Test Time:: 2006/08/12 - 1:35am

Bottom Line:: 48X faster than 56K 1MB Download in 3.08 sec

Tested from a 20972 kB file and took 62.875 seconds to complete

Download Diagnosis:: May need help : running at only 70.41 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-I2YQ1BFTL

:::.. Download Stats ..:::

Download Connection is:: 2600 Kbps about 2.6 Mbps (tested with 20972 kB)

Download Speed is:: 317 kB/s

Tested From:: http://hem.bredband.net

Test Time:: 2006/08/12 - 1:37am

Bottom Line:: 45X faster than 56K 1MB Download in 3.23 sec

Tested from a 20972 kB file and took 66.078 seconds to complete

Download Diagnosis:: May need help : running at only 69.3 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-RHGZ8FY3J

... [glow=red,2,300]Test results AFTER changes in Cablenut[/glow] (twice each):

SWITCH NDT Server:

TCP/Web100 Network Diagnostic Tool v5.3.3e

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 474.00Kb/s

running 10s inbound test (server to client) . . . . . . 7.67Mb/s

Your PC is connected to a Cable/DSL modem

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 480.45Kb/s

running 10s inbound test (server to client) . . . . . . 7.23Mb/s

Your PC is connected to a Cable/DSL modem

Testmy.net:

:::.. Download Stats ..:::

Download Connection is:: 3088 Kbps about 3.09 Mbps (tested with 5983 kB)

Download Speed is:: 377 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/12 - 2:37am

Bottom Line:: 54X faster than 56K 1MB Download in 2.72 sec

Tested from a 5983 kB file and took 15.875 seconds to complete

Download Diagnosis:: 90% + Okay : running at 90.24 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-KI6XP2M13

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) [!]

:::.. Download Stats ..:::

Download Connection is:: 4351 Kbps about 4.35 Mbps (tested with 5983 kB)

Download Speed is:: 531 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/12 - 2:37am

Bottom Line:: 76X faster than 56K 1MB Download in 1.93 sec

Tested from a 5983 kB file and took 11.266 seconds to complete

Download Diagnosis:: Awesome! 20% + : 25.03 % faster than the average for host (157.215)

D-Validation Link:: https://testmy.net/stats/id-5LWCSQ0UB

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) [!]

Your mirror:

:::.. Download Stats ..:::

Download Connection is:: 2654 Kbps about 2.65 Mbps (tested with 20972 kB)

Download Speed is:: 324 kB/s

Tested From:: http://hem.bredband.net

Test Time:: 2006/08/12 - 2:39am

Bottom Line:: 46X faster than 56K 1MB Download in 3.16 sec

Tested from a 20972 kB file and took 64.734 seconds to complete

Download Diagnosis:: May need help : running at only 77.35 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-8RMBZ9O3G

:::.. Download Stats ..:::

Download Connection is:: 2723 Kbps about 2.72 Mbps (tested with 20972 kB)

Download Speed is:: 332 kB/s

Tested From:: http://hem.bredband.net

Test Time:: 2006/08/12 - 2:41am

Bottom Line:: 47X faster than 56K 1MB Download in 3.08 sec

Tested from a 20972 kB file and took 63.094 seconds to complete

Download Diagnosis:: May need help : running at only 80.28 % of your hosts average (157.215)

D-Validation Link:: https://testmy.net/stats/id-8Q13R7P5T

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322) [!]

Well, those are the results. What is the new step, Vanburen?

[VanBuren]

Well, those are the results. What is the new step, Vanburen?

I don't think there is something else to do, your MTU is correct, the settings is fine, you could try increasing RWIN, but it might backfire when congestion starts ticking in... As larger RWIN you have, the more speed will suffer when a packet is lost.

With DSL, speed depends on how far away from CO you are, and the quality on the phonelines. That means you ISP cap modem at a certain rate eg 10 Mbps, but distance and quality on phoneline might only hold 8 Mbps max. Thats part of the reason ISP

[mrproper]

I don't think there is something else to do, your MTU is correct, the settings is fine, you could try increasing RWIN, but it might backfire when congestion starts ticking in... As larger RWIN you have, the more speed will suffer when a packet is lost.

With DSL, speed depends on how far away from CO you are, and the quality on the phonelines. That means you ISP cap modem at a certain rate eg 10 Mbps, but distance and quality on phoneline might only hold 8 Mbps max. Thats part of the reason ISP

[dlewis23]

My ISP advertises download speeds "up to" 20 Mb, and because I am a certain distance from the CO and the quality of my phone line, my router gives me only 9 Mb. But I think that a download speed of 3 Mb is rather bad. I really thnik that this can be improved. I don't know how to because I don't know very much about registry settings, etc.

