Re: [Linux-ATM-General] Beginners question

[Brian S. J. <br...@tu...>]

On Fri, 22 Jun 2001, Gerben Meijer wrote:
> Could it be that they chose to use Frame Relay over ATM for ease of
> use/scalability? If we would scale up to 10mbit, would it still be the same
> setup (Frame Relay over ATM)? Or do you suspect that they aren't really
> using Frame Relay over ATM and that the guy I spoke with is simply not as
> technical as he thinks he is? :)

It sounds to me like when you scale past one E1 line, they will be using 
IMA (Inverse Multiplexing Over ATM).  This means, any device you use
will have to have an IMA adaptor with 2 or more e1 ports.  You'll 
probably have a hard time finding one of those as a PCI card.

> Perhaps you could briefly look at that adax card
> (http://www.adax.com/ATM_cPCI_PCI.html) and tell me if it suits my needs at
> all.

The docs on that website do not mention that the card can do IMA,
and I would assume it cannot, unless the manufacturer can assure you
otherwise.  There is a difference between IMA cards and straight ATM/E1
cards.

--
Brian