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1. Tweaking is a science. It can be simple or it can be painful.

2. Do a speed test from »speedtest-nycmny.nycmny.sbcgloba···ge2.html (the test should take no longer than a minute, if it doesn't seem to do anything, refresh the page and it should run.)

3. Note your initial results of this speed test.

4. Determine if you are on an RT (remote terminal) or CO (central office) connection. Continue to read on and then see #13 below. To be sure about what type of connection you have, you can ask MrFixitCT for a line test (you will need to IM him your DSL telephone number).

5. Go to /tweaks (you need java installed).

6. Run the tweak test.

7. When it finishes, enter the values (dsl, SPEED (1500 or 3008), OS, Some type of PPPoE) and click recommend.

8. It will give you a report.

9. You want to look at a few items here.

10. In the center column you want to look at MTU. This should be 1492.

11. In the center column you want to look at transfer efficiency. This should be above 95%.

12. In the left column you want to look at RWIN (this is probably set to 65535).

13. If it is set to 65535 and you have 100% efficiency you are most likely CO connected.

14. If you do not see the MTU at 1492 or you have crappy transfer efficiency (<95%) YOU NEED TO TWEAK.

Tweaking-

1. Go to /drtcp

2. Install DR. TCP (the .exe) and run it.

3. Pick your network card (on the bottom).

4. For RWIN on RT connection enter in 13068 (for CO enter 37752 or 65535).

5. For MaxMTU enter in 1492.

6. Everything else should be set to ‘default’.

7. Reboot PC!

8. Run the tweak test again from /tweaks

9. You should see that the RWIN has changed and the MTU is changed. You should also see your transfer efficiency above 95%.

10. Test your speed again at »speedtest-nycmny.nycmny.sbcgloba···ge2.html and note the results. You should have speeds around 1250/330 or 2530/435.

11. Do a few speed tests as sometimes the net gets busy.

If you have a router, you should also look at configuration and set the MTU to 1492 as well.

The best one is always right.

If you still have slow speeds please post a link of your tweak test, speed test, and line quality test in the forum. Someone will help you out.

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by meskinct
last modified: 2006-05-12 17:34:05