If you think everything is ok, could you give me al least some advise and values to modify?. I would do tests and compare results on my own.

Thank you, Vanburen.

like he said there isnt much more that can be done, you may just simply not be able to get faster then what you are at now. you could be on the outer edge of DSL's distance. If your anywere over 10,000 feet with ADSL2 your not going to go very fast maby 5mbps max.

[mrproper]

like he said there isnt much more that can be done, you may just simply not be able to get faster then what you are at now. you could be on the outer edge of DSL's distance. If your anywere over 10,000 feet with ADSL2 your not going to go very fast maby 5Mbps max.

dlewis23, if I reached 5 Mbps ** regularly **...... I would be very happy, but you can see the results of my speed tests, all made at different hours and different servers.

I think that "something" could be done, couldn't it?

Kindest regards and thank you too and all the people who is helping me !!

[dlewis23]

dlewis23, if I reached 5 Mbps ** regularly **...... I would be very happy, but you can see the results of my speed tests, all made at different hours and different servers.

I think that "something" could be done, couldn't it?

Kindest regards and thank you too and all the people who is helping me !!

honestly i dont know what more can be done. have you called your ISP and asked for a tech to come out and take a look and see if anything is wrong?

[cholla]

mrproper;Since VanBuren was helping I turned it over to him.He's very good.I'm not sure what settings you need to make in Cablenut .I looked at the screen shot of yours & it didn't have most of the values filled in.Make sure VanBuren takes a look at this.I think this way it may have even removed some registry setting from your OS.

I'm sure this one should not be blank" DefaultReceiveWindow"

I will see if I can Find a couple of things.for you to look at.

The text files I posted before explain a lot of the Cablenut settings.These are from Microsoft not Cablenut .But they explain what the settings do.To some degree anyway.

This is a link to screen shots of some testmy members Cablenut settings including VanBurens.They might not be for your connection but should show you what the Cablenut settings display should look like Full of settings.If you can't see the settings click on the blue at the bottom of the picture & open it to your image veiwer where you can magnify it.

http://www.testmy.net/forum/index.php?topic=3274.msg30972#msg30972

Also these are screen shots from the cablenut analyzer page.I got the information from your posts & used those.The latency I got from your ping.

These are for the 3 DSL types that were available.They are probably simular but maybe one will work for you.

[VanBuren]

My ISP advertises download speeds "up to" 20 Mb, and because I am a certain distance from the CO and the quality of my phone line, my router gives me only 9 Mb. But I think that a download speed of 3 Mb is rather bad. I really thnik that this can be improved. I don't know how to because I don't know very much about registry settings, etc.

If you think everything is ok, could you give me al least some advise and values to modify?. I would do tests and compare results on my own.

Thank you, Vanburen.

you could try this page http://www.j79zlr.com/cablenutXP2k.php

and try diffrent settings, just make sure to use 1500 as MTU

latency is usually between 150 and 300 ms, try whats best for you.

good luck

VanBuren

[mrproper]

mrproper;Since VanBuren was helping I turned it over to him.He's very good.I'm not sure what settings you need to make in Cablenut .I looked at the screen shot of yours & it didn't have most of the values filled in.Make sure VanBuren takes a look at this.I think this way it may have even removed some registry setting from your OS.

I'm sure this one should not be blank" DefaultReceiveWindow"

I will see if I can Find a couple of things.for you to look at.

The text files I posted before explain a lot of the Cablenut settings.These are from Microsoft not Cablenut .But they explain what the settings do.To some degree anyway.

This is a link to screen shots of some testmy members Cablenut settings including VanBurens.They might not be for your connection but should show you what the Cablenut settings display should look like Full of settings.If you can't see the settings click on the blue at the bottom of the picture & open it to your image veiwer where you can magnify it.

http://www.testmy.net/forum/index.php?topic=3274.msg30972#msg30972

Also these are screen shots from the cablenut analyzer page.I got the information from your posts & used those.The latency I got from your ping.

These are for the 3 DSL types that were available.They are probably simular but maybe one will work for you.

Thanks cholla for your help, but I think that although Vanburen was helping me, you could have continued helping me too. I went to him because he is the author of Cablenut, and I suppose that he is the best to known his own software, but I have never denied your help. (Forgive my english. It's not very good, but I think you know what I mean). 

