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To: sbaker23 who wrote (25988)	6/7/2000 4:19:00 PM
From: mauser96	Read Replies (2) \| Respond to of 54805

10 gigabit Ethernet was discussed as a disruptive technology as applied to NTAP on the Network Appliances thread back in December 1999. Super fast Ethernet may to a large extent obviate the need for Fibre Channel in storage, thus making NTAP a prime beneficiary of this discontinuity.

To: sbaker23 who wrote (25988)	6/7/2000 8:54:00 PM
From: Frank A. Coluccio	Respond to of 54805

sbaker23, Just as a note to those entering this part of the discussion, we're talking about residential distribution networks, a la cable TV networks and ILEC fiber to the whatevers, although many of the principles cited are universally applicable. re: " pardon me for jumping in, but implicit in this issue is the increasingly apparent possibility that 10-gigabit Ethernet is a discontinuous technology, cheaper and better than ATM and SONET Indeed. In Canada there are trials taking place right now which are now based on this very notion, using 1 Gb/s. You can rest assured that 10GbE will follow. But there are many architectural issues that must be ironed out if optically supported digital baseband signals (as opposed to the MSO model which is predicated on analog RF over hybrid fiber caoxial systems) are to be used, and perhaps through dwdm there may be reason and room to use multiple protocols, each suited to specific services, simultaneously. For example, ATM for the delivery of voice and program video (abc, nbc), say, and 10GbE for all others. Even where ATM is used for voice, IP can be superimposed on top of it and handed off at the network layer upstream. I don't regard those as hard and fast solutions, by any means, but cite them for illustrative purposes, only. To be certain, these are the issues which are giving agita to the folks over in Cable Labs and the MSOs, as well as the CLECs and ILECs as each looks over their shoulder to see who is going to be the first to announce one of these variants over native fiber in a reference model, or trial. Bell South has taken a leap in this direction by putting in a sizable number of fiber to the home installations to date, and they've used the passive optical network (PON) model inherent in the Full Service Area Network (FSAN) template. Consequently, they chose to use ATM, as do several others, e.g., those who employ NXTV's twisted pair and coaxial VDSL options in their fiber to the curb architectures. But you are absolutely right in that there are several competing, and potentially [most-likely] disruptive approaches in the mix to satisfying the same end. How to get from here to there is one of the more interesting and perplexing challenges that we need to explore. ------------- On the topic of optically powering the loop, Dave Horne has just come up with some interesting findings: Message 13846863 FAC