Hi jdd, Not only. I usually use it to make a PPPoE connection to my ISP directly. It has some advantages. The modules sets up a ppp connection using the PPPoE plugin automaticaly. I can do it manually... but would prefer to do it with YaST, as usual :) Regards, Rui On Fri, Dec 20, 2013 at 6:54 PM, jdd <jdd@dodin.org> wrote:

Le 20/12/2013 18:56, Rui Santos a écrit :

...

Hi all,

I've been trying to add a new ADSL connection through YaST DSL module.

only needed if you use an usb dsl modem

jdd

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Well, I can write them myself, as I found the need for it after a bit of research. As you know, ADSL lines have a rather small uplink. 1Mbit/s maximum (Can be more with some standards but, let's just assume this) I often found the need to use such a link in places where there were a significant number of users, and either the company policy was not to limit users/services or, just wouldn't care. In either case, I found that for the uplink to be usable, I had to find out which services were more critical, intermediate and "trash". With this information, I would now be able to setup a simple traffic shaping to control which services have priority... The problem of this approach, related to what we are discussing, is that when using a lot of those ADSL modem supplied by the ISP's, those devices tend to apply a cache of their own. Now assume that you have a 512Kbits/s uplink and you have a constant stream of data of 1Mbits/s, during 5 seconds. The ADSL router will fill up it's cache almost immediately. Now assume that, on second 5 you get a critical priority packet. In a lot of circumstances, the ADLS router/modem will take several seconds to relay your critical packet. This happens, among other things, because most of the time, your router/modem is not aware of there critical packets, defined by you, combined with somewhat larger caches than 512Kbits. Now, most of those ISP modes/routers do support PPPoE bridging. With this feature you can setup up a Linux machine to act as a router, instructing pppd to initiate the connection itself (using PPPoE plugin from pppd). This way you have a constant control over every packet. For example, you can have 2Mbits of data standing by and relay a high priority packet (almost) immediately. Hope I was made myself clear :) Regards, Rui On Mon, Dec 23, 2013 at 12:07 PM, jdd <jdd@dodin.org> wrote:

Le 23/12/2013 12:25, Rui Santos a écrit :

...

Hi jdd,

Not only. I usually use it to make a PPPoE connection to my ISP directly. It has some advantages. The modules sets up a ppp connection using the PPPoE plugin automaticaly. I can do it manually... but would prefer to do it with YaST, as usual :)

sure. never used it since the early adsl days (not even sure I ever needed it)

som link to a page explaining the advatages?

thanks

jdd

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