Re: Very fast IP, no ATM...

[Petri Helenius <]

Peter Lothberg writes:
 > 
 > I don't undertsand, if ATM did create bandwith it would be great, but
 > it does not. If ATM was needed to make packets move it would be great,
 > but it's not.

One issue on the above is that the ATM pipes have the history of going
a step faster than the wide area IP pipes at the same time. Like we're
now at STM4 for ATM and at STM1 for IP. Though this does not help too
much with the current routing gear, but at least you can feed your
backbone with a stack of STM1 ATM interfaces and actually move bits at
aggregate rates that go STM4 if not faster (I can put multiple STM4
pipes in parallel in the backbone).
 > 
 > It seems to be usable as aa replacement for X.25 and Frame-Relay, for
 > those who buy bandwith and routers and build private networks, but,
 > for a public infrastructure, I don't think so.
 >
A close look at the Internet market shows a large set of products
aimed, in a way or another, for 'secure transmission of data over the
Internet'. Either terminal-connections, like SSH, or VPN's. I see that
as a clear demand for VPN services, at least for the area where
bandwidth is inexpensive and plenty. Like in our case in Finland and
Sweden. It does not take that much our of your pocket to pay the cell
tax if the amount you start from is not large. (remember this when you
fill in your tax forms, the "best way" to save in taxes is to earn
less :-)

 > As the service deleiverd at the endpoint is IP, we need to
 > interconnect the various parts of IP moving clouds, so we will have to
 > have IP-switches (called routers) that go damn fast anyway.
 >
Definetly we do. The problem here is that we're a generation away from
routers that would go STM4. And maybe generation and half away from
routers that would maintain fairness and maybe even QoS across them at
the same time they go STM4 on a dozen interfaces.

 > So, explain what's the problem here, I just demostrated that you can
 > run production IP traffic at 155Mbit without making a detour through
 > an ATM switch. 
 >
Where the current POS pipe is, is a perfect place for 'ATM-less'
circuit. When you say that you're going to do the next circuit
locally, that makes me wonder of the benefits. If you would run the
STM4 halfway across the globe, I would understand the benefits of
being free of cell tax.

 > It has been more stable than any other international circiut we have,
 > and the 'new' technology works great.
 >
On which of the submarine cables it runs on, btw?

Pete