At 12:10 PM 12/3/00, Howard C. Berkowitz wrote:
>When we are talking about futures, the reality is that we truly don't
>know. To say that carrier-scale backbones will be ATM (probably not), POS,
>IP over raw DWDM, MPLS over raw DWDM, etc., is not yet a given.
Thanks for turning this into a logical, well-written discussion instead of
a harangue, Howard.
Probably not ATM for carrier-scale backbones? Is it because MPLS is looking
like a better model? I realize I'm asking you to look into your crystal
ball, and that's always hard, but I'm interested in the technical reasons
off the cuff. (I know it could require a whole book to give a true answer!
&;-)
Priscilla
>We face challenges such as "is it better to have single 40 Gbps OC-768
>streams or multiple OC-192 over DWDM?" There are many routing versus
>switching arguments, and MPLS is a mixture of the two (even though there's
>intense religion about LDP, RSVP-TE, and CR-LDP). We don't know the
>situations in which photonic switching of lambdas is enough, versus
>photonic routing of individual packets. Lots of things we don't know.
>
________________________
Priscilla Oppenheimer
http://www.priscilla.com
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