How Do DSL Companies Limit Speeds to Narrow Ranges?

kelticwizard · 8th April 2007, 11:59 PM

Taking a look at some DSL plans, I see that different plans have different upload and download speeds.

How do they do that? I know that speeds vary anyway, how do they make sure that each customer can only go so fast or so slow?

A not-too-technical explanation would be appreciated.

Geek · 9th April 2007, 12:10 AM

Bandwidth throttling is easy to do.

How they do it for each customer is each computer on their network can be identified by I.P. or MAC address. Their equipment then compares internet requests from those addresses with a list of who gets throttled back.

Cheers!

kelticwizard · 9th April 2007, 12:49 AM

The speeds vary within each plan.

Technically, how is the bandwidth throttling accomplished?

Do they do it proportionately, such as one customer is on the 1/4 full bandwidth plan, the other customer is on the onehalf bandwidth plan, etc?

Because within each plan, the speeds vary. If everyone always got one speed, I can see a specific speed being assigned per plan. But if the network itself varies as to what it can deliver, I wonder how they divide it up.

Geek · 9th April 2007, 02:44 AM

They can do it either with software, which just gives lower plans less of a share of the traffic. This can be done in the load balancer, a device that makes sure no one customer or piece of equipment is being a hog, or it could be done at the DSL hub, which is within 4Km of each subscriber.

They could offer too, a different protocol for each plan. More detailed info on the plethora of DSL protocols here:
http://whatis.techtarget.com/definit...213915,00.html

Hope this helps

jacquesl · 9th May 2007, 09:20 AM

kelticwizard, did you found your software?

kelticwizard · 9th May 2007, 01:34 PM

jacques:

I'm not certain what you mean by the question. I just wanted to know how the telephone company limits the bandwidth on individual DSL lines. I did not anticipate getting any software for this, unless it is the software which comes with the router.

Could it be some software for some other thing I might have mentioned, that you are referring to?

jacquesl · 9th May 2007, 01:55 PM

Quote: “Technically, how is the bandwidth throttling accomplished?”

Oh sorry, I though you wanted to start your own ISP and / or create ISP accounts for your customers, and that also has to do mainly with bandwidth controlling and user management

8th April 2007, 11:59 PM	#1
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	How Do DSL Companies Limit Speeds to Narrow Ranges? Taking a look at some DSL plans, I see that different plans have different upload and download speeds. How do they do that? I know that speeds vary anyway, how do they make sure that each customer can only go so fast or so slow? A not-too-technical explanation would be appreciated. __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

9th April 2007, 12:49 AM	#3
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	The speeds vary within each plan. Technically, how is the bandwidth throttling accomplished? Do they do it proportionately, such as one customer is on the 1/4 full bandwidth plan, the other customer is on the onehalf bandwidth plan, etc? Because within each plan, the speeds vary. If everyone always got one speed, I can see a specific speed being assigned per plan. But if the network itself varies as to what it can deliver, I wonder how they divide it up. __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

9th May 2007, 01:34 PM	#6
kelticwizard diyAudio Member Join Date: Sep 2001 Location: Connecticut, The Nutmeg State	jacques: I'm not certain what you mean by the question. I just wanted to know how the telephone company limits the bandwidth on individual DSL lines. I did not anticipate getting any software for this, unless it is the software which comes with the router. Could it be some software for some other thing I might have mentioned, that you are referring to? __________________ "A friend will help you move. A really good friend will help you move a body." -Anonymous

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9th April 2007, 12:10 AM	#2
Geek diyAudio Member Join Date: Sep 2004	Bandwidth throttling is easy to do. How they do it for each customer is each computer on their network can be identified by I.P. or MAC address. Their equipment then compares internet requests from those addresses with a list of who gets throttled back. Cheers!

9th April 2007, 02:44 AM	#4
Geek diyAudio Member Join Date: Sep 2004	They can do it either with software, which just gives lower plans less of a share of the traffic. This can be done in the load balancer, a device that makes sure no one customer or piece of equipment is being a hog, or it could be done at the DSL hub, which is within 4Km of each subscriber. They could offer too, a different protocol for each plan. More detailed info on the plethora of DSL protocols here: http://whatis.techtarget.com/definit...213915,00.html Hope this helps

9th May 2007, 09:20 AM	#5
jacquesl diyAudio Member Join Date: Feb 2005 Location: Lego Land	kelticwizard, did you found your software?

9th May 2007, 01:55 PM	#7
jacquesl diyAudio Member Join Date: Feb 2005 Location: Lego Land	Quote: “Technically, how is the bandwidth throttling accomplished?” Oh sorry, I though you wanted to start your own ISP and / or create ISP accounts for your customers, and that also has to do mainly with bandwidth controlling and user management

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