I attach again my current Cablenut screen. And you are right: there are a lot blanks, but it's the .css file that Cablenut gave me, except two parameters that he told me to change. I don't know if it's normal or not but Vanburen gave it to me. I suppose it's ok.

The screenshots you show me (calculated in http://www.j79zlr.com/cablenutXP2k.php) is what you or dlewis23 told me in the original post, isn't it? But my problem was how to calculate the "latency". TCPOptimizer program has a tool to calculate it and doesn't use any file to download. The explained way in j79zlr.com involves to calculate the latency running a tracert while downloading a large file.

So my questions are:

1) Which is the correct way to calculate it? TCPOptimizer or j79zlr.com?

The first one gives me a latency between 490 and 500:

Pinging [204.127.135.135] with 32 bytes ->bytes=32 time=172ms TTL=46

Pinging [204.127.135.135] with 32 bytes ->bytes=32 time=211ms TTL=46

Pinging [204.127.135.135] with 32 bytes ->bytes=32 time=354ms TTL=46

Pinging [207.155.248.41] with 32 bytes ->bytes=32 time=229ms TTL=241

Pinging [207.155.248.41] with 32 bytes ->bytes=32 time=307ms TTL=241

Pinging [207.155.248.41] with 32 bytes ->bytes=32 time=306ms TTL=241

Pinging [72.14.221.99] with 32 bytes ->bytes=32 time=118ms TTL=241

Pinging [72.14.221.99] with 32 bytes ->bytes=32 time=90ms TTL=241

Pinging [72.14.221.99] with 32 bytes ->bytes=32 time=89ms TTL=241

Pinging [193.10.252.19] with 32 bytes ->bytes=32 time=238ms TTL=239

Pinging [193.10.252.19] with 32 bytes ->bytes=32 time=143ms TTL=239

Pinging [193.10.252.19] with 32 bytes ->bytes=32 time=208ms TTL=239

Pinging [63.217.30.70] with 32 bytes ->bytes=32 time=175ms TTL=52

Pinging [63.217.30.70] with 32 bytes ->bytes=32 time=177ms TTL=52

Pinging [63.217.30.70] with 32 bytes ->bytes=32 time=198ms TTL=52

Pinging [67.18.179.85] with 32 bytes ->bytes=32 time=238ms TTL=51

Pinging [67.18.179.85] with 32 bytes ->bytes=32 time=228ms TTL=51

Pinging [67.18.179.85] with 32 bytes ->bytes=32 time=253ms TTL=51

Pinging [218.32.192.112] with 32 bytes ->bytes=32 time=473ms TTL=45

Pinging [218.32.192.112] with 32 bytes ->bytes=32 time=474ms TTL=45

Pinging [218.32.192.112] with 32 bytes ->bytes=32 time=502ms TTL=45

Ping statistics for above hosts:

  Packets: Sent = 21, Received = 21, Lost = 0 (0% loss)

Approximate round trip times (RTT) in milli-seconds:

  Minimum = 89ms, Maximum = [glow=red,2,300] 502ms[/glow], Average =  246ms

The second one gives me a latency of 303 ms (the page says between 150 and 300):

10  236 ms  266 ms  224 ms  The-Planet.ge-4-3-0.ar1.DAL2.gblx.net [64.210.104.58]

11  237 ms  257 ms  240 ms  vl32.dsr02.dllstx3.theplanet.com [70.85.127.62]

12  244 ms  253 ms  253 ms  vl41.dsr01.dllstx4.theplanet.com [70.85.127.83]

13  242 ms  275 ms  255 ms  gi1-0-1.car17.dllstx4.theplanet.com [67.18.116.69]

14  280 ms  253 ms  [glow=red,2,300]303 ms  [/glow] 55.b3.1243.static.theplanet.com [67.18.179.85]

Traza completa.

As you can see it's not the same (approximately 500 vs 300).

2) When I do a tracert, against which server or page? Is it the same? I live in Spain. Should I choose a spanish server to tracert and/or a file to download from a spanish server? The example above is made against testmy.net and the file is from ftp://ftp.newaol.com/aol6.0/179902/setupaol60.exe.

Thank you very very much!!

[cholla]

mrproper;This was inone of your posts I used the  M ximo = 252ms for the latency in the Cablenut calculator.

