Mailinglist Archive: opensuse (1777 mails)

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Re: [opensuse] Moving to IPv6
  • From: Ilya Chernykh <neptunia@xxxxxxx>
  • Date: Mon, 13 Sep 2010 12:52:18 +0400
  • Message-id: <201009131252.18727.neptunia@xxxxxxx>
On Monday 13 September 2010 06:20:08 James Knott wrote:
Ilya Chernykh wrote:
What's the problem with stretching such cables? Currently at least 3
providers have their separate ethernet networks in my building.

Cost. In an existing building you have to run cables in conduits that
barely have room for phone cables

Oh they have, in fact my provider used the existing tube which is used
for electricity, phone and anything else. It is a large thick tube connecting
all floors.

On the other hand, other providers made separate tubes and drilled holes
for them in each floor/ceiling. I do not think it was too expensive. Just have
a drill, plastic tube and a cable.

or run new conduits on the outside of
the buildings. Laying new cables around town is also expensive.

Why do you think cable TV coaxial(or anything) is better than UTP? To
have cable TV you also have to make wiring.

UTP has a maximum usable distance of 100M. This means you'll need lots
of repeaters for lots of cables to deliver ethernet.

Yes but you connect not just one building but lots of them.

Cable TV plant has
been around for many years and the technology used works better over the
greater distances.

How can one provide Internet to a building over one coax (even if it exist?)
I even do not know if there is any cable television here. I have only ether
channels, although they expanded the number greatly last year (which may
indicate they layed cable TV cable). There is also a commercial cable TV
provider here who is notorious for advertising by telephone calls, they have
a separate net and advertise cable TV and Internet, but they for sure layed
their network themselves from start.

Overall I had telephone spam advertising calls from at least 6 or 7 broadband
providers who all claimed they connected my house. Some of them called 5-6
times or more even if I said I am not interested.

Only imagine: plain UTP ethernet cable has bandwidth 10-100 times greater
than any old wiring that could exist, even without optics and cat5

I think you have that reversed. Cable TV plant handles much greater
bandwidth than UTP and does it over much greater distances. On my shelf
beside me there's a cable modem that is capable of up to 30 MB/s. Many
of my neighbours have similar. These are all supplied by the same cable
that's also carrying hundreds of digital TV channels, including several
HD. It still carries analog TV too. All this on one single cable
serving over 300 homes.

So the cable is probably modern, no difference from Ethernet then - you still
have to lay a ney cable.

Or we are speaking about a 30-year old cable?

A UTP cable couldn't even reach the street from
my condo and still provide usable ethernet.

Which area do you mean? One building? Or a wider area?

Both. Either a building or a neighbourhood. Retrofitting cable into a
multi-unit building is a big, expensive job.

I think it is very very cheap.

Laying new cable down the
street is also expensive. Cables like that are amortized over decades.

This may be but only for mainline cables.
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