[no subject]

Again, the only way to find out what you are getting is by asking your ISP.
About their network, their policy on bandwidth sharing among the customers
connecting to the POP, and the link speed to the "cloud" after their
switching. ISP don't usually mux your T1 into their own backbone. They will
use a switch or router to combine the data traffic before putting it into
their own connection to the internet cloud. They have to pay for that
connection, and it is expensive, so they normally over subscribe that link
by signing up more user bandwidth than the actual link can provide.

Henry Ngai

----- Original Message -----
From: Dan Jones <dan jones goodway co uk>
To: <redhat-list redhat com>
Sent: Friday, September 10, 1999 8:32 AM
Subject: Re: "Huge OT" T1 line or ADSL???


> Of course DSL is shared.  ISP's couldn't afford to give 1.5Mb to every
> customers.. have you any idea just how much 45Mb of bandwidth costs?
>
> I'd estimate a 20-1 minimum contention on a average 1.5Mb DSL.  Of course
> with agressive "passive" proxying (ie forced), bandwidth is increased for
> all.  That is how the @home system is actually reasonably usable (by mass
> proxy clustering).
>
> Basically, the difference is you have 1.5Mb unresitriced to the local
> exchange I believe.. where you then start sharing with all other customers
> to the outside internet.  Basically on proxied content DSL should be
faster
> than cable, assuming a proxy is in the local exchange.   Cable modems have
> contention to the door, so aren't technically as good. (Well this is the
UK
> situation anyhow)
>
> I've been invloved with setting up DSL access in the UK (ISP end trials),
> so I know what I'm talking about here at least! (goodway is current
> contract though, and unrelated).
>
> Dan
>
> At 11:28 10/09/99 -0400, you wrote:
> >>>>>> "Dennis" == Dennis  <dennis etinc com> writes:
> >
> >    Dennis> Only because they havent been able to get enough customers
signed
> >    Dennis> up to make it bad. The physics of putting 100 1Mb/s customers
on
> >    Dennis> a 1.5Mb/s line are simply not good.
> >
> >I thought DSL was a dedicated link and that cablemodems were shared
> >bandwidth.  Are you saying tat DSL bandwidth is shared too?
> >
> >--
> >Jake Colman
> >
> >Principia Partners LLC                  Phone: (201) 946-0300
> >Harborside Financial Center               Fax: (201) 946-0320
> >902 Plaza II                           Beeper: (800) 505-2795
> >Jersey City, NJ 07311                  E-mail: colman ppllc com
> >                                       E-mail: jcolman jnc com
> >                                          web: http://www.ppllc.com
> >
> >"Every time I think I've idiot-proofed something someone comes up with a
> >better idiot"
> >
> >
> >--
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> >as the Subject.
> >
> >
> >
>
>
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