Slow speeds on cable modem

[PmelRules]

I have 4 mb down from cable provider, only getting 2.3mb down on speed test, my buddy brought his laptop over and he got 4 mb down, any suggestions on what is wrong with my pc.

 

[JackMDS]

Download DrTCP: <a target=new class=ftalternatingbarlinklarge href="http://www.dslre
ports.com/front/DRTCP021.exe">http://www.dslreports.com/front/DRTCP021.exe</a>

Run the program, it will show the current settings of TCP/IP parameters. Write them down.

You can change any variable that you want, click Apply, and reboot the computer, if no good; you can always change to your original values.

Start with:

MaxMTU - DSL =1492 - Cable=1500 - ISDN=1322 - DialUp=576

Tcp Receive - 256960 (This is the Variable to play with).

Window Scaling - Yes

Time Stamping - No

Selective Acks - Yes

Path MTU Discovery - Yes.

Black Hole - NO

Max Duplicate - 2

TTL - 64

Notice it said above Start with

These settings are not written in "stone" there is variability depending on the computer other setting. So try few setting and measure your Download for each setting.

In addition, in case a person has a Router the Router's MTU if set differently can affect the general MTU.

Link: www.ezlan.net - Measuring the "Speed" of Internet Connection.

 

[AFB]

Have a router ?

 

[volrath]

You could also try broadbandreports.com. They have things that test if your settings are right, as well as forums with experts on this.

 

[howdyduty]

Suspect your buddy's laptop has a more optimal DefaultRecieveWindow. Some folks need to tweak to get better downloads. Set yours to 64240 or larger and it should help. Its a registry setting in windows. Some folks have settings optimized for dialup modems and are missing out on the speed. Check out www.speedguide.net

 

[Amused]

DefaultRecieveWindow is the key. Jack's suggestions are exactly what you need to try. DrTCP is a great little app that is simple to use.

I have noticed that if you install XP or 2K on a system with a modem installed, it will default to a far-too-small value on this setting. But if you install XP on a system without a modem and WITH a network card, it will default at a much higher, more acceptable value for broadband.

Anyone else notice this as well?