Haciendo ping a testmy.net [67.18.179.85] con 32 bytes de datos:

Respuesta desde 67.18.179.85: bytes=32 tiempo=252ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=205ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=205ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=205ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=204ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=205ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=207ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=204ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=204ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=206ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=204ms TTL=51

Respuesta desde 67.18.179.85: bytes=32 tiempo=205ms TTL=51

Estad

[mrproper]

If you looked at the pins I did & put in screen shots of when me & dlewis23 were discossing ping in this topic

You will notice I did: ping testmy.net -f -l 1472 If you ping with this it will give you the maximum latency to the site you choose to ping.Just substitute anoter site for testmy if you want to.Do this to 10 different sites & take the average of all of them.

then use that average in the cablenut calculator.

I have made a tracert against google.es ten times and have obtained an average latency of 178 ms (while downloading the large file linked in http://www.j79zlr.com/cablenutXP2k.php).

I have made a tracert against testmy.net ten times and have obtained an average latency of 263 ms. (while downloading the same file).

1) Is it correct doing it while downloading a file or not? I don't understand how affects it to latency (I suppose it gives you a worse value of latency).

2) Latency = (178+263)/2=220,5 ms, is it ok?

[mrproper]

Cholla, for these values (Down=9000, latency=220), I attach you the results in CableNut and TCPOptimizer.

Have a look at them and suggest me any change.

I paste you the result of speed tests (made twice each):

[glow=red,2,300]Testmy.net[/glow]

:::.. Download Stats ..:::

Download Connection is:: 2867 Kbps about 2.87 Mbps (tested with 2992 kB)

Download Speed is:: 350 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/12 - 7:00pm

Bottom Line:: 50X faster than 56K 1MB Download in 2.93 sec

Tested from a 2992 kB file and took 8.547 seconds to complete

Download Diagnosis:: 90% + Okay : running at 90.53 % of your hosts average (184.200)

D-Validation Link:: https://testmy.net/stats/id-150C47SEP

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322) [!]

:::.. Download Stats ..:::

Download Connection is:: 3961 Kbps about 3.96 Mbps (tested with 5983 kB)

Download Speed is:: 484 kB/s

Tested From:: https://testmy.net/ (Server 1)

Test Time:: 2006/08/12 - 7:06pm

Bottom Line:: 69X faster than 56K 1MB Download in 2.12 sec

Tested from a 5983 kB file and took 12.375 seconds to complete

Download Diagnosis:: Awesome! 20% + : 25.75 % faster than the average for host (184.200)

D-Validation Link:: https://testmy.net/stats/id-75HRVNILP

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322) [!]

[glow=red,2,300]Vanburen mirror[/glow] (20 Mb file):

:::.. Download Stats ..:::

Download Connection is:: 2739 Kbps about 2.74 Mbps (tested with 20972 kB)

Download Speed is:: 334 kB/s

Tested From:: http://hem.bredband.net

Test Time:: 2006/08/12 - 7:03pm

Bottom Line:: 48X faster than 56K 1MB Download in 3.07 sec

Tested from a 20972 kB file and took 62.734 seconds to complete

Download Diagnosis:: 90% + Okay : running at 91.67 % of your hosts average (184.200)

D-Validation Link:: https://testmy.net/stats/id-2XUPTWDM8

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322) [!]

:::.. Download Stats ..:::

Download Connection is:: 2702 Kbps about 2.7 Mbps (tested with 20972 kB)

Download Speed is:: 330 kB/s

Tested From:: http://hem.bredband.net

Test Time:: 2006/08/12 - 7:01pm

Bottom Line:: 47X faster than 56K 1MB Download in 3.1 sec

Tested from a 20972 kB file and took 63.594 seconds to complete

Download Diagnosis:: May need help : running at only 88.56 % of your hosts average (184.200)

D-Validation Link:: https://testmy.net/stats/id-5CVKWYNE0

User Agent:: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Maxthon; .NET CLR 1.1.4322) [!]

[glow=red,2,300]SWITCH NDT Server[/glow] (unique test that gives me good results...)

TCP/Web100 Network Diagnostic Tool v5.3.3e

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 472.50Kb/s

running 10s inbound test (server to client) . . . . . . 7.37Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

Checking for Middleboxes . . . . . . . . . . . . . . . . . .  Done

running 10s outbound test (client to server) . . . . . 479.73Kb/s

running 10s inbound test (server to client) . . . . . . 7.41Mb/s

Your PC is connected to a Cable/DSL modem

Information: Other network traffic is congesting the link

[VanBuren]

calculating latency is very hard, it wont be very accurate. So the best way is to test diffrent values..

this is a old guide how to calculate http://www.luwigie.com/tweaks/FAQxp2000.pdf

VanBuren