I guess... FR &
ATM use PVC's or SVC's, that are virtual paths (or circuits)... So- with
Ethernet only one can exist @ one place @ one time in any given space
(collision domain stuff), but ATM or FR (logically) can have
co-existing traffic traveling on virtual connections, never colliding
(more like say a VLAN than CSMA/CD). In real physical terms,
these PVC are almost like individual paths to a hub being mux-ed into one
line @ the other end of the device. They are really just flagged cells
(ATM) or Frames (FR), but you configure that virtual path as if nothing
will ever come in contact with each PCV. This is quite amazing when
you get into DS3's or OC3s interfaces (no 2500
series Cisco processor found here :-)
Did I come close to
answering your question ???
Phil
----- Original Message -----
From: "John Green" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, August 17, 2000 1:56 PM
Subject: simple question about FR/ATM (ethernet)
> computers(hosts)
> can access and send data according csma-cd protocol.
> fine...
>
> now what about FR and ATM. they are just serial links.
> right ?
> ie only two computers (hosts etc) can connect across.
> right ?
>
> if the above is fine then....
>
> .... across this line when one computer transmits the
> other
> listens and then sends... how does it work ?
>
> please email me a cc as well
> [EMAIL PROTECTED]
